Patent ID: 9075262
Filing Date: 2015-07-07
Classification: G02F,H05K

Abstract:
1. An outdoor display apparatus comprising: a housing having an opening formed at a front portion thereof, an inlet port through which air is introduced, and an outlet port through which air is discharged; a transparent member disposed in the opening; a liquid crystal display panel module disposed in the housing, spaced apart from the transparent member to define a gap therebetween, and provided with a liquid crystal display panel at a front side thereof to display an image; a circuit disposed at a rear portion of the liquid crystal display panel module; an optical film disposed inside the transparent member at a position corresponding to the liquid crystal display panel of the liquid crystal display panel module; and an air circulation device to distribute air introduced through the inlet port, the air circulation device comprising: wherein the optical film comprises a polarizing film having an optical axis the same as an optical axis of light passing through the liquid crystal display panel, and a ¼ wavelength plate to convert an optical axis of an image displayed on the liquid crystal display panel into circular polarized light, and wherein the air circulation device further comprises a drive motor to rotate the fan, and a guide duct, in which the fan is disposed, and the guide duct includes a first discharge port to guide the first portion of air discharged from the fan to the gap between the transparent member and the liquid crystal display panel, and a second discharge port to guide the second portion of the air discharged from the fan to the circuit.