Igniter gun equipped with a safety mechanism

An igniter gun, comprising:

• a casing;
• a gun tube above the casing;
• a liquefied fuel container within the casing;
• a gas outlet assembly including a gas outlet valve and a gas outlet nozzle, one end of the gas outlet nozzle being accommodated in the gun tube, another end of the gas outlet nozzle being connected with the liquefied fuel container via the gas outlet valve;
• an igniting assembly including a piezoelectric member, a piezoelectric pusher, a trigger above the piezoelectric pusher, and a lever, the lever being provided between the piezoelectric pusher and the trigger, a first end of the lever being pivotally connected to the casing, a second end of the lever abutting against the trigger, and a middle part of the lever abutting against the piezoelectric pusher;
• a gas controller, one end of the gas controller being connected with the gas outlet valve, another end of the gas controller forming a hook, the hook being positionable to abut against the first end of the lever;
• a safety spring urging the hook to move beyond a movement range of the first end of the lever, the safety spring being set between one side of the gas controller and the casing;
• and
• a controller switch abutting against a back of the hook, the controller switch being set between the back of the hook and the casing, the controller switch being pivotally connected to the casing, at least a portion of the controller switch being exposed outside the casing;
• wherein, when the exposed portion of the controller switch is pushed, the controller switch moves the hook against the urging of the spring and to a position within the movement range of the first end of the lever, so that the first end of the lever will lift the hook when the trigger is pushed down, thereby opening the gas outlet valve.