Patent ID: 8480176
Filing Date: 2013-07-09
Classification: A61G,H04R

Abstract:
1. A headrest for a dental treatment chair which supports a head of a patient during treatment comprising: a back head supporting member for supporting a back of the head of the patient; and ear supporting members which can be bent in directions to cover ears of the patient at both ends of the back head supporting member, wherein the ear supporting members or the back head supporting member has sound output sections each for outputting a sound from a sound source, a sound collecting section for collecting sounds in a surrounding environment is attached to the ear supporting members so as to be extendable from the ear supporting members, and the ear supporting members form hollow shapes for covering the ears of the patient, and have therein air layers in which air is sealed, wherein the sound output sections have acoustic filters for cutting off frequencies higher than 8 kHz.