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CN-116047853-B - Projection screen and projection device

CN116047853BCN 116047853 BCN116047853 BCN 116047853BCN-116047853-B

Abstract

The application discloses a projection screen and projection equipment, and belongs to the technical field of projection. The projection screen comprises a projection curtain, a supporting component and a winding drum component, one end of the projection curtain is connected with the winding drum component, a plurality of supporting bars in the supporting component are arranged on the back surface of the projection curtain along the direction away from the winding drum component, when the projection curtain is wound on the winding drum component to form multiple layers, at least a first supporting bar is arranged on an n-th layer of the projection curtain in the multiple layers, at least a second supporting bar is arranged on an n+1-th layer of the projection curtain, overlapping areas exist between orthographic projection of the first supporting bar on the n-th layer of the projection curtain and orthographic projection of the second supporting bar on the n-th layer of the projection curtain, and further the supporting bars on the projection curtains on different layers can mutually play a supporting role, so that when the supporting bars on the different layers are completely staggered, the projection curtain generates indentation or fold, the problem that the display effect of the projection screen in the related technology is poor is solved, and the display effect of the projection curtain is improved.

Inventors

  • CHEN YOUCAI
  • ZHONG QIANG
  • YANG CHANGMING
  • SUN PENG

Assignees

  • 青岛海信激光显示股份有限公司
  • 青岛超高清视频创新科技有限公司

Dates

Publication Date
20260505
Application Date
20230213

Claims (8)

  1. 1. The projection screen is characterized by comprising a projection curtain, a supporting component and a winding drum component; One end of the projection curtain is connected with the winding drum assembly; The support assembly comprises a plurality of support bars, the support bars are positioned on the back surface of the projection curtain, when the projection curtain is unfolded, the support bars are distributed on the back surface of the projection curtain along the direction away from the winding drum assembly, when the projection curtain is wound on the winding drum assembly to be a plurality of layers, at least a first support bar is arranged on an nth layer of projection curtain in the plurality of layers, at least a second support bar is arranged on an n+1th layer of projection curtain, and an overlapping area exists between the orthographic projection of the first support bar on the nth layer of projection curtain and the orthographic projection of the second support bar on the nth layer of projection curtain, wherein n is more than or equal to 1; The spacing between two adjacent support bars on the n-th layer projection curtain in the circumferential direction is smaller than the spacing between two adjacent support bars on the n+1th layer projection curtain in the circumferential direction, or the width of the support bars on the n-th layer projection curtain in the circumferential direction is smaller than the width of the support bars on the n+1th layer projection curtain in the circumferential direction.
  2. 2. The projection screen of claim 1, wherein the circumferential spacing between two adjacent support bars on the n-th projection screen is smaller than the circumferential spacing between two adjacent support bars on the n+1-th projection screen, and the circumferential spacing between any two adjacent support bars in the plurality of support bars on the n-th projection screen is equal.
  3. 3. The projection screen of claim 1, wherein, in the case where a circumferential spacing of two adjacent support bars on the n-th projection screen is smaller than a circumferential spacing of two adjacent support bars on the n+1-th projection screen, widths of the plurality of support bars in the circumferential direction are the same, and an overlapping area of an orthographic projection of the first support bar on the n-th projection screen and an orthographic projection of the second support bar on the n-th projection screen has a width in the circumferential direction that is greater than or equal to three-fourths of a width of the support bar.
  4. 4. The projection screen of claim 1, wherein the width of the support bar on the n-th projection screen in the circumferential direction is smaller than the width of the support bar on the n+1-th projection screen in the circumferential direction, and the widths of the support bars on the n-th projection screen in the circumferential direction are all equal.
  5. 5. The projection screen of claim 1, wherein the width of the support bar on the n-th projection screen in the circumferential direction is smaller than the width of the support bar on the n+1-th projection screen in the circumferential direction, and the interval between two adjacent support bars on the n-th projection screen in the circumferential direction is smaller than the interval between two adjacent support bars on the n+1-th projection screen in the circumferential direction.
  6. 6. The projection screen of any one of claims 1-5, wherein the support bar comprises a hard material layer and a flexible material layer, the hard material layer is positioned on the back of the projection screen, and the flexible material layer is stacked on a side of the hard material layer away from the projection screen; or the support assembly further comprises a flexible layer covering the plurality of support bars.
  7. 7. The projection screen of any one of claims 1 to 5 wherein the support strip is bonded to the projection screen; or the supporting component further comprises a plurality of fixing structures positioned on the projection curtain, and the supporting strips are positioned on the fixing structures; or the projection screen further comprises a cover layer, and the supporting strips are positioned between the cover layer and the projection curtain.
  8. 8. A projection device comprising a projector and a projection screen according to any one of claims 1 to 7.

