Power transmission apparatus for vehicle

A power transmission apparatus for a vehicle comprising:

• a torque converting device including:
• a first rotation element directly connected to one power source and selectively fixed to a transmission housing;
• a second rotation element directly connected to another power source;
• and
• a third rotation element;
• an input device including:
• a first input shaft directly connected to the third rotation element, selectively connected to the second rotation element, and provided with at least one input gear fixedly disposed on an exterior circumference thereof;
• and
• a second input shaft disposed without rotational interference with the first input shaft, selectively connected to the second rotation element, and provided with at least one input gear fixedly disposed on an exterior circumference thereof;
• a first speed output unit configured to convert torque input from the first input shaft or the second input shaft and output a converted torque;
• and
• a second speed output unit configured to convert torque input from the first input shaft or the second input shaft and output a converted torque.