CN115236931A - Rollable projection screen and projection system - Google Patents
Rollable projection screen and projection system Download PDFInfo
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- CN115236931A CN115236931A CN202211149232.4A CN202211149232A CN115236931A CN 115236931 A CN115236931 A CN 115236931A CN 202211149232 A CN202211149232 A CN 202211149232A CN 115236931 A CN115236931 A CN 115236931A
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- G—PHYSICS
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- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
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- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application discloses projection screen and projection system can roll up belongs to the projection display field, and a projection screen can roll up has a rolling axis direction, projection screen can roll up includes: the film comprises an imaging display surface and can be rolled; and the reinforcing component is pasted and arranged on the opposite side face of the imaging display surface of the diaphragm and comprises at least one reinforcing structure, the reinforcing structure is of a long strip-shaped structure, and the extending direction of the reinforcing structure is consistent with the winding axis direction. In this application, reinforced structure's extending direction with the rolling axis direction of rollable projection screen is unanimous for but provide the bending strength of rollable projection screen at rolling axis direction, perpendicular to rolling axis direction for can unroll behind the rolling of rollable projection screen, level and smooth non-deformable, and then make whole projection system formation of image display image non-deformable, whole picture levels.
Description
Technical Field
The application relates to the technical field of projection display, in particular to a rollable projection screen and a projection system.
Background
In the prior art of projection display, a rollable projection screen is usually made of a rollable sheet material to realize the rolling function, and compared with a projection screen which can not be rolled, the rollable projection screen has many benefits, one is that the volume of package and transportation after rolling is reduced, and the difficulty and cost of package and transportation are reduced; secondly, the projection screen can be rolled up to facilitate the entrance, and a 120-inch hard flat screen is difficult to enter a family through an elevator, so that the large-size projection is difficult to popularize in the family; thirdly, when the foldable projection screen is not used after being installed, the foldable projection screen can be curled up, so that the environment is more attractive.
However, in the practical situation, when the foldable projection screen is unfolded after being rolled, a plurality of disadvantages occur. Fig. 1 is a schematic diagram of a rollable projection screen in the prior art that is rolled, unfolded and laid on a horizontal plane, and it can be seen that: the rollable projection screen 1100 is rolled and then unfolded, and the rollable projection screen has the problems of arching, warping and wavy lines, particularly, the problems are more serious in the peripheral edge area, and the rollable projection screen cannot be restored to be flat by means of the rollable projection screen. Fig. 2 is a schematic view of a rollable projection screen of the prior art that is rolled and then unfolded and hung on a wall surface, and it can be seen that: the rollable projection screen 1100 is rolled and then unfolded and hung, and the problem of unevenness such as arching warping and wavy lines still exists through the gravity of the rollable projection screen. In the prior art, the problem of deformation such as arching and warping and wavy lines of a rollable projection screen can cause the whole or local distortion and deformation of a projected image, and the film viewing effect is seriously influenced.
Disclosure of Invention
The application provides a projection screen can roll up, through the design that includes at least one reinforced structure's reinforcement assembly, effectively solved prior art's rolling back expansion of projection screen can roll up, the problem of unevenness such as warpage, raised grain appears.
The technical scheme of this application provides a projection screen can roll up, has a rolling axis direction, projection screen can roll up includes:
the film comprises an imaging display surface and can be rolled; and
the reinforcing component is pasted and set up on the contralateral surface of the formation of image display surface of diaphragm, the reinforcing component includes at least one reinforced structure, reinforced structure is rectangular shape structure, reinforced structure's extending direction with rolling axis direction is unanimous.
In this application, the reinforcement component is pasted and is set up on the contralateral surface of the formation of image display surface of diaphragm, no matter can roll up projection screen be in rolling-up state or the state of expansion promptly, reinforcement component and diaphragm are all pasted.
In the application, the extending direction of the reinforcing structure is consistent with the direction of the winding axis, when the foldable projection screen is wound, the winding force of the reinforcing structure is small, so that the foldable projection screen is easy to wind, the foldable projection screen can be wound into various sizes, and the packaging, transportation, storage and entrance are convenient; in addition, reinforced structure's extending direction with rolling axis direction is unanimous for but offer the bending strength of rolling projection screen at rolling axis direction, perpendicular to rolling axis direction, expand again after rolling up the rolling projection screen of can rolling projection screen, reinforced structure's bending strength can be used to resist deformation such as rolling projection screen self hunch-up warpage, raised wave, but the planarization after the reinforcing rolling projection screen expandes, but make and expand after the rolling projection screen rolling, level and smooth non-deformable, and then formation of image display image non-deformable, whole picture is level and smooth.
Further, the reinforcing component comprises at least two reinforcing structures, and the reinforcing structures are arranged side by side at intervals.
