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Projection device

A technology of projection equipment and projection screen, which is applied in the field of projection, can solve the problems of increasing the complexity of lifting components and the difficulty of controlling the lifting of screens, and achieves the effect of avoiding the setting of the power supply system and the control system, reducing the complexity of the structure and the difficulty of control.

Pending Publication Date: 2022-05-10
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when unfolding the screen, the lifting assembly usually includes a driving motor, and the driving motor requires an additional power supply and control system, which increases the complexity of the lifting assembly and the difficulty in controlling the lifting of the screen

Method used

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Embodiment Construction

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0051] figure 1 A schematic structural diagram of a projection device according to an embodiment of the present application is illustrated. Such as figure 1 As shown, the projection device includes: an optical engine 1, the optical engine 1 is used to emit light beams; a projection screen 2, the projection screen 2 includes a base 21, a curling assembly 22, a lifting assembly 23 and a curtain sheet 24, and the curling assembly 22 is rotatably fixed on On the base 21, the lifting assembly 23 is fixed on the base 21, and the two opposite sides of the curtain sheet 24 are respectively fixedly connected with the curling assembly 22 and the lifting assembly 23, and the curling assembly 22 and the lifting assembly 23 are ...

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Abstract

The embodiment of the invention discloses projection equipment, and belongs to the technical field of projection. The projection equipment comprises an optical engine and a projection screen, the projection screen comprises a base, a curling assembly, a lifting assembly and a screen piece, and the lifting assembly comprises a lifting frame, a hydraulic rod and a cross beam; the first end of the lifting frame and the first end of the hydraulic rod are rotatably connected to the base, the second end of the lifting frame is rotatably connected with the cross beam, and the second end of the hydraulic rod is rotatably connected with the lifting frame; and two opposite side edges of the curtain sheet are fixedly connected with the curling assembly and the cross beam respectively. In the embodiment of the invention, through the arrangement of the hydraulic rod, the elastic potential energy can be stored when the curtain sheet is folded, and the curtain sheet can be unfolded based on the stored elastic potential energy, so that the arrangement of an additional power supply system and a control system is avoided, and the structural complexity and the control difficulty of the lifting assembly are reduced.

Description

technical field [0001] The embodiments of the present application relate to the field of projection technology, and in particular, to a projection device. Background technique [0002] With the continuous development of science and technology, projection equipment is more and more used in people's work and life. Currently, projection equipment mainly includes an optical engine and a projection screen. Wherein, the projection screen includes a curtain sheet, a curling assembly and a lifting assembly, and the two opposite sides on the curtain sheet are respectively fixedly connected with the curling assembly and the lifting assembly, so that the curling and lifting of the curtain sheet can be realized under the cooperative control of the curling assembly and the lifting assembly. Expand. [0003] However, when unfolding the screen, the lifting assembly usually includes a driving motor, and the driving motor requires an additional power supply and control system, which increa...

Claims

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Application Information

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IPC IPC(8): G03B21/58
CPCG03B21/58
Inventor 陈友才杨长明
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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