CN220709533U - Support projection screen - Google Patents

Abstract

A bracket projection screen belongs to the field of projection display and comprises: supporting seat, flexible subassembly, clamping component, the curtain piece that can curl, reinforced structure, flexible subassembly detachable sets up on the supporting seat, flexible subassembly includes the telescopic link of adjustable length, clamping component with the one end of telescopic link is connected, and the curtain piece that can curl sets up on the clamping component. The clamping assembly clamps the curtain sheet and provides tension to flatten the curtain sheet in the vertical direction of the screen, the reinforcing structure provides bending resistance along the extending direction of the structure, and bending deformation of two side edges of the curtain sheet in the horizontal direction is resisted, so that a flat projection screen is provided together with the clamping assembly. The scheme of the utility model can resist the bending deformation of the side edge of the curtain sheet and provide a flat projection screen.

Description

Support projection screen

Technical Field

The application relates to the field of projection display, in particular to a bracket projection screen.

Background

The bracket projection screen is light in weight and convenient to carry, is favored by people going out for travel and camping for viewing, and after the common bracket projection screen in the market is rolled and unfolded, the screen is often deformed in the horizontal direction (the rolling axis direction) and the like, so that the viewing of pictures is seriously influenced.

Disclosure of Invention

In order to solve the technical problems, the utility model discloses a bracket projection screen, which can solve the problem of bending deformation of the side edges of a curtain sheet and provide a flat projection screen.

The specific technical scheme of the utility model is as follows:

a stand projection screen, comprising: the flexible subassembly, clamping component, the curtain piece that can curl, reinforced structure, flexible subassembly detachable sets up on the supporting seat, flexible subassembly includes the telescopic link of adjustable length, clamping component with the one end of telescopic link is connected, the curtain piece that can curl sets up on the clamping component, reinforced structure includes reinforcing part, reinforcing part includes reinforcing unit, reinforcing unit is arc platy, reinforcing unit's arc top is as supporting part and interval distribution constitutes the loading surface in order to make up, the curtain piece that can curl includes the formation of image display surface, the curtain piece that can curl keep away from the one side of formation of image display surface with the loading surface is connected.

The curled curtain sheet can be rolled up and unfolded arbitrarily, comprises an imaging display surface and can be used for imaging and displaying the image information sent by the projection light source.

The reinforcing structure comprises a reinforcing part, wherein the reinforcing part comprises reinforcing units, the reinforcing units are arc-shaped platy, and arc-shaped tops of the reinforcing units are used as supporting parts and are distributed at intervals to form a bearing surface in a combined mode; the bearing surface is connected with one surface of the curled curtain sheet far away from the imaging display surface, and the reinforced structure can also curl along the direction vertical to the extending direction of the structure, so that the screen connected with the curtain sheet can also curl at will along the direction vertical to the extending direction of the structure; the reinforced structure has stronger bending resistance along the extending direction of the structure, and can be used for resisting bending deformation of the curtain sheet along the extending direction of the reinforced structure after being curled after being connected with the curtain sheet, so that screen deformation in the direction is avoided.

The clamping assembly clamps the screen sheet and provides a tensioning force to flatten the rollable screen sheet in the vertical direction of the screen, and the reinforcing structure provides bending resistance along the extending direction of the structure to resist bending deformation of two side edges of the rollable screen sheet in the horizontal direction, so that a flat projection screen is provided together with the clamping assembly.

Preferably, the clamping assembly comprises an upper cross beam, a lower cross beam and a crank arm, wherein the lower cross beam is detachably connected with one end of the telescopic assembly, and the crank arm is respectively connected with the upper cross beam and the lower cross beam.

The clamping component can clamp the curled curtain sheet and provide tension force to flatten the curtain sheet in the vertical direction of the screen, and can wind the curled curtain sheet, and the clamping component is detachably connected with the telescopic component, so that the screen of the bracket is further convenient to store.

Preferably, any adjacent two reinforcement units are connected by a connector.

Any two adjacent reinforcing units are connected through a connecting piece, so that continuity of the reinforcing structure is realized, and the integral bending strength of the reinforcing structure can be increased through interaction between the continuous structures, so that long-acting stable connection between the curtain sheet and the reinforcing structure is maintained, and bending deformation of the curtain sheet after curling is effectively resisted.

