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Adaptive Projection Television Screen Mounting Clamps

Inactive Publication Date: 2009-01-01
DUGGAN SCOTT JOSEPH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A problem that projection display televisions typically have is keeping the top edge of the screen straight and in the proper location.
This is an even more severe problem on projection display televisions that incorporate upangle optics because such televisions require a more accurate screen location with respect to the optics.
Many projection televisions have a problem mounting the screen because of large dimensional tolerances and variations.
A particular problem is the thickness tolerance of the screen.
Another problem is that the width and height of the screen may vary significantly as a function of temperature and humidity.
With the steep upangles involved in recent projection televisions, bulging of the screen can cause significant image distortions.
However, with the steep upangles associated with recent projection display raypaths, changes in the location or position of the screen surface results in significant distortions to the image geometry.

Method used

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  • Adaptive Projection Television Screen Mounting Clamps
  • Adaptive Projection Television Screen Mounting Clamps
  • Adaptive Projection Television Screen Mounting Clamps

Examples

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Embodiment Construction

[0012]The present invention, shown in FIGS. 1A-3C, provides an extruded metal hinge mechanism that keeps the top of the projection display television screen frame straight and allows the screen assembly to be removed from the front without the use of screws from the rear.

[0013]An exemplary projection display television is shown in FIGS. 3A-3C. The screen mounting bracket 50 has top and bottom aluminum extrusions, that are a continuous stiffener for the screen frame 12. Aluminum extrusions are inexpensive to fabricate and provide good dimensional stability and stiffness properties. Strip mounts 55A, 55B attached to the top and bottom screen mounting bracket 50 are used to hold a projection display screen 10 in place.

[0014]The screen mounting bracket 50A comprises: an anchoring portion 51 that attaches to the screen frame 12 and a “T” shape detail 56 to accept the strip mount 55. In an exemplary embodiment, the anchoring portion 51 conforms to projections and / or recesses in the screen...

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PUM

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Abstract

Strip mounts on the top and bottom screen mounting brackets for holding a projection display screen in place while accommodating screen tolerances are disclosed. The strip mounts have a C-shaped profile that holds the display screen in place. The screen mounting brackets are elongate, stiff members.

Description

FIELD OF THE INVENTION[0001]The invention relates generally to a projection display and, in particular, details for mounting a projection display screen.BACKGROUND OF THE INVENTION[0002]Projection display televisions have become widely used. The cabinets for these projection display televisions are typically made from plastic. A problem that projection display televisions typically have is keeping the top edge of the screen straight and in the proper location. Plastic cabinets provide nice aesthetics but have a tendency to bow along the top edge, aggravating the ability to keep the top edge of the screen straight and in location. This is an even more severe problem on projection display televisions that incorporate upangle optics because such televisions require a more accurate screen location with respect to the optics.[0003]Many projection televisions have a problem mounting the screen because of large dimensional tolerances and variations. A particular problem is the thickness to...

Claims

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Application Information

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IPC IPC(8): A47B81/06A47B96/06
CPCG03B21/56
Inventor DUGGAN, SCOTT JOSEPHRITTER, DARIN BRADLEY
Owner DUGGAN SCOTT JOSEPH
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