Window breaking device for unmanned aerial vehicle fire fighting

The window breaking device comprises a firing device, a guide pipe and a window breaking bullet, the firing device comprises a shell, the interior of the shell is hollow, a firing composition is installed in the shell, the firing composition is connected with a lead and penetrates out of the rear end of the shell, internal threads are formed in the front end of the shell, a sealing film is arranged at an opening in the front end of the shell, and the window breaking bullet is arranged on the guide pipe. The tail end of the guide pipe is provided with external threads, the external threads are matched with the internal threads, the window breaking bomb is embedded into the guide pipe and can freely slide along the guide pipe, the device is small and exquisite and can be carried on a reconnaissance unmanned aerial vehicle or a fire-fighting jetting unmanned aerial vehicle, a single unmanned aerial vehicle does not need to be additionally started for window breaking, manpower and material resources are saved, an