JP3119961U - screen - Google Patents

Abstract

[PROBLEMS] To provide a screen which is excellent in portability, can be easily carried, and is difficult to bend on a curtain when the curtain is stretched.
SOLUTION: A curtain body constituting an imaging / projection surface is mounted on the back side of the curtain body on a diagonal line of the imaging / projection surface, and both lower ends of the two extension frames. By being bent and attached between the parts, by combining the bottom frame configured to pull the curtain body and the tension frame outward, the intersecting portion of the tension frame, and the bottom frame, It is stretched and held by the support frame that supports the bottom frame and the curtain.
[Selection] Figure 1

Description

The present invention relates to a photographing screen that can be easily assembled and easily transported, and particularly relates to a photographing screen that is suitable for photographing images and photographs, and for projecting images such as movies.

2. Description of the Related Art Conventionally, in photography, a screen is used as the background of a subject in order to make the subject of photography stand out clearly. Also, in movies, television news, weather forecasts, and the like, a blue background is often used that synthesizes an image with the background of a subject. Blue back is a computer-based image processing technique that removes a specific color from a photographed image and synthesizes another image with the cut-out portion. Of these, in the work of removing a specific color, called keying, if blue, which is complementary to human skin color, is used as the specific color, it has the least effect on the skin color. The back is often used. In addition, when a subject includes a blue component, a so-called green back using a green screen is often used.
By the way, in this work called keying, in order to distinguish a specific color cut out from a captured image from other colors, the specific color is expressed uniformly without shading, and the contour of the subject is clear. However, if a shadow is generated due to wrinkles or distortion of the screen, it becomes difficult.
In addition, screens used for photography and blue background are generally large and expensive, so they have been used in specialized photo shops and video production studios.

By the way, a screen similar to a screen used for such an application is a screen for enlarging and projecting a display image by a projector or the like, and a spring roll is rotatably attached to one end of the screen wound around the spring roll. Is pivotally attached to the top bar, and the repulsive force against the lowering or the upward biasing force by the height holding means locked to the expansion / contraction support means is appropriately set with respect to the elastic force and gravity of the spring attached to the spring roll. Thus, a screen that can be set to a desired height has been proposed (see Patent Document 1).

Utility Model Registration No. 3093127

However, screens used in specialized photo shops and video production studios, etc., have a fixed frame, so they cannot be folded, and are generally heavy and heavy, such as personal creators. However, there was a problem that they could not be carried and carried and the price was high.

Further, in the screen described in Document 1, since the force for stretching the screen works only in the vertical direction of the screen, it can prevent horizontal recumbency, but it is not sufficient to prevent vertical recumbency.
In this regard, the screen used in photography, especially in the blue background for creating composite video, is a keying work when performing shadows and distortions, and shadows appear in the photo for video composition processing. There was a problem of becoming an obstacle.
In addition, the screen described in Document 1 has a problem that it has a large number of parts constituting the screen, such as a spring roll, a top bar, a pantograph type expansion / contraction support means and a height holding means made of a gas spring, and is not suitable for carrying. there were. Furthermore, since the screen curtain is integrally formed with parts such as a spring roll, it is used for blue background (blue curtain), when it is used for image projection (white curtain), etc. There was a problem that the screen could not be replaced.
Therefore, for example, it is not possible to easily take to the shooting location, the curtain cannot be changed depending on the shooting situation, and it is not suitable for taking a picture or diverting to a blue background screen. there were.

The present invention has been made to solve the above-described problems, and has an object of providing a screen that is excellent in portability, can be easily carried, and is unlikely to cause wrinkles on the curtain when the curtain is stretched. To do.

In order to solve the above problems, a screen according to the present invention includes a curtain body that constitutes a photographing / projection surface, and a frame that holds the curtain body. Two curtains attached on the diagonal line of the projection surface and the two tension frames are bent and attached between the lower ends of the two tension frames so that the curtain and the tension frame are pulled outward. A bottom frame, a crossing portion of the extending frame, and a support frame that supports the curtain body by joining the bottom frame to each other are combined.
In this way, two tension frames are attached diagonally to the photographing / projection surface on the back side of the curtain, and the bottom frame is bent between the lower ends of the two tension frames. Due to the configuration to be attached, the curtain body is evenly stretched from the central portion to the side end portion. As a result, there is no wrinkle in the curtain body, and there is no need to provide frames vertically and horizontally, and the number of parts can be reduced accordingly.
Further, the strut frame connects the crossing portion of the tension frame and the bottom frame, so that the curtain body can take a stable upright posture, and the two tension frames are vertically Alternatively, the curtain body can be stabilized without swinging left and right, and the curtain can be prevented from being unstablely distorted.

