CN116088258A - Projection screen - Google Patents

Abstract

The application discloses projection screen belongs to the projection equipment field. The projection screen includes: a projection curtain, a support structure layer, and a spool assembly; one end of the projection curtain and one end of the supporting structure layer are connected with the winding drum assembly, and the supporting structure layer is positioned on the back surface of the projection curtain; the supporting structure layer comprises a flexible substrate layer and a plurality of hard supporting bars positioned on the flexible substrate layer, the supporting bars extend along a first direction, at least a part of orthographic projection of the supporting bars on the projection curtain is positioned in a light receiving area, and the first direction is a direction parallel to the axis of the winding drum assembly. Under such structure, just can support projection curtain through these a plurality of support bars, reduce the possibility that projection curtain edge curls, and this bearing structure layer has realized the bearing structure layer of soft or hard combination with flexible stratum basale, also can not apply great pressure to projection curtain when curling, solved the problem that projection screen damaged easily among the correlation technique, promoted the protection effect to projection screen.

Description

Projection screen

Technical Field

The present application relates to the field of projection devices, and in particular, to a projection screen.

Background

A projection screen is a device for receiving an image projected by a projector.

The utility model provides a projection screen includes curtain, rolling up curtain and reel, the back and the rolling up curtain laminating of curtain, and curtain and rolling up the one end and the reel of curtain are connected to accomodate on the reel, this rolling up curtain includes a plurality of metal rolling up curtain pieces, and this a plurality of metal rolling up curtain pieces end to end can be used for supporting the curtain, in order to avoid the edge of curtain to curl.

However, when the projection screen is curled, the roller shutter easily presses the curtain, resulting in easy damage of the projection screen.

Disclosure of Invention

The embodiment of the application provides a projection screen. The technical scheme is as follows:

according to an aspect of embodiments of the present application, there is provided a projection screen including: a projection curtain, a support structure layer, and a spool assembly;

one end of the projection curtain and one end of the supporting structure layer are connected with the winding drum assembly, the supporting structure layer is positioned on the back surface of the projection curtain, and the front surface of the projection curtain is provided with a light receiving area;

the supporting structure layer comprises a flexible substrate layer and a plurality of hard supporting bars located on one face, far away from the projection curtain, of the flexible substrate layer, the supporting bars extend along a first direction, at least one part of orthographic projection of the supporting bars on the projection curtain is located in the light receiving area, and the first direction is a direction parallel to the axis of the winding drum assembly.

Optionally, the support structure layer further includes a first magnetic structure located on the flexible substrate layer, the projection curtain includes a projection curtain layer and a second magnetic structure located on a surface of the projection curtain layer facing the support structure layer, and the first magnetic structure and the second magnetic structure are mutually adsorbed.

Optionally, the first magnetic structure comprises a plurality of magnetic strips;

the magnetic strips and the support strips are arranged into a plurality of strip groups on the flexible substrate layer, and each strip group comprises at least one magnetic strip and at least one support strip.

Optionally, each of the bar groups includes one of the magnetic bars and one of the support bars.

Optionally, the material of the supporting strips comprises a magnetic material, and the plurality of supporting strips are multiplexed into the first magnetic structure;

alternatively, the first magnetic structure is a magnetic layer, and the magnetic layer is located on the flexible substrate layer.

Optionally, the support strip is bonded to the flexible substrate layer;

alternatively, the support structure layer further comprises a plurality of fixing structures on the flexible substrate layer, and the support strips are positioned on the fixing structures;

alternatively, the support structure layer further comprises a cover layer, the plurality of support bars being located between the cover layer and the flexible substrate layer.

Optionally, the support structure layer further comprises a mesh-like wire structure;

the flexible substrate layer is provided with a reticular groove, and the reticular wire structure is positioned in the reticular groove on the flexible substrate layer.

Optionally, the flexible substrate layer includes a substrate layer, a reinforcing layer overlying the substrate layer, and an elastic layer overlying the reinforcing layer.

