USB microphone for wireless transmission
The invention provides a USB microphone for wireless transmission, which relates to the specific application in the field of U-band wireless transmission. It is a USB microphone for wireless transmission, comprising a holder and a base shell. The top of the holder is attached to the fixing frame by screws. Within the fixing frame there is a mute button attached by screws, a microphone core and lithium batteries. The first PCBA board is screwed inside the fixing frame. The second PCAB board is screwed inside the base shell, and it is provided with an output for USB at one end. A face shell is set on top of the base shell. By combining UHF wireless transmission with a USB microphone, the invention frees the USB microphone from the length of the USB cable and enables USB transmission of digital signals for recording while being used wirelessly.
1. A universal serial bus (USB) microphone for wireless transmission, comprising: a holder ( 10 ) and a base shell ( 17 ), wherein
a top of the holder ( 10 ) is connected to a fixing frame ( 2 ) by screws; a front wind screen ( 1 ) is provided on a side of the fixing frame ( 2 ), and a rear screen ( 7 ) is provided on another side of the fixing frame ( 2 ); the front wind screen ( 1 ) and the rear screen ( 7 ) are fitted to the fixing frame ( 2 ); the fixing frame ( 2 ) is internally connected to a mute button ( 3 ) by other screws; a microphone core ( 4 ) and lithium batteries ( 5 ) are provided inside the fixing frame ( 2 ); a first printed circuit board assembly (PCBA) board ( 6 ) is internally connected to the fixing frame ( 2 ) by still other screws; a charging port ( 8 ) is provided on a side of a bottom of the fixing frame ( 2 ), and a headphone jack ( 9 ) is provided on another side of the bottom of the fixing frame ( 2 ); a bottom end of the holder ( 10 ) is connected to a rotating ball ( 11 ) through thread; and a bottom end of the rotating ball ( 11 ) is rotatably connected to a base ( 12 ); and
a second PCAB board ( 14 ) is provided inside the base shell ( 17 ); a headphone output port ( 15 ) is provided at an end of the base shell ( 17 ), and a USB port ( 16 ) is provided at another end of the base shell ( 17 ); a face shell ( 13 ) is provided on top of the base shell ( 17 ), and the face shell ( 13 ) and the base shell fit to each other; and a protection cap ( 18 ) is provided on a right side of the USB port ( 16 ).
2. The USB microphone for wireless transmission according to claim 1 , wherein the mute button ( 3 ) includes a power supply indication button and a PCBA board.
3. The USB microphone for wireless transmission according to claim 1 , wherein the first PCBA board ( 6 ) includes an ultra high frequency (UHF) wireless transmitter chip and a power switch.
4. The USB microphone for wireless transmission according to claim 1 , wherein the second PCBA board ( 14 ) includes an UHF wireless receiver chip and a USB audio converter chip.
5. The USB microphone for wireless transmission according to claim 1 , wherein the mute button ( 3 ) and the microphone core ( 4 ) are electrically connected to the first PCBA board ( 6 ), and the first PCBA board ( 6 ) is electrically connected to the lithium batteries ( 5 ).
6. The USB microphone for wireless transmission according to claim 1 , wherein the first PCBA board ( 6 ) is capable of performing wireless transmission at 2.4 GHz and in a very-high frequency (VHF) band.
7. The USB microphone for wireless transmission according to claim 1 , wherein an end of a lanyard ( 19 ) is wound on one side of the protection cap ( 18 ), and another end of the lanyard ( 19 ) is attached to one side of the face shell ( 13 ) by means of a ring.