Cloud storage expansion apparatus of video recorder

A cloud storage expansion apparatus for a video recorder, wherein the cloud storage expansion apparatus is removably connected to a flash card slot (11) of a video recorder (10), the flash card slot (11) has a communication interface (111) communicating with the outside, and the cloud storage expansion apparatus comprises:

• a body (20), having a circuit board (21) and a power supply component (22), wherein the power supply component (22) is electrically connected to the circuit board (21) to supply power;
• a flash card circuit unit (30), arranged on the circuit board (21), wherein the flash card circuit unit (30) conforms to a data access specification of the flash card slot (11);
• a dummy card connector (31), electrically connected to the flash card circuit unit (30), wherein the dummy card connector (31) is removably connected to the flash card slot (11) so as to be electrically connected to the communication interface (111) for the video recorder (10) to store image file data (F) to the flash card circuit unit (30);
• a wireless communication module (40), arranged on the circuit board (21), wherein the wireless communication module (40) is used to be connected to a cloud space (C);
• a detection module (50), arranged on the circuit board (21) to detect whether there is an active signal in the communication interface (111);
• and
• a controller (60), arranged on the circuit board (21) and electrically connected to the flash card circuit unit (30), the wireless communication module (40) and the detection module (50), wherein when it is detected that there is no active signal in the communication interface (111), the controller (60) occupies a access right of the flash card circuit unit (30), the image file data (F) in the flash card circuit unit (30) is uploaded to the cloud space (C), and the access right is released after all the image file data (F) in the flash card circuit unit (30) is uploaded.