Preferably, any adjacent two reinforcing units are connected by an inverted arc reinforcing unit.

The transition connection of two adjacent reinforcing units is realized through the connection of the inverted arc-shaped reinforcing units, and the stability of the reinforcing structure relative to the curtain sheet is maintained. The continuity of the reinforcing structure is realized by the arc-shaped reinforcing units and the inverted arc-shaped reinforcing units alternately, so that the bending resistance of the joint of the reinforcing structure and the back of the curtain sheet is ensured, the long-acting stable connection between the curtain sheet and the reinforcing structure is maintained, and the bending deformation of the curtain sheet after curling is more effectively resisted.

Preferably, any reinforcing unit is connected with the adjacent inverted arc-shaped reinforcing unit through a straight line.

Preferably, the extending directions of the arc-shaped top parts of all the reinforcement units are parallel to each other so as to form a curled bearing surface.

The reinforcing units which are parallel to each other can provide relatively uniform bending-resistant acting force for the curtain sheet, are convenient for the reinforcing structure and the curled curtain sheet to be rolled together, and keep the flatness of the screen, especially for the curled curtain sheet, the curtain sheet is favorable for uniform winding and storage, and crease formation is avoided.

Preferably, the projection screen further comprises an upper auxiliary section and a lower auxiliary section, one side edge of the upper auxiliary section is connected with the upper beam, the other side edge of the upper auxiliary section is connected with the curled curtain sheet, one side edge of the lower auxiliary section is connected with the lower beam, and the other side edge of the lower auxiliary section is connected with the curled curtain sheet.

Preferably, the size coverage area of the reinforcing structure on the projection screen is greater than or equal to 80% of the display area of the projection screen.

Preferably, the height of the reinforcing structure is less than or equal to 1% of the display width of the projection screen.

Preferably, a protective layer is further arranged on one surface of the reinforcing structure, which is far away from the rollable curtain sheet; and one surface of the substrate layer is connected with the curled curtain sheet, and the other surface of the substrate layer is connected with the reinforcing structure.

The protective layer can isolate the curtain sheet from contact with the reinforcing structure in the curling process, so that the reinforcing structure is prevented from scratching the display surface of the curtain sheet; the arrangement of the substrate layer can promote the display layer to be more flat after being unfolded.

Compared with the prior art, the device can eliminate bending deformation of the side edges of the curled curtain sheet along the horizontal direction through the arrangement of the reinforcing structure, and can tension and flatten the curled curtain sheet along the vertical direction through the arrangement of the clamping assembly, so that the screen is smoother.

Drawings

FIG. 1 is a schematic front view of a projection screen according to a first embodiment of the present application;

FIG. 2 is a schematic view of a clamping assembly according to a first embodiment of the present application;

FIG. 3 is a schematic diagram illustrating connection of a support base, a telescopic assembly and a clamping assembly according to a first embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view of a reinforcing structure according to a first embodiment of the present application;

FIG. 5 is a 3D schematic of an enhanced structure according to an embodiment of the present application;

FIG. 6 is a 3D schematic view of an arcuate plate according to one embodiment of the present application;

FIG. 7 is a schematic cross-sectional view of another reinforcing structure according to a first embodiment of the present application;

FIG. 8 is a schematic cross-sectional view of yet another reinforcing structure of a first embodiment of the present application;

FIG. 9 is a 3D schematic illustration of the size ratio of the reinforcement structure according to the first embodiment of the present application;

FIG. 10 is a schematic illustration of a variation in height and pitch of a reinforcement structure according to a first embodiment of the present application;

FIG. 11 is a schematic view of a projection screen display size according to a first embodiment of the present application;

FIG. 12 is a schematic front view of a projection screen according to a second embodiment of the present disclosure;

FIG. 13 is a schematic side view of the distribution of reinforcing structures on a projection screen according to a second embodiment of the present application;

FIG. 14 is a schematic side view of a projection screen according to a third embodiment of the present application;

wherein, the reference signs in the figures are as follows:

10-projection screen; 100-a rollable screen; 1001-upper auxiliary section; 1002-lower auxiliary section; 200-reinforcing structure; 201-an enhancement section; 2011-enhancement unit; 2012—a connector; 300-supporting seat; 400-telescoping assembly; 500-clamping assembly; 501-an upper cross beam; 502-a lower cross beam; 503-crank arm; 700-a protective layer; 800-a substrate layer; y-curtain display area; 1-arc-shaped platy; pitch of p-enhancement structures; h-height of the reinforcement structure; l-display length; k-display width.

