Refrigerator

1. A refrigerator comprising:

a cabinet defining a storage space; and

a door including a door body configured to open and close the storage space and a panel assembly coupled to the door body,

wherein the panel assembly includes:

a panel defining a front surface of the door and configured to transmit light therethrough,

a back cover defining a rear surface of the panel assembly and made of a metal material,

a lighting device configured to emit light to the panel, and

a light supporter made of an electrical insulation material and configured to accommodate the lighting device, and

wherein the back cover is configured to dissipate heat generated by the lighting device to a rear of the panel assembly.

2. The refrigerator of claim 1 , wherein the light supporter is made of a plastic material having thermal conductivity.

3. The refrigerator of claim 2 , wherein the light supporter is made of any one of

a material in which a thermally conductive filler and a glass fiber (GF) are added to polyamide 6 (PA6),

a material in which a mineral fiber (MF) is added to polyphenylene sulfide (PPS),

a material in which carbon nanotubes (CNT) are added to polycarbonate (PC), and

a material in which a mineral fiber (MF) and a glass fiber (GF) are added to polyamide 6 (PA6) or polyamide 66 (PA66).

4. The refrigerator of claim 2 , further comprising:

a heat dissipation member in contact with the light supporter and the back cover, made of a thermally conductive material and configured to transfer the heat generated during the operation of the lighting device to the back cover.

5. The refrigerator of claim 4 , wherein the light supporter is disposed between the lighting device and the heat dissipation member and separates the lighting device and the heat dissipation member from each other.

6. The refrigerator of claim 1 , wherein the panel assembly further includes a bracket defining a top surface or a bottom surface of the panel assembly, and

wherein the lighting device is provided at the bracket.

7. The refrigerator of claim 6 , further comprising:

a bracket opening defined at a rear surface of the bracket and configured to pass the lighting device and light supporter, wherein

the bracket opening is shielded by a heat dissipation member.

8. The refrigerator of claim 7 , wherein the lighting device includes a plurality of light emitting diodes (LEDs) that are continuously disposed along a substrate, and

wherein the light supporter includes:

a seating portion configured to accommodate the substrate, and

a contact portion extending from the seating portion and exposed through the bracket opening.

9. The refrigerator of claim 8 , wherein the substrate is in contact with the seating portion by an adhesive member, and the adhesive member includes a thermally conductive material.

10. The refrigerator of claim 8 , wherein the seating portion is recessed and defines an accommodating groove configured to accommodate the substrate.

11. The refrigerator of claim 8 , wherein the contact portion extends parallel to the back cover and is in surface contact with the heat dissipation member.

12. The refrigerator of claim 8 , wherein the heat dissipation member includes:

a first part disposed between the seating portion and an inner surface of the bracket, the first part in contact with the seating portion; and

a second part extending from the first part and configured to cover the bracket opening,

wherein a front surface of the second part is in contact with the contact portion and a rear surface of the second part is in contact with the back cover.

13. The refrigerator of claim 12 , wherein the first part is configured to be inserted through a decoration opening and extend between the seating portion and the bracket.

14. The refrigerator of claim 12 , wherein the panel assembly further includes a light guide plate disposed behind the panel and configured to guide light emitted from the lighting device to the panel,

wherein the back cover includes:

a cover protrusion protruding forward and configured to support the light guide plate, and

a cover perimeter disposed along a perimeter of the cover protrusion and including a stepped portion protruding forward, and

wherein the second part extends toward the cover perimeter.

15. The refrigerator of claim 12 , wherein a handle is recessed at a side of the door and the second part extends beyond a recessed end of the handle.

16. The refrigerator of claim 12 , wherein a heat dissipation sheet made of a thermally conductive material is disposed between the contact portion and the back cover, and

wherein the heat dissipation sheet further extends upward from a lower end of the back cover and past an upper end of the contact portion.

17. The refrigerator of claim 16 , wherein the heat dissipation sheet includes:

a first heat dissipation sheet in contact with a front surface of the back cover and the contact portion; and

a second heat dissipation sheet in contact with a rear surface of the back cover and exposed to a space between a front surface of the door body and the back cover.

18. The refrigerator of claim 2 , wherein the light supporter is in contact with the back cover.

19. The refrigerator of claim 1 , wherein a heat dissipation space is defined between the back cover and a front surface of the door body.

20. The refrigerator of claim 1 , wherein the door body includes:

a body plate defining a front surface of the door body and disposed to face the back cover and be spaced apart from the back cover;

a door liner defining a rear surface of the door;

an upper cap decoration defining an upper surface of the door body;

a lower cap decoration defining a bottom surface of the door body; and

an insulator made of a foaming liquid injected into a space defined by coupling the body plate, the door liner, the upper cap decoration, and the lower cap decoration.