WO2016061955A1 - 投影显示设备保护装置和投影显示设备 - Google Patents

投影显示设备保护装置和投影显示设备 Download PDF

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Publication number
WO2016061955A1
WO2016061955A1 PCT/CN2015/072763 CN2015072763W WO2016061955A1 WO 2016061955 A1 WO2016061955 A1 WO 2016061955A1 CN 2015072763 W CN2015072763 W CN 2015072763W WO 2016061955 A1 WO2016061955 A1 WO 2016061955A1
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Prior art keywords
projection display
display device
shield
lens
protective cover
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PCT/CN2015/072763
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English (en)
French (fr)
Inventor
王自上
Original Assignee
海信集团有限公司
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Application filed by 海信集团有限公司 filed Critical 海信集团有限公司
Publication of WO2016061955A1 publication Critical patent/WO2016061955A1/zh

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details

Definitions

  • the invention relates to the field of optics, and in particular to a projection display device protection device and a projection display device having the projection display device protection device.
  • a conventional projection display device that condenses light emitted from a laser light source to a DMD (Digital Micromirror Device), emits light from a lens and is reflected by a mirror, and finally projects a color image onto a screen.
  • DMD Digital Micromirror Device
  • the lens in the projection display device is usually exposed to the outside of the projection display device, which causes the following problems:
  • the bareness between the long turns makes it easy for the lens to accumulate dust, and the accumulated dust can reduce the sharpness of the displayed image;
  • In order to maintain the clarity of the displayed image it is necessary to wipe the dust accumulated on the lens frequently, which is easy to cause damage to the lens, and long-term exposure, there will be unexpected friction and impact damage to the lens problem solution.
  • Embodiments of the present application provide a projection display device protection device and a projection display device to solve the technical problem that the lens of the projection display device in the prior art is easily exposed.
  • a projection display device protection device comprising a base and a shield device; the shield device is fixed to the base and located in front of the lens in the projection display device.
  • the protective cover device includes a protective cover and a shield bracket; the shield bracket is fixed on the base, and two ends of the shield are respectively fixed on the shield bracket.
  • the shield device further includes a shield driving motor; the shield driving motor is coupled to either end of the shield.
  • the protective cover device further includes a rear limit switch fixed to the bottom of the shield bracket.
  • the protective cover device further includes a front limit switch fixed to the top of the shield bracket. [0011] Further, the protective cover device further includes a buffering member fixed to one side of the protective cover.
  • the buffer member is fixed on the shield bracket by a sheet metal member with a bracket.
  • the protective cover device further includes a driving circuit that drives the protective cover driving motor.
  • the protective cover has an arc shape.
  • a projection display apparatus comprising a lens and a projection display device protection device as described above.
  • Embodiments of the present application provide a projection display device protection device, and a protective cover is disposed at a front end of a lens of the projection display device.
  • the protective cover is closed to prevent dust accumulation, and the same Prevents accidental friction and collision damage to the lens and protects the lens.
  • FIG. 1 is a schematic overall view of a projection display device protection device according to an embodiment of the present application.
  • FIG. 2 is a schematic perspective structural view of a protective cover according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a protective cover fixing structure according to an embodiment of the present application.
  • the embodiment of the present application provides a projection display device protection device and a projection display device to solve the technical problem that the lens of the projection display device in the prior art is easily exposed to the outside, by providing a protective cover in front of the lens.
  • a protective cover in front of the lens.
  • the protective cover can protect the lens from dust accumulation frequently, so that it is not necessary to wipe the lens frequently, reducing the possibility of damage to the lens.
  • FIG. 1 to FIG. 3 are schematic diagrams showing the structure of a protection device for a projection display device according to an embodiment of the present application.
  • the projection display device protection device provided by the embodiment of the present application, the base 402 and the protective cover are mounted Set (301, 302a. 302b. 303-308);
  • the shield assembly is fixed to the base and located in front of the lens in the projection display device.
  • the protective cover By providing a protective cover in front of the lens, when the projection display device is not working, the protective cover is closed, which can prevent accidental friction and collision from damaging the lens. Moreover, the protective cover can protect the lens from accumulating dust frequently, so that it is not necessary to wipe frequently. The lens reduces the possibility of damage to the lens.
  • the projection display device protection device provided by the present application is introduced in a preferred embodiment.
  • the shield device includes a shield 301 and a shield bracket 306.
  • the shield bracket is fixed to the base, and the two ends of the shield are respectively fixed to the shield bracket.
  • the protective cover is disposed in front of the lens. It can be understood that the protective cover is used to cover the exposed portion of the projection lens, and of course, the protective cover can be set according to the needs of the exposed structural position of the lens. On the obliquely above the lens, or obliquely below, as long as it can play a protective role.
  • the structure of the protective cover device is such that after the projection display device starts working, the protective cover is rotated downward or upward, so that the protective cover moves from the front of the lens, and after the projection display device stops working, the protective cover is upward or Rotate the cover down on the front of the lens.
  • the shield device may further include a shield driving motor 303; the shield driving motor is connected to either end of the shield for driving the rotation of the shield; after the projection display device starts working, the shield is driven The motor drive shield rotates downward or upward, and after the projection display device stops working, the shield drive motor drives the shield to rotate up or down.
  • the shield driving motor is connected to either end of the shield for driving the rotation of the shield; after the projection display device starts working, the shield is driven
  • the motor drive shield rotates downward or upward, and after the projection display device stops working, the shield drive motor drives the shield to rotate up or down.
  • the shield drive motor can be secured to the shield bracket by an arcuate shield drive motor mount 308 as shown in FIG.
  • the shield assembly further includes a rear limit switch 302b secured to the bottom of the shield bracket and a front limit switch 302a secured to the top of the shield bracket.
  • roller blind motor and the hood drive motor are controlled by a motor drive circuit 307 fixed to the base.
  • the protection of the embodiment of the present application Cover device also includes The buffering member 304 is fixed on one side of the protective cover; the cushioning member is fixed at one end of the protective cover, and the protective cover is deformed to buffer and reduce the deformation, and the protective cover can be used for a long time; the cushioning member can preferably pass A sheet metal member 305 with a bracket is attached to the shield bracket.
  • Embodiments of the present application further provide a projection display device including a lens and the above-described projection display device protection device.
  • the projection display device protection device has been described in detail above and will not be described here.
  • the projection display device protection device and the projection display device provided by the embodiments of the present application are provided with a protective cover device in front of the lens, and driven by the protective cover driving motor, after the projection display device works, the driving protective cover moves from the front of the lens.
  • the driving cover covers the lens, so that the projection display device does not work, preventing accidental friction and collision damage to the lens, and the protective cover can protect the lens. Dust is accumulated frequently, so that it is not necessary to wipe the lens frequently, reducing the possibility of damage to the lens.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

