Leak prevention apparatus for operator cabin of construction equipment

A leakage prevention apparatus for a cabin of construction equipment, comprising:

• a first plate configured to be coupled to a frame of a cabin of a piece of construction equipment;
• a second plate configured to extend from the first plate such as to face a lower windshield of the cabin;
• a damper configured to press the lower windshield, the damper displaceably coupled to the second plate to adjust an amount of force pressing the lower windshield;
• block walls provided at distances from both sidewalls of the frame to face the both sidewalls, respectively, the both sidewalls guiding side portions of the lower windshield;
• and
• a weather strip arranged along peripheral portions of the lower windshield in contact with the lower windshield and connected to the block walls, thereby forming flow paths in a vertical direction between the block walls and the both sidewalls of the frame.