Mobile station with sound speaker

1. A mobile station comprising:

a casing having a sound hole formed in a front wall portion thereof;

an inner frame contained in said casing;

a sound duct integrally formed with said inner frame;

a wiring board contained in said casing and arranged in the vicinity of a bottom wall portion of said casing; and

a sound speaker mounted on a top surface of said wiring board such that a sound emitting face of said sound speaker is directed to the front wall portion of said casing,

wherein the sound emitting face of said sound speaker is connected to said sound hole through said sound duct so that a sound is guided from said sound speaker to said sound hole,

wherein said casing is defined as a lower casing, further comprising an upper casing hinged to said lower casing such that said upper casing is movable between an opened position and a closed position at which the upper casing is superimposed on the lower casing, said lower casing having at least one recess formed in a front wall portion thereof and opened at a side of said front wall portion of said lower casing, said sound hole being formed in said recess.

2. The mobile station as set forth in claim 1 , wherein said sound duct includes a first sound duct section protruded from a top surface of said inner frame, and a second sound duct section protruded from the top surface of said inner frame.

3. The mobile station as set forth in claim 2 , wherein an end face of said first sound duct section is abutted against and aligned with the sound emitting face of said sound speaker, and wherein an end face of said second sound duct section is abutted against an inner wall surface of the front wall portion of said casing so as to be aligned with said sound hole.

4. The mobile station as set forth in claim 2 , wherein said first sound duct section has a larger diameter than that of said second sound duct section.

5. The mobile station as set forth in claim 1 , wherein said sound duct ( 46 ) includes a first sound duct section protruded from a top surface of said inner frame, and a second sound duct section slantedly protruded from the top surface of said inner frame.

6. The mobile station as set forth in claim 5 , wherein an end face of said first sound duct section is abutted against and aligned with the sound emitting face of said sound speaker, and wherein an end face of said slantedly-protruded second sound duct section is directed to said sound hole.

7. The mobile station as set forth in claim 1 , wherein said sound hole, said sound duct, and said sound speaker are defined as a first sound hole, a first sound duct and a first sound speaker, respectively, further comprising:

a second sound duct integrally formed with said inner frame; and

a second sound speaker mounted on the top surface of said wiring board such that a sound emitting face of said second sound speaker is directed to the front wall portion of said casing, said casing having a second sound hole formed in the front wall portion of said casing, the sound emitting face of said second sound speaker is connected to said second sound hole through said second sound duct so that a sound is guided from said second sound speaker to said second sound hole.

8. The mobile station as set forth in claim 1 , wherein said casing ( 10 ) has an opening formed in the front wall portion thereof, further comprising:

a sound duct integrally formed with said inner frame; and

a talking speaker securely attached to a lower end face of said sound duct, an upper end of said sound duct being abutted against an inner wall face of the front wall portion of said casing so as to be aligned with said opening.

9. The mobile station as set forth in claim 1 , wherein said wiring board is defined as a first wiring board, further comprising a second wiring board mounted on said inner frame.

10. The mobile station as set forth in claim 9 , wherein said first wiring board is defined as a main wiring board, and wherein said second wiring board is defined as a key-wiring board associated with a flexible key sheet, which has a plurality of keys securely mounted thereon.

11. The mobile station as set forth in claim 10 , wherein said mobile station is constituted as a mobile phone terminal, each of said keys being defined as a dial key.

12. The mobile station as set forth in claim 9 , wherein said inner frame has at least two hooks for detachably mounting said second wiring board on said inner frame.

13. The mobile station as set forth in claim 9 , wherein said second wiring board has an opening formed therein, a part of said sound duct being extended through said opening.