Projection type image display apparatus

• US 7,972,015 B2
• Filed: 05/28/2008
• Issued: 07/05/2011
• Est. Priority Date: 12/04/2007
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Jong-soo, Kim, Sang-ik, Lim, Jae-geun, Jeon, Kee-uk, Kim, Jung-hyeon
• Primary Examiner(s): Lee; John R
• Application Number:
  US12/128,147
• Publication Number:
  US 20090141246A1
• Time in Patent Office: 1,133 Days
• Field of Search: 353/37, 353/47, 353/50, 353/51, 353/52, 353/57, 353/58, 353/59, 353/60, 353/61, 353/74, 353/77, 353/78, 353/119, 353/30, 353/46
• US Class Current: 353/77
• CPC Class Codes: G03B 21/10 Projectors with built-in or built-on screen
• CPC Class Codes: G03B 21/16 Cooling; Preventing overheating
• CPC Class Codes: G03B 21/28 Reflectors in projection beam in illumination beam G03B21/2066
• CPC Class Codes: H04N 9/3141 Constructional details thereof details not peculiar to the presence of an electronic spatial light modulator G03B21/14

Abstract

A projection type image display apparatus includes: a cabinet; a screen which is provided in the cabinet; a display device which is placed inside the cabinet and forms an image; and an optical system which projects an image formed by the display device to the screen and comprises at least one mirror, a supporter for supporting the mirror, and a frame through which the supporter is fastened to the cabinet, all of the mirror, the supporter and the frame being disposed within a single interior space formed by the cabinet and the screen.

Claims

1. A projection type image display apparatus comprising:

a cabinet;

a screen which is disposed in the cabinet;

a display device which is disposed inside the cabinet and forms an image; and

an optical system which projects the image formed by the display device to the screen, and comprises at least one mirror, a supporter for supporting the mirror, and a frame through which the supporter is fastened to the cabinet,

wherein the mirror, the supporter and the frame are disposed entirely within a single contiguous interior space formed by the cabinet and the screen;

wherein the supporter comprises;

a supporting plate disposed between the frame and the mirror; and

a pressing plate coupled to the supporting plate, which presses and holds the mirror.

2. The projection type image display apparatus according to claim 1, wherein the cabinet comprises an inlet and an outlet, and the inlet takes in exterior air and the outlet exhausts interior air.

3. The projection type image display apparatus according to claim 2, further comprising a fan which is disposed in the single contiguous interior space and creates a current of air between an interior and an exterior of the cabinet.

4. The projection type image display apparatus according to claim 1, wherein the at least one mirror comprises:

a substrate; and

a reflector formed on the substrate.

5. The projection type image display apparatus according to claim 4, wherein the substrate comprises at least one of plastic, glass and metal materials.

6. A projection type image display apparatus comprising:

a cabinet;

a screen which is disposed in the cabinet;

a display device which is disposed inside the cabinet and forms an image;

an optical system which projects an image formed by the display device to the screen and comprises at least one mirror, a supporter for supporting the mirror, and a frame through which the supporter is fastened to the cabinet; and

a partitioning structure which partitions an interior space formed by the cabinet and the screen into at least two spaces,

wherein the mirror, the supporter and the frame are disposed entirely within one of the at least two spaces partitioned by the partitioning structure, and the screen is disposed within another of the at least two spaces.

7. The projection type image display apparatus according to claim 6, wherein the partitioning structure comprises:

a housing which is disposed in the cabinet and spatially separates the optical system from the screen; and

a window which is disposed in the housing and transmits an image projected from the optical system; and

the partitioning structure partitions the interior space into a first space in which the optical system is disposed, and a second space which is disposed behind the screen.

8. The projection type image display apparatus according to claim 7, wherein the cabinet comprises a predetermined region, the predetermined region comprising an inlet which takes in exterior air and an outlet which exhausts interior air,

wherein the predetermined region forms the first space.

9. The projection type image display apparatus according to claim 8, further comprising a fan which is disposed in the first space and creates a current of air between an interior of the first space and an exterior of the cabinet.

10. The projection type image display apparatus according to claim 6, wherein the at least one mirror comprises:

a substrate; and

a reflector formed on the substrate.

11. The projection type image display apparatus according to claim 10, wherein the substrate comprises at least one of plastic, glass and metal materials.

12. An image apparatus comprising:

a housing comprising a first hole and a second hole, the housing forming a contiguous interior;

a display device;

a mirror,

a supporter which supports the mirror, and

a frame through which the supporter is fastened to a cabinet;

wherein the display device and the mirror are disposed in the contiguous interior and the contiguous interior communicates with an exterior through the first and the second holes to cool the contiguous interior; and

wherein the supporter comprises;

a supporting plate disposed between the frame and the mirror; and

a pressing plate coupled to the supporting plate, for pressing and holding the mirror.