Detailed Description

The terms used in the embodiment of the present application are only used to explain specific examples of the present application, and are not intended to limit the present application, and the expressions related to the directions in this document are all set in the direction in the plane where the screen is viewed directly opposite to the projection screen, and the directions indicated by the arrow x in fig. 1 are horizontal directions, which means the horizontal directions in the plane where the screen is viewed directly opposite to the viewer after the projection screen is hung; the arrow s indicates the vertical direction, which is the direction perpendicular to the direction indicated by x in the plane of the screen. The view shown in A-A refers to the cross-sectional shape of the projection screen after being cut in the vertical direction from the projection screen position a.

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the following specific embodiments.

Example 1

As shown in fig. 1 and 3, a stand projection screen 10 includes: support base 300, telescoping assembly 400, clamping assembly 500, rollable screen 100, reinforcing structure 200.

In this embodiment of the present application, the rollable screen 100 may be a common projection screen such as a white plastic screen, a gray screen, a metal screen, a bead screen, a screen, or an optical screen such as a fresnel optical screen, a line grating screen, a photon screen, a holographic screen, or any combination thereof, and may be rolled up and unrolled arbitrarily, or may further include at least one imaging display surface, which may be used to image the image light emitted by the projector. The rollable screen 100 may be a functional structure layer or a composite of multiple functional structure layers, such as a diffusion layer, a color layer, a filter layer, a microstructure layer, a reflective layer, and the like.

Further, the telescopic assembly 400 may be a plurality of telescopic rods which are nested with each other, the length of the telescopic rods is adjustable, locking buckles are arranged on the telescopic rods with larger relative sizes, and after the telescopic rods are stretched to a certain size or are stored, the telescopic rods are fixed through the locking buckles, so that the relative movement between the telescopic rods is prevented; one end of the telescopic assembly 400 is nested on the supporting seat 300, and the telescopic assembly 400 is detachably connected with the supporting seat 300 through buckling or threaded locking. The other end of the telescoping assembly 400 is nested or nut-connected with the clamping assembly 500, and the telescoping assembly 400 is also detachably connected with the clamping assembly 500. The telescopic assembly is detachably connected with the supporting seat and the clamping assembly, so that the projection screen can be conveniently stored and transported, the projection screen can be conveniently used in various fields, the application range of the projection screen is widened, and the projection screen has high practical value. The support base 300 may have a three-jaw grip structure, and the three jaws may be rotatably accommodated in a long bar shape along a central connection position, and each jaw may be further reduced in accommodating size by folding. Of course, the supporting seat 300 may also be a plane, and the surface may be further provided with rollers and locking devices, so that the screen may be locked and fixed after being transported to the viewing position by the rollers, which is more labor-saving.

Further, the rollable screen 100 is disposed on the clip assembly 500. The clamping assembly comprises an upper cross beam 501 and a lower cross beam 502 which are respectively arranged on two opposite sides of the curled curtain sheet 100 in the vertical direction, the upper cross beam 501 is arranged on the upper side of the curled curtain sheet 100, the lower cross beam 502 is arranged on the lower side of the curled curtain sheet 100, the upper cross beam 501 and the lower cross beam 502 jointly clamp the curled curtain sheet 100, the interval between the upper cross beam and the lower cross beam can be adjusted, and the clamping assembly is used for providing tension force of the curled curtain sheet along the vertical direction and keeping the curled curtain sheet straight. The cross sections of the upper cross beam and the lower cross beam can be rectangular, circular and the like, and when the cross sections of the upper cross beam or the lower cross beam are circular, the curled curtain sheets can be directly curled on the cross beams for winding and packaging; when the sections of the upper and lower cross beams are rectangular, circular arc-shaped parts are required to be arranged on the opposite sides of the rectangle, and then the crimpable curtain sheets are crimped on the cross beams for rolling and packaging; the winding shafts can be arranged in the upper beam and the lower beam, the opening is arranged on the beam, and the curled curtain sheet on the winding shaft penetrates out of the opening of one beam to be connected with the other beam, so that the winding, packing and unfolding of the projection screen are realized.

