Vehicular rear window assembly with integrated CHMSL, cargo light and in-cabin light

A method of assembling a vehicular rear window assembly, the method comprising:

• providing a window panel comprising an inner side and an outer side;
• providing a lighting device, wherein the lighting device comprises (i) a housing portion, (ii) a first light source arranged on a first circuit element and electrically operable to emit light, (iii) a second light source arranged on a second circuit element and electrically operable to emit light, (iv) a third light source arranged on the first circuit element and electrically operable to emit light and (v) a heat sink that is in thermally conductive connection with the first circuit element and the second circuit element;
• wherein the first circuit element is disposed at a first side of the heat sink, and wherein the second circuit element is disposed at a second side of the heat sink, and wherein the first side of the heat sink is opposite the second side of the heat sink, and wherein a thickness of the heat sink extends between the first side of the heat sink and the second side of the heat sink;
• wherein the second side of the heat sink is at an oblique angle relative to the first side of the heat sink;
• attaching the housing portion at an upper region of the inner side of the window panel;
• wherein, with the housing portion of the lighting device attached at the upper region of the inner side of the window panel, the vehicular rear window assembly is configured for mounting at a rear portion of an interior cabin of a vehicle;
• wherein, when the first light source is electrically operated to emit light, the first light source emits light that passes through the window panel;
• wherein, when the second light source is electrically operated to emit light, the second light source emits light that is directed away from the window panel;
• wherein, when the third light source is electrically operated to emit light, the third light source emits light that passes through the window panel at a downward angle relative to light emitted by the first light source;
• wherein the heat sink draws heat from the first circuit element (i) when the first light source is electrically operated to emit light and (ii) when the third light source is electrically operated to emit light;
• wherein the heat sink draws heat from the second circuit element when the second light source is electrically operated to emit light;
• and
• wherein, with the vehicular rear window assembly mounted at the vehicle, the inner side of the window panel faces toward the interior cabin of the vehicle and the outer side of the window panel faces exterior of the vehicle.

A vehicular rear window assembly, the vehicular rear window assembly comprising:

• a window panel comprising an inner side and an outer side;
• wherein the window panel is configured for mounting at a rear portion of an interior cabin of a vehicle to mount the vehicular rear window assembly at the vehicle, and wherein, with the vehicular rear window assembly mounted at the vehicle, the inner side of the window panel faces toward the interior cabin of the vehicle and the outer side of the window panel faces exterior of the vehicle;
• a lighting device attached at an upper region of the inner side of the window panel, wherein the lighting device comprises a housing portion;
• wherein the housing portion of the lighting device accommodates (i) a first light source arranged on a first circuit element and electrically operable to emit light, (ii) a second light source arranged on a second circuit element and electrically operable to emit light, (iii) a third light source arranged on the first circuit element and electrically operable to emit light and (iv) a heat sink that is in thermally conductive connection with the first circuit element and the second circuit element;
• wherein the first circuit element is disposed at a first side of the heat sink, and wherein the second circuit element is disposed at a second side of the heat sink, and wherein the first side of the heat sink is opposite the second side of the heat sink, and wherein a thickness of the heat sink extends between the first side of the heat sink and the second side of the heat sink;
• wherein the second side of the heat sink is at an oblique angle relative to the first side of the heat sink;
• wherein, with the vehicular rear window assembly mounted at the vehicle, and when the first light source is electrically operated to emit light, the first light source emits light that passes through the window panel and that is viewable by a person viewing the vehicular rear window assembly from exterior and rearward of the vehicle;
• wherein, with the vehicular rear window assembly mounted at the vehicle, and when the second light source is electrically operated to emit light, the second light source emits light that illuminates an interior portion of the interior cabin of the vehicle;
• wherein, with the vehicular rear window assembly mounted at the vehicle, and when the third light source is electrically operated to emit light, the third light source emits light that passes through the window panel to illuminate at least a portion of a bed of the vehicle;
• wherein the lighting device comprises a light guide that includes (i) a first portion disposed between the first light source and the inner side of the window panel and (ii) a second portion disposed between the third light source and the inner side of the window panel;
• wherein the first portion of the light guide directs light emitted by the first light source to pass through the window panel and the second portion of the light guide directs light emitted by the third light source to pass through the window panel;
• wherein the heat sink draws heat from the first circuit element when the first light source is electrically operated to emit light;
• and
• wherein the heat sink draws heat from the second circuit element when the second light source is electrically operated to emit light.