Optionally, the material of the support bar includes at least one of carbon fiber, glass fiber, aluminum alloy, polycarbonate, and polyethylene terephthalate.

Optionally, the roller assembly includes a first roller, and one end of the projection curtain and one end of the support structure layer are connected to the first roller;

alternatively, the roll assembly includes a second roll and a third roll, one end of the projection screen is connected to the second roll, and one end of the support structure layer is connected to the third roll.

According to another aspect of embodiments of the present application, there is provided a projection apparatus including a projector and any one of the projection screens described above.

The beneficial effects that technical scheme that this application embodiment provided include at least:

the utility model provides a projection screen including projection curtain, bearing structure layer and reel subassembly, wherein the bearing structure layer includes flexible stratum basale and is located a plurality of stereoplasm support bars on the flexible stratum basale, and the orthographic projection of support bar on the projection curtain is connected with two opposite limits of projection curtain in first direction, just so can support the projection curtain through these a plurality of support bars, reduce the possibility that projection curtain edge curls, and this bearing structure layer has realized the bearing structure layer of soft or hard combination with the flexible stratum basale, also can not exert great pressure to the projection curtain when curling, the problem that the projection screen is damaged easily in the correlation technique has been solved, the protection effect to the projection screen has been promoted.

In addition, the projection screen substrate is a flexible substrate layer, the length direction of the hard support bar is parallel to the axis of the winding drum and is positioned on one surface of the flexible substrate layer away from the projection screen, and then the hard support bar does not influence the curling of the projection screen when the projection screen is curled, so that the curling performance of the projection screen is improved, the curling radius of the projection screen is reduced, and the miniaturization of the projection screen is facilitated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a projection screen;

FIG. 2 is a schematic view of another projection curtain;

FIG. 3 is a schematic view of a projection screen according to an embodiment of the present disclosure;

FIG. 4 is a right side view of the projection screen of FIG. 3;

FIG. 5 is a schematic view of another projection screen according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of another projection screen according to an embodiment of the present application;

FIG. 7 is a schematic view of another projection screen according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of another projection screen according to an embodiment of the present application;

FIG. 9 is a schematic view of another projection screen according to an embodiment of the present application;

FIG. 10 is a schematic view of another projection screen according to an embodiment of the present disclosure;

FIG. 11 is a schematic view of another projection screen according to an embodiment of the present disclosure;

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

FIG. 13 is a schematic view of a support structure layer in a projection screen according to an embodiment of the present application;

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

fig. 15 is a schematic structural diagram of a projection apparatus according to an embodiment of the present application.

Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

A projection screen is a device for receiving an image projected by a projector. In order to improve usability of a projection screen, one of the projection screens is currently a projection screen that can be wound into a roll for storage. As shown in fig. 1, fig. 1 is a schematic view of a projection screen, where the projection screen includes a curtain 13 having a beam 11, a drum 12 and flexibility, the beam 11 is disposed at an upper edge of the curtain 13, the drum 12 is disposed at a lower edge of the curtain 13, the drum 12 and the beam 11 can tension the curtain 13, and tension forces in various directions of a central area 131 of the curtain 13 are substantially equal, so that the flatness of the central area 131 is higher, but stress of the off-center area of the curtain 131 in different directions is not equal, especially, there is no external force in left and right edge areas 132, resulting in unbalance in left and right hands of the edge areas 132, which may cause problems such as inward shrinkage, curling and wrinkling of the curtain, and affect the display effect of the projection curtain.

In order to solve the problem of uneven edges of the curtain, a projection screen may be shown in fig. 2, fig. 2 is a schematic structural diagram of another projection curtain (fig. 2 may be a side view of the projection curtain, an observation view angle may be parallel to a surface of the curtain), the projection curtain includes a curtain 21, a roller shutter 22 and a drum 23, a back surface of the curtain 21 (the curtain may include opposite front and back surfaces, the front surface is a surface bearing an image frame) is attached to the roller shutter 22, one end of the curtain 21 and one end of the roller shutter 22 are connected with the drum 23 so as to be conveniently stored on the drum 23, the roller shutter 22 includes a plurality of metal roller shutter sheets 221, and the metal roller shutter sheets 221 are connected end to end and may be used for supporting the curtain 21 so as to avoid edge curling of the curtain 21.

