Monitoring apparatus having a detachable display and a power failure protection

A monitoring apparatus having a detachable display device and a power failure protection, comprising:

• a camera module;
• a serpent tube, with an end coupled to the camera module;
• a main body, coupled to another end of the serpent tube, and including a first terminal socket, a first port and a plurality of first switches disposed on a top of the main body, and a battery and a first circuit disposed in the main body, wherein the first terminal socket has a plurality of main body connecting terminals, one of the main body connecting terminals is electrically coupled to the battery through the first circuit, the remaining main body connecting terminals pass through the serpent tube and are electrically coupled to the camera module through the first circuit, the first port passes through the serpent tube and is electrically coupled to the camera module through the first circuit for connecting to a first plug of a transmission line, and the first switches are coupled to a portion of main body connecting terminals respectively for disconnecting or connecting corresponding power supply currents of the main body connecting terminals respectively;
• and
• a display device, having a second terminal socket, a second port and a plurality of second switches, a control circuit board and a second circuit installed in the display device, wherein the second terminal socket has a plurality of display terminals electrically connectable to the control circuit board, the second port is electrically coupled to the control circuit board through the second circuit and provided for connecting to a second plug of the transmission line, and the second switches are respectively and electrically coupled to a portion of the display terminals for disconnecting or connecting the power supply current of the display terminal;
• thereby, when the display device is installed to the main body, the second terminal socket is inlaid with the first terminal socket, such that the corresponding main body connecting terminal and display terminal are electrically conducted and the first switch and the second switch are in a closed status respectively and, when the display device is detached from the main body, the first switch and the second switch are in an opened status respectively, the main body connecting terminal and display terminal cannot receive electric power from the battery, and when the second port of the display device is electrically coupled to the first port of the main body via the first plug and the second plug of the transmission line, the control circuit is electrically conducted with the battery and the camera module.