| 摘要 |
PROBLEM TO BE SOLVED: To make the tuning of sounds easy and appropriate. SOLUTION: When a bass reflex duct 53 is attached to the front of a front door interior member 48 by set screws 60 in a state of projecting to the front side from the front of the front door interior member 48, and a front door exterior member 47 and the front door interior member 48 are assembled to each other, an outside window 49 and an inside window 52 form the window of the font door 4 by being coaxially connected back and forth, the front portion where the outlet 55 of the bass reflex duct 53 is provided projects forward from the front door exterior member 47 through a duct escape hole 50, the bass reflex duct 53 forms a sound transmission route by the vibration of air so as to emit sounds entering from a bass reflex duct inlet 54 to a bass reflect duct outlet 55, and the bass reflex duct 53 replaced to permit sounds to be easily and appropriately tuned. COPYRIGHT: (C)2008,JPO&INPIT
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