However, when the projection screen is curled (for example, when the projection screen is curled and stored in the roll 23), the metal rolling sheet 221 applies a large pressure to the curtain 21 due to the high hardness of the metal rolling sheet 221, which may cause damage to the curtain, and the rolling screen 22 formed by the plurality of metal rolling sheets 221 has poor bending performance and a large bending radius, so that the roll 23 has a large size, which is disadvantageous to miniaturization of the projection screen.

Embodiments of the present application provide a projection screen that may solve some of the problems in the related art described above.

Fig. 3 is a schematic structural diagram of a projection screen according to an embodiment of the present application, fig. 4 is a right side view of the projection screen shown in fig. 3, please refer to fig. 3 and 4, and the projection screen 30 includes: projection curtain 31, support structure layer 32, and reel assembly 33.

One end of the projection curtain 31 and one end of the support structure layer 32 are connected with the reel assembly 33, and the support structure layer 32 is located on the back surface of the projection curtain 31, and the front surface of the projection curtain 31 is provided with a light receiving area q1.

The support structure layer 32 includes a flexible substrate layer 321 and a plurality of rigid support bars 322 located on a side of the flexible substrate layer 321 away from the projection screen 31, where the support bars 322 extend along a first direction f1, and at least a portion of an orthographic projection of the support bars 322 on the projection screen 31 is located within a light receiving area q1 (fig. 3 shows a case where a portion of an orthographic projection of the support bars 322 on the projection screen 31 is located within the light receiving area q1 and another portion is located outside the light receiving area q1, but is not limited thereto), and the first direction f1 is a direction parallel to an axis z1 of the spool assembly 33.

The projection curtain 31 may include an optical film, and the light receiving region q1 may be a region where the optical film is located.

To sum up, this application embodiment provides a projection screen including projection curtain, bearing structure layer and reel subassembly, wherein the bearing structure layer includes flexible stratum basale and is located the support bar of a plurality of stereoplasms on the flexible stratum basale, and the orthographic projection of support bar on projection curtain is connected with two opposite limits of projection curtain in first direction, so just can support projection curtain through these a plurality of support bars, reduce the possibility that projection curtain edge curls, and this bearing structure layer has realized the bearing structure layer that soft or hard combines with flexible stratum basale, also can not exert great pressure to projection curtain when curling, the problem that projection screen is damaged easily has been solved among the correlation technique, the protection effect to projection screen has been promoted.

In addition, the projection screen substrate is a flexible substrate layer, the length direction of the hard support bar is parallel to the axis of the winding drum and is positioned on one surface of the flexible substrate layer away from the projection screen, and then the hard support bar does not influence the curling of the projection screen when the projection screen is curled, so that the curling performance of the projection screen is improved, the curling radius of the projection screen is reduced, and the miniaturization of the projection screen is facilitated.

It should be noted that, among the above-mentioned plural support bars, there may be a space between adjacent support bars, and the space may be determined by a test, so that the projection curtain may be ensured to be flat by using as few support bars as possible.

Fig. 5 is a schematic view of another projection screen according to an embodiment of the present application, which is modified based on the projection screen shown in fig. 3. The support structure layer 32 further includes a first magnetic structure 323 disposed on the flexible substrate layer 321, the projection curtain 31 includes a projection curtain layer 311, and a second magnetic structure 312 disposed on a surface of the projection curtain layer 311 facing the support structure layer 32, where the first magnetic structure 323 and the second magnetic structure 312 are attracted to each other. The first magnetic structure 323 and the second magnetic structure 312 may attract each other to achieve the mutual fitting of the projection screen 31 and the support structure layer 32. The first magnetic structure 323 can be located at one side of the flexible substrate layer 321 away from the projection curtain 31, so as to reduce the possibility that the first magnetic structure 323 damages the projection curtain 31, and improve the protection effect on the projection curtain 31.

