Projection curtain device

Abstract

The utility model discloses a projection curtain device which comprises a curtain, the front side of the curtain is white, the back side of the curtain is non-white, the curtain penetrates through a supporting mechanism in a sliding mode, the front end and the rear end of the curtain vertically fall below the supporting mechanism in parallel, and the bottoms of the front end and the rear end of the curtain are provided with limiting rods used for preventing the curtain from slipping off from the supporting mechanism. When the two limiting rods are pulled to the lowest positions, the two faces of the curtain face forwards, the reverse face of the curtain faces downwards and makes contact with the supporting mechanism, and each limiting rod is provided with a traction rope. The device can ensure the flatness of the curtain and the white surface is not easy to stain.

Description

Technical Field

[0001] The utility model relates to a projection device, in particular to a projection screen device Background Art

[0002] At present, there are many categories of consumer electronic products, and the usage rate of household projection audio-visual products among them has been increasing year by year. Projecting the picture onto a screen for display can significantly improve the image quality. Therefore, the screen has become the most important device companion for projection products. The common screen is pure white and fixed on the wall. When not in use, it needs to be retracted through a special bracket, and when in use, it is pulled out and placed vertically against the wall. Since the screen is long-term curled and stored inside the bracket device, after being pulled out from the special bracket, during actual use, the surface of the screen cannot be completely perpendicular to the ground, showing a slight bending phenomenon, which may cause local geometric distortion in the reflected picture of the screen and reduce the user's viewing experience. If the screen is not retracted and the screen is pulled out and placed for a long time, the bending phenomenon on the surface of the screen can be improved or even eliminated by the action of gravity. However, since the front surface of the screen is pure white, it is easy to contact with soup or other dirt and leave marks, affecting the use effect. At the same time, hanging a pure white screen in front of the wall will also make the interior lack beauty and reduce the user experience Summary of the Invention

[0003] Purpose of the utility model: The purpose of the utility model is to provide a projection screen device that can ensure the flatness of the screen and the white surface is not easily soiled

[0004] Technical solution: The projection screen device described in the utility model includes a screen. The front side of the screen is white and the back side is non-white. The screen is slidably connected through the support mechanism, and the front and rear ends of the screen perpendicularly fall below the support mechanism in parallel. Limiting rods for preventing the screen from slipping off the support mechanism are provided at the bottoms of the front and rear ends of the screen; when the two limiting rods are respectively pulled to the lowest positions, the two sides of the screen face forward respectively

[0005] Based on the above technical solution, the screen is slidably connected through the support mechanism, and the front and rear ends of the screen perpendicularly fall below the support mechanism in parallel, that is, the front and rear ends of the screen are equivalent to falling perpendicularly side by side in parallel below the support mechanism. When one end drops, the other end rises. By pulling different ends to the lowest positions, the front and back sides of the screen are respectively switched to face forward. The front side of the screen is white and can be used as a projection screen, and the back side is non-white. Even if it is contacted by dirt and leaves marks, it will not affect the use of the front side as a projection screen; when projection is not required, the back side of the screen faces forward. Because of the self-weight of the limiting rods at the ends of the screen, the screen will be tightened and will not bend, thus ensuring the overall flatness of the screen. When the front side of the screen faces forward, it can also maintain flatness, improving the use experience

[0006] Preferably, the back side of the screen contacts the support structure downward

[0007] With the back side of the curtain facing downwards, the back side is in contact with the support mechanism. In this way, during the process of switching the front and back sides of the curtain, the front side will not be worn.

[0008] Preferably, a towing rope is provided on each limiting rod.

[0009] The provision of the towing rope facilitates pulling the limiting rod to complete the switching of the front and back sides of the curtain to face forward.

[0010] Preferably, a landscape painting is provided on the back side of the curtain.

[0011] The provision of a landscape painting on the back side of the curtain can enhance the overall aesthetic feeling when the back side faces forward in daily use.

[0012] Preferably, the support mechanism is a support plate provided with two through grooves arranged side by side and matching the curtain. The front and rear ends of the curtain respectively pass through the two through grooves and vertically drop below the support plate in parallel.

[0013] Preferably, the width of the limiting rod is greater than the width of the through groove.

[0014] The width of the limiting rod being greater than the width of the through groove can prevent the curtain from slipping out of the through groove of the support plate.

[0015] Preferably, a cover body for closing the upper part thereof is provided on the support mechanism.

[0016] Closing the upper part of the support mechanism through the cover body can prevent dust and the like from falling on the curtain above and leaving marks, affecting the use.

[0017] Preferably, two round rods are rotatably connected inside the cover body, and a gap for the curtain to pass through is provided between the two round rods.

[0018] The end of the curtain penetrates into the cover body through an opening groove of the support plate, then passes through the gap between the two round rods, and then penetrates out of the cover body through another opening groove of the support plate. In this way, the curtain is equivalent to being wound around one of the round rods, and the other round rod plays a limiting role. When the limiting rod at the end of the curtain is pulled to switch the front and back sides, the round rod will rotate accordingly, making the switching smoother. Without the round rod, sliding friction will occur between the curtain and the support plate during the switching of the front and back sides, exacerbating the wear of the curtain. That is, the provision of the round rod not only improves the smoothness of the switching of the front and back sides of the curtain but also reduces the wear of the curtain.

[0019] Preferably, the two round rods are arranged vertically side by side.

[0020] The two round rods are arranged vertically side by side, so that the curtain basically does not come into contact with the upper round rod, reducing the possibility of contact and causing pollution or wear between the two.