Further, one end of the telescoping assembly 400 may be nested or nut-connected with the lower cross member 502 of the clamping assembly 500; or may be nested or nut-connected with both the lower beam 502 and the upper beam 501 of the clamping assembly 500. When the telescopic component is in nested connection with the cross beam, the cross beam can be provided with holes, and the telescopic component is inserted into the holes of the cross beam and then fixed through the lock catches; or a section of sleeve which can be mutually nested and matched with the telescopic component is extended out of the cross beam for locking and fixing after being connected.

Further, when the rollable screen sheet is rolled and packed, the reinforcing structure 200 may be rolled in the inner layer, or the image surface of the rollable screen sheet may be rolled in the inner layer. The connection between the rollable screen 100 and the upper and lower cross members 501, 502 may be by way of adhesive, snap, clamping, etc. The upper and lower cross beams can be made of metal rods, plastic rods, glass fiber rods, carbon fiber rods and the like.

Further, as shown in fig. 2, the clamping assembly 500 may further comprise an upper beam 501, a lower beam 502, and a crank arm 503, where each arm of the crank arm 503 may be telescopic for adjusting to different screen sizes, and for fixing the clamping assembly to provide tension for the rollable screen. Each arm of the crank arm 503 can be rotated and contracted or expanded along the central position, and each arm of the crank arm 503 is detachably connected with the upper beam 501 and the lower beam 502 through nuts or buckles, and after the crank arm 503 is detached and stored, the curled curtain sheet can be wound on the upper beam or the lower beam. The current crank arm 503 may also be a hydraulic telescopic rod, and is also detachably connected with the upper and lower cross beams, so as to fix the clamping assembly to provide tension force for the curled curtain sheet.

Further, as shown in fig. 4 and 6, the reinforcing structure 200 is formed by continuously connecting a plurality of reinforcing parts 201 (the dotted circle mark parts in fig. 4), the reinforcing parts 201 are formed by continuously connecting a plurality of reinforcing units 2011 (the dotted circle mark parts in fig. 4), and the reinforcing units 2011 are arc-shaped plate-like 1.

Further, the reinforcing structure 200 may be formed into an integrated continuous strip structure by forward and reverse bending or die pressing or extrusion molding of a sheet film, and the shape of the individual reinforcing units is the same as that of an arc-shaped plate structure formed by bending a plate, and it should be noted that the arc shape herein is not only an arc shape, but also an arc shape, such as an elliptic arc shape or a parabolic curved surface, which is a curved surface, and the like, which is not exemplified herein. The bending strength of the arc-shaped surface of the arc-shaped plate-shaped structure is higher, so that the thickness of the sheet for manufacturing the reinforced structure is not required to be too thick, and the sheet with the thickness smaller than 300 mu m is preferable, and the projection screen is lighter. The sheet-like film material can be a single-layer plastic film, paper or the like, or can be a multi-layer composite plastic film, a fiber material, paper or the like.

As shown in fig. 5, the curved top portions of the reinforcement units 2011 are used as supporting portions and are distributed at intervals to form a bearing surface in a combined manner, the rollable screen 100 includes an imaging display surface, and a surface of the rollable screen 100 away from the imaging display surface is connected to the bearing surface formed by the plurality of reinforcement units. The connection is preferably adhesive, but may be a connection such as thermal fusion or magnetic attraction.

Further, the bearing surface may be a plane, a curved surface, or a bearing surface formed by the plane and the curved surface together. That is, the imaging display surface of the projection screen may be a plane surface, a curved surface, or an imaging display surface formed by a plane surface and a curved surface.

Further, the extending directions of the arc top parts of all the reinforcement units 2011 are parallel to each other to form a curled bearing surface, and the reinforcement units parallel to each other can provide relatively uniform bending-resistant acting force for the curtain sheet, are convenient for the reinforcement structure to wind together with the curled curtain sheet, and keep the flatness of the screen, especially for the curled curtain sheet, are favorable for uniform winding and storage, and avoid forming folds.