Fig. 5 shows a structure in which the first magnetic structure 323 is a magnetic layer, and the magnetic layer is disposed on the flexible substrate layer 321, and the magnetic layer as the first magnetic structure 323 may attract to the second magnetic structure 312 in the projection screen 31, so that the projection screen 31 and the support structure layer 32 are attached to each other. Wherein, the magnetic layer as the first magnetic structure 323 can be located the one side that the projection curtain 31 was kept away from to flexible stratum basale 321, so under the structure, flexible stratum basale 321 can be as the buffer layer to avoid first magnetic structure 323 direct and projection curtain 31 contact, reduced the possibility that first magnetic structure 323 harm projection curtain 31 at the in-process of curling, promoted the protection effect to projection curtain 31.

In an exemplary embodiment, the magnetic layer may be disposed on the flexible substrate layer 321 by spraying, pasting, printing, doping, or the like, or a magnetic material may be added to the flexible substrate layer 321 so that the magnetic layer and the flexible substrate layer 321 are mixed into one layer, which is not limited in the embodiment of the present application.

The above-mentioned manner of disposing the first magnetic structure is provided in fig. 5, and the embodiment of the present application may also dispose the first magnetic structure in other manners. As shown in fig. 6, fig. 6 is a schematic structural diagram of another projection screen according to an embodiment of the present application, where the first magnetic structure 323 includes a plurality of magnetic strips t and a plurality of support strips 322 are arranged in a plurality of strip groups g on the flexible substrate layer, and each strip group g includes at least one magnetic strip t and at least one support strip 322. Under this kind of structure, magnetic stripe t also can be made by the material of stereoplasm, and then magnetic stripe t not only can be used for adsorbing each other with the second magnetic structure in the projection curtain, can also be used for supporting the edge of projection curtain with support bar 322 jointly to promote the roughness at projection curtain edge.

Fig. 6 shows a structure in which one bar group g includes one magnetic bar t and one supporting bar 322, but other numbers of magnetic bars t and supporting bars 322 may be included in one bar group g, and the numbers of magnetic bars t and supporting bars 322 in the bar group g may be the same, or may be different, and the numbers of magnetic bars t and supporting bars 322 in different bar groups g may be the same, or may be different. Exemplary, as shown in fig. 7, fig. 7 is a schematic structural view of another projection screen provided in the embodiment of the present application, where one bar group g may include two magnetic bars t and two support bars 322, or, as shown in fig. 8, fig. 8 is a schematic structural view of another projection screen provided in the embodiment of the present application, where one bar group g may include two magnetic bars t and one support bar 322, or, as shown in fig. 9, fig. 9 is a schematic structural view of another projection screen provided in the embodiment of the present application, where one bar group g may include two magnetic bars t and one support bar 322, and another bar group g may include two magnetic bars t and two support bars 322, and this embodiment of the present application is not limited.

Fig. 10 is a schematic structural view of another projection screen according to an embodiment of the present application. Wherein the material of support bars 322 comprises a magnetic material, a plurality of support bars 322 are multiplexed into first magnetic structure 323. Under this kind of structure, support bar 322 multiplexing is first magnetic structure 323, and then this first magnetic structure 323 can be together spread over on the flexible stratum basale 321 with support bar 322, has promoted the absorptive stability between this bearing structure layer 32 and the projection curtain 31, can avoid projection curtain 31 and bearing structure layer 32 to break away from when the projection screen curls or expands on the one hand, on the other hand can promote bearing structure layer 32 to the supporting effect of projection screen 31, promotes the roughness at the edge of projection curtain 31, promotes the display effect of projection screen.

In addition, the first magnetic structure may be combined with the flexible substrate layer, for example, magnetic powder may be added to the flexible substrate layer, and the magnetic powder may be disposed in the flexible substrate layer by spraying, printing, doping, pasting, or the like. The added ferromagnetism is not limited to the front, the back or the middle of the synthetic cloth, and can be adsorbed on the magnet as long as the magnetism is added.

