Projection curtain device and projection equipment

Abstract

The utility model relates to a projection curtain device and projection equipment. The projection curtain device comprises a curtain, a rolling assembly and a tensioning assembly. Wherein the curtain is provided with a first side part and a second side part which are arranged oppositely; the rolling assembly is connected with the first side part, and the rolling assembly is rotatably arranged, so that the curtain is rolled on the rolling assembly; the tensioning assembly comprises a containing part and a blocking part, the containing part is provided with a containing groove, the second side part is arranged in the containing groove, the blocking part is arranged in the containing groove, the blocking part is attached to the second side part and abuts against the inner wall of the containing groove, and the extending direction of the blocking part is the same as the extending direction of the second side part. According to the projection curtain device in the embodiment, the second side edge abuts against the inner wall of the containing groove of the containing part through the blocking part, so that the second side part is relatively flat, and the flatness of the curtain is ensured.

Description

Technical Field

[0001] The present application relates to the field of projection imaging technology, and in particular to a projection screen device and a projection equipment. Background Art

[0002] With the advancement of projection technology and the popularity of projection equipment, more and more people use projectors and projection screens to display images. When the projection screen is in the unfolded state, it is generally made flat to ensure the projection effect. The projection screen includes a reel and a screen. One side of the screen is connected to the reel, and the remaining part is wound around the reel. When in use, pull the active side of the screen to unfold the screen.

[0003] However, the movable end of the existing projection screen is easily deformed and wrinkled, and the wrinkles will extend to the middle position of the projection screen or even to the scroll, making the projection screen uneven and greatly reducing the projection effect. Utility Model Content

[0004] The embodiments of the present application provide a projection screen device and a projection equipment.

[0005] In a first aspect, the present application provides a projection screen device, which includes a screen, a rolling assembly and a tensioning assembly, wherein the screen has a first side portion and a second side portion, and the first side portion and the second side portion are respectively located at two ends of the screen; the rolling assembly is connected to the first side portion, and the screen has a rolled-up state and an unfolded state relative to the rolling assembly, and in the rolled-up state, the screen is wound around the outer periphery of the rolling assembly; the tensioning assembly includes a storage member and a barrier member, the storage member is provided with a accommodating groove, the second side portion is arranged in the accommodating groove, the barrier member is arranged in the accommodating groove, the barrier member is abutted against the second side portion and pressed against the inner wall of the accommodating groove, and the extension direction of the barrier member is the same as the extension direction of the second side portion.

[0006] Among them, in some optional embodiments, the tensioning assembly also includes a stretching piece arranged in the accommodating groove, the stretching piece is located in the accommodating groove and is closely connected to the second side portion, and the extension direction of the stretching piece is the same as the extension direction of the second side portion; the blocking piece is located between the notch of the accommodating groove and the stretching piece.

[0007] In some optional embodiments, the storage member is provided with a communication port, which is located at one end of the accommodating groove in its extension direction and is connected to the accommodating groove, and the communication port is used for allowing the barrier member to be inserted into the accommodating groove via the communication port.

[0008] Among them, in some optional embodiments, the storage piece includes a bottom wall and two side walls arranged relatively spaced apart, the bottom wall is connected between the two side walls, the bottom wall and the two side walls jointly define a receiving groove, and the two side walls away from the bottom wall define a notch of the receiving groove; the second side portion is passed through the notch and accommodated in the receiving groove.

[0009] Among them, in some optional embodiments, the side wall includes a main body and a limiting portion, the main body is connected between the limiting portion and the bottom wall, and the limiting portion of each side wall extends toward the other side wall relative to the main body; the limiting portions of the two side walls are spaced apart to define a notch, and the size of the notch is smaller than the size of the barrier, so that the barrier is limited in the accommodating groove, and the barrier can abut against the limiting portion.

[0010] In some optional embodiments, two sides of the barrier are respectively in contact with the two side walls, the second side portion is located between the barrier and at least one of the side walls, and the barrier presses the second side portion against at least one of the side walls.