In this application, reinforced component includes two at least reinforced structure that the interval set up side by side, but expandes after guaranteeing rolling projection screen rolling, levels on non-deformable's the basis, reduces reinforced structure's quantity, and then reduces the manufacturing process and the whole weight of rollable projection screen.
Furthermore, in the direction perpendicular to the rolling axis, the cross section of the reinforcing structure is triangular, arc-shaped, rectangular, trapezoidal, "T" shaped or "I" shaped.
In this application, through the design of reinforced structure cross sectional shape, increased reinforced structure's bending strength, reduced reinforced structure to the reliance of material itself, if when selecting reinforced structure material itself material, the bending strength that does not require the material of preparation reinforced structure must be greater than the bending strength of the diaphragm that can roll up for reinforced structure's material selection scope is wider, more has universal applicability.
Further, the reinforcing structure is a hollow structure.
In the application, the reinforcing structure is a hollow structure, so that the whole weight of the reinforcing structure is reduced, and further, the whole weight of the foldable projection screen is reduced.
Furthermore, reinforced structure passes through the mode setting that the elasticity glued the bonding and is in the offside of the formation of image display surface of diaphragm, perhaps reinforced structure and substrate integrated into one piece back, rethread elasticity glue paste the substrate and set up the offside of the formation of image display surface of diaphragm.
In this application, elastic glue itself has shrink and extension characteristic, in can rolling up projection screen rolling in-process, can alleviate the stress/tension between diaphragm and reinforced structure or the substrate, avoids destroying the adhesive structure between reinforced structure or substrate and the diaphragm.
Further, in the winding axis direction, the length of the reinforcing structure is greater than or equal to 90% of the length of the membrane.
In the present application, the length of the reinforcing structure is greater than or equal to 90% of the length of the membrane, so that the reinforcing structure maintains greater bending strength in the extending direction, and the flatness of each position of the membrane is higher.
Furthermore, the rollable projection screen further comprises a rolling shaft and a weight rod, wherein the rolling shaft and the weight rod are arranged in the rolling axis direction and are positioned at two opposite edges of the diaphragm.
In the application, the winding shaft is used for winding and unwinding the rollable projection screen and is used as a hanger for mounting the rollable projection screen; the counterweight rod is used for improving the flatness of the rollable projection screen.
Furthermore, the rollable projection screen further comprises a rolling shaft and a lifting mechanism; the winding shaft is arranged in the winding axis direction and is positioned at the edge of the membrane; the lifting structure is arranged on one side, close to the reinforcing structure, of the membrane.
In the application, the winding shaft is used for winding and unwinding the foldable projection screen and providing unwinding resistance; the lifting mechanism is used for supporting and unfolding the screen.
Further, the rollable projection screen may further comprise a layer of elastic material disposed on a side of the reinforcement member remote from the membrane.
In this application, reinforced structure keeps away from one side of diaphragm sets up the elastic material layer for but the protection rolling projection screen rolling or expand the back difficult by the fish tail. When the elastic material layer is rolled in the inner layer, the elastic material layer has contractibility; when the elastic material layer is rolled on the outer layer, the elastic material layer has ductility, and the projection screen can be rolled conveniently.
Further, the elastic material layer is formed of at least one of a polyurethane film, a polyethylene film, a polypropylene film, a polyamide film, a polypropylene film, a polystyrene film, a styrene film, and a silicone film.
In the present application, the raw materials used for manufacturing the elastic material layer are more, and not limited to some raw materials, and in the actual use process, some raw materials with more economical prices can be selected as much as possible to control the production and manufacturing cost of the whole rollable projection screen.
Further, the diaphragm is a white plastic screen, a metal screen, a Fresnel optical screen or a line grating screen.
In the application, the diaphragm is any one of a white plastic screen, a metal screen, a Fresnel optical screen or a linear grating screen and is used for imaging display; and selecting the corresponding diaphragm according to actual requirements.
Based on above-mentioned projection screen that can roll, this application still provides a projection system, and projection display's image non-deformable, whole image roughness is high.
The technical scheme of this application still provides a projection system, including above-mentioned any but the coiling projection screen and to but the projector of coiling projection screen projection image light.
