| US 7,391,878 B2 | ||
| Earphone device having composite functions | ||
| Sheng-Hsin Liao, No. 10, Alley 38, Lane 229, San Chun St., Shulin City, Taipei Hsien (Taiwan) | ||
| Filed on Jan. 12, 2005, as Appl. No. 11/33,134. | ||
| Prior Publication US 2006/0153414 A1, Jul. 13, 2006 | ||
| Int. Cl. H04R 25/00 (2006.01) | ||
| U.S. Cl. 381—370 [381/371; 381/373] | 20 Claims |
| 1. An earphone device having composite functions at least comprising:
an earphone shell body having an outer side portion and an inner side portion, wherein multiple outer sound holes are formed
in said outer side portion;
a loudspeaker having a front end face and being fixed in said earphone shell body with said front end face being directed
toward said outer side portion; and
an adjustment component disposed on said earphone shell body and having multiple adjustment holes formed therethrough corresponding
to said outer sound holes of said earphone shell body, wherein said adjustment component is displaceable to adjustably position
said adjustment holes between being in full open communication with said outer sound holes of said earphone shell body to
output sound through said adjustment holes and said outer sound holes and being in a closed position with respect to said
outer sound holes of said earphone shell body to reflect sound back into said earphone shell body.
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