Further, as shown in fig. 1, the extending direction of the reinforcing structure 200 is set to be horizontal, which is consistent with the winding axial direction of the rollable screen sheet 100, so as to facilitate the winding and unwinding operations of the entire display screen. Meanwhile, the reinforcing units in the reinforcing structure 200 are arranged in an arc plate shape, the curved arc surface plays a supporting role, compared with a plane sheet, the bending strength of the reinforcing structure along the extending direction of the reinforcing structure is improved by a plurality of times, and after the extending direction of the reinforcing structure is connected with the curled curtain sheet along the horizontal direction, the problem that the curled curtain sheet is curled and then the left side edge and the right side edge of the curled curtain sheet are unfolded to be curled and deformed can be effectively eliminated. Therefore, after the reinforcing structure is connected to the curled curtain sheet, the screen can be curled and the curling deformation can be eliminated, so that the screen has high practical value.

As shown in fig. 7, any two adjacent reinforcement units 2011 in the reinforcement structure 200 are connected by a connector 2012, and each reinforcement unit is connected by the connector 2012 to form a whole, so as to realize continuity of the reinforcement structure, effectively ensure long-acting stable connection between the rollable screen 100 and the reinforcement structure, and avoid mutual distortion between the reinforcement structure 200 and the rollable screen 100.

Further, the connecting member 2012 between the reinforcement units 2011 is preferably a straight line segment, and the bending strength of the reinforcement structure can be further increased by supporting the reinforcement units 2011 through the straight line segment.

As shown in fig. 8, the connection 2012 between any two adjacent reinforcement units 2011 is preferably an inverted arc reinforcement unit, and the transition connection between the two adjacent reinforcement units 2011 is realized by the connection of the inverted arc reinforcement units, so as to maintain the stability of the reinforcement structure relative to the curtain sheet. The continuity of the reinforcing structure is realized by the arc-shaped reinforcing units 2011 and the inverted arc-shaped reinforcing units alternately, so that the bending resistance of the joint of the reinforcing structure and the curled curtain sheet is further ensured, the long-acting stable connection between the curtain sheet and the reinforcing structure is further maintained, and the bending deformation of the curled and unfolded curtain sheet is more effectively resisted.

As shown in fig. 9, the size coverage of the reinforcing structure 200 on the rollable screen 100 is equal to or greater than 80% of the area of the display area Y on the rollable screen 100, and the reinforcing structure is generally centrally disposed on the rollable screen, so that when the size of the reinforcing structure covers 80% or more of the display area, the curling deformation of the side edges of the screen can be well eliminated; the size coverage of the preferable reinforcing structure 200 on the rollable screen 100 is equal to 100% of the area of the display area Y on the rollable screen 100, so that the effect of resisting screen deformation is better on one hand, and on the other hand, the connection alignment of the reinforcing structure and the screen is convenient, and the production and the manufacturing are convenient.

Further, as shown in fig. 11, the size of the display area Y of the rollable screen sheet is determined according to the projection size and the screen display ratio, for example, when the screen display ratio is 16:9 and the projection size is 100 inches, the size of the display area Y of the rollable screen sheet is 2214mm, and the display width k is 1245mm; and when the screen display ratio is 16:9 and the projection size is 90 inches, the size of the display area Y of the rollable screen sheet is 1992mm in display length L and 1121mm in display width k. The projection size is various, the size of the display area Y of the screen varies with the projection size, and the coverage ratio of the reinforcing structure on the screen may be unchanged, so that the size of the reinforcing structure also varies with the variation of the projection size, and the calculation of the size relationship is very simple and is not exemplified herein.

As shown in fig. 10 and 11, preferably, the height h of the reinforcing structure 200 is less than or equal to 1% of the display width k of the projection screen, and as can be seen from the foregoing, when the display ratio of the screen is 16:9 and the projection size is 100 inches, the display width k of the projection screen is 1245mm, and the height h of the reinforcing structure 200 is less than or equal to 12.45mm; when the display ratio of the picture is 16:9 and the projection size is 90 inches, the display width k of the projection screen is 1121mm, and the height h of the enhancement structure 200 is less than or equal to 11.21mm.

