Patent ID: 7272422
Filing Date: 2007-09-18
Classification: H04M,H04R

Abstract:
1. A portable electronic device comprising a first case housing a speaker therein, and a second case connected to the first case by a joint mechanism and openable or closable relative thereto, the first case having a front wall to be covered with the second case when the two cases are in a closed state or to be exposed when the two cases are in an opened state, the first case having a first sound radiating hole formed in the front wall and positioned as opposed to the speaker and a second sound radiating hole formed in a rear wall thereof and positioned as opposed to the speaker, the joint mechanism having a shutter attached thereto for opening or closing the second sound radiating hole with the closing or opening movement of the second case, the shutter being operable to open the second sound radiating hole when the two cases are in the closed state and to close the second sound radiating hole when the two cases are in the opened state.