[0011] In some optional embodiments, the winding assembly includes a reel, and the reel is provided with a mounting plane, and the mounting plane is arranged in contact with and fixedly connected to the first side portion.

[0012] Among them, in some optional embodiments, the outer peripheral wall of the reel is partially recessed and defines a mounting groove, and the mounting plane is the inner wall of the mounting groove; the curtain also includes a connecting portion connected to the edge of the first side portion, the connecting portion protrudes relative to the first side portion in a direction away from the second side portion, and the connecting portion is arranged in the mounting groove and fits the mounting plane; in the extension direction of the first side portion, the two ends of the connecting portion and the two ends of the first side portion correspond to each other one by one and are spaced apart; the winding assembly also includes a covering cover, which is embedded in the mounting groove and clamps the connecting portion together with the mounting plane, and the outer surface of the covering cover is flush with the outer peripheral wall of the reel.

[0013] Among them, in some optional embodiments, a mounting hole is provided on the mounting plane, a first through hole is provided on the connecting part, and a second through hole is provided on the cover; the winding assembly also includes a fixing part, which passes through the second through hole and the first through hole in sequence and is locked to the mounting hole to fix the connecting reel, the connecting part and the cover.

[0014] In a second aspect, the present application further provides a projection device, which includes the projection screen device and a projector as described above, and the projector is used for projecting toward the screen in an unfolded state.

[0015] The embodiment of the present application provides a projection screen device, which may include a screen, a winding assembly, and a tensioning assembly. In this embodiment, the screen has a first side portion and a second side portion that are arranged opposite to each other, wherein the first side portion and the second side portion are substantially in the same extension direction as the winding assembly, and the first side portion is connected to the winding assembly. The winding assembly has a rotation axis in its extension direction, and the winding assembly can rotate around the rotation axis so that the screen starts to be wound around the winding assembly from the first side portion. Therefore, when the screen is in a wound state, the screen is wound around the winding assembly and forms a multi-layer structure, the first side portion is attached to the outer periphery of the winding assembly and is located in the innermost layer, and the second side portion is located in the outermost layer of the multi-layer structure. In actual application, the winding assembly rotates, the second side portion gradually moves away from the reel assembly, and the screen gradually separates from the winding assembly and stretches to reach an unfolded state.

[0016] The tensioning assembly in this embodiment includes a storage member and a barrier member, the storage member is provided with a receiving groove, and the second side portion is arranged in the receiving groove. The extending direction of the receiving groove and the barrier member is the same as the extending direction of the second side portion, the barrier member is inserted into the receiving groove and presses the second side portion against the inner wall of the receiving groove, and the barrier member can cooperate with the inner wall of the receiving groove to flatten the wrinkles on the second side portion to prevent the wrinkles on the edge structure of the second side portion from extending from the second side portion toward the first side portion, thereby ensuring the flatness of the surface of the screen, thereby ensuring the projection effect, and can also cover the defects such as stitches and burrs on the edge structure of the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural schematic diagram of the projection equipment and the projection screen device provided in the embodiments of the present application.

[0019] Figure 2 yes Figure 1 A schematic structural diagram of the screen of the projection screen device shown.

[0020] Figure 3 yes Figure 1 Schematic diagram of the coordination structure of the curtain and tensioning assembly shown.

[0021] Figure 4 yes Figure 1 A schematic structural diagram of the storage component of the tensioning assembly shown.

[0022] Figure 5 yes Figure 1 Schematic diagram of the structure of the reel assembly shown.

