A lighting device comprising: at least one first light source mounted on a first substrate and emitting a visible light; at least one second light source disposed to be spaced apart from the first light source and emitting a light having a sterilization wavelength; and a housing at which the first light source and the second light source are disposed, wherein the first light source is disposed outside an area having an angle corresponding to about 50% of a maximum amount of the light emitted from the second light source based on a line substantially perpendicular to a center of the second light source; wherein the housing comprises: a bottom portion on which the first light source is disposed; and a sidewall portion (13, 15)connected to the bottom portion; the lighting device further comprising a cover unit that is coupled to the sidewall portion to face the bottom portion and covers the first light source;wherein the cover unit is provided with an opening defined in an area in which the second light source is provided, and the second light source is exposed to an outside through the opening, characterised in that the first light source and the second light source are disposed at different heights from the bottom portion, and the height of the first light source from the first substrate is lower than the height of the second light source from the first substrate. at least one first light source mounted on a first substrate and emitting a visible light; at least one second light source disposed to be spaced apart from the first light source and emitting a light having a sterilization wavelength; and a housing at which the first light source and the second light source are disposed, wherein the first light source is disposed outside an area having an angle corresponding to about 50% of a maximum amount of the light emitted from the second light source based on a line substantially perpendicular to a center of the second light source; wherein the housing comprises: a bottom portion on which the first light source is disposed; and a sidewall portion (13, 15)connected to the bottom portion; the lighting device further comprising a cover unit that is coupled to the sidewall portion to face the bottom portion and covers the first light source;wherein the cover unit is provided with an opening defined in an area in which the second light source is provided, and the second light source is exposed to an outside through the opening, characterised in that the first light source and the second light source are disposed at different heights from the bottom portion, and the height of the first light source from the first substrate is lower than the height of the second light source from the first substrate. at least one second light source disposed to be spaced apart from the first light source and emitting a light having a sterilization wavelength; and a housing at which the first light source and the second light source are disposed, wherein the first light source is disposed outside an area having an angle corresponding to about 50% of a maximum amount of the light emitted from the second light source based on a line substantially perpendicular to a center of the second light source; wherein the housing comprises: a bottom portion on which the first light source is disposed; and a sidewall portion (13, 15)connected to the bottom portion; the lighting device further comprising a cover unit that is coupled to the sidewall portion to face the bottom portion and covers the first light source;wherein the cover unit is provided with an opening defined in an area in which the second light source is provided, and the second light source is exposed to an outside through the opening, characterised in that the first light source and the second light source are disposed at different heights from the bottom portion, and the height of the first light source from the first substrate is lower than the height of the second light source from the first substrate. a bottom portion on which the first light source is disposed; and a sidewall portion (13, 15)connected to the bottom portion; the lighting device further comprising a cover unit that is coupled to the sidewall portion to face the bottom portion and covers the first light source;wherein the cover unit is provided with an opening defined in an area in which the second light source is provided, and the second light source is exposed to an outside through the opening, characterised in that the first light source and the second light source are disposed at different heights from the bottom portion, and the height of the first light source from the first substrate is lower than the height of the second light source from the first substrate.