Patent ID: 9329464
Filing Date: 2016-05-03
CPC Classification: G03B,H04N

Claim Text:
1. An image projection apparatus, comprising: a light source to emit light; an optical unit including a curved mirror and a plurality of lenses to project an image generated by an image generator onto a screen by using the light emitted from the light source; an intake port to take low-temperature air into the image projection apparatus; an exhaust port to exhaust air from the image projection apparatus; a first ventilation unit to generate air flow from the intake port to the exhaust port; a first flow path for hot-air exhaust having increased its temperature by taking heat from the light source while flowing around the light source; a second flow path for a part of the low-temperature air, taken from the intake port, having a temperature lower than the hot-air exhaust; and a mixing unit to mix the hot-air exhaust from the first flow path and the low-temperature air from the second flow path, wherein the air mixed and exhausted from the mixing unit converges at a space between the mixing unit and the exhaust port with another part of the low-temperature air taken from the intake port, flowing from a third flow path outside the mixing unit; and a second ventilation unit to generate air flow into the second flow path, wherein the second ventilation unit intakes air having passed through a space between the curved mirror and a portion of an outer cover of the image projection apparatus, the portion of the outer cover facing a rear face of the curved mirror.