Polymerization apparatus

A polymerization apparatus, comprising:

• a light irradiator;
• and
• a polymerization vessel, the polymerization apparatus being for polymerizing an unpolymerized portion formed of a photopolymerization curable composition by applying light emitted from the light irradiator to “an object that includes a member or an article having the unpolymerized portion” housed inside the polymerization vessel,
• wherein the light irradiator includes
• a first casing that includes a light source chamber defined by cylindrical side walls, a ceiling, and a floor including a light-transmissive window member, an intake hole and an exhaust hole being provided on the side walls,
• a light source assembly that includes a base having a light-emitting surface on which a plurality of light-emitting diodes is disposed in a predetermined pattern and a heat-dissipating surface to which a heat sink is joined, the heat sink further including a plurality of heat-dissipating fins disposed in parallel at predetermined intervals to form a groove-like air passage between the heat-dissipating fins adjacent to each other, the light source assembly being disposed within the light source chamber so that the light-emitting surface faces the light-transmissive window member,
• an intake fan disposed within the light source chamber so as to face the intake hole and one end of the air passage, and
• an exhaust fan disposed within the light source chamber so as to face the exhaust hole and the other end of the air passage,
• the polymerization vessel includes
• a polymerization cup that has a frustoconical or substantially frustoconical shape that opens upward and increases in diameter upward, and is capable of housing an object therein, and
• a second casing that is a bottomed cylindrical or box-shaped casing having an opening at an apex thereof, the polymerization cup being attachably/detachably housed in the second casing via the opening, and
• light that has been emitted by the plurality of light-emitting diodes of the light irradiator and has passed through the light-transmissive window member is applied to the inside of the polymerization cup of the polymerization vessel.