[0021] Beneficial effects: Compared with the prior art, the beneficial effects of the present utility model are as follows: By pulling the limiting rods at the bottom of the front and rear ends of the curtain to the bottom respectively, the front and back sides of the curtain are switched to face forward. When not in use, having the back side face forward can not only keep the curtain flat but also prevent the front side of the curtain from being contaminated by flow marks, thus affecting its use. Description of the drawings

[0022] Figure 1 It is a schematic structural diagram of the support mechanism and the cover body;

[0023] Figure 2 It is a schematic structural diagram of the curtain, Figure 2 a is a schematic diagram of the front side of the curtain, Figure 2 b is a schematic diagram of the back side of the curtain;

[0024] Figure 3 It is a schematic plan view of the projection curtain device;

[0025] Figure 4 It is a schematic three-dimensional structure diagram of the projection curtain device. Specific implementation manners

[0026] As shown in the figure, the projection curtain device of the present utility model includes a curtain 1. The front side of the curtain 1 is white and the back side is non-white. The curtain 1 is slidably connected through the support mechanism 2. The front and rear ends of the curtain 1 vertically fall parallel to the lower part of the support mechanism 2. Limiting rods 3 for preventing it from slipping off the support mechanism 2 are provided at the bottoms of the front and rear ends of the curtain 1; when the two limiting rods 3 are respectively pulled to the lowest positions, the two sides of the curtain 1 face forward respectively.

[0027] Patterns such as landscape paintings can be printed on the back side of the curtain 1. In this way, during daily use, the back side usually faces forward, and the curtain can be used as a decoration to improve the aesthetic feeling.

[0028] The support mechanism 2 is a support plate provided with two opening grooves matching the curtain 1. The two ends of the curtain 1 respectively pass through the two opening grooves. After the end passes through the opening groove, a limiting rod 3 is provided at the end. The two limiting rods 3 both freely hang below the support plate. The front and rear ends of the curtain 1 vertically fall parallel to the lower part of the support plate side by side; the width of the limiting rod 3 is greater than the width of the opening groove to prevent the end of the curtain 1 from slipping out of the opening groove; a traction rope 4 is provided on each limiting rod 3 to facilitate pulling the limiting rod 3 downward to complete the switching of the front and back sides of the curtain 1 facing forward. Of course, the traction rope 4 can also not be provided, and the limiting rod 3 can be directly pulled; the back side of the curtain 1 faces downward, so that its contact surface with the support plate is the back side, avoiding the front side of the curtain 1 from being worn during the sliding process.

[0029] A cover body 5 for closing the upper part thereof is provided on the support mechanism 2. Two round rods 6 are rotatably connected in the cover body 5. The two round rods 6 are arranged vertically in parallel. A gap for the curtain 1 to pass through is provided between the two round rods 6. That is, the curtain 1 first passes through an opening groove of the support plate, then passes through the gap between the round rods 6, and then passes out through another opening groove of the support plate. Then, limit rods 3 are arranged at both ends of the curtain 1. The lower round rod 6 is in contact with the curtain 1, and the upper round rod 6 is used to limit the upward displacement of the curtain 1.

[0030] The support mechanism 2 may also be a horizontally arranged support plate. An opening groove matching the curtain 1 is provided through the front and rear sides of the support plate. The curtain 1 passes through the opening groove. Both ends of the curtain 1 are located on the front and rear sides of the support plate. The front and back sides of the curtain 1 facing forward are switched by pulling both ends of the curtain 1 back and forth.

[0031] When projection is required, the front limit rod 3 is pulled to the bottom to make the front side of the curtain 1 face forward. When projection is not required, the rear limit rod 3 is pulled to the bottom to make the back side of the curtain 1 face forward. If the front side of the curtain 1 is facing down, then the limit rod 3 pulled when switching the front and back sides of the curtain 1 facing forward is the opposite.

Claims

1. A projection screen device, comprising a screen (1), characterized in that: The front of the curtain (1) is white and the back is non-white. The curtain (1) is slidably connected through the support mechanism (2). The front and rear ends of the curtain (1) vertically drop parallel to each other below the support mechanism (2). Limit rods (3) are provided at the bottoms of the front and rear ends of the curtain (1) to prevent it from slipping off the support mechanism (2); when the two limit rods (3) are respectively pulled to the lowest position, the two sides of the curtain (1) face forward respectively.

2. The projection screen device according to claim 1, characterized in that: The back of the curtain (1) faces downwards and contacts the support structure (2).

3. The projection screen device according to claim 1, characterized in that: A towing rope (4) is provided on each limit rod (3).

4. A projection screen device according to claim 1, wherein: A landscape painting is provided on the back of the curtain (1).

5. The projection screen device according to claim 1, wherein: The support mechanism (2) is a support plate provided with two through grooves arranged side by side and matching the curtain (1). The front and rear ends of the curtain (1) respectively pass through the two through grooves and vertically drop parallel to each other below the support plate.

6. The projection screen device according to claim 5, wherein: The width of the limit rod (3) is greater than the width of the through groove.

7. The projection screen device according to claim 5, wherein: A cover body (5) for closing the upper part thereof is provided on the support mechanism (2).

8. A projection screen device according to claim 7, wherein: Two round rods (6) are rotatably connected in the cover body (5). A gap for the curtain (1) to pass through is provided between the two round rods (6).

9. The projection screen device according to claim 8, wherein: The two round rods (6) are arranged vertically side by side.

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