Mobile X-ray imaging device

A mobile X-ray imaging device, on a moving trolley of which is equipped with an X-ray irradiation part having an X-ray tube for generating X-rays, an X-ray detector detecting the X-rays, a battery, and an electric power supply circuit for supplying electric power stored in the battery to a load,

• the mobile X-ray imaging device comprising:
• a startup switch that opens and closes a supply path of electric power from the battery by operation of an operator;
• a switchgear arranged in a main path of electric power supply from the battery to the load;
• a startup circuit that has an opening-closing relay of the switchgear and sets the mobile X-ray imaging device to a normal startup mode by receiving the supply of electric power from the battery and setting the switchgear to a closing state when the startup switch is in a closing state;
• a startup DC-DC converter converting a voltage of the electric power supplied from the battery to a voltage that activates the startup circuit;
• a control circuit that receives the supply of electric power from the battery when the switchgear is in the closing state and that includes a processor calculating an operation signal of the mobile X-ray imaging device;
• a control DC-DC converter converting the voltage of electric power supplied from the battery to a voltage that activates the control circuit;
• a mode transition relay that changes an energization state of the opening-closing relay in the startup circuit according to a command of the control circuit after a fixed time has elapsed since the startup switch is in the closing state, thereby the switchgear is set to the opening state and the mobile X-ray imaging device is set to a sleep mode;
• an operation switch that is connected to the control circuit and inputs an operation instruction to the mobile X-ray imaging device;
• and
• a startup circuit connection relay that detects input from the operation switch and operates by receiving the supply of electric power from the startup DC-DC converter through the startup circuit when the mobile X-ray imaging device is in the sleep mode;
• wherein
• in a case that the startup circuit connection relay detects input of the operation switch and operates when the mobile X-ray imaging device is in the sleep mode, the startup circuit changes the energization state of the opening-closing relay again to set the switchgear to the closing state and restores the mobile X-ray imaging device from the sleep mode to the normal startup mode.