Further, the height h of the reinforcing structure is reduced or increased along with the reduction of the projection size of the projection screen, so that the reason for the arrangement is that the larger the projection screen size is, the larger the curling deformation amount of the curled side edge is, the reinforcing structure with stronger bending strength is required to effectively eliminate the curling deformation, and the effective method for increasing the bending strength of the reinforcing structure is to increase the height h of the reinforcing structure, and the increased arc-shaped area of the height h is also increased, so that the bending strength is also increased; on the contrary, when the size of the projection screen is reduced, the bending deformation of the side edge of the screen is small, and the bending strength of the required reinforcing structure is also small, so that the height h of the reinforcing structure is also reduced from the aspects of saving the material cost, the whole size and weight of the screen and the like. Therefore, on the premise of eliminating the problem of side edge curling deformation of the projection screen, the change relation of the height of the reinforcing structure and the size of the projection screen is set, and the projection screen has high practical value for reducing the production and manufacturing cost of the projection screen and the size and weight of package and transportation.

Preferably, the units on the reinforcing structure are uniform in shape and size, for example, the reinforcing structure 200 forms a plurality of reinforcing portions that conform to the rollable screen 100 when bent in a front-back arc. In other words, the shape and size of the reinforcing parts constituting the reinforcing structure 200 are uniform, which facilitates mass continuous processing, manufacturing and shaping, and reduces production cost.

Further, when the shape and the size of the plurality of reinforcing portions are consistent, the bending-resistant force provided for the crimpable membrane 100 is also uniform, which is beneficial to uniformly winding and accommodating the crimpable curtain sheet, and avoids local bending transition to form crease.

Furthermore, the reinforcing part has the same shape and size as the inverted arc-shaped plate structure of the connecting piece, and the arc-shaped plate structure is centrosymmetric with the adjacent inverted arc-shaped plate structure. The setting mode is beneficial to providing more uniform bending resistance force for the curled curtain sheet 100, can realize batch continuous processing, manufacturing and forming, reduces the manufacturing cost of the reinforced structure, further reduces the cost of the whole projection screen, and is beneficial to the cost management and control of the projection screen.

Further, the entire reinforcing structure 200 is continuously wavy in shape as seen in a vertical cross section of the projection screen. The arrangement of the shapes of the units on the reinforcing structure is not unique, that is, the parameters of the arc-shaped plate-shaped structure 1 are not limited, so long as the bearing surfaces of the rolling curtain sheets connected at intervals formed by the connection of all the arc-shaped plate-shaped structures 1 are located in the same plane, as shown in fig. 10, the height h of each unit on the reinforcing structure can be gradually reduced or increased, but only the bearing surfaces for connecting the rolling curtain sheets still need to be located in the same plane, and the bending resistance effect can be realized as described above.

Further, the pitch p of the reinforcing structure may be gradually reduced or increased, and the bending resistance effect described above may be achieved.

Furthermore, the connecting pieces of the units on the reinforcing structure can be straight lines or reverse arcs, or can be partially straight lines and partially reverse arcs, and the bending resistance effect can be realized.

Further, the pitch p and the height h of the reinforcing structure can be kept consistent and unchanged, or the pitch p can be changed and the height h is unchanged; or the pitch p is unchanged, and the height h is changed; or the pitch p is changed and the height h is also changed, the bending resistance effect described above can be achieved.

Example two

As shown in fig. 12, the difference between the present embodiment and the first embodiment is that the projection screen 10 is further provided with an upper auxiliary section 1001 and a lower auxiliary section 1002, the upper side of the upper auxiliary section 1001 is connected to the upper cross member 501, the lower side is connected to the rollable screen 100, the lower side of the lower auxiliary section 1002 is connected to the lower cross member 502, and the upper side is connected to the rollable screen 100. The upper auxiliary section and the lower auxiliary section are arranged to prevent the screen surface from being directly contacted with the upper cross beam and the lower cross beam to be scratched or scratched when the screen is wound and unwound.

Further, the upper auxiliary section 1001 and the lower auxiliary section 1002 are made of plastic film, fiber cloth, PU leather, rubber, or other curled materials, and are generally gray or black, so that the reflective imaging is not easily distinguished from the curtain surface area.