It should be noted that, in one case, one of the first magnetic structure in the supporting structure layer and the second magnetic structure in the projection curtain may be a material having magnetism, such as a magnet, a magnetic ore, or other magnetized metal, and the other magnetic structure may be a material capable of being attracted by the material having magnetism, such as iron, nickel, cobalt, or the like, so that the first magnetic structure in the supporting structure layer and the second magnetic structure in the projection curtain can achieve the function of mutual attraction. Alternatively, the first magnetic structure in the support structure layer and the second magnetic structure in the projection screen may be materials that each include magnetism, but the first magnetic structure in the support structure layer and the second magnetic structure in the projection screen are opposite in magnetism, so that the first magnetic structure in the support structure layer and the second magnetic structure in the projection screen can also achieve the function of mutual attraction.

When the first magnetic structure located in the supporting structure layer and the second magnetic structure located in the projection curtain are attracted to each other, the projection curtain can be unfolded, and the supporting structure layer has an adsorption force on the projection screen, so that the inside and the edge of the projection curtain can be smooth.

In addition, the first magnetic structure may extend over the entire support structure layer or may be located only in a partial region of the support structure layer, and illustratively, the first magnetic structure may be located only at two edges of the support structure layer in the lateral direction to ensure a supporting effect for the edges of the projection curtain. Alternatively, the first magnetic structure may have different magnetic properties in different regions, and exemplary, the support structure layer may have stronger magnetic properties at two edges in the lateral direction than at other regions, so as to further enhance the support effect on the edges of the projection curtain.

In the projection screen provided by the embodiment of the application, the supporting strips can be arranged on the flexible substrate layer in various modes, and in one mode, the supporting strips are bonded with the flexible substrate layer.

The material of the flexible substrate layer may include a synthetic cloth composed of oxford, and since the surface of the oxford is difficult to directly adhere, the synthetic cloth may include oxford and a coating layer on the oxford, the coating layer may be disposed on the oxford by coating or spraying, and then may be adhered to the flexible substrate layer by an adhesive.

In another embodiment, please refer to fig. 11, fig. 11 is a schematic structural diagram of another projection screen according to an embodiment of the present application. Wherein the support structure layer 32 further comprises a plurality of fixing structures d on the flexible substrate layer 321, and the supporting bars 322 are positioned on the fixing structures d. The fixing structure d may be a net bag, or the fixing structure d may be a storage bag, or the fixing structure d may be other structures, which is not limited in this embodiment of the present application.

In another embodiment, please refer to fig. 12, fig. 12 is a schematic diagram illustrating a structure of another projection screen according to an embodiment of the present application. Wherein support structure layer 32 further includes a cover layer 324, and a plurality of support bars 322 are positioned between cover layer 324 and flexible substrate layer 321. The cover layer 324 may also be constructed of a flexible material, such as oxford, and the like, which is not limited by the embodiments of the present application.

In the embodiment of the application, the material of the flexible substrate layer may include synthetic fabric, and the synthetic step may be to adopt polyester yarn raw materials which are not easy to deform and have high tensile strength, and the elastic encrypted oxford fabric is formed by transverse and longitudinal weaving, which is the elastic oxford fabric with high strength.

As shown in fig. 13, fig. 13 is a schematic structural diagram of a support structure layer in a projection screen according to an embodiment of the present application (fig. 13 shows a side of the support structure layer where no support bar is provided), and the support structure layer 32 further includes a mesh-shaped wire structure 325. The flexible substrate layer 321 has a mesh-like groove c in which the mesh-like wire structure 325 is located on the flexible substrate layer 321.

Under this structure, the supporting structure layer can be compensated for the lateral (which may refer to the direction parallel to the axis of the spool assembly) tension force by the mesh structure formed by the mesh grooves c and the mesh wire structures 325, so as to improve the stretching resistance of the supporting structure layer in the lateral direction, and further improve the firmness and flatness of the supporting structure layer.

