A solar cell module comprising: a solar cell panel including an array of solar cells defining a plurality of outer strings (S1 and S4, S1 and S6) positioned closest to two outer edges of the solar cell panel and a plurality of inner strings (S2 and S3, S2 to S5) positioned between the outer strings (S1 and S4, S1 and S6), each of the plurality of strings (S1 to S4, S1 to S6) including a plurality of solar cells in electrical connection and arranged in a row; a plurality of interconnectors (220a to 220d, 220a to 220f) electrically connecting the plurality of solar cells of the strings (S1 to S4, S1 to S6); a junction box that is configured to receive electric current generated from the plurality of strings (S1 to S4, S1 to S6); a plurality of outer lead wires (OLW1 to OLW2) and inner lead wires (ILW1 to ILW2, ILW1 to ILW4) electrically coupling the junction box to an end portion of the interconnectors, each outer lead wire (OLW1, OLW2) including an interconnector connection part (OLW1-1, OLW2-1) connected to a corresponding interconnector (220a and 220d, 220a and 220f) of an outer string, a coupling part (OLW1-2, OLW2-2) connected to one end portion of the interconnector connection part (OLW1-1, OLW2-1), and a junction box connection part (OLW1-3, OLW2-3) connected to the other end portion of the coupling part (OLW1-2, OLW2-2), each inner lead wire ((ILW1 to ILW2), (ILW1 to ILW4)) including an interconnector connection part (ILW1-1, ILW2-1) connected to a corresponding interconnector (220b to 220c, 220b to 220e) of an inner string and a junction box connection part (ILW1-2, ILW2-2) connected to one end portion of the interconnector connection part (ILW1-1, ILW2-1); and an insulating film for insulating the plurality of lead wires ((OLW1 to OLW2, ILW1 to ILW2), (OLW1 to OLW2, ILW1 to ILW4)) from the the plurality of solar cells, wherein the plurality of lead wires ((OLW1 to OLW2, ILW1 to ILW2), (OLW1 to OLW2, ILW1 to ILW4)) are arranged such that they do not overlap with each other, characterized in that the insulating film covers the entirety of the coupling parts (OLW1-2, OLW2-2) of the outer lead wires (OLW1, OLW2), a portion of the junction box connection parts (OLW1-3, OLW2-3) of the outer lead wires (OLW1, OLW2), and a portion of the junction box connection parts (ILW1-2, ILW2-2) of the inner lead wires ((ILW1 to ILW2), (ILW1 to ILW4)). a solar cell panel including an array of solar cells defining a plurality of outer strings (S1 and S4, S1 and S6) positioned closest to two outer edges of the solar cell panel and a plurality of inner strings (S2 and S3, S2 to S5) positioned between the outer strings (S1 and S4, S1 and S6), each of the plurality of strings (S1 to S4, S1 to S6) including a plurality of solar cells in electrical connection and arranged in a row; a plurality of interconnectors (220a to 220d, 220a to 220f) electrically connecting the plurality of solar cells of the strings (S1 to S4, S1 to S6); a junction box that is configured to receive electric current generated from the plurality of strings (S1 to S4, S1 to S6); a plurality of outer lead wires (OLW1 to OLW2) and inner lead wires (ILW1 to ILW2, ILW1 to ILW4) electrically coupling the junction box to an end portion of the interconnectors, each outer lead wire (OLW1, OLW2) including an interconnector connection part (OLW1-1, OLW2-1) connected to a corresponding interconnector (220a and 220d, 220a and 220f) of an outer string, a coupling part (OLW1-2, OLW2-2) connected to one end portion of the interconnector connection part (OLW1-1, OLW2-1), and a junction box connection part (OLW1-3, OLW2-3) connected to the other end portion of the coupling part (OLW1-2, OLW2-2), each inner lead wire ((ILW1 to ILW2), (ILW1 to ILW4)) including an interconnector connection part (ILW1-1, ILW2-1) connected to a corresponding interconnector (220b to 220c, 220b to 220e) of an inner string and a junction box connection part (ILW1-2, ILW2-2) connected to one end portion of the interconnector connection part (ILW1-1, ILW2-1); and an insulating film for insulating the plurality of lead wires ((OLW1 to OLW2, ILW1 to ILW2), (OLW1 to OLW2, ILW1 to ILW4)) from the the plurality of solar cells, wherein the plurality of lead wires ((OLW1 to OLW2, ILW1 to ILW2), (OLW1 to OLW2, ILW1 to ILW4)) are arranged such that they do not overlap with each other, characterized in that the insulating film covers the entirety of the coupling parts (OLW1-2, OLW2-2) of the outer lead wires (OLW1, OLW2), a portion of the junction box connection parts (OLW1-3, OLW2-3) of the outer lead wires (OLW1, OLW2), and a portion of the junction box connection parts (ILW1-2, ILW2-2) of the inner lead wires ((ILW1 to ILW2), (ILW1 to ILW4)).