Drawings
FIG. 1 is a schematic view of a prior art rollable projection screen rolled, unfolded, and laid flat on a horizontal surface;
FIG. 2 is a schematic view of a prior art rollable projection screen being rolled and then unfolded and hung on a wall surface;
FIG. 3 is a schematic diagram of a projection system according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a projection system according to an embodiment of the present application;
FIG. 5 is a schematic view of a reinforcement structure according to an embodiment of the present application;
FIG. 6 is another schematic view of a reinforcement structure according to an embodiment of the present application;
FIG. 7 is a schematic view of an arrangement of reinforcing structures on a membrane according to an embodiment of the present application;
FIG. 8 is a schematic view of another arrangement of reinforcing structures on a membrane in accordance with embodiments of the present application;
FIG. 9 is a schematic diagram of a rollable projection screen size according to an embodiment of the present application;
FIG. 10 is a schematic view of another size of a rollable projection screen according to an embodiment of the present application;
FIG. 11 is a schematic diagram of a rollable projection screen according to an embodiment of the present application;
FIG. 12 is a schematic view of a reinforcing structure formed on a membrane according to an embodiment of the present application;
FIG. 13 is another schematic view of a rollable projection screen according to an embodiment of the present application;
FIG. 14 is a schematic view of another exemplary retractable projection screen according to the present application;
FIG. 15 is a schematic view of another exemplary retractable projection screen according to the present application;
FIG. 16 is a schematic diagram of a hanging rollable projection screen according to an embodiment of the present application;
FIG. 17 is a schematic view of a rollable projection screen as a drop curtain, according to an embodiment of the present application;
FIG. 18 is a schematic diagram of a lifting mechanism of a rollable projection screen according to an embodiment of the present application.
Wherein, the reference numbers in the figures mean:
1000-a projection system; 1100-rollable projection screen; 110-a membrane; 120-a reinforcing structure; 130-a layer of elastomeric material; 140-elastic glue; 150-a take-up reel; 160-counterweight rod; 170-a substrate; 180-a lifting mechanism; 1200-a projector; 200-a wall surface; 300-a box body; g-a viewer; x-the direction of the winding axis; y-is vertical to the direction of the winding axis; t-image light.
Detailed Description
The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.
FIG. 3 is a schematic diagram of a projection system according to an embodiment of the present application; fig. 4 is a schematic structural diagram of a projection system according to an embodiment of the present application.
The projection system 1000 includes a rollable projection screen 1100 and a projector 1200 that projects image light T to the rollable projection screen 1100. The rollable projection screen 1100 comprises a membrane 110 and at least one reinforcing structure 120, the membrane 110 comprising an imaging display surface and being rollable; the reinforcing structure 120 is adhered to the side opposite to the imaging display surface of the film 110, that is, the imaging display surface of the film 110 faces the projector 1200 and the viewer G, and the side of the film 110 away from the projector 1200 and the viewer G is the side opposite to the imaging display surface of the film 110. The image light T emitted from the projector 1200 is incident on the rollable projection screen 1100 to be imaged, and the imaged image light T is reflected by the rollable projection screen 1100 and then emitted to the visible range of the viewer G to be received by the viewer G.
In the embodiment of the present application, the bending strength of the film 110 is enhanced by the design of the at least one reinforcing structure 120, so that the rollable projection screen 1100 is rolled and then unfolded, and is flat and not easily deformed, and further, the whole projection system 1000 is not easily deformed in the imaging display image, and the flatness of the whole screen is high.
As a specific example of the embodiment of the present application, the projector 1200 may be any one of a long-focus projector, a short-focus projector, and an ultra-short-focus projector; the projector light source can be a laser light source and an LED light source, and the laser light source can be a monochromatic laser, a bicolor laser or a tricolor laser.
The following describes the rollable projection screen in the projection system in detail with reference to fig. 5 to 15.
In the embodiment of the application, x represents the winding axis direction, and y represents the direction perpendicular to the winding axis. Referring to fig. 4, the extending direction of the reinforcing structure 120 disposed in the rollable projection screen 1100 is consistent with the rolling axis direction x, and is used to provide the rollable projection screen 1100 with bending strength in the rolling axis direction x and perpendicular to the rolling axis direction y, so that the rollable projection screen 1100 is rolled and then unfolded, and is flat and not easily deformed, and further, the imaging display image is not easily deformed, and the whole image is flat.
In the embodiment of the application, the extending direction of the reinforcing structure 120 is consistent with the rolling axis direction x, when the rollable projection screen 1100 is rolled, the rolling force of the reinforcing structure 120 is small, so that the rollable projection screen 1100 is rolled more easily, the rollable projection screen 1100 can be rolled into various sizes, and the packaging, transportation, storage and entry are more convenient; in addition, the foldable projection screen 1100 is folded and then unfolded, and the bending strength of the reinforcing structure 120 can be used for resisting the deformation of the foldable projection screen 1100 such as arching, warping and wave lines, and the like, so that the flatness of the foldable projection screen 1100 after being unfolded is enhanced.
Further, after the rollable projection screen 1100 is hung or supported, the reinforcing structure 120 can also provide an acting force for resisting the deformation of the membrane 110 for the membrane 110, so that the membrane 110 is more flat, and the flatness of the whole rollable projection screen 1100 is further ensured.
