In various embodiments, a lighting device for a motor vehicle is provided. The lighting device includes at least one light source, and at least one layer of a lacquer embodied such that light may be coupled into the lacquer for achieving a luminous effect. Scattering particles are provided in the lacquer for output coupling of the light.

A vehicle lamp 1 is provided with: a ventilating unit 10 that is provided with a first opening 2a of a closed case 2, prevents entry of liquids and solids to an inside space S within the case 2, and allows circulation of air between the inside space S and an outside space of the vehicle lamp 1; and a dehumidifying unit 20 that is provided in a second opening 2b of the case 2 different in position from the first opening 2a and has an electrolysis dehumidifying element for discharging water vapor in the inside space S to the outside of the vehicle lamp 1 by electrolysis. Thus, a dehumidifying device and a lamp that can rapidly discharge water vapor that has entered the inside of a housing to the outside of the housing can be provided.

A vehicle body structure includes a ventilation port through which air in an internal space of a lamp body enters and exits, a cap that covers the ventilation port, a waterproof wall that surrounds a periphery of the cap, and a water-resistant cover that covers an opening section of the waterproof wall, wherein the water-resistant cover includes a drain port further outside than the waterproof wall in a radial direction when seen in an axial direction of the waterproof wall.

A vehicle body structure includes a ventilation port through which air in an internal space of a lamp body enters and exits, a cap that covers the ventilation port, a waterproof wall that surrounds a periphery of the cap, and a water-resistant cover that covers an opening section of the waterproof wall, wherein the water-resistant cover includes a drain port further outside than the waterproof wall in a radial direction when seen in an axial direction of the waterproof wall.