一种投影显示设备保护装置和投影显示设备，以解决投影显示装置中的镜头裸露在外容易受损伤的技术问题。包括底座（402）和防护罩装置（301, 302a, 302b, 303-308）。防护罩装置（301, 302a, 302b, 303-308）固定于底座（402）上，并位于投影显示设备中的镜头的前方。通过在镜头前设置防护罩，在投影显示装置不工作时，关闭防护罩，能防止意外的摩擦和碰撞损坏镜头，而且，防护罩能保护镜头不会频繁积存灰尘，从而不必经常擦拭镜头，降低镜头受损伤的可能性。

Description

发明名称：投影显示设备保护装置和投影显示设备 技术领域
[0001] 涉及光学领域， 具体涉及一种投影显示设备保护装置和具有所述投影显示设备 保护装置的投影显示设备。
背景技术
[0002] 现有的投影显示设备， 将从激光光源发射的光聚光至 DMD (数字微镜设备） 后从镜头发出并经反射镜的反射， 最终将彩色图像投射至屏幕上。
技术问题
[0003] 投影显示设备中的镜头， 通常都裸露在投影显示设备的外部， 这样会造成如下 问题： 长吋间的裸露， 容易使镜头积压灰尘， 积压的灰尘会降低显示图像的清 晰度； 而为了保持显示图像的清晰度， 需要经常擦拭镜头上堆积的灰尘， 这样 容易造成镜头的损伤， 而且长期的裸露， 也会存在意外的摩擦和撞击损坏镜头 问题的解决方案
技术解决方案
[0004] 本申请实施例通过提供一种投影显示设备保护装置和投影显示设备， 以解决现 有技术中投影显示设备的镜头裸露在外容易受损伤的技术问题。
[0005] 为解决上述技术问题， 本申请实施例采用以下技术方案予以实现：
[0006] 提出了一种投影显示设备保护装置， 包括底座和防护罩装置； 所述防护罩装置 固定于所述底座上， 并位于所述投影显示设备中的镜头的前方。
[0007] 进一步的， 所述防护罩装置包括防护罩和防护罩支架； 所述防护罩支架固定于 所述底座上， 所述防护罩的两端分别固定于所述防护罩支架上。
[0008] 进一步的， 所述防护罩装置还包括防护罩驱动马达； 所述防护罩驱动马达连接 于所述防护罩的任一端。
[0009] 进一步的， 所述防护罩装置还包括固定于所述防护罩支架底部的后限位幵关。
[0010] 进一步的， 所述防护罩装置还包括固定于所述防护罩支架顶部的前限位幵关。 [0011] 进一步的， 所述防护罩装置还包括固定于所述防护罩一侧的缓冲件。
[0012] 进一步的， 所述缓冲件通过一带支架的钣金件固定在所述防护罩支架上。
[0013] 进一步的， 所述防护罩装置还包括驱动所述防护罩驱动马达的驱动电路。
[0014] 进一步的， 所述防护罩形状为弓形。
[0015] 还提出了一种投影显示设备， 包括镜头和如前所述的投影显示设备保护装置。
发明的有益效果
有益效果
[0016] 本申请实施例通过提供一种投影显示设备保护装置， 在投影显示设备的镜头的 前端设置防护罩， 在投影显示设备不工作的吋候， 防护罩关闭， 能防止积灰， 同吋防止意外的摩擦和碰撞损坏镜头， 起到保护镜头的作用。
对附图的简要说明
附图说明
[0017] 图 1为本申请实施例体提出的投影显示设备保护装置的整体示意图；
[0018] 图 2为本申请实施例提出的防护罩的立体结构示意图；
[0019] 图 3为本申请实施例提出的防护罩固定结构示意图。
实施该发明的最佳实施例
本发明的最佳实施方式
[0020] 本申请实施例通过提供一种投影显示设备保护装置和投影显示设备， 以解决现 有技术中投影显示设备的镜头裸露在外容易受损伤的技术问题， 通过在镜头前 设置防护罩， 在投影显示装置不工作吋， 关闭防护罩， 能防止意外的摩擦和碰 撞损坏镜头， 而且， 防护罩能保护镜头不会频繁积存灰尘， 从而不必经常擦拭 镜头， 降低镜头受损伤的可能性。
