Cooling structure used for headgear and like

A cooling structure of a headgear or a hood, comprising:

• a main body portion configured to cover a top portion of a head of a person;
• and
• a flap portion configured to cover from a back of the head to an upper back of a neck of the person, wherein
• the main body portion is provided with a water inlet,
• the main body portion and the flap portion are provided with an absorbent material having a sheet shape for absorbing and retaining water poured from the water inlet and a moisture-permeable waterproof fabric overlapped with the absorbent material to cover a part of one side or both sides of the absorbent material,
• a head circumference size adjustment portion of the headgear or the hood is provided on the main body portion to adjust a circumference size of the headgear or the hood to fit the head of the person,
• a water channel is provided by a gap between the absorbent material and the moisture-permeable waterproof fabric to allow the water poured from the water inlet to flow and spread in a sheet-like manner in the main body portion and the flap portion, and
• the water channel of the main body portion, which is located above the head circumference size adjustment portion, and the water channel of the flap portion, which is located below the head circumference size adjustment portion, are connected with each other on both left and right sides of the head circumference size adjustment portion of the headgear or the hood avoiding the head circumference size adjustment portion so that the water flows from the main body portion to the flap portion for cooling from top portion of the head to the upper back of the neck integrally through an evaporative cooling effect of the water absorbed and retained by the absorbent material.