[0023] Figure numbers: 1000, projection equipment, 200, projector, 100, projection screen device, 10, screen, 11, first side portion, 12, second side portion, 13, connecting portion, 20, winding assembly, 21, reel, 211, installation plane, 212, installation groove, 22, cover, 30, tensioning assembly, 31, storage member, 311, accommodating groove, 3111, notch, 312, connecting port, 313, bottom wall, 314, side wall, 3141, main body, 3142, limiting portion, 32, barrier member, 33, stretching member, 40, driving mechanism. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0025] See also Figure 1 , the embodiment of the present application provides a projection device 1000, which may include a projector 200 and a projection screen device 100, and the projector 200 is used to project a pattern onto the projection screen device 100. As the application environment of the projection device 1000 becomes more and more diverse, for example, in addition to being used in indoor and outdoor environments, it can also be used in the interior of a vehicle. Therefore, the size and structure of the projector 200 and the projection screen device 100 are also adaptively changed. For example, when the projection device 1000 is used in the interior of a vehicle, the size of the projector 200 and the projection screen device 100 can be set smaller, and the shape or color of the two structures can be adjusted to adapt to the interior decoration of the vehicle.

[0026] See also Figure 1 and Figure 2The projection screen device 100 in this embodiment may include a winding assembly 20 and a screen 10. The screen 10 may have a first side portion 11 and a second side portion 12, and the first side portion 11 and the second side portion 12 are respectively located at two ends of the screen 10. The winding assembly 20 is generally in the shape of a long rod, and the extension direction of the winding assembly 20 is the length direction thereof. In this embodiment, the first side portion 11 and the second side portion 12 are generally in the same extension direction as the winding assembly 20, and the first side portion 11 is connected to the winding assembly 20. The winding assembly 20 has a rotation axis in its extension direction, and the winding assembly 20 can rotate around the rotation axis, so that the screen 10 starts to be wound around the winding assembly 20 from the first side portion 11. Therefore, when the screen 10 is in a wound state, the screen 10 is wound around the winding assembly 20 and forms a multi-layer structure, the first side portion 11 is attached to the outer periphery of the winding assembly 20 and is located in the innermost layer, and the second side portion 12 is located in the outermost layer of the multi-layer structure.

[0027] The projection screen device 100 in this embodiment may further include a driving mechanism 40, and the driving mechanism 40 is connected to the winding assembly 20 of the projection screen device 100 in a driving manner to realize the automatic unfolding and storage of the screen 10. Specifically, the driving mechanism 40 is arranged at one end of the winding assembly 20 on its rotation axis and is connected to the end in a driving manner. In actual application, the driving mechanism 40 can drive the winding assembly 20 to rotate, the second side portion 12 gradually moves away from the reel 21 assembly, and the screen 10 gradually separates from the winding assembly 20 and stretches to reach an unfolded state, so as to be able to receive the projection image of the projector 200. In this embodiment, the proportion of the unfolded part of the screen 10 to the whole screen 10 can be determined according to the actual projection requirements and the actual application environment. For example, the size of the projected image is small, or the application environment is relatively small, such as the interior of a vehicle. In such cases, the screen 10 may not be fully unfolded. In this embodiment, the driving mechanism 40 may be a rotating driving member, such as a motor.