As a specific example of the embodiment of the present application, fig. 5 is a schematic view of a reinforcing structure of the embodiment of the present application. As shown in a of fig. 5, the reinforcing structure 120 is a triangular prism structure, and the cross-sectional shape of the reinforcing structure 120 in the direction perpendicular to the rolling axis y is a triangle; as shown in b of fig. 5, the reinforcing structure 120 is an arc-shaped cylindrical structure, and the cross-section of the reinforcing structure 120 in the direction perpendicular to the rolling axis y is arc-shaped; as shown in c of fig. 5, the reinforcing structure 120 is a rectangular parallelepiped structure, and the cross-sectional shape of the reinforcing structure 120 perpendicular to the rolling axis direction y is rectangular; as shown in d of fig. 5, the reinforcing structure 120 is a trapezoidal column structure, and the cross section of the reinforcing structure 120 in the direction perpendicular to the rolling axis y is trapezoidal; as shown in e of fig. 5, the reinforcing structure 120 is a T-shaped structure, and the cross-section of the reinforcing structure 120 in the direction perpendicular to the rolling axis y is T-shaped; as shown in f of fig. 5, the reinforcing structure 120 is an I-shaped structure, and the cross-sectional shape of the reinforcing structure 120 in the direction perpendicular to the winding axis y is an I-shape; as shown in g of fig. 5, the reinforcing structure 120 has a V-shaped structure, and the cross-sectional shape of the reinforcing structure 120 perpendicular to the rolling axis direction y has a V-shape. In the direction y perpendicular to the winding axis, the combination of the cross-sectional shapes of the reinforcing structures 120 may be a combination of any one of the above cross-sectional shapes arranged adjacently or at intervals, a combination of any two of the above cross-sectional shapes arranged adjacently or at intervals, or a combination of three or more of the above cross-sectional shapes.
Taking the diagram a in fig. 5 as an example, the cross-sectional shape of the reinforcing structure 120 in the direction perpendicular to the rolling axis y is a triangle, and since the triangle has high stability, it is beneficial to improve the bending strength of the reinforcing structure 120, and the size of the reinforcing structure 120 can be changed by adjusting the vertex angle and the side length of the triangle, so as to reduce the manufacturing difficulty of the rollable projection screen 1100.
By providing the reinforcing structure 120 with the cross-sectional shape as described above, the bending strength of the reinforcing structure 120 is enhanced, and the dependence of the reinforcing structure 120 on the material itself is reduced, for example, when the material itself of the reinforcing structure 120 is selected, the bending strength of the material for manufacturing the reinforcing structure 120 is not required to be greater than the bending strength of the windable membrane 110, so that the material selection range of the reinforcing structure 120 is wider and the general applicability is higher. Specifically, the reinforcing structure 120 may be made of non-metal materials such as PET, PC, PMMA, and paper, or common metal materials such as aluminum and copper, so that the implementation is more convenient and the practicability is higher.
On the basis of the reinforcing structure 120 in fig. 5, the cross-sectional shape of the reinforcing structure 120 perpendicular to the rolling axis direction y is a hollow structure, that is, the reinforcing structure 120 is a hollow structure, and the opening direction of the reinforcing structure 120 is consistent with the rolling axis direction x. Through the reinforcing structure 120 with the hollow structure, the whole weight of the reinforcing structure 120 is reduced, so that the whole weight of the foldable projection screen 1100 is reduced, and transportation, home installation and the like of the foldable projection screen 1100 are facilitated. In addition, when the cross-sectional area of the reinforcing structure 120 perpendicular to the rolling axis direction y is the same, the bending strength of the reinforcing structure 120 with the hollow structure is equivalent to that of the solid reinforcing structure 120, that is, the reinforcing structure 120 with the hollow structure does not reduce the bending strength of the reinforcing structure 120 itself, and the weight of the solid reinforcing structure 120 is several times that of the reinforcing structure 120 with the hollow structure, so that the reinforcing structure 120 with the hollow structure not only can ensure the bending strength of the reinforcing structure 120, maintain the flatness of the rollable projection screen 1100, but also can reduce the weight thereof, thereby reducing the weight of the entire rollable projection screen 1100.
As a specific example of the embodiment of the present application, fig. 6 is another schematic diagram of the reinforcing structure of the embodiment of the present application, and the reinforcing structure 120 is a hollow structure, and an extending direction of the hollow structure is consistent with the retractable axis direction x. As shown in a of fig. 6, in the direction y perpendicular to the winding axis, the cross-sectional shape of the reinforcing structure 120 can be seen, and the cross-sectional shape of the hollow structure is circular; as shown in b of fig. 6, the cross-sectional shape of the reinforcing structure 120 in the direction y perpendicular to the winding axis can be seen, and the hollow structure is square; as shown in c of fig. 6, the cross-sectional shape of the reinforcing structure 120 in the direction y perpendicular to the winding axis can be seen, and the hollow structure is triangular.
In addition to the above shapes, the hollow structure may be other polygonal or anisotropic shapes. It should be added that, when the cross-sectional shape of the reinforcing structure 120 is a shape with a certain thickness as shown in fig. 5 a to d, the reinforcing structure 120 may be directly perforated to form a hollow structure with various shapes; when the cross-sectional shape of the reinforcing structure 120 is as shown in fig. 5 e to g, the reinforcing structure 120 itself is a thin sheet, and is light in weight, and it is not necessary to use a hollow core.
