Plant cultivation apparatus

A plant cultivation device, comprising:

• a cabinet that forms a space in which plants are cultivated:
• a door connected to the cabinet and configured to open and close the space;
• at least one bed disposed in the space;
• at least one light assembly that irradiates light onto the at least one bed;
• a tank configured to store a fluid;
• a tank rail coupled to both sides of the tank and both side surfaces of the cabinet so that the tank is drawn into and out of the space;
• and
• a fluid supply module configured to supply the fluid to the at least one bed, wherein a sterilizer is disposed in the space and apart from a rear of the tank, wherein the sterilizer comprises a light irradiation device that irradiates ultraviolet (UV) light, wherein the light irradiation device includes:
• at least one light source;
• a light guide that directs the UV light from the at least one light source toward the tank;
• a first case that is mounted within the plant cultivation apparatus and faces the tank, wherein a front opening is formed in the first case;
• and
• a second case coupled to the first case, wherein the at least one light source and the light guide are disposed between the first case and the second case and the light guide directs the UV light from the at least one light source through the front opening, wherein the tank has a transparent portion at a rear surface thereof corresponding to a position of the front opening of the first case, and when the tank is drawn into the space, the UV light passes through the transparent portion into the tank to sterilize the fluid within the tank, and wherein the tank is drawn into and out of the space in a direction in which the transparent portion and the light irradiation device face each other.