Laser lancing device

A laser lancing device, comprising:

• a main body;
• a laser resonator located within the main body and configured to generate a laser and output the laser forwards;
• a beam barrel located in front of the laser resonator and including at least one lens unit fixed therein;
• a window barrel located in front of the beam barrel and connected to the main body;
• a cap part connected to the front of the window barrel and brought into contact with an irradiation target area;
• a fan unit communicating with the cap part and induce flow of air;
• and
• a communication pipe of which one end is connected to the fan unit and the other end is connected to the cap part,
• wherein the cap part includes:
• a cap main body including an opening and a supporting surface to be supported on a contact point along the periphery of the opening;
• a through hole formed and extended from the back side of the opening of the cap main body, inserted into the window barrel, and having a predetermined space therein;
• a first communication hole formed to enable communication between the communication pipe and the inside of the through hole;
• and
• a second communication hole formed to enable communication between the inside and the outside of the through hole.