Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Bottom-up projection screen

A projection screen, bottom-up technology, applied in optics, instruments, projection devices, etc., can solve the problems of screen damage, inconvenient screen retraction, and difficulty in retracting the screen. Effect

Active Publication Date: 2016-04-06
南京道图信息技术有限公司
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although this patent can quickly set up its projection screen from bottom to top when in use, because the above-mentioned solution uses a motor to drive the screw to realize the movement of the screen, and because the screen is soft, when the screen moves down, it is difficult to move the screen. Drive the reel to rotate and put up the curtain, so it is inconvenient to put away the curtain and it is easy to cause damage to the curtain

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
  • Bottom-up projection screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention will be described in further detail below by means of specific embodiments:

[0015] The reference numerals in the accompanying drawings include: workbench 10 , motor 20 , slide bar 30 , reel 40 , projection screen 41 , lifting rod 50 , slider 60 , electromagnet 70 , and universal wheel 80 .

[0016] The embodiment is basically as attached figure 1 Shown: a bottom-up projection screen, including a reel 40, a projection screen 41 wound on the reel 40, a workbench 10, a slider 60, a lifting rod 50 and a motor 20, and the workbench 10 is provided with a concave Groove, reel 40 and motor 20 are all located in the groove and one end of reel 40 is connected with workbench 10 rotation, and the other end of reel 40 is connected with output end of motor 20, and workbench 10 is provided with two parallel slide bars 30, two The upper ends of the slide bars 30 are provided with an electromagnet 70, and the two slide bars 30 are slidably connected with a slide...

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

The invention discloses a bottom-up projection screen. The projection screen comprises a scroll and a projection curtain scrolled on the scroll. The projection screen further comprises a worktable, sliding parts, a lifting rod, a motor and a controller. A groove is formed in the worktable; the scroll and the motor are both located in the groove and one end of the scroll is rotationally connected with the worktable while the other end of the scroll is connected with the output end of the motor; two parallel sliding rods are arranged on the worktable; an electromagnet is arranged at the upper end of each of the two sliding rods; each of the two sliding rods is in sliding connection with the sliding part; magnetic parts matched with the electromagnets are arranged on the sliding parts; one end of the projection curtain is connected with the lifting rod; two ends of the lifting rod are connected with the two sliding parts respectively; and the motor and the electromagnets are all electrically connected with the controller. The projection screen is convenient to mount and scroll.

Description

technical field [0001] The invention relates to the field of projection devices, in particular to a bottom-up projection screen. Background technique [0002] A projector is a device on a screen that can project images or videos. It can be connected to computer VCD, DVD, and game console lights through different interfaces to play corresponding video signals. Projectors are widely used in homes, offices, schools and entertainment venues. [0003] Generally, when using a projector, there must be a projection screen to cooperate with the projector. When projecting, you first need to place the projection screen. Existing projection screens are generally all reel-type, usually rolled up, and when used, the reel rotates and the screen is put down. And sometimes when the projector needs to be used outdoors or in an emergency, if the projection screen is installed, an additional bracket is required to fix the reel, which brings great inconvenience to the use. [0004] The paten...

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
IPC IPC(8): G03B21/58
CPCG03B21/58
Inventor 任博
Owner 南京道图信息技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com