Projector

• US 5,676,441 A
• Filed: 08/05/1996
• Issued: 10/14/1997
• Est. Priority Date: 08/11/1995
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Takahashi, Hitoshi
• Primary Examiner(s): DOWLING, WILLIAM C
• Application Number:
  US08/692,517
• Time in Patent Office: 435 Days
• Field of Search: 353/94, 353/74, 359/460, 359/456, 359/453, 359/449
• US Class Current: 353/94
• CPC Class Codes: G03B 21/10 Projectors with built-in or built-on screen
• CPC Class Codes: G03B 21/56 Projection screens
• CPC Class Codes: G03B 37/04 with cameras or projectors providing touching or overlapping fields of view
• CPC Class Codes: H04N 9/3147 Multi-projection systems displays in general H04N9/12; video walls G06F3/1446, G09G2300/026

Abstract

A projector includes a plurality of cabinets arranged in rows and columns and each of the cabinets has a screen located at its front end with a plurality of the screens being adapted to collectively form a large display screen on which an image is formed. The cabinet further includes a screen a screen frame for holding edges of the screen, a screen holder, which is secured to the screen by the screen frame, a screen bracket for mounting the screen holder to the cabinet, a mechanism for securing the screen holder to the screen bracket and permitting disconnection of the screen holder from the screen bracket when the screen holder is pushed rearwardly toward the screen bracket, and a slide mechanism mounted on one side of the screen bracket and the screen holder and adapted to permit reciprocal movement of the screen holder relative to the cabinet when the screen holder is disconnected from the screen bracket.

Claims

1. A projector comprising:

a plurality of cabinets arranged in rows and columns each said cabinet having a screen located at a front end with a plurality of said screens being adapted to collectively form a display screen on which an image is formed, each said cabinet including a screen frame for holding edges of said screen, a screen holder secured to said screen by said screen frame, a screen bracket for mounting said screen holder to said cabinet, means for securing said screen holder and said screen bracket and permitting disconnection of said screen holder from said screen bracket when said screen holder is pushed rearwardly toward said screen bracket, and a slide mechanism mounted on said screen bracket and said screen holder for permitting reciprocal movement of said screen holder relative to said cabinet when said screen holder is disconnected from said screen bracket.

2. A projector according to claim 1, wherein said means for securing said screen holder to said screen bracket is a push-type joint.

3. A projector according to claim 1, wherein said means for securing said screen holder to said screen bracket is a magnetic joint.

4. A projector according to claim 1, wherein said slide mechanism is attached to sides of said screen bracket and said screen holder.

5. A projector according to claim 1, wherein said slide mechanism comprises a slider including a first fixed element mounted on said screen holder, a second fixed element mounted on said screen bracket, a core disposed between said first and second fixed elements through a plurality of bearings, and a plurality of stoppers located on said first fixed element, said second fixed element, and said core for limiting reciprocal movement of said screen holder.

6. A projector according to claim 1, wherein said slide mechanism comprises a slide shaft attached to one of said screen holder and said screen bracket and a stopper at a front end of said slide shaft, a bearing mounted on the other one of said screen holder and said screen bracket for holding said slide shaft, and rollers for facilitating sliding movement of said slide shaft, whereby said stopper limits reciprocal movement of said screen holder when brought into contact with said bearing.