Further, the upper auxiliary section and the lower auxiliary section are connected with the upper cross rod, the crimpable curtain sheet and the lower cross rod in a bonding, buckling, adsorbing or sewing mode.

Further, when a winding shaft is arranged in the upper cross beam or the lower cross beam, the upper auxiliary section and the lower auxiliary section are connected with the winding shaft.

As shown in fig. 13 a, the reinforcing structure 200 on the projection screen 10 may be provided only on the side of the rollable screen sheet away from the imaging display surface, with no reinforcing structure provided on either the upper or lower auxiliary segments; as shown in fig. 13 b, the reinforcing structure 200 on the projection screen 10 may also be provided on the side of the rollable screen sheet away from the imaging display surface and in the entire area of the upper and lower auxiliary segments; of course, the reinforcing structure 200 may also be provided in a partial region (not shown in fig. 13) on the side of the rollable screen sheet remote from the imaging display surface and on the upper and lower auxiliary segments.

Example III

As shown in fig. 14, the difference between the present embodiment and the first embodiment is that a protective layer 700 is further disposed on the side of the reinforcing structure away from the rollable screen sheet, and the protective layer can isolate the screen sheet from contact with the reinforcing structure during the rolling process, so as to avoid the reinforcing structure from scratching the imaging display surface of the screen sheet.

Further, the protective layer 700 may be a plastic film or a fiber cloth, and the protective layer may be directly adhered to the reinforcing structure and wound on the same shaft as the curtain sheet; or a layer which is separated independently and is wound and unwound separately from the curtain sheet.

Further, a base material layer 800 is further disposed between the rollable screen sheet and the reinforcing structure, one surface of the base material layer is connected to the rollable screen sheet, and the other surface is connected to the reinforcing structure. The provision of the substrate layer can promote a more planar, crimpable curtain sheet after deployment.

Further, the base material layer 800 is a plastic film, and is bonded to the curtain sheet and the reinforcing structure.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A stand projection screen, comprising: the flexible subassembly, clamping component, the curtain piece that can curl, reinforced structure, flexible subassembly detachable sets up on the supporting seat, flexible subassembly includes the telescopic link of adjustable length, clamping component with the one end of telescopic link is connected, the curtain piece that can curl sets up on the clamping component, reinforced structure includes reinforcing part, reinforcing part includes reinforcing unit, reinforcing unit is arc platy, reinforcing unit's arc top is as supporting part and interval distribution constitutes the loading surface in order to make up, the curtain piece that can curl includes the formation of image display surface, the curtain piece that can curl keep away from the one side of formation of image display surface with the loading surface is connected.

2. The bracket projection screen of claim 1, wherein the clamping assembly comprises an upper beam, a lower beam and a crank arm, the lower beam is detachably connected to one end of the telescoping assembly, and the crank arm is connected to the upper beam and the lower beam, respectively.

3. The bracket projection screen of claim 1 wherein any adjacent two reinforcement units are connected by a connector.

4. A stand projection screen according to claim 3, wherein any adjacent two reinforcing units are connected by an inverted arc reinforcing unit.

5. The bracket projection screen of claim 4 wherein any reinforcement element is connected to an adjacent inverted arc reinforcement element by a straight line.

6. The bracket projection screen of any of claims 1 to 5 wherein the directions of extension of the arcuate tops of all of the reinforcement units are parallel to one another to form a rollable bearing surface.

7. The bracket projection screen of any one of claims 1 to 5 further comprising an upper auxiliary section and a lower auxiliary section, wherein one side of the upper auxiliary section is connected to the upper beam, the other side is connected to the rollable screen, one side of the lower auxiliary section is connected to the lower beam, and the other side is connected to the rollable screen.

8. The bracket projection screen of claim 1 wherein the size coverage of the reinforcing structure on the projection screen is greater than or equal to 80% of the display area of the projection screen.

9. The stand projection screen of claim 1, wherein the height of the reinforcing structure is less than or equal to 1% of the display width of the projection screen.

10. The stand projection screen of any one of claims 8 or 9, wherein a side of the reinforcing structure remote from the rollable screen sheet is further provided with a protective layer; and one surface of the substrate layer is connected with the curled curtain sheet, and the other surface of the substrate layer is connected with the reinforcing structure.