Mobile terminal and noise prevention structure of mobile terminal
View Patent ↗A microphone ( 130 ) is fitted with a mounting portion ( 130 a ) of a front case ( 12 ) in a state being set to a microphone folder ( 134 ). A metallic mesh-wise sheet ( 132 ) is attached to a front face of the microphone. When an EL sheet ( 110 ) on a rear face of the front case emits light by supplying power to it, electrical noise is radiated from the EL sheet. The mesh-wise sheet of the front face of the microphone blocks the electrical noise from the EL sheet, which may enter through a sound hole ( 131 ) to the inside of the microphone.
1. A mobile terminal equipped with a microphone, comprising:
a housing component in which a sound hole for inputting a voice is formed;
a metallic sheet,
the microphone is located at a portion where the sound hole of the housing component is formed, and arranged on an opposite side of a surface of the housing component in correspondence to the sound hole,
the metallic sheet is arranged between the housing component and the microphone, and connected to a grounding portion of the mobile terminal by using a predetermined grounding method,
an electroluminescent (EL) sheet is arranged in an operation unit,
the metallic sheet is attached to a face of the microphone to which a voice is inputted in the microphone,
the microphone with the attached metallic sheet is mounted in the housing component,
the microphone includes a microphone body and a microphone housing in which the microphone body is disposed,
the microphone housing is made of metal,
the metallic sheet is connected to the grounding portion of the mobile terminal via the microphone housing,
the mobile terminal further comprises a connection portion for connecting the mobile terminal to an external device through a connecting terminal of the connection portion,
the connection portion includes a metallic conductor portion that surrounds the connecting terminal to shield the connection portion,
the connection portion is arranged on a rear face of the microphone which is an opposite side to a face to which a voice is inputted in the microphone, a part of an outer face of the metallic conductor portion being opposed to the rear face of the microphone to shield the rear face of the microphone, and
the metallic conductor portion is connected to the grounding portion of the mobile terminal by using a predetermined grounding method.
2. The mobile terminal according to claim 1 ,
wherein the metallic sheet is a sheet formed in a mesh-wise shape.
3. The mobile terminal according to claim 1 ,
wherein the microphone is arranged at the housing portion where an operation unit is arranged in the mobile terminal.
4. The mobile terminal according to claim 1 , wherein the mobile terminal is a mobile phone.