The tension frame, the bottom frame, and the support frame may be separably attached.
Thus, since each said frame is comprised so that isolation | separation is possible, at the time of conveyance and accommodation, each said frame can be isolate | separated and it can be set as a compact state.

Each of the tension frame, the bottom frame, and the support frame may be configured by combining a plurality of frame members.
Thereby, even if it is a long frame one by one, since it can be shortened, it can be made a more compact state during transportation and storage.

The frame may be formed of a hollow pipe, and a rubber cord that is biased so that adjacent frame members are attracted to each other may be provided in the frame.
As described above, the frame made of the hollow pipe can be segmented by pulling it to both ends, and is configured to be bent by the rubber string in the hollow exposed in this state. The assembly process of the frame can be easily understood, and the segmented frames are integrated with each other, so there is no worry of losing parts.

A tension frame is integrally attached to the upper end of the support frame, and a bottom frame is integrally attached to the lower end of the support frame, so that the extension frame, the bottom frame and the support frame are integrally formed. May be.
Thereby, since all the frames are united, there is no worry of losing parts during transportation and storage. In addition, it is easy to understand which frame is attached to which frame.

A connection fitting having an insertion hole for holding the crossing portion of the extension frame is provided at the upper end of the support frame, and the extension frame member is inserted into the insertion hole when the frame is assembled. When the frame is housed, the stretched frame member is extracted from the insertion hole in a state where the rubber string for coupling the stretched frame member is inserted into the insertion hole. It may be.
Thereby, the tension frame and the support frame can be made into a bundle of frames oriented in parallel to each other, which is compact and convenient during storage and transportation.

A connecting bracket for connecting to the bottom frame is provided at the lower end of the support frame, and when the bottom frame is assembled, the coupling portion of the bottom frame member is inserted into the insertion hole of the connecting bracket. When the frame is stored, the bottom frame member may be extracted from the insertion hole in a state in which a rubber string that couples the bottom frame member is inserted into the insertion hole.
Thereby, when storing and transporting the bottom frame, the connection fitting and the bottom frame can be freely moved with respect to each other.

The curtain may have a floor surface portion that extends from the lower end of the frame in the shooting direction and on which a shooting target is placed.
Thereby, for example, even when a shooting material is placed on the curtain of the floor surface portion, the background of the floor surface of the placed portion does not interfere with shooting.

According to the present invention, the curtain body can be evenly stretched by the frame, so that the curtain body can be prevented from wrinkling and distortion. In addition, since the number of parts is small, it can be easily carried and stored, and the manufacturing cost can be reduced, and an inexpensive product can be provided. Further, since the frame and the curtain are configured to be separable, the curtain can be easily replaced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a state in use of a screen according to a first embodiment of the present invention. The screen 1 includes a curtain body 2 and a frame 3. The frame 3 includes frames 31, 32, 33, and a frame 34. The curtain body 2 is stretched by the frame 3 and supported so as to stand upright. Yes.

The curtain body 2 is formed in a rectangular shape, is stretched by frames 31, 32, and 34, and stands upright by the frames 33 and 34.
The curtain body 2 is composed of an upper surface portion 2a standing upright and extending from the floor, and a lower surface portion 2b laid on the floor from the lower end portion of the upper surface portion 2a toward the front (in the photographing direction). . In this embodiment, the entire curtain 2 has a size of 300 cm long × 148 cm wide, of which the upper surface portion 2 a is 200 cm × 148 cm and the lower surface portion 2 b is 100 cm long × 148 cm wide.