In one exemplary embodiment, the flexible base layer may include a substrate layer, a reinforcing layer overlying the substrate layer, and an elastic layer overlying the reinforcing layer. The substrate layer, the reinforcing layer and the elastic layer can be oxford made by different processes so that the oxford has different functions, for example, the reinforcing layer can be oxford with higher strength, the elastic layer can be oxford with better elasticity, the reinforcing layer can compensate the longitudinal stretching (the longitudinal direction can be perpendicular to the axial direction of the winding drum assembly) of the flexible substrate layer, the stretching resistance of the flexible substrate layer in the longitudinal direction is improved, and the firmness and the flatness of the supporting structure layer can be improved.

The flexible substrate layer provided by the embodiment has higher elasticity and strength in the transverse direction and the longitudinal direction, so that the flexible substrate layer can bear deformation forces in all directions.

It should be noted that, because the surface of oxford is difficult to directly adhere, the surface of the substrate layer, the reinforcing layer and the elastic layer can be respectively provided with a coating, and the substrate layer, the reinforcing layer and the elastic layer are bonded by an adhesive, so as to avoid separation of the substrate layer, the reinforcing layer and the elastic layer. Under the structure, ferromagnetic materials can be added into the substrate layer, the elastic layer and the reinforcing layer or the terylene raw material of oxford, so that the first magnetic structure is combined and arranged in the flexible substrate layer.

In one exemplary embodiment, the material of the support bar includes at least one of various hard materials, such as carbon fiber, glass fiber, aluminum alloy, polycarbonate (PC), and polyethylene terephthalate (PET).

In the projection screen that this application embodiment provided, the support bar of stereoplasm sets up on flexible stratum basale, has so provided a bearing structure layer that soft and hard combines, and this bearing structure layer can be when projection screen expands, supports the projection curtain by the support bar of stereoplasm to promote the roughness of projection curtain, especially the planarization at two horizontal edges of projection screen, with the display effect of the image picture that promotes this projection screen to bear. When the projection screen is stored, the flexible substrate layer can have good bending property, and the hard supporting bar is parallel to the axis of the winding drum assembly, so that the hard supporting bar can be curled along with the flexible substrate layer and the projection screen, and can be wound on the winding drum assembly, and the projection screen can not be applied with larger pressure, so that the projection screen is protected, and the service life of the projection screen is prolonged.

In the projection screen provided in the above embodiment, the roller assembly 33 includes a first roller, and one end of the projection screen 31 and one end of the support structure layer 32 are connected to the first roller. With this structure, the projection curtain 31 and the support structure layer 32 can be curled and stored in the same first reel. The structure has the advantages of simple structure, small volume and the like.

As shown in fig. 14, fig. 14 is a schematic structural diagram of another projection screen provided in an embodiment of the present application, where the roller assembly 33 includes a second roller 332 and a third roller 333 (the axis of the second roller 332 may be parallel to the axis of the third roller 333, and the roller assembly 33 referred to in the foregoing embodiment may refer to the axis of the second roller 332 or the axis of the third roller 333), one end 31 of the projection screen is connected to the second roller 332, and one end of the support structure layer 32 is connected to the third roller 333. Under this kind of structure, projection curtain 31 and bearing structure layer 32 can curl respectively and accomodate to two different reels in, and this kind of structure can avoid after curling, and bearing structure layer 32 produces the damage to projection curtain 31, has promoted the guard action to projection curtain 31.

In an exemplary embodiment, the projection screen provided in the embodiments of the present application may further include a beam, which may be located at the other end of the projection screen opposite the reel assembly, and may be used to support the end of the projection screen.

In addition, the projection screen provided by the embodiment of the application may be a pull-down projection screen, or may be a pull-up projection screen, when the projection screen is a pull-down projection screen, after the projection screen is set at a preset position, a user may pull out the projection screen and the supporting structure layer from the reel assembly from top to bottom. When the projection screen is a pull-up projection screen, after the projection screen is arranged at a preset position, a user can pull the projection screen and the supporting structure layer out of the reel assembly from bottom to top, and in this case, the pulled projection screen and the supporting structure layer can be fixed at the preset position (such as a hook on a wall surface, or the projection screen and the supporting structure layer are fixed through a bracket).

