Patent ID: 8807409

Claim:
A car holder adopted to be assembled with a mobile apparatus, the mobile apparatus having a loudspeaker located at a back portion of the mobile apparatus, and the loudspeaker having a sound-output surface, the car holder comprising: a fixing module, adopted to be assembled within a car; and a supporting base, connected to the fixing module and having a leaning surface and a recess indented at the leaning surface, wherein when the mobile apparatus is assembled to the supporting base, the back portion of the mobile apparatus is leaned against the leaning surface, a portion of the recess is covered by the back portion of the mobile apparatus, the sound-output surface of the loudspeaker communicates with the recess, and a sound wave outputted by the sound-output surface, after being reflected by the recess, is transmitted from the recess in a direction far away from the leaning surface; and wherein the recess has a narrow portion, a wide portion continued from the narrow portion and an inclined plane at an end of the wide portion away from the narrow portion, the sound wave outputted by the loudspeaker is firstly concentrated by the narrow portion, transmitted through the wide portion, and then transmitted via the wide portion in a direction far away from the leaning surface after being reflected by the inclined plane.