At the four corners of the upper surface 2 a of the curtain body 2, mounting brackets 35 are attached via rings 22 in order to attach the upper surface 2 a to the frame 3. The mounting bracket 35 has a ring formed at one end, and the other end constitutes a protrusion extending from the ring. Then, by attaching the ring of the mounting bracket 35 to the ring 22 mounted at the four corners of the upper surface portion 2a of the curtain body 2, the mounting bracket 35 can freely move and rotate along the ring 22. It has become.
The mounting bracket 35 is attached to the upper end 2 corners of the upper surface 2a, one at a time and two at the lower end 2 corners, and the ends of the frames 31 and 32 are engaged with the upper ends. The end portions of the frames 31, 32, and 34 are engaged with the lower end portion.
As shown in FIG. 3A, the coupling of the mounting bracket 35 and the frames 31, 32, 34 is inserted into the hollow hole of the frame 31 as shown in FIG. Thus, the frame 31 is attached to the curtain 2 as shown in FIG. Similarly, the frames 32 and 34 are attached to the curtain body 2 by inserting the protrusions of the mounting bracket 35 into the hollow holes of the frames 32 and 34.

The lower surface 2b of the curtain body 2 is provided with a peg ring 21 for driving the peg into the ground so that it will not be blown or fluttered by the wind when used outdoors.
Note that the size of the curtain body 2 is not limited to the above-described example, and it is possible to use a curtain body 2 having a desired size. In this case, the frame 3 is enlarged in accordance with the size of the curtain body 2. do it. In this example, the lower surface 2b is arranged substantially orthogonal to the upper surface 2a. However, the lower end of the upper surface 2a is not cornered so that the boundary between the upper surface 2a and the lower surface 2b is not a corner. The lower surface portion 2b may be laid on the floor by gently drawing an arc from a portion in front of the floor. Accordingly, it is possible to prevent a shadow from being formed by an orthogonal portion between the upper surface portion 2a and the lower surface portion 2b when photographing with a blue background.
The curtain 2 can be, for example, a white background for use in photography or a blue or green background for use in a blue background, and any color can be used.
The curtain 2 can be made of a material suitable for each of photography, blue back, etc., such as a polyester woven cloth coated with vinyl.

  The frame 3 holds the curtain body 2 upright. The frame 3 is made of flexible aluminum or the like, and includes hollow frames 31 and 32 for stretching the upper surface 2a of the curtain body 2, and a frame for supporting and standing the frames 31 and 32. 33 and a frame 34 for supporting the frames 31 and 32 via the frame 33.

  As shown in FIGS. 1 and 2C, the frames 31 and 32 are provided so as to cross along the diagonal line of the upper surface portion 2 a of the curtain body 2. Therefore, the frames 31 and 32 cross each other at the center (center of gravity) of the upper surface portion 2a of the curtain body 2.

  The frames 31 and 32 have a predetermined length longer than the diagonal line of the upper surface portion 2a of the curtain body 2, and they are bent in an arcuate shape when the frames 31 and 32 are attached to the upper surface portion 2a. Thus, tension is applied to the upper surface portion 2a in a diagonal direction. As a result, the upper surface portion 2a is pulled in the direction of the four corners from the diagonal center to the outer side, and no distortion or wrinkle occurs as shown in FIG.

  As shown in FIGS. 1 and 2A, the frame 34 is formed to be longer than the length of the upper surface portion 2a in the short direction, and in the state where the frame 34 is attached to the upper surface portion 2a, the frame 34 is attached to be bent in a substantially semicircular shape by an amount longer than the length of the upper surface portion 2a in the short direction, and this bending forms a surface for standing the screen 1 with respect to the ground. Tension can be applied to the body 2 in the direction of opening outward, thereby preventing vertical warps.

A frame 33 is attached to the center of the arc of the frame 34 from the intersection of the frames 31 and 32. FIG. 4 shows an enlarged view of a joint portion between the frames 31 and 32 and the frame 33.
As shown in FIG. 4, a joint 36 is attached to one end of the frame 33. The joint 36 is provided with two insertion holes. The insertion holes are formed so as to be orthogonal to the diagonal line of the upper surface portion 2a, whereby the frames 31, 32 passed through the insertion holes are orthogonal. Held.
The joint 36 is provided with an insertion hole that is open in the vertical direction, and the upper end portion of the frame 33 is integrally attached to the insertion hole. As shown in FIG. 7, the attachment portion has a small diameter portion formed with a small diameter at the upper end portion of the frame 33 inserted into the hole of the joint 36, and the upper end portion thereof is caulked. You can't get out of it.