To sum up, this application embodiment provides a projection screen including projection curtain, bearing structure layer and reel subassembly, wherein the bearing structure layer includes flexible stratum basale and is located the support bar of a plurality of stereoplasms on the flexible stratum basale, and the orthographic projection of support bar on projection curtain is connected with two opposite limits of projection curtain in first direction, so just can support projection curtain through these a plurality of support bars, reduce the possibility that projection curtain edge curls, and this bearing structure layer has realized the bearing structure layer that soft or hard combines with flexible stratum basale, also can not exert great pressure to projection curtain when curling, the problem that projection screen is damaged easily has been solved among the correlation technique, the protection effect to projection screen has been promoted.

In addition, the projection screen substrate is a flexible substrate layer, the length direction of the hard support bar is parallel to the axis of the winding drum and is positioned on one surface of the flexible substrate layer away from the projection screen, and then the hard support bar does not influence the curling of the projection screen when the projection screen is curled, so that the curling performance of the projection screen is improved, the curling radius of the projection screen is reduced, and the miniaturization of the projection screen is facilitated.

As shown in fig. 15, fig. 15 is a schematic structural view of a projection apparatus provided in an embodiment of the present application, which includes a projector 40 and any one of the projection screens 30 provided in the above-described embodiments.

When the projection device is applied, the projection screen 31 and the support structure layer 32 curled and accommodated in the reel assembly 33 in the projection screen 30 can be pulled out from the reel assembly 33 and fixed, and then the projector 41 can be started, and the projector 41 can project an image frame on the projection screen 31. Because this bearing structure layer 32 can promote the roughness of projection curtain 31, especially promotes the roughness at the edge of projection curtain 31, reduces the possibility that the edge of projection curtain 31 takes place problems such as inwards shrink, turn-up and fold, and then the image picture can appear on the higher projection curtain of roughness, has promoted the display effect of image picture.

The projection screen provided by the embodiment is applied to the projection device, and the hard supporting strips are arranged on the flexible substrate layer, so that the soft and hard combined supporting structure layer is provided, and the supporting structure layer can support the projection curtain by the hard supporting strips when the projection screen is unfolded, so that the flatness of the projection curtain, particularly the flatness of two transverse edges of the projection screen, is improved, and the display effect of an image picture borne by the projection screen is improved. When the projection screen is stored, the flexible substrate layer can have good bending property, and the hard supporting bar is parallel to the axis of the winding drum assembly, so that the hard supporting bar can be curled along with the flexible substrate layer and the projection screen, and can be wound on the winding drum assembly, and the projection screen can not be applied with larger pressure, so that the projection screen is protected, and the service life of the projection screen is prolonged. The use cost of the projection device is reduced.

In an exemplary embodiment, projector 40 may be an ultra-short-focus projector, which may reduce the distance between projector 40 and projection screen 30, facilitating miniaturization of the projection device.

To sum up, this embodiment of the application provides a projection equipment, this projection screen of projection equipment includes the projection curtain, bearing structure layer and reel subassembly, wherein bearing structure layer includes flexible stratum basale and a plurality of stereoplasm support bars that are located on the flexible stratum basale, and the orthographic projection of support bar on the projection curtain is connected with two opposite limits of projection curtain in first direction, so just can support the projection curtain through these a plurality of support bars, reduce the possibility that projection curtain edge curls, and this bearing structure layer has realized the bearing structure layer of soft or hard combination with the flexible stratum basale, also can not exert great pressure to the projection curtain when curling, the problem that the projection screen is easy damaged has been solved among the correlation technique, the protection effect to the projection screen has been promoted.

In addition, the projection screen substrate is a flexible substrate layer, the length direction of the hard support bar is parallel to the axis of the winding drum and is positioned on one surface of the flexible substrate layer away from the projection screen, and then the hard support bar does not influence the curling of the projection screen when the projection screen is curled, so that the curling performance of the projection screen is improved, the curling radius of the projection screen is reduced, and the miniaturization of the projection screen is facilitated.

