For interior, the most popular was the andon, a prism-shaped lantern like this one, photographed at an exposition inside a traditional house n Shiroishi.
EXIF info:
Nikon Df
Lens: VR 28-300mm F/3.5-5.6G
Focal Length: 28mm
Aperture: F/4
Shutter Speed: 1/60s
ISO Sensitivity: ISO 8000