The lower end of the frame 33 is joined at the midpoint of the frame 34, and the frames 31 and 32 are supported by the frame 34. FIG. 5 shows an enlarged view of the coupling portion at the lower end. As shown in FIG. 5, a joint 37 is attached to the midpoint of the frame 34. As shown in FIG. 5 (A), the joint 37 is provided with a protrusion on the frame 34 in which the frame 34 protrudes in a direction orthogonal to the frame 33, and the protrusion of the hollow frame 33 is formed on the protrusion of the joint 37. By engaging the hole at the lower end, the frame 33 and the frame 34 are coupled as shown in FIG. Further, an insertion hole is formed in the joint 37 in a direction orthogonal to the protrusion, and the frame 34 is inserted into the insertion hole. The insertion hole of the joint 37 is formed to be slightly larger than the diameter of the frame 34, and the angle of the protrusion of the joint 37 can be freely determined with respect to the surface (semicircular surface) formed by the frame 37. It is easy to assemble.
The frames 31 and 32 can stand on the floor by being supported by the frame 33 and the semicircular frame 34.

Each of the frames 31 to 34 is made by joining together a plurality of frame members. The structure of this frame will be described using the frame 31 as an example. As shown in FIG. 6, the frame 31 is formed by joining and assembling frame members 31a. Each frame member 31a is formed in a hollow pipe shape and constitutes a small-diameter portion whose one end is reduced in diameter, and this small-diameter portion is fitted in a hollow hole of another adjacent frame member 31a. As a result, a connected frame 31 is formed. A rubber string 38 is attached to the hollow portion of the frame 31 to urge the frames 31a so as to attract each other. Both ends of the rubber cord 38 are fixed to both ends of the frame 31, and even if the frame member 31a is separated, the frame member 31a is coupled by the tension of the rubber cord 38 so that they do not fall apart. The force that biases in the direction will work.
In this example, the frame 31 has been described, but the other frames 32 to 34 have the same configuration.

Regarding the screen 1 described above, a method for handling the screen 1 from the state in use to carrying or storing will be described. The state of the screen 1 in use in this embodiment is the same as that in FIG.
First, in order to separate the curtain 2 and the frame 3 in the engaged state as shown in FIG. 1, as shown in FIG. 3, the mounting brackets 35 at the four corners of the engaged upper surface portion 2 a are attached to the frames 31 and 32. , 34 is pulled out from the hollow holes and removed from the frames 31, 32, 34. As a result, the curtain body 2 is removed from the frame 3, so that it can be folded and stored.

Then, as shown in FIG. 7, pull both ends of the frames 31 and 32 in the state shown in FIG. 4 in the direction of separating them to separate them into the frame members 31a and 32a to expose the internal rubber strap 38, The frames 31 and 32 are bent at the rubber cord 38 portion. Similarly, the frames 33 and 34 are also bent by pulling both ends away from each other to expose the rubber cord 38.
Further, as shown in FIG. 7, when the frames 31, 32 are separated and the rubber string is exposed and bent at the joint 36, the frames 31, 32, 33 are bundled parallel to each other. be able to. Similarly, as shown in FIG. 8, the frame 34 is also a part of the joint 37, and is separated into the frame member 34 a so that the rubber string is exposed and bent, so that the protrusion of the joint 37 and the frame 34 are made parallel to each other. , You can keep them out of the way.

In this way, the folded frames 31 to 34 can be made into a bundle of short frames and can be easily carried and stored.
When assembling, the reverse process is followed. That is, the separated frames 31 to 34 are connected in series, and the mounting brackets 35 provided at the four corners of the upper surface portion 2a are engaged with the frames 31, 32, and 34.
According to such a configuration, the frame 3 can be folded so as not to be bulky, which is convenient during transportation and storage.

With the above-described configuration of the screen 1 according to the present embodiment, the projections of the mounting brackets 35 at the four corners of the upper surface portion 2a can be simply fitted into the hollow holes of the frames 31, 32, and 34 and coupled. The curtain body 2 can be evenly stretched from the central portion to the side end portion.
In addition, since the curtain body 2 is stretched and held upright only by the frame 3 including only the four frames 31 to 34, the number of parts can be reduced.
Further, since the frame 3 and the curtain body 2 are configured to be separable by the mounting bracket 35 provided on the curtain body 2, the curtain body can be easily replaced.

