A BUTSUDAN is a wooden cabinet with double doors that enclose and protect a religious icon, typically a statue or painting of a Buddha or Bodhisattva, or a "script " mandala scroll. The door are opened to display the icon during religious observances, and closed before sunset.
Other auxiliary items often found near the BUTSUDAN called butsugu, such as candlesticks, flowers, hanging lamps, an incense burner, and bells. And placing offerings such as tea, water and food(usually fruits or rice).
Some Buddist sects place ihai, memorial tablets for deceased relatives, within or near the butsudan.
IHAI : a small (2" W x 5" H) rectangular black-painted wooden plate, supported in a footed box to standing. Usually it is made for each of our deceased ancestors (parents or grandparents)and families. And his or her posthumous name is inscribed on it in golden color letters.