Exhaust port member

An exhaust port member applied to a combustion device installed outdoors, the exhaust port member comprising:

• an inlet port into which combustion exhaust gas generated in the combustion device flows;
• an exhaust port which is located outside an outer casing of the combustion device and through which the combustion exhaust gas is discharged to an outside;
• an exhaust passage in which the combustion exhaust gas flows from the inlet port toward the exhaust port;
• and
• a space part which is located adjacent to a downstream end exhaust passage part positioned at a downstream end of the exhaust passage via a partition wall defining the downstream end exhaust passage part, wherein
• the space part has an upstream opening on an upstream side thereof,
• the combustion exhaust gas flowing in the exhaust passage flows into the space part through the upstream opening, and
• the space part is closed except for the upstream opening.