Patent ID: 6623125
Filing Date: 2003-09-23
Classification: G03B,H04N

Abstract:
A heat-dissipating device for being used in a liquid crystal display projector having liquid crystal displays and polarizers, comprising:a heat-dissipating channel disposed under said liquid crystal displays and said polarizers and comprising a main path, a first branch having a first entrance having a first width, a second branch having a second entrance having a second width, and a plurality of vents corresponding to and adjacent to said liquid crystal displays and said polarizers, respectively; a first regulation plate disposed at said first entrance for regulating said first width to limit relative spaces of said first branch, said second branch and said main path; a second regulation plate disposed at said second entrance for regulating said second width to limit relative spaces of said first branch, said second branch and main path; and a fan connected with an end of said heat-dissipating channel, wherein when an airflow is blown from said fan into said main path, said first branch and said second branch and discharged outwardly through said vents, heat generated from said liquid crystal displays and said polarizers is dissipated and temperatures around said liquid crystal displays are kept near isothermal, and wherein the space of said first branch and said second branch is determined by calculating quantities of two separated airflows of said air flow, which are sufficient to make said liquid crystal displays near isothermal.