CN2929776Y - Inflating type portable large projection screen - Google Patents

Abstract

The utility model discloses a inflatable and portable large projection curtain, comprising a large curtain (1), wherein the circumference of the large curtain is surrounded by a quadrangle airbag (2), which is stitched along sheet-like edges (3) inside the quadrangle airbag, and fixation ropes (4) is arranged in four corners of the quadrangle airbag (2). By the fixation ropes (4), four corners of the quadrangle airbag (2) are fixed in a flat, and after use, the air is driven out of the quadrangle airbag (2), and then the large curtain (1) is folded and stored. This inflatable and portable large projection not only has the advantages of simple conformation and manipulation, but also is easy to be portaged, folded and stored, thereby taking up small room. Simultaneously, the demo of two faces could be carried out in the process of usage.

Description

The portable large-scale projection screen of inflatable

Technical field

The utility model relates to a kind of improvement of projection screen, and the portable large-scale projection screen of specifically a kind of inflatable is applicable to fields such as product image, teaching demonstration, advertising.

Technical background

In work such as product image demonstration, teaching demonstration and exploitation, often image is projected to video projection devices and demonstrate on the curtain, to improve propaganda demonstration effect and quality.The curtain that uses has following two kinds substantially at present: a kind of is to adopt individual rectangle curtain to hang up on back up pad or fixation wall, this mode is comparatively suitable for less rectangle curtain, and it is easy to operate, but for the bigger rectangle curtain of width, then be difficult to rectangle curtain stretching, in the use, be difficult to eliminate the folding line that causes because of stored collapsed, thereby influence drop shadow effect; The 2nd, adopt special stand that the rectangle curtain is propped up, this special stand comprises that base, spool, hanging scroll and support bar constitute, one end of rectangle curtain twists on the spool, the other end hangs on the support bar by hanging scroll, though it is smooth that this kind support can make curtain hang, and also has weak point: the one, when rectangle curtain area was big, the volume of rolling was also bigger, weight is heavier, and carrying is inconvenient; The 2nd, special stand must adopt high-intensity support to fix, to rectangle curtain fine position difficulty; The 3rd, deposit need be bigger private space; In addition, can only the single face demonstration.

Summary of the invention

It is a kind of not only simple in structure, easy to operate that the purpose of this utility model is to provide, and easily foldingly deposit, carrying easily, and can the two sides demonstrate, be specially adapted to the portable large-scale projection screen of inflatable of large-scale curtain demonstration simultaneously.

For reaching above purpose, the technical scheme that the utility model adopted is: the portable large-scale projection screen of this inflatable, constitute by large-scale curtain, it is characterized in that centering on the quadrilateral air bag at the periphery of large-scale curtain, the peripheral edge of large-scale curtain is along sewing up fixing with the sheet edge of quadrilateral air bag inboard, after the quadrilateral air bag is full of gas, support power with quadrilateral air bag stretching by the air pressure in the quadrilateral air bag, thereby make the rapid swelling of large-scale curtain, fixed pulling rope is established in four bights at the quadrilateral air bag, be fixed in the plane by four bights of fixed pulling rope the quadrilateral air bag, after finishing using, gas in the quadrilateral air bag is driven out of, large-scale curtain is folded carry and deposit.The utility model is also implemented by following measure: left and right two angles on described quadrilateral air bag top are the duroplasts curve bend, top margin is arc air bag, both sides are the straight tube air bag, left and right two angles of bottom are the duroplasts right-angle bend, establish charging connector on a duroplasts right-angle bend therein, establishing draw ring on the lateral wall of duroplasts curve bend, set draw ring on the lateral wall of duroplasts right-angle bend, the fixed pulling rope in four bights ties up to corresponding going up on draw ring and the following draw ring respectively; Adapt with it, the top margin of large-scale curtain is the arc limit, two angles, top are arc angle, and two angles, bottom are the right angle, because the top margin of quadrilateral air bag is arc air bag, so the top margin of quadrilateral air bag can not descend to bend because of the gravity of large-scale curtain, influence the flatness of large-scale curtain, both sides are the straight tube air bag, can play upper and lower stretching effect, the base is the straight tube air bag, plays left and right stretching effect; The outer end of four bight fixed pulling ropes can be fixed on the supporting walls, and can only demonstrate by single face this moment, also can be fixed on two vertical support bars on the large-scale place, but two sides demonstration this moment.

The beneficial effects of the utility model are: prop up support with the large-scale curtain of present use and compare, and operation not only simple in structure, easy, and easily carrying, stored collapsed easily, it is little to take up room after folding, simultaneously, in use can carry out the two sides demonstration.

Description of drawings

The structure master looked synoptic diagram when Fig. 1 launched for the utility model.

Fig. 2 is the utility model quadrilateral airbag deployment synoptic diagram.

Fig. 3 is that the large-scale curtain of the utility model launches synoptic diagram.

Embodiment

Make the utility model with reference to accompanying drawing 1,2,3.The portable large-scale projection screen of this inflatable, constitute by large-scale curtain 1, periphery at large-scale curtain 1 centers on quadrilateral air bag 2, the peripheral edge of large-scale curtain 1 is along sewing up fixing with the sheet edge 3 of quadrilateral air bag 2 inboards, fixed pulling rope 4 is established in four bights at quadrilateral air bag 2, is fixed in the plane, after finishing using by four bights of fixed pulling rope 4 with quadrilateral air bag 2, gas in the quadrilateral air bag 2 is driven out of, large-scale curtain 1 is carried out stored collapsed.Left and right two angles on described quadrilateral air bag 2 tops are duroplasts curve bend 2a, top margin is arc air bag 2b, both sides are straight tube air bag 2c, left and right two angles of bottom are duroplasts right-angle bend 2d, establish charging connector 2e on a duroplasts right-angle bend 2d therein, establishing draw ring 2f on the lateral wall of duroplasts curve bend 2a, set draw ring 2m on the lateral wall of duroplasts right-angle bend 2d, the fixed pulling rope 4 in four bights ties up to respectively on corresponding draw ring 2f of going up and the following draw ring 2m; Adapt with it, the top margin of large-scale curtain 1 is arc limit 1a, and two angles, top are arc angle 1b, and two angles, bottom are right angle 1c; The outer end of four bight fixed pulling ropes 4 can be fixed on the supporting walls, and can only demonstrate by single face this moment, also can be fixed on two vertical support bars on the large-scale place, but two sides demonstration this moment.

Claims (2)

1, the portable large-scale projection screen of a kind of inflatable, constitute by large-scale curtain (1), it is characterized in that centering on quadrilateral air bag (2) at the periphery of large-scale curtain (1), the peripheral edge of large-scale curtain (1) is fixed along sewing up with the sheet edge (3) of quadrilateral air bag (2) inboard, establishes fixed pulling rope (4) in four bights of quadrilateral air bag (2).

2, the portable large-scale projection screen of inflatable according to claim 1, a left side that it is characterized in that described quadrilateral air bag (2) top, right two angles are duroplasts curve bend (2a), top margin is arc air bag (2b), both sides are straight tube air bag (2c), the left side of bottom, right two angles are duroplasts right-angle bend (2d), establish charging connector (2e) on the duroplasts right-angle bend (2d) therein, on the lateral wall of duroplasts curve bend (2a), establish draw ring (2f), set draw ring (2m) on the lateral wall of duroplasts right-angle bend (2d), the fixed pulling rope in four bights (4) ties up to corresponding going up on draw ring (2f) and the following draw ring (2m) respectively; The top margin of large-scale curtain (1) is arc limit (1a), and two angles, top are arc angle (1b), and two angles, bottom are right angle (1c).

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