Fig. 7 is a schematic view of an arrangement of the reinforcing structure on the membrane according to the embodiment of the present application. The plurality of reinforcing structures 120 are arranged on the opposite side of the film 110, which is used for an imaging display surface, and the plurality of reinforcing structures 120 are sequentially arranged adjacently in a direction perpendicular to the winding shaft direction y, and the extending direction of the reinforcing structures 120 is consistent with the winding shaft direction x. When several reinforcing structures 120 are arranged adjacently, they may be arranged side by side as shown in fig. 7, or they may be arranged in staggered rows (not shown).
FIG. 8 is a schematic view of another arrangement of the reinforcing structure of the embodiment of the present application on a membrane. The difference from fig. 7 is that: a space exists between adjacent reinforcing structures 120. The spacing distance between adjacent reinforcing structures 120 may or may not be the same. In addition, when the reinforcing structures 120 are arranged at intervals, they may be arranged side by side as shown in fig. 8, or they may be arranged in staggered rows (not shown in the figure).
The specific arrangement of the reinforcing structures 120 may be selected according to the material, size, and application scenario of the film 110, so as to reduce the difficulty of the manufacturing process of the rollable projection screen 1100, and reduce the weight of the rollable projection screen 1100 on the basis of ensuring the flatness of the rollable projection screen 1100. For example, when the membrane 110 itself is made of a hard material, the membrane is difficult to flatten due to arching and warping after being rolled, and the reinforcing structures 120 are arranged adjacently, so that the number of the reinforcing structures 120 is increased, and the total bending strength of the reinforcing structures 120 is increased; when the membrane 110 is made of a soft material, the reinforcing structures 120 are arranged at intervals, so that the number of the reinforcing structures 120 is reduced, and the weight of the rollable projection screen 1100 is reduced on the basis of ensuring the total bending strength of the reinforcing structures 120; in order to optimize the arrangement of the reinforcing structures 120 arranged at intervals, it is preferable that the intervals are the same to facilitate the arrangement of the reinforcing structures 120.
Further additional description is provided in connection with the size of the rollable projection screen 1100.
FIG. 9 is a schematic diagram illustrating dimensions of a rollable projection screen according to an embodiment of the present application; FIG. 10 is a schematic view of another size of a rollable projection screen according to an embodiment of the present application. In the take-up axis direction x, the screen length is denoted by W and the reinforcement length is denoted by L. As shown in FIG. 9, the length L of the reinforcing structure 120 is set to be equal to or greater than 90% of the length W of the diaphragm 110, i.e., L is equal to or greater than 0.9W, so that the reinforcing structure 120 maintains a strong bending strength in the extending direction. As shown in fig. 10, the length L of the reinforcing structure 120 is set to be greater than the length W of the diaphragm 110, i.e., L > W, so that the reinforcing structure 120 maintains a strong bending pressure. As can be seen from fig. 9 and 10, the length L of the reinforcing structure 120 is greater than or equal to 90% of the length W of the diaphragm 110, and the reinforcing structure 120 as a whole extends along the rolling axis direction x, so that the reinforcing structure 120 can maintain a greater bending strength in the extending direction, and the flatness of the diaphragm 110 at various positions can be improved. When the length L of the reinforcing structure 120 is less than 90% of the length W of the diaphragm 110 in the take-up axis direction x, although the reinforcing structure 120 itself has a strong bending strength, since the reinforcing structure 120 is too short, the compressive strength is hardly transmitted to the entire face of the diaphragm 110, and the area of the diaphragm 110 not connected to the reinforcing structure 120 is still liable to suffer from bowing. Obviously, it is not limited to provide the reinforcing structure 120 with a longer length, and the longer the length of the reinforcing structure 120, the larger the area of the membrane 110 connected to the reinforcing structure 120, which is beneficial to promote flatness of the membrane 110. In combination with the overall packaging size limitation and the aesthetic requirement of the foldable projection screen 1100, it is not necessary to provide an overlong reinforcing structure 120, for example, the length of the reinforcing structure 120 does not exceed the length of the film 110 too much, as long as the requirement of flatness of the foldable projection screen 1100 is satisfied, and the situations that the material is wasted and the aesthetic appearance is affected due to overlong reinforcing structure 120 are avoided.
By way of further explanation, the overall bending strength of the plurality of reinforcing structures 120, which is a major factor affecting the flatness of the rollable projection screen 1100, is dependent on the arrangement, shape and length of the individual reinforcing structures 120, while the thickness and width of the individual reinforcing structures 120 have a relatively small effect on the overall bending strength.