[0028] See also Figure 2 and Figure 3The projection screen device 100 in this embodiment may further include a tensioning assembly 30, which is disposed on the second side portion 12 of the screen 10. Specifically, the tensioning assembly 30 in this embodiment includes a storage member 31 and a blocking member 32, the storage member 31 is provided with a receiving groove 311, and the second side portion 12 is disposed in the receiving groove 311. The blocking member 32 in this embodiment is generally a long rod-shaped structure, and when the blocking member 32 and the second side portion 12 are in a state of abutting cooperation, the extending direction of the blocking member 32, i.e., the length direction of the blocking member 32, is generally the same as the extending direction of the second side portion 12, so that the blocking member 32 adapts to the structure of the second side portion 12. Correspondingly, the extending direction of the receiving groove 311 in this embodiment is the same as the extending direction of the blocking member 32, i.e., the extending direction of the second side portion 12, so that the second side portion 12 can be relatively stretched in the receiving groove 311. The blocking member 32 is disposed in the receiving groove 311 and can press the second side portion 12 against the inner wall of the receiving groove 311. The blocking member 32 can cooperate with the inner wall of the receiving groove 311 to flatten the wrinkles on the second side portion 12, so as to prevent the wrinkles on the edge structure of the second side portion 12 from extending from the second side portion 12 toward the first side portion 11, thereby ensuring the flatness of the surface of the screen 10 and further ensuring the projection effect. The length of the blocking member 32 in the extension direction in this embodiment can be greater than or approximately equal to the length of the second side portion 12 in the extension direction, so as to press the second side portion 12 against the inner wall of the receiving groove 311 at each position in the extension direction as much as possible, so as to avoid wrinkles at both ends of the second side portion 12 in the extension direction. In this embodiment, the storage member 31 may be a rigid structure, which is not easy to bend and deform, so that the second side portion 12 pressed against the inner wall of the receiving groove 311 does not bend and deform in the extension direction of the second side portion 12, which can prevent the local position of the curtain 10 from being sunken or protruding when the curtain 10 is in the unfolded state. The material of the storage member 31 in this embodiment can be a material with rigid characteristics such as plastic, aluminum alloy, etc.

[0029] The projection screen device 100 in this embodiment presses the movable edge of the screen 10, i.e., the second side 12, against the inner wall of the accommodating groove 311 of the storage member 31 through the blocking member 32. On the one hand, the portion of the second side 12 pressed by the blocking member 32 can be made relatively flat, and wrinkles at the edge structure of the second side 12 can be prevented from extending toward the first side 11 to ensure the flatness of the screen 10. On the other hand, defects such as stitches and burrs on the edge structure of the screen 10 can be concealed.

[0030] In some embodiments, the projection screen device 100 may further include a guide assembly, which is extended roughly along the direction from the first side portion 11 to the second side portion 12, wherein the storage member 31 and the guide assembly can be movably matched to enable the storage member 31 and the second side portion 12 to move along the direction from the first side portion 11 to the second side portion 12, thereby preventing the second side portion 12 from shifting in its extension direction during the unfolding of the screen 10, thereby preventing wrinkles from appearing on the screen 10 that obliquely penetrate the screen 10.

[0031] See also Figure 2 and Figure 3 The tensioning assembly 30 in this embodiment may also include a stretching member 33. The stretching member 33 and the barrier member 32 mentioned above are both long rod-shaped structures. When the stretching member 33 and the second side portion 12 are in a state of being fitted and connected, the extension direction of the stretching member 33 (i.e., the length direction of the stretching member 33) is substantially the same as the extension direction of the second side portion 12, so that the stretching member 33 can cooperate with the second side portion 12 and pull the second side portion 12 to pass through the receiving groove 311. Specifically, the stretching member 33 is arranged at the edge structure of the second side portion 12 away from the first side portion 11, and the stretching member 33 can be fixed to the second side portion 12 by bonding or sewing. The stretching member 33 in this embodiment can make the second side portion 12 in a state of preliminary expansion, reducing wrinkles at the edge of the second side portion 12. In an actual assembly scenario, the stretching member 33 facilitates the staff to pull the second side portion 12 of the soft curtain 10 into the receiving groove 311 through the notch 3111 of the narrow and long receiving groove 311, which can improve assembly and production efficiency. In this embodiment, when the second side portion 12 is pulled into the receiving groove 311, the stretching member 33 is located in the receiving groove 311, and the blocking member 32 is located between the notch 3111 of the receiving groove 311 and the stretching member 33. The blocking member 32 can limit the stretching member 33 from being separated from the receiving groove 311, so as to ensure the stability of the connection between the second side portion 12 and the stretching member 33 and the tensioning assembly 30.