  When the screen 1 in this embodiment is used outdoors, the pegs are driven into three peg rings 21 provided on the lower surface portion 2b, and the ring 22 provided on the upper surface portion 2a. By driving the pegs into the two rings 22 at the lower end, the screen 1 is stably upright with respect to the ground and can withstand wind. Further, when it is desired to further improve the stability, an annular rubber string is wound around the position of the joint 37 of the frame 34, and a peg can be driven into the ring.

Next, the screen 1 according to the second embodiment configured to be carried and stored more easily will be described.
In the first embodiment described above, an example in which the frame 33 is configured to be detachable from the frame 34 and is attached and assembled in use has been described. Instead, the frame 33 and the frame 34 are attached. This is an example in which the bracket 37 is integrated.
Even if it is configured in this way, the frame 34 that is rotatably inserted into the insertion hole of the mounting bracket 37 is also configured to be rotatable with respect to the frame 33. Therefore, as in the first embodiment. The convenience during assembly and storage is not lost.
As a result, the frame 31, the frame 32, the frames 33, and 34 can all be integrally connected via the rubber string, so that part of the frame is not lost, and for which frame, As it is easy to understand which frame to install, it is easy to assemble.

It is a perspective view which shows the screen which concerns on embodiment of this invention. It is the top view (A) of the screen which concerns on this Embodiment, a front view (B), a rear view (C), and a side view (D). It is a figure which shows (A) before a coupling | bonding and (B) after a coupling | bonding about the coupling | bonding of the screen body and frame which concern on this Embodiment. It is a figure which shows the state of the 1st joint which concerns on this Embodiment. It is a figure which shows (A) before joining and (B) after joining about the state of the 2nd joint which concerns on this Embodiment. It is the figure which showed the isolation | separation state of the flame | frame comprised so that isolation | separation was possible based on this Embodiment. It is the figure which showed the isolation | separation state of the flame | frame comprised according to this Embodiment so that isolation | separation was possible, and a joint. It is the figure which showed the isolation | separation state of the flame | frame comprised according to this Embodiment so that isolation | separation was possible, and a joint.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Screen, 2 ... Curtain body, 2a ... Upper surface part, 2b ... Lower surface part, 3 ... Frame, 21 ... Ring for pegs, 22 ... Ring, 31 ... -Frame, 31a ... Frame member, 32 ... Frame, 32a ... Frame member, 33 ... Frame, 34 ... Frame, 34a ... Frame member, 35 ... Mounting bracket, 36 ... Joint, 37 ... Joint, 38 ... Rubber string

Claims (8)

It has a curtain that constitutes the shooting / projection surface, and a frame that holds this curtain,
The frame has two tension frames attached to the back side of the curtain on the diagonal line of the photographing / projection surface;
A bottom frame configured to pull the curtain and the tension frame outward by being bent and attached between both lower ends of the two tension frames;
It is composed of a support frame that supports the bottom frame and the curtain body by joining the intersecting portion of the tension frame and the bottom frame.
A screen characterized by that. The tension frame, the bottom frame, and the support frame are each attached to be separable,
The screen according to claim 1. The tension frame, the bottom frame, and the support frame are each configured by combining a plurality of frame members.
The screen according to claim 1 or 2. The frame is constituted by a hollow pipe,
Inside the frame is provided a rubber string that is biased so that adjacent frame members attract each other,
The screen according to claim 3. A tension frame is integrally attached to the upper end of the support frame, and a bottom frame is integrally attached to the lower end of the support frame, so that the extension frame, the bottom frame and the support frame are integrally formed. Being
The screen according to claim 1. A connection fitting having an insertion hole for holding the crossing portion of the tension frame is provided at the upper end of the support frame,
When the frame is assembled, the coupling portion of the tension frame member is fitted into the insertion hole, and a rubber string for coupling the tension frame member is inserted into the insertion hole when the frame is stored. The tension frame member is configured to be extracted from the insertion hole in a state.
The screen according