As a specific example of the embodiment of the present application, the rollable projection screen 1100 further includes an elastic glue 140 disposed between the reinforcing structure 120 and the film 110, in addition to the rollable film 110 and the reinforcing structures 120 disposed on the opposite side of the image display surface of the film 110, that is, the reinforcing structures 120 and the film 110 are adhered together by the elastic glue 140.
Fig. 11 is a schematic diagram of a foldable projection screen 1100 according to an embodiment of the present application, in which when the foldable projection screen 1100 is folded, the image display surface of the film 110 is taken as an inner side for folding, and the elastic glue 140 has contraction and expansion characteristics, so that during the folding of the foldable projection screen 1100, the stress/tension between the film 110 and the reinforcing structure 120 can be relieved, and the adhesive structure between the reinforcing structure 120 and the film 110 can be prevented from being damaged.
FIG. 12 is a schematic view of a reinforcing structure formed on a membrane according to an embodiment of the present application. As shown in fig. 12 a, a strip of reinforcing structures 120 is directly adhered to the opposite side of the imaging display surface of the membrane 110 by the elastic glue 140; as shown in fig. 12 b, a plurality of reinforcing structures 120 are connected and then adhered to the membrane 110 through the elastic glue 140; as shown in c of fig. 12, firstly, the reinforcing structures 120 are adhered to the base material 170 one by one through the elastic glue 140, and secondly, the side of the base material 170 away from the reinforcing structures 120 is adhered to the membrane 110; as shown in d of fig. 12, a plurality of reinforcing structures 120 are connected and then adhered to the substrate 170 through the elastic glue 140, and the side of the substrate 170 away from the reinforcing structures 120 is adhered to the membrane 110; as shown in fig. 12 e, the reinforcing structure 120 and the substrate 170 are integrally formed and then adhered to the membrane 110 by the elastic glue 140. When the substrate 170 is selected to be adhered to the film 110, the adhesive used for adhering should preferably have elasticity so as to facilitate rolling of the rollable projection screen 1100. The material of the substrate 170 may be PET, PC, PMMA, TPU, paper, fiber cloth, and other common rollable materials.
To explain further, the reinforcing structure 120 may be a single layer structure or a multi-layer laminated structure in the foldable projection screen 1100, and is selected according to the difficulty of the manufacturing process and the flatness requirement of the foldable projection screen 1100, and preferably, a single layer structure is used, so that the manufacturing process is easy and the flatness requirement of the foldable projection screen 1100 can be satisfied.
FIG. 13 is another schematic view of a rollable projection screen according to an embodiment of the present application; the difference with fig. 11 is that when the rollable projection screen 1100 is rolled, the reinforcing structure 120 is rolled inside the membrane 110.
That is, the rollable projection screen 1100 according to the embodiment of the present application can be rolled without affecting the flatness of the rollable projection screen 1100 after being unrolled, regardless of whether the reinforcing structure 120 is inside or the imaging display surface of the film 110 is inside.
As a specific example of the present application, the elastic glue 140 may be polyacrylic elastic glue, epoxy elastic glue, polyurethane elastic glue, silicone rubber elastic glue, EVA hot melt glue, polyamide hot melt glue, polyester hot melt glue, polyolefin hot melt glue, polyvinyl chloride plastic, polyvinyl acetate, neoprene, or the like, which has strong adhesiveness and has strong elastic and elastic properties after being cured.
As a specific example of the present application, as shown in fig. 14 and 15, a rollable projection screen 1100 includes, in addition to a rollable film 110 and a number of reinforcing structures 120 disposed on the side of the film 110 opposite the image display surface, a layer of resilient material 130 disposed on the side of the reinforcing structures 120 remote from the film 110.
As shown in fig. 14, the overall length of the elastic material layer 130 in the direction perpendicular to the rolling axis y is equal to the length of the membrane 110 in the direction, when the elastic material layer 130 is rolled in the inner layer, the rolling stress can be released by the contractibility of the elastic material itself, and when the elastic material layer 130 is rolled in the outer layer, the rolling tension can be released by the extensibility of the elastic material itself, so as to eliminate the resistance of the elastic material layer 130 to the rolling of the membrane 110, thereby facilitating the rolling of the rollable projection screen 1100.
As shown in fig. 15, the difference from fig. 14 is that the gap area between adjacent reinforcing structures 120 of the elastic material layer 130 on the rollable projection screen 1100 is set to be longer redundant, so that the overall length of the elastic material layer 130 in the direction perpendicular to the rolling axis y is greater than the length of the film in the direction, so that when the rollable projection screen 1100 is rolled, the elastic material layer 130 has a redundant length greater than the gap area interval in any adjacent reinforcing structure 120 gap area, and the elastic material layer 130 can be easily compressed or extended, further eliminating the resistance of the elastic material layer 130 to rolling of the film 110, and facilitating rolling of the rollable projection screen 1100.