[0032] In this embodiment, one or more stretching members 33 are provided, which can be specifically provided according to the thickness, hardness, and wrinkle degree of the curtain 10. Multiple stretching members 33 can also be provided in an overlapping manner to increase strength. In some embodiments, the tensioning assembly 30 includes two stretching members 33, which are respectively provided on two opposite side surfaces of the second side portion 12. The two stretching members 33 and the curtain 10 can be sewn together by sewing, so that the two stretching members 33 can be respectively attached to the two opposite surfaces of the second side portion 12 to jointly clamp the second side portion 12. Furthermore, the two stretching members 33 can be pressed against the second side portion 12 by tightening the stitches, so that the two stretching members 33 can jointly clamp the second side portion 12 to reduce the wrinkles on the second side portion 12.

[0033] See also Figure 2 and Figure 3 As can be seen from the foregoing, in this embodiment, the second side portion 12 and the flattening member 33 need to be inserted into the interior of the receiving groove 311 through the notch 3111 of the receiving groove 311, so the extension direction of the notch 3111 is substantially the same as the extension direction of the long rod-shaped flattening member 33 and the blocking member 32. In this embodiment, the size of the notch 3111 of the receiving groove 311 can be set smaller than the size of the blocking member 32 to limit the blocking member 32 from being separated from the receiving groove 311, so that the blocking member 32 can maintain the limiting effect on the flattening member 33.

[0034] It should be noted that the "size of the slot 3111" does not refer to the size of the slot 3111 in the extension direction (hereinafter referred to as the length size of the slot 3111), but refers to the width size of the slot 3111. The direction of the width size of the slot 3111 is substantially perpendicular to the direction of the length size of the slot 3111 (i.e., the extension direction of the slot 3111). Correspondingly, the barrier 32 in this embodiment can be a flat long rod-shaped structure. The length size of the long rod-shaped barrier 32 can be understood as the length of the barrier 32 in its extension direction. When the barrier 32 is projected along the extension direction of the barrier 32, the projection outline of the barrier 32 is substantially rectangular. The two adjacent sides of the rectangular outline are respectively defined as the width size of the barrier 32 and the thickness size of the barrier 32. The "size of the barrier 32" compared with the "size of the slot 3111" in the above text refers to the width size of the barrier 32 and the thickness size of the barrier 32. In this embodiment, the width and thickness of the blocking member 32 are both greater than the width of the notch 3111 , so that the blocking member 32 cannot be separated from the accommodating groove 311 through the notch 3111 .

[0035] In some other embodiments, when the blocking member 32 is projected along the extending direction of the blocking member 32, the projection profile of the blocking member 32 is generally circular, elliptical or irregular, and in such embodiments, the minimum outer diameter of the projection profile is greater than the width dimension of the notch 3111. In short, in any position state of the blocking member 32, the dimension of the blocking member 32 in the direction where the width dimension of the notch 3111 is located is greater than the width dimension of the notch 3111, so that the blocking member 32 cannot enter or exit the accommodating groove 311 through the notch 3111.

[0036] In order to allow the blocking member 32 to pass through the receiving groove 311, the receiving member 31 in this embodiment is provided with a communication port 312, and one end of the receiving groove 311 in the extension direction thereof is connected to the communication port 312, so that the blocking member 32 can pass through the receiving groove 311 through the communication port 312. In other embodiments, the receiving member 31 may be provided with two communication ports 312, and the two communication ports 312 are respectively connected to the two groove ends in the extension direction of the receiving groove 311, so as to improve the flexibility of installing the blocking member 32 into the receiving groove 311 or removing it from the receiving groove 311.

[0037] See also Figure 3 and Figure 4 Specifically, the storage member 31 in this embodiment includes a bottom wall 313 and two side walls 314 that are relatively spaced apart. The bottom wall 313 is connected between the two side walls 314. The bottom wall 313 and the two side walls 314 jointly define a receiving groove 311. The two side walls 314 that are away from the bottom wall 313 define a notch 3111 of the receiving groove 311. In this embodiment, the extension direction of the bottom wall 313 and the two side walls 314 are as consistent as possible with the extension direction of the second side portion 12, so that the extension direction of the receiving groove 311 and the notch 3111 is substantially the same as the extension direction of the second side portion 12, so that the second side portion 12 can be relatively flatly passed through the notch 3111 and accommodated in the receiving groove 311.