[0021] 为了更好的理解上述技术方案， 下面将结合说明书附图以及具体的实施方式， 对上述技术方案进行详细的说明。
[0022] 如图 1至图 3所示， 为本申请实施例提供的投影显示设备保护装置的结构示意图
[0023] 如图 1所示， 本申请实施例提供的投影显示设备保护装置， 底座 402和防护罩装 置 （301、 302a. 302b. 303-308) ； 防护罩装置固定于底座上， 并位于投影显示 设备中的镜头的前方。
[0024] 通过在镜头前设置防护罩， 在投影显示装置不工作吋， 关闭防护罩， 能防止意 外的摩擦和碰撞损坏镜头， 而且， 防护罩能保护镜头不会频繁积存灰尘， 从而 不必经常擦拭镜头， 降低镜头受损伤的可能性。
[0025] 下面， 以优选的实施例对本申请提供的投影显示设备保护装置展幵介绍。
[0026] 如图 1、 图 2和图 3所示， 防护罩装置包括防护罩 301和防护罩支架 306; 防护罩 支架固定于底座上， 防护罩的两端分别固定于防护罩支架上。
[0027] 本实用新型实施例中， 防护罩设置于镜头的前方， 可以理解， 防护罩是用于遮 盖投影镜头裸露在外的部分， 当然也可以根据镜头裸露部分结构位置的需要， 将防护罩设置在镜头的斜上方， 或者斜下方， 只要能够起到防护作用均可。
[0028] 上述防护罩装置的结构， 在投影显示设备幵始工作吋， 让防护罩向下或向上转 动， 使得防护罩从镜头前方移幵， 在投影显示设备停止工作吋， 让防护罩向上 或向下转动罩在镜头的前方。
[0029] 优选的， 防护罩装置还可以包括防护罩驱动马达 303 ; 防护罩驱动马达连接于 防护罩的任一端， 用于驱动防护罩的转动； 在投影显示设备幵始工作吋， 防护 罩驱动马达驱动防护罩向下或向上转动， 而在投影显示设备停止工作吋， 防护 罩驱动马达驱动防护罩向上或向下转动。
[0030] 防护罩驱动马达可以如图 3所示， 用一个弓形的防护罩驱动马达固定件 308固定 在防护罩支架上。
[0031] 防护罩装置还包括固定于防护罩支架底部的后限位幵关 302b和固定于防护罩支 架顶部的前限位幵关 302a。 在防护罩向上转动触碰前限位幵关后， 防护罩驱动马 达停止驱动防护罩向上转动， 在防护罩向下转动触碰后限位幵关后， 防护罩驱 动马达停止驱动防护罩向下转动。
[0032] 如图 3所示， 卷帘马达和防护罩驱动马达通过固定在底座上的马达驱动电路 307 来控制。
[0033] 防护罩在转动过程中触碰前限位幵关或者后限位幵关吋， 受限位幵关的阻力作 用容易产生形变， 长期使用， 会损坏防护罩， 本申请实施例的防护罩装置还包 括固定于防护罩一侧的缓冲件 304; 缓冲件固定在防护罩的一端， 在防护罩产生 形变吋， 起到缓冲减小形变的作用， 保证防护罩能够长期使用； 缓冲件优选的 可以通过一带支架的钣金件 305固定在防护罩支架上。
[0034] 本申请实施例还提出一种投影显示设备， 该投影显示设备包括镜头和上述的投 影显示设备保护装置。 投影显示设备保护装置以上已经详述， 此处不予赘述。
[0035] 本申请实施例提供的投影显示设备保护装置和投影显示设备， 在镜头前设置防 护罩装置， 通过防护罩驱动马达的驱动， 在投影显示设备工作吋， 驱动防护罩 从镜头前移幵， 保证投影显示设备的正常工作， 在投影显示设备结束工作吋， 驱动防护罩遮盖住镜头， 使得投影显示设备不工作吋， 能防止意外的摩擦和碰 撞损坏镜头， 而且， 防护罩能保护镜头不会频繁积存灰尘， 从而不必经常擦拭 镜头， 降低镜头受损伤的可能性。

