DISPLAY APPARATUS

Abstract

A display apparatus, comprises a filter unit 33 attached on an air inlet opening 28a, having such a filter 36 that a suction negative load generating at the air inlet opening 28a formed in an upper cabinet 3 comes to be smaller than the suction load generating at gaps 29a and 30a defined in the upper cabinet 3, when driving a cooling unit 18, for sucking an air from the upper cabinet 3 and discharging the air used for cooling into the upper cabinet 3, when cooling down optical parts, such as, display devices 15R, etc., and a polarizing plate 16R, etc., of an optic unit 9.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Those and other objects, features and advantages of the present invention will become more readily apparent from the following detailed description when taken in conjunction with the accompanying drawings wherein:

FIG. 1 is a perspective view for showing the structures of a display apparatus, according to an embodiment of the present invention;

FIG. 2 is a cross-section view of the display apparatus, according to the present embodiment;

FIG. 3 is an upper view for showing a display device portion of an optical unit within the display apparatus, according to the present embodiment;

FIG. 4 is a side view for showing the optical unit within the display apparatus, according to the present embodiment;

FIG. 5 is a perspective view for showing the condition of the optical unit within the display apparatus, according to the present embodiment, in particular, when removing a suction air duct cover thereof;

FIGS. 6(A) and 6(B) are partial cross-section views for showing the conditions of attaching a screen on a frame of the display device, according to the present embodiment;

FIG. 7 is a view for showing the condition of mounting a filter unit at an air inlet of an upper cabinet;

FIG. 8 is a view for showing the condition of mounting a filter at a suction opening of a suction duct of a cooling unit within the display apparatus, according to the present embodiment; and

FIG. 9 is a view for diagramming a flow of cooling air with the display apparatus, according to the present embodiment.

Claims

1. A display apparatus, comprising: an upper cabinet, to which a screen is attached;an optic unit having optical parts for forming an image to be projected onto said screen; anda lower cabinet including a cooling unit for circulating an air within said upper cabinet through said optical parts, whereinan opening is formed in said upper cabinet, and a first filter is provided at said opening.

2. The display apparatus, as described in the claim 1, wherein said opening is provided in an upper portion of said upper cabinet.

3. The display apparatus, as described in the claim 1, wherein said first filter is detachable.

4. The display apparatus, as described in the claim 1, wherein said cooling unit comprises a suction duct and a fan, and also a suction opening of said suction duct is located at a position within said upper cabinet, and it is attached with a second filter.

5. The display apparatus, as described in the claim 1, wherein a gap is generated in said upper cabinet, and further said first filter generates suction negative pressure at said opening, being smaller than suction negative pressure, which is generated at said gap when said cooling unit sucks the air.

6. The display apparatus, as described in the claim 1, wherein said optic unit includes a display device and a polarizing plate, which is disposed on a display surface of said display device.

7. A display apparatus, comprising: an upper cabinet, to which a screen is attached;an optic unit having optical parts for forming an image to be projected onto said screen; anda lower cabinet including a cooling unit for cooling down said optic unit by sucking and blowing an air from an inside of said upper cabinet, and for discharging the air after cooling into the inside of said upper cabinet, whereinan opening is formed in said upper cabinet, and a first filter is provided at said opening.

8. The display apparatus, as described in the claim 7, wherein a gap is generated in said upper cabinet, and further said first filter generates suction negative pressure at said opening, being smaller than suction negative pressure, which is generated at said gap when said cooling unit sucks the air.

9. The display apparatus, as described in the claim 7, wherein said optic unit includes a display device and a polarizing plate, which is disposed on a display surface of said display device.