As a specific example of the present application, the material of the elastic material layer 130 may be a film material having flexibility such as a polyurethane film, a polyethylene film, a polypropylene film, a polyamide film, a polypropylene film, a polystyrene film, a styrene film, a silicone film, a TPU film, a polyvinyl chloride film, a chloroprene rubber film, an ethylene-propylene rubber film, a plasticized polyolefin film, a chlorosulfonated polyethylene film, a chlorinated polyethylene film, a butylene rubber film, a thermoplastic synthetic rubber film, a epichlorohydrin rubber film, or the like.
In the embodiment of the present application, the raw material for manufacturing the elastic material layer 130 is more, and not limited to a certain number of raw materials, and in the actual use process, some raw materials with a more economical price may be selected as much as possible to control the manufacturing cost of the whole rollable projection screen 1100.
As a specific example of the present application, fig. 16 is a schematic hanging diagram of a rollable projection screen according to an embodiment of the present application. Windable projection screen 1100 includes windable web 110 and reinforcing structures 120 disposed on opposite sides of the image display surface of web 110, windable shaft 150 and weight bar 160 being disposed in windable axis direction x and located at opposite edges of web 110, as shown in fig. 16, windable shaft 150 being located at a position where web 110 is farthest from projector 1200, and weight bar 160 being located at a position where web 110 is closest to projector 1200. The winding shaft 150 is used for manually or electrically winding and unwinding the film 110, and can also be used as a hanger for mounting the foldable projection screen 1100; the weight bar 160 itself also has a certain bending strength, which further promotes the flatness of the rollable projection screen 1100 after installation.
Further, it should be noted that the foldable projection screen 1100 according to the embodiment of the present application can also be directly rolled along one side of the foldable film 110 without the winding shaft 150, but when the foldable projection screen 1100 is installed, the winding shaft 150 needs to be installed on one side of the film 110, and the winding shaft is used as a hanging device during installation, so as to reduce the installation difficulty of the foldable projection screen 1100 and the dependence on the flatness of the wall surface 200; similarly, the weight bar 160 may not be installed when the rollable projection screen 1100 is rolled, and the weight bar 160 may be installed on the other side of the membrane 110 when the rollable projection screen 1100 is to be installed on the wall surface 200, so that the rollable projection screen 1100 may be further flattened due to the weight and size of the weight bar 160 being larger than those of the reinforcing structure 120.
The winding shaft 150 may be circular as a winding core to wind the rollable projection screen 1100 into a cylindrical shape; or rectangular, the rollable projection screen 1100 may be clamped to the take-up reel 150 and the hook may be used to hang the rollable projection screen 1100 to the wall surface 200. Of course, the take-up reel 150 may have other shapes, and the same function is considered to fall within the scope of the present application.
The weight bar 160 may be circular, square, or other shapes, and the diaphragm 110 may be connected to the weight bar 160 by clamping, adhering, or nailing; the installation flatness of the rollable projection screen 1100 can be improved by adjusting the weight and size of the weight lever 160 to meet the viewing flatness requirement.
As a specific example of the present application, fig. 17 is a schematic view of a foldable projection screen as a lifting curtain according to an embodiment of the present application, and fig. 18 is a schematic view of a lifting mechanism of the foldable projection screen according to the embodiment of the present application. The rollable projection screen 1100 comprises a rolling shaft 150 and a lifting mechanism 180, in addition to a rollable membrane 110 and a plurality of reinforcing structures 120 arranged on the opposite side of the imaging display surface of the membrane 110; the winding shaft 150 is arranged in the winding axis direction x and is positioned at the edge of the membrane 110; the lifting structure 180 is disposed on a side of the diaphragm 110 adjacent to the reinforcing structure 120. The winding shaft 150 is used for winding and unwinding the rollable projection screen 1100 and providing unwinding resistance; the lifting mechanism 180 is used to support the unrolled and rollable projection screen 1100.
As shown in fig. 17 and 18, when viewing is not needed, the foldable projection screen 1100 is wound into the box 300 through the winding shaft 150, and when viewing is needed, the foldable projection screen 1100 is lifted from the box 300 by the supporting force of the lifting mechanism 180, so that viewing is achieved. In addition, the projector 1200 can be built in the box body 300, and the situation that the projector 1200 is moved to influence the view can be avoided. As can be seen from fig. 18, the lifting mechanism 180 mainly provides the support force for the rollable projection screen 1100 in the direction perpendicular to the rolling axis y, but the support force for the lifting mechanism 180 in the rolling axis x direction is very small, and the lifting screen can effectively solve the problem of the uneven lifting screen in the prior art by combining with the reinforcing structure 120. As shown in fig. 17, the lifting curtain may also be used without the box 300, and only the winding shaft 150 is wrapped in a box, so as to facilitate the storage and movement of the screen, so that the rollable projection screen 1100 can be placed in various places for use, thereby greatly expanding the application scenarios of the rollable projection screen 1100. Similarly, the retractable projection screen 1100 of the present application can also be applied to floor screens, electric screens, cradle screens, and other application scenarios, and can effectively solve the problem of unevenness in these retractable projection screens 1100 application scenarios.