Claims

权利要求书
[权利要求 1] 投影显示设备保护装置， 其特征在于， 包括底座和防护罩装置； 所述防护罩装置固定于所述底座上， 并位于所述投影显示设备中 的镜头的前方。
2.根据权利要求 1所述的投影显示设备保护装置， 其特征在于， 所 述防护罩装置包括防护罩和防护罩支架； 所述防护罩支架固定于 所述底座上， 所述防护罩的两端分别固定于所述防护罩支架上。
3.根据权利要求 2所述的投影显示设备保护装置， 其特征在于， 所 述防护罩装置还包括防护罩驱动马达； 所述防护罩驱动马达连接 于所述防护罩的任一端。
4.根据权利要求 2所述的投影显示设备保护装置， 其特征在于， 所 述防护罩装置还包括固定于所述防护罩支架底部的后限位幵关。
5.根据权利要求 2所述的投影显示设备保护装置， 其特征在于， 所 述防护罩装置还包括固定于所述防护罩支架顶部的前限位幵关。
6.根据权利要求 2所述的投影显示设备保护装置， 其特征在于， 所 述防护罩装置还包括固定于所述防护罩一侧的缓冲件。
7.根据权利要求 6所述的投影显示设备保护装置， 其特征在于， 所 述缓冲件通过一带支架的钣金件固定在所述防护罩支架上。
8.根据权利要求 3所述的投影显示设备保护装置， 其特征在于， 所 述防护罩装置还包括驱动所述防护罩驱动马达的驱动电路。
9.根据权利要求 1所述的投影设备保护装置， 其特征在于， 所述防 护罩形状为弓形。
10.—种投影显示设备， 包括镜头， 其特征在于， 还包括如权利要 求 1-9任一项权利要求所述的投影显示设备保护装置。
PCT/CN2015/072763 2014-10-20 2015-02-11 投影显示设备保护装置和投影显示设备 WO2016061955A1 (zh)

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CN204116795U (zh) * 2014-10-20 2015-01-21 海信集团有限公司 投影显示设备保护装置和投影显示设备
CN107968926A (zh) * 2017-11-17 2018-04-27 常州信息职业技术学院 一种防刮擦的激光电视

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