A refrigerator including: a cabinet provided therein with a storage compartment configured with an access opening formed in the front surface of a storage compartment and formed by an upper wall, a lower wall, both sidewalls and a rear wall which are formed of an insulating material; at least one door closely contacting the front surface of the storage compartment to open and close the storage compartment; and at least one drawer provided in the storage compartment; at least one shelf provided in the storage compartment, the at least one shelf being positioned at an upper side of the drawer; a camera device which includes: a camera module part configured to receive a camera lens and electrical components needed to drive a camera and provided with a transparent window spaced a certain distance from the camera lens, a camera housing part (73, 74) configured to seat and fix the camera module part at a position in the camera housing part, and a heater arranged to heat the transparent window, characterised in that the refrigerator further includes a controller arranged to control a power supply to continuously supply power to the heater; wherein the camera device is fixed to a ceiling of the storage compartment between a front edge of the at least one shelf and the access opening, wherein the camera device is arranged to photograph both a region for storing of food provided in an external upper space of the drawer in the storage compartment and a region provided in an internal space of the drawer for storing of food, wherein the controller is arranged to control power to the heater such that: i. constant power is applied to the heater while the storage compartment is normally operated, ii. constant power is supplied to the heater without an on/off cycle, iii. constant power is supplied to the heater during operation of the refrigerator, iv. constant power is supplied to the heater during application of power to the refrigerator, and v. constant power is supplied to the heater even if the door is opened. a cabinet provided therein with a storage compartment configured with an access opening formed in the front surface of a storage compartment and formed by an upper wall, a lower wall, both sidewalls and a rear wall which are formed of an insulating material; at least one door closely contacting the front surface of the storage compartment to open and close the storage compartment; and at least one drawer provided in the storage compartment; at least one shelf provided in the storage compartment, the at least one shelf being positioned at an upper side of the drawer; a camera device which includes: a camera module part configured to receive a camera lens and electrical components needed to drive a camera and provided with a transparent window spaced a certain distance from the camera lens, a camera housing part (73, 74) configured to seat and fix the camera module part at a position in the camera housing part, and a heater arranged to heat the transparent window, a camera module part configured to receive a camera lens and electrical components needed to drive a camera and provided with a transparent window spaced a certain distance from the camera lens, a camera housing part (73, 74) configured to seat and fix the camera module part at a position in the camera housing part, and a heater arranged to heat the transparent window, characterised in that the refrigerator further includes a controller arranged to control a power supply to continuously supply power to the heater; wherein the camera device is fixed to a ceiling of the storage compartment between a front edge of the at least one shelf and the access opening, wherein the camera device is arranged to photograph both a region for storing of food provided in an external upper space of the drawer in the storage compartment and a region provided in an internal space of the drawer for storing of food, wherein the controller is arranged to control power to the heater such that: i. constant power is applied to the heater while the storage compartment is normally operated, ii. constant power is supplied to the heater without an on/off cycle, iii. constant power is supplied to the heater during operation of the refrigerator, iv. constant power is supplied to the heater during application of power to the refrigerator, and v. constant power is supplied to the heater even if the door is opened. i. constant power is applied to the heater while the storage compartment is normally operated, ii. constant power is supplied to the heater without an on/off cycle, iii. constant power is supplied to the heater during operation of the refrigerator, iv. constant power is supplied to the heater during application of power to the refrigerator, and v. constant power is supplied to the heater even if the door is opened.