For further explanation, the lifting mechanism 180 may be a crank type, a column type, or a scissor type, although other types of lifting mechanisms 180 may be used in the retractable projection screen 1100 of the present application, which is not necessarily an example. The control mode of the elevating mechanism 180 of the present application may be manual control or electric control.
In summary, in the embodiment of the present application, the film 110 may be a common projection screen film such as a white plastic screen, a metal screen, a glass bead screen, or the like, or an optical screen film such as a fresnel optical screen, a linear grating screen, a photon screen, or the like, and whether the film is a common projection screen film or an optical screen, the film functions to image the image light T emitted by the projector 1200, and whether the projection screens are a functional structure layer (e.g., a diffuse reflection functional layer of a white plastic screen, a metal directional reflection layer of a metal screen, or the like), or a multi-layer functional structure layer (e.g., a diffusion layer, a color layer, a fresnel lens layer, a reflection layer, a light absorption layer, a grating structure layer, or the like) and the projection screens may also have a problem of arching warpage after being rolled and unfolded, so that the arching warpage problem can be solved by applying the scheme of the present application, and the viewing requirement of the projected image can be met, and thus the projection screen belongs to the protection scope of the rollable projection screen 1100 of the scheme of the present application.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A rollable projection screen having a rolling axis direction, the rollable projection screen comprising:
the film comprises an imaging display surface and can be rolled; and
the reinforced component is pasted and set up on the contralateral surface of the formation of image display surface of diaphragm, the reinforced component includes at least one reinforced structure, reinforced structure is elongated structure, reinforced structure's extending direction with rolling axis direction is unanimous.
2. The rollable projection screen of claim 1, wherein the reinforcement assembly includes at least two reinforcement structures, the reinforcement structures being spaced side-by-side.
3. The rollable projection screen of claim 1 or 2, wherein the cross-sectional shape of the reinforcing structure in a direction perpendicular to the rolling axis is triangular, arcuate, rectangular, trapezoidal, "T" or "I".
4. The rollable projection screen of claim 3, wherein the reinforcing structure is a hollow structure.
5. A rollable projection screen according to claim 1 or 2, wherein the reinforcement structure has a length in the direction of the rolling axis which is equal to or greater than 90% of the length of the membrane.
6. The rollable projection screen of claim 1 or 2, further comprising a take-up spool and a weight bar, both disposed in the take-up axis direction at opposite edges of the membrane.
7. The rollable projection screen of claim 1 or 2, further comprising a take-up spool and a lifting mechanism; the winding shaft is arranged in the winding axis direction and is positioned at the edge of the membrane; the lifting mechanism is arranged on one side, close to the reinforcing structure, of the membrane.
8. A rollable projection screen according to claim 1, further comprising a layer of resilient material disposed on a side of the reinforcement member remote from the membrane.
9. The rollable projection screen of claim 8, wherein the elastomeric layer is formed from at least one of a polyurethane film, a polyethylene film, a polypropylene film, a polyamide film, a polypropylene film, a polystyrene film, a styrene film, a silicone film.
10. A projection system comprising a rollable projection screen according to any one of claims 1 to 9 and a projector for projecting image light onto the rollable projection screen.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211149232.4A CN115236931A (en) | 2022-09-21 | 2022-09-21 | Rollable projection screen and projection system |
| CN202321294993.9U CN220154788U (en) | 2022-09-21 | 2023-05-25 | Supporting structure for display screen |
| CN202310600602.XA CN117850149A (en) | 2022-09-21 | 2023-05-25 | Display screen |
| PCT/CN2023/113054 WO2024060883A1 (en) | 2022-09-21 | 2023-08-15 | Supporting structure for display screen, and display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211149232.4A CN115236931A (en) | 2022-09-21 | 2022-09-21 | Rollable projection screen and projection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115236931A true CN115236931A (en) | 2022-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211149232.4A Pending CN115236931A (en) | 2022-09-21 | 2022-09-21 | Rollable projection screen and projection system |
| CN202310600602.XA Pending CN117850149A (en) | 2022-09-21 | 2023-05-25 | Display screen |
| CN202321294993.9U Active CN220154788U (en) | 2022-09-21 | 2023-05-25 | Supporting structure for display screen |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
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| CN202310600602.XA Pending CN117850149A (en) | 2022-09-21 | 2023-05-25 | Display screen |
| CN202321294993.9U Active CN220154788U (en) | 2022-09-21 | 2023-05-25 | Supporting structure for display screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024060883A1 (en) * | 2022-09-21 | 2024-03-28 | 成都菲斯特科技有限公司 | Supporting structure for display screen, and display screen |
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|---|---|
| CN117850149A (en) | 2024-04-09 |
| CN220154788U (en) | 2023-12-08 |
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