[0038] As can be seen from the foregoing, when the stretching member 33 pulls the second side portion 12 into the receiving groove 311 and the blocking member 32 is inserted into the receiving groove 311, the stretching member 33 is located between the blocking member 32 and the bottom wall 313, and the stretching member 33 is roughly attached to the bottom wall 313. In this embodiment, the stretching member 33 can be a flat long strip structure, and the distance between the blocking member 32 and the bottom wall 313 can be set to be smaller to limit the deflection of the stretching member 33 in the receiving groove 311 so that the flat stretching member 33 slides out from the notch 3111 of the receiving groove 311. In some embodiments, the size of the notch 3111 can be smaller than the width and thickness of the flattening member 33 (please refer to the definition of the width and thickness of the barrier member 32 in the previous text), and the size of the notch 3111 of the receiving groove 311 can meet the requirements of the curtain 10, i.e., the second side portion 12. Under the setting of this embodiment, in the installation step of pulling the second side portion 12 to the receiving groove 311, the flattening member 33 can be installed into the receiving groove 311 through the connecting opening 312 mentioned above, so that the second side portion 12 gradually slides into the receiving groove 311. In this embodiment, when the flattening member 33 is attached to the bottom wall 313, the opposite sides of the flattening member 33 can also abut against the two side walls 314, so as to further improve the stability of the matching relationship between the second side portion 12 and the tensioning assembly 30.

[0039] See also Figure 3 and Figure 4 , the side wall 314 in this embodiment includes a main body 3141 and a limiting portion 3142, the main body 3141 is connected between the limiting portion 3142 and the bottom wall 313, and the two limiting portions 3142 define a notch 3111 on a side away from the main body 3141. The width dimension of the notch 3111 in the foregoing text is the distance between the two limiting portions 3142. Among them, the limiting portion 3142 of each side wall 314 extends toward the other side wall 314 relative to the main body 3141 to reduce the width dimension of the notch 3111. In this embodiment, the width dimension of the notch 3111 can be adjusted by setting the extension degree of the limiting portion 3142 relative to the main body 3141.

[0040] See also Figure 3 and Figure 4 , the two sides of the barrier 32 in this embodiment are respectively in contact with the two side walls 314 so as to press the second side portion 12 against the inner wall of the receiving groove 311. This embodiment does not limit the matching relationship between the second side portion 12 and the barrier 32. As an example, the second side portion 12 can be arranged opposite to one side of the barrier 32, and be located between the barrier 32 and one of the side walls 314, and be pressed against the side wall 314 by the barrier 32. In another example, the second side portion 12 can also be wrapped around the outer periphery of the barrier 32, so that the barrier 32 can press the second side portion 12 against the two side walls 314 at the same time, so as to improve the effect of flattening wrinkles and fixing the connection.

[0041] See also Figure 5 The winding assembly 20 in this embodiment may include a reel 21, and a mounting plane 211 is provided on the reel 21. The mounting plane 211 is arranged in close contact with and fixedly connected to the first side portion 11. The first side portion 11 is connected to the mounting plane 211, and it is easy to align the first side portion 11 with the mounting plane 211, which is relatively simple to assemble. It is also convenient to observe whether the first side portion 11 and the reel 21 are installed in place, so as to avoid the deflection of the curtain 10 and prevent the curtain 10 from gradually deflecting toward one end of the reel 21 when it is wound on the reel 21.

[0042] See also Figure 5 Specifically, the outer peripheral wall of the reel 21 is partially recessed and defines a mounting groove 212, and the mounting plane 211 is the inner wall of the mounting groove 212. The curtain 10 also includes a connecting portion 13 connected to the edge of the first side portion 11. The connecting portion 13 extends relative to the first side portion 11 in a direction away from the second side portion 12. In the extension direction of the first side portion 11, the two ends of the connecting portion 13 correspond to the two ends of the first side portion 11 and are arranged at intervals so that the length of the connecting portion 13 is less than the length of the first side portion 11, that is, the connecting portion 13 and the first side portion 11 are jointly in a "convex" shape. The connecting portion 13 protruding relative to the first side portion 11 is arranged in the mounting groove 212 and fits with the mounting plane 211.

[0043] Furthermore, the winding assembly 20 also includes a cover 22, which is embedded in the installation groove 212. The outer surface of the cover 22 is flush with the outer peripheral wall of the reel 21, so that the outer peripheral surface of the reel 21 is roughly cylindrical, thereby preventing the outer peripheral wall of the reel 21 from being partially recessed due to the installation groove 212, which may cause wrinkles or deformation when the curtain 10 is wound on the reel 21.

[0044] See also Figure 5 In this embodiment, the mounting plane 211, the connecting portion 13 and the cover 22 are fixedly connected by threaded connection or pin connection. Specifically, a mounting hole (not marked in the figure) is provided on the mounting plane 211, a first through hole (not marked in the figure) is provided on the connecting portion 13, and a second through hole (not marked in the figure) is provided on the cover 22. The winding assembly 20 also includes a fixing member (screw or pin), which passes through the second through hole and the first through hole in sequence and is locked to the mounting hole to fix the reel 21, the connecting portion 13 and the cover 22. In some other embodiments, the mounting plane 211, the connecting portion 13 and the cover 22 can be fixedly connected by bonding, or the connecting portion 13 can be clamped on the mounting plane 211 by the reel 21 and the cover 22 to achieve fixed connection.

[0045] The present embodiment provides a projection screen device 100, which may include a screen 10, a winding assembly 20, and a tensioning assembly 30. In the present embodiment, the screen 10 has a first side portion 11 and a second side portion 12 that are arranged opposite to each other, wherein the first side portion 11 and the second side portion 12 extend in substantially the same direction as the winding assembly 20, and the first side portion 11 is connected to the winding assembly 20. The winding assembly 20 has a rotation axis in its extending direction, and the winding assembly 20 can rotate around the rotation axis, so that the screen 10 is wound around the winding assembly 20 starting from the first side portion 11. Therefore, when the screen 10 is in a wound state, the screen 10 is wound around the winding assembly 20 and forms a multi-layer structure, wherein the first side portion 11 is attached to the outer periphery of the winding assembly 20 and is located in the innermost layer, and the second side portion 12 is located in the outermost layer of the multi-layer structure. In actual application, the winding assembly 20 rotates, the second side portion 12 gradually moves away from the reel 21 assembly, and the curtain 10 gradually separates from the winding assembly 20 and stretches to reach an unfolded state.

[0046] The tensioning assembly 30 in this embodiment includes a storage member 31 and a blocking member 32. The storage member 31 is provided with a receiving groove 311, and the second side portion 12 is disposed in the receiving groove 311. The extending direction of the receiving groove 311 and the blocking member 32 is the same as the extending direction of the second side portion 12. The blocking member 32 is inserted into the receiving groove 311 and presses the second side portion 12 against the inner wall of the receiving groove 311. The blocking member 32 can cooperate with the inner wall of the receiving groove 311 to flatten the wrinkles on the second side portion 12 to prevent the wrinkles on the edge structure of the second side portion 12 from extending from the second side portion 12 toward the first side portion 11, thereby ensuring the flatness of the surface of the screen 10, thereby ensuring the projection effect, and can also cover the defects such as stitches and burrs on the edge structure of the screen 10.

[0047] In the specification of this application, certain words are used to refer to specific components in the specification and claims. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as the criterion for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to"; "substantially" means that those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0048] In the description of the present application, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", and "inside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are merely simplified descriptions for the convenience of describing the present application. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0049] In this application, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be internal communication between two elements, or it can be only surface contact. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A projection screen device, characterized in that: include: A curtain, the curtain having a first side portion and a second side portion, wherein the first side portion and the second side portion are respectively located at two ends of the curtain; A rolling assembly, the rolling assembly is connected to the first side portion, the curtain has a rolled state and an unfolded state relative to the rolling assembly, and in the rolled state, the curtain is rolled around the outer periphery of the rolling assembly; as well as The tensioning assembly includes a storage member and a blocking member, the storage member is provided with a receiving groove, the second side portion is arranged in the receiving groove, the blocking member is arranged in the receiving groove, the blocking member is abutted against the second side portion and pressed against the inner wall of the receiving groove, and the extension direction of the blocking member is the same as the extension direction of the second side portion.

2. The projection screen device according to claim 1, characterized in that: The tensioning assembly also includes a stretching piece arranged in the accommodating groove, the stretching piece is located in the accommodating groove and is closely connected to the second side portion, and the extension direction of the stretching piece is the same as the extension direction of the second side portion; the blocking piece is located between the notch of the accommodating groove and the stretching piece.

3. The projection screen device according to claim 1, characterized in that: The receiving member is provided with a communication port, the communication port is located at one end of the accommodating groove in its extending direction and is communicated with the accommodating groove, and the communication port is used for the blocking member to be inserted into the accommodating groove via the communication port.

4. The projection screen device according to claim 1, characterized in that: The storage piece includes a bottom wall and two side walls arranged relatively at intervals, the bottom wall is connected between the two side walls, the bottom wall and the two side walls jointly define the accommodating groove, and the two side walls away from the bottom wall define a notch of the accommodating groove; the second side portion passes through the notch and is accommodated in the accommodating groove.

5. The projection screen device according to claim 4, characterized in that: The side wall comprises a main body and a limiting portion, the main body is connected between the limiting portion and the bottom wall, and the limiting portion of each side wall extends toward another side wall relative to the main body; The limiting portions of the two side walls are spaced apart to define the notch, and the size of the notch is smaller than the size of the blocking member, so that the blocking member is limited in the accommodating groove, and the blocking member can abut against the limiting portion.

6. The projection screen device according to claim 4, characterized in that: Both sides of the barrier element are respectively in contact with the two side walls, the second side portion is located between the barrier element and at least one of the side walls, and the barrier element presses the second side portion against at least one of the side walls.

7. The projection screen device according to any one of claims 1 to 6, characterized in that: The winding assembly includes a reel, and the reel is provided with a mounting plane, and the mounting plane is arranged in close contact with and fixedly connected to the first side portion.

8. The projection screen device according to claim 7, characterized in that: The outer peripheral wall of the reel is partially recessed to define a mounting groove, and the mounting plane is the inner wall of the mounting groove; The curtain also includes a connecting portion connected to an edge of the first side portion, the connecting portion protrudes relative to the first side portion in a direction away from the second side portion, and the connecting portion is disposed in the mounting groove and fits the mounting plane; In the extension direction of the first side portion, two ends of the connecting portion and two ends of the first side portion correspond to each other and are arranged at intervals; The winding assembly further includes a cover, which is embedded in the mounting groove and clamps the connecting portion together with the mounting plane, and the outer surface of the cover is flush with the outer peripheral wall of the reel.

9. The projection screen device according to claim 8, characterized in that: The mounting plane is provided with a mounting hole, the connecting portion is provided with a first through hole, and the cover is provided with a second through hole; The winding assembly also includes a fixing member, which passes through the second through hole and the first through hole in sequence and is locked to the mounting hole to fix the reel, the connecting portion and the cover.

10. A projection device, characterized in that: include: The projection screen device according to any one of claims 1 to 9; as well as A projector is used for projecting toward the screen in the unfolded state.

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