The term "at least one of a and B" in this application is merely an association relationship describing an association object, and means that three relationships may exist, for example, at least one of a and B may mean: a exists alone, A and B exist together, and B exists alone. Similarly, "at least one of A, B and C" means that there may be seven relationships, which may be represented: there are seven cases where a alone, B alone, C alone, a and B together, a and C together, C and B together, A, B and C together. Similarly, "at least one of A, B, C and D" means that there may be fifteen relationships, which may be represented: there are fifteen cases where a alone, B alone, C alone, D alone, a and B together, a and C together, a and D together, C and B together, D and B together, C and D together, A, B and C together, A, B and D together, A, C and D together, B, C and D together, A, B, C and D together.

It is noted that in the drawings, the size of layers and regions may be exaggerated for clarity of illustration. Moreover, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or intervening layers may be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may be present. In addition, it will be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intervening layer or element may also be present. Like reference numerals refer to like elements throughout.

In this application, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined otherwise.

The foregoing description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, since it is intended that all modifications, equivalents, improvements, etc. that fall within the spirit and scope of the invention.

Claims (10)

1. A projection screen, the projection screen comprising: a projection curtain, a support structure layer, and a spool assembly;

one end of the projection curtain and one end of the supporting structure layer are connected with the winding drum assembly, the supporting structure layer is positioned on the back surface of the projection curtain, and the front surface of the projection curtain is provided with a light receiving area;

the supporting structure layer comprises a flexible substrate layer and a plurality of hard supporting bars located on one face, far away from the projection curtain, of the flexible substrate layer, the supporting bars extend along a first direction, at least one part of orthographic projection of the supporting bars on the projection curtain is located in the light receiving area, and the first direction is a direction parallel to the axis of the winding drum assembly.

2. The projection screen of claim 1, wherein the support structure layer further comprises a first magnetic structure on the flexible substrate layer, the projection screen comprising a projection screen layer and a second magnetic structure on a side of the projection screen layer facing the support structure layer, the first magnetic structure and the second magnetic structure being attracted to each other.

3. The projection screen of claim 2 wherein the first magnetic structure comprises a plurality of magnetic strips;

the magnetic strips and the support strips are arranged into a plurality of strip groups on the flexible substrate layer, and each strip group comprises at least one magnetic strip and at least one support strip.

4. A projection screen according to claim 3, wherein each of said bar sets comprises one of said magnetic bars and one of said support bars.

5. The projection screen of claim 2, wherein the material of the support strips comprises a magnetic material, the plurality of support strips being multiplexed into the first magnetic structure;

alternatively, the first magnetic structure is a magnetic layer, and the magnetic layer is located on the flexible substrate layer.

6. The projection screen of any one of claims 1 to 5 wherein the support strip is bonded to the flexible substrate layer;

alternatively, the support structure layer further comprises a plurality of fixing structures on the flexible substrate layer, and the support strips are positioned on the fixing structures;

alternatively, the support structure layer further comprises a cover layer, the plurality of support bars being located between the cover layer and the flexible substrate layer.

7. The projection screen of any one of claims 1 to 5 wherein the support structure layer further comprises a mesh-like wire structure;

the flexible substrate layer is provided with a reticular groove, and the reticular wire structure is positioned in the reticular groove on the flexible substrate layer.

8. The projection screen of any of claims 1-5 wherein the flexible substrate layer comprises a substrate layer, a stiffening layer overlying the substrate layer, and an elastic layer overlying the stiffening layer.

9. The projection screen of any one of claims 1-5, wherein the support bar material comprises at least one of carbon fiber, fiberglass, aluminum alloy, polycarbonate, and polyethylene terephthalate.

10. The projection screen of any one of claims 1 to 5, wherein the roller assembly comprises a first roller to which one end of the projection screen and one end of the support structure layer are both connected;

alternatively, the roll assembly includes a second roll and a third roll, one end of the projection screen is connected to the second roll, and one end of the support structure layer is connected to the third roll.

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