Patent ID: 7876916
Filing Date: 2011-01-25
Classification: G09F,H04R

Abstract:
1. A card-type sound apparatus comprising: a sound signal input portion to which a sound signal is input from outside and a sound generation portion that generates sound according to the sound signal input to the sound signal input portion, the sound signal input portion and the sound generation portion being provided on a card-shaped substrate, wherein the sound generation portion comprises a vibrator portion and an exciter portion that makes the vibrator portion vibrate according to the sound signal input to the sound signal input portion, wherein the exciter portion comprises an expandable plate that expands and contracts according to an electric signal fed thereto and a vibration transmission plate that holds the expandable plate, and wherein the vibration transmission plate is supported partially by making direct contact with the vibrator portion and partially by lying on a soft material, so soft as not to hamper vibration, that fills a gap between the vibration transmission plate and the vibrator portion.