Patent ID: 7841721
Filing Date: 2010-11-30
Classification: G03B

Abstract:
1. A projector, comprising: an optical component; a sealed structure including a plurality of sealed structures, each of the plurality of sealed structures mutually independently defining a loop air-circulation path in which air is circulated within which the optical component is disposed, the sealed structure including: an optical component casing that houses the optical component therein, the optical component casing having an inlet for the air to flow into the optical component casing and an outlet for the air to flow out of the optical component casing; a plurality of ducts that introduces the air into the optical component casing through the inlet and re-introduces the air flowing out of the optical component casing through the outlet into the optical component casing through the inlet; and a heat radiator having a heat-receiving member disposed inside the sealed structure to receive the heat of the air within the sealed structure, and a heat-conducting member that penetrates an inside and an outside of the sealed structure, the heat-conducting member having a first end disposed inside the sealed structure and a second end disposed outside the sealed structure, the first end coupled to the heat-receiving member in a heat-transferable manner to transfer the heat of the heat-receiving member to the second end, wherein the heat radiator has a heat-radiating member being coupled to the second end of the heat-conducting member to radiate the heat transferred via the heat-conducting member, and the heat radiator of each of the plurality of sealed structures having the heat-radiating member in common; and a circulation fan that circulates the air within the loop air-circulation path.