Portable projection screen

A projection screen, portable technology, applied in the direction of optics, instruments, projection devices, etc., can solve the problems of inconvenient portability and inconvenient use of projection screens, and achieve the effects of avoiding dust or damage, reducing weight, and being convenient to carry

CN105372921AInactive Publication Date: 2016-03-02重庆触视科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-03-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a portable projection screen, comprising a projection curtain, a first stand column and a second stand column; one side of the projection curtain is connected to the first stand column and the projection curtain is wound on the first stand column; the second stand column is provided with a groove for fixing the projection curtain; the second stand column is hollowed; the hollowed part of the second stand column can contain the first stand column, on which the projection curtain is wound; a rotation shaft is arranged under the first stand column; the lower end of the rotation shaft is provided with an end cap which is in thread cooperation with one end of the second stand column. The projection screen disclosed by the invention is portable.
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Description

technical field

[0001] The invention relates to the field of projection devices, in particular to a portable projection screen. Background technique

[0002] A projector is a device on a screen that can project images or videos. It can be connected to a computer VCD, DVD, game console, etc. 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. Moreover, the existing...

Examples

Embodiment Construction

[0013] The present invention will be described in further detail below by means of specific embodiments:

[0014] The reference signs in the drawings of the description include: the first upright pole 10 , the second upright pole 20 , the groove 21 , the projection screen 30 , the rotating shaft 40 , and the end cover 50 .

[0015] The embodiment is basically as attached figure 1 Shown: a portable projection screen, including a projection screen 30, a first pole 10 and a second pole 20, one side of the projection screen 30 is connected to the first pole 10 and the projection screen 30 can be rolled on the first pole 10 Above, the second upright pole 20 is provided with a groove 21 for fixing the projection screen 30 , the second upright pole 20 is hollow, and the hollow part of the second upright pole 20 can accommodate the first upright pole 10 wrapped with the projection screen 30 . Such as image 3 As shown, a rotating shaft 40 is provided below the first vertical rod 10 ...