votive tablet
A wooden plaque or framed picture offered to a shrine or temple, often bearing a prayer, dedication, or commemorative inscription.
神社の拝殿に古い奉納額が掛けてある。
An old votive tablet is hung in the worship hall of the shrine.
Compound of 奉納 (dedication, offering) and 額 (framed picture, plaque). The term refers to a framed votive object dedicated at a religious site.