Description

Projection screen and projection device Technical Field The present application relates to the field of projection technologies, and in particular, to a projection screen and a projection apparatus. Background A projection screen is a device for receiving an image projected by a projector. A projection screen comprises a curtain and a winding drum, wherein one end of the curtain is connected with the winding drum so as to be conveniently stored on the winding drum, a plurality of support bars are arranged on the back surface of the curtain, and the support bars are uniformly distributed on the curtain along the direction away from the winding drum so as to support the curtain and avoid the winding of the curtain. However, in the above projection screen in the curled state, the curtain is easily extruded by the support bar to generate creases or folds, resulting in poor display effect of the projection screen. Disclosure of Invention The embodiment of the application provides a projection screen and projection equipment. The technical scheme is as follows: according to a first aspect of the present application, there is provided a projection screen comprising a projection screen, a support assembly, and a roll assembly; One end of the projection curtain is connected with the winding drum assembly; The supporting component comprises a plurality of supporting bars, the supporting bars are located on the back of the projection curtain, and when the projection curtain is unfolded, the supporting bars are arranged on the back of the projection curtain along the direction away from the winding drum component, when the projection curtain is wound on the winding drum component to form multiple layers, the projection curtain is at least provided with a first supporting bar on an nth layer of projection curtain, at least provided with a second supporting bar on an n+1th layer of projection curtain, and the orthographic projection of the first supporting bar on the nth layer of projection curtain and the orthographic projection of the second supporting bar on the nth layer of projection curtain are overlapped, wherein n is more than or equal to 1. Optionally, the interval between two adjacent support bars on the n-th layer projection curtain in the circumferential direction is smaller than the interval between two adjacent support bars on the n+1-th layer projection curtain in the circumferential direction. Optionally, among the plurality of support bars on the n-th layer projection curtain, the interval between any two adjacent support bars in the circumferential direction is equal. Optionally, the widths of the plurality of support bars in the circumferential direction are the same, and the width of the overlapping area of the orthographic projection of the first support bar on the n-th layer projection curtain and the orthographic projection of the second support bar on the n-th layer projection curtain in the circumferential direction is greater than or equal to three fourths of the width of the support bars. Optionally, the width of the supporting strips on the n-th layer of projection curtain in the circumferential direction is smaller than the width of the supporting strips on the n+1-th layer of projection curtain in the circumferential direction. Optionally, the widths of the supporting strips on the n-th layer of projection curtain in the circumferential direction are equal. Optionally, the interval between two adjacent support bars on the n-th layer projection curtain in the circumferential direction is smaller than the interval between two adjacent support bars on the n+1-th layer projection curtain in the circumferential direction. Optionally, the support bar includes a hard material layer and a flexible material layer, the hard material layer is located on the back of the projection curtain, and the flexible material layer is stacked on one side of the hard material layer far away from the projection curtain; or the support assembly further comprises a flexible layer covering the plurality of support bars. Optionally, the support bar is bonded to the projection curtain; or the supporting component further comprises a plurality of fixing structures positioned on the projection curtain, and the supporting strips are positioned on the fixing structures; or the projection screen further comprises a cover layer, and the supporting strips are positioned between the cover layer and the projection curtain. According to another aspect of an embodiment of the present application, there is provided a projection apparatus including a projector and the above-described projection screen. The technical scheme provided by the embodiment of the application has the beneficial effects that at least: Through setting up a plurality of support bars in the supporting component to make the projection curtain curl when winding to the reel subassembly, the support bar on the projection curtain of different layers in the multilayer