Unlock instant, AI-driven research and patent intelligence for your innovation.

Projection display device

A technology for display devices and projection ports, applied in projection devices, optics, instruments, etc., can solve problems such as lens cover obstacles, lens cover enlargement, projection lens enlargement, etc., and achieve the effect that it is not easy to become an obstacle

Active Publication Date: 2012-07-04
SANYO ELECTRIC CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in the case of this structure, since the removed lens cover is placed around the main body case, the lens cover becomes an obstacle
Especially in the case of using a short focal length type projection lens, the projection lens becomes larger and the lens cover becomes larger accordingly
Therefore, the lens cover is more likely to become an obstacle

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Projection display device
  • Projection display device
  • Projection display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0051] figure 1 It is a perspective view showing the external configuration of the projector. figure 1 (a) is a perspective view of the projector in a state where the lens cover 5 is not attached, figure 1 (b) is an enlarged perspective view of the front part of the projector. figure 2 (a) and (b) are a plan view and a bottom view showing the external configuration of the projector, respectively.

[0052] refer to figure 1 and figure 2 , the projector includes a main body casing 1 . The main body case 1 includes a lower case 11 and an upper case 12 covering the lower case 11 from above.

[0053] The lower case 11 is formed in a shallow-bottomed box shape with an open upper surface. The lower case 11 is formed so that the front surface 11F is higher than the left and right side surfaces 11L, 11R and the rear surface 11B. The left and right side surfaces 11L, 11...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A projection display device includes a projecting portion (3) which enlarges and projects light modulated by an imager (209,214,222); a projection port (121) which is formed in a main body cabinet (1), and passes light emitted from the projecting portion (3); and a cover (4) which covers the projection port (121). In this arrangement, the main body cabinet is formed with a first attachment portion (1a) for attaching the cover thereon in covering the projection port (4), and a second attachment portion (2a) for attaching the cover detached from the first attachment portion thereon.

Description

technical field [0001] The present invention relates to a projection display device for amplifying and projecting light modulated by a light modulation element. Background technique [0002] Conventionally, in a projector, light modulated by a light modulation element such as a liquid crystal panel is projected onto a projected surface by a projection lens. In such projectors, when the projection lens is dirty, the quality of the image is degraded. Therefore, when the projector is not in use, the projection lens is covered with a lens cover. [0003] For example, in such a projector, a structure may be adopted in which a lens cover is fixed so as to be slidable with respect to the main body casing between a position covering the projection lens and a position away from the projection lens (for example, see Patent Document 1, Patent Document 2). [0004] Patent Document 1: Japanese Patent Laid-Open No. 2006-278236 [0005] Patent Document 2: Japanese Patent Laid-Open No. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/14G03B21/00
CPCG03B21/14G03B21/145G03B21/208
Inventor 山本祐介桥场祐治猿渡俊弘
Owner SANYO ELECTRIC CO LTD