Projection image display

Patent metadata

Field	Value
Publication number	US-2016178994-A1
Application number	US-201514944973-A
Country	US
Kind code	A1
Filing date	Nov 18, 2015
Priority date	Dec 17, 2014
Publication date	Jun 23, 2016
Grant date	—

Abstract

A projection image display includes: a screen unit that has a screen; a projection unit that projects an image onto the screen from a back surface of the screen; a housing that houses the projection unit; a slide mechanism that supports the screen unit such that the screen unit moves in an anterior-posterior direction; a locking mechanism that restricts a movement of the slide mechanism; and an adjustment mechanism that is capable of adjusting a position of the screen unit with respect to the housing from the outside while the locking mechanism restricts the movement of the slide mechanism.

First claim

What is claimed is:

1 . A projection image display, comprising:
a screen unit that has a screen; a projection unit that projects an image onto said screen from a back surface of said screen; a housing that has a front surface on which said screen unit is located and that houses said projection unit; a slide mechanism that supports said screen unit such that said screen unit moves in an anterior-posterior direction with respect to said housing; a locking mechanism that restricts a movement of said slide mechanism; and an adjustment mechanism that is capable of adjusting a position of said screen unit with respect to said housing from the outside while said locking mechanism restricts the movement of said slide mechanism.

2 . The projection image display according to claim 1 , wherein
said locking mechanism includes a hook located on said housing, an elastic member lockable with said hook, and a locking plate on which said elastic member is located, said locking plate being attached to said screen unit with play such that said locking plate moves in the anterior-posterior direction, said adjustment mechanism includes a locking position adjustment mechanism that adjusts a locking position of said locking mechanism, and said locking position adjustment mechanism adjusts positions of said hook and said elastic member in the anterior-posterior direction by moving said locking plate in the anterior-posterior direction from the outside.

3 . The projection image display according to claim 2 , wherein
said locking position adjustment mechanism includes a hole portion located in said screen unit and a catch portion that is located on said locking plate, is exposed to the outside from said hole portion, and is movable in the anterior-posterior direction, and moving said catch portion in the anterior-posterior direction from the outside causes said locking plate to move in the anterior-posterior direction.

4 . The projection image display according to claim 1 , wherein
said adjustment mechanism includes a left-right direction adjustment mechanism, said left-and-light direction adjustment mechanism includes a first plate located on said screen unit and a first screw fixing said first plate to said screen unit from a lateral surface side of said screen unit, and said left-right direction adjustment mechanism causes said screen unit to move in a left-right direction with respect to said housing via said first plate by rotationally moving said first screw from the outside.

5 . The projection image display according to claim 1 , wherein
said adjustment mechanism includes an up-down direction adjustment mechanism, said up-down direction adjustment mechanism includes an adjustment member located in said screen unit and a second screw fixing said adjustment member to said screen unit from an upper surface side of said screen unit, and said up-down direction adjustment mechanism causes said screen unit to move in an up-down direction with respect to said housing via said adjustment member by rotationally moving said second screw from the outside.

6 . The projection image display according to claim 5 , wherein said adjustment member includes a second plate fixed with said second screw and a third plate connected to said second plate.

7 . The projection image display according to claim 1 , further comprising an alignment mechanism that aligns said screen unit and said housing, wherein
said slide mechanism includes a base plate located on said housing and a slide base that is located on said screen unit and moves along said base plate, and said alignment mechanism includes a locking portion located on said slide base and a locking groove that is located on said base plate and is lockable with said locking portion.

Assignees

• Mitsubishi Electric Corp

Inventors

• Imanishi Yuta
• Kitaguchi Akihiro

Classifications

• G03B21/58

  collapsible, e.g. foldable; of variable area · CPC title

• G03B21/562

  Screens moving during projection (G03B21/58 - G03B21/62 take precedence) · CPC title

• G03B21/56

  Projection screens · CPC title

• G02B7/003

  Alignment of optical elements (G02B7/001, G02B7/002 take precedence; for mirrors G02B7/1822) · CPC title

• G03B21/145

  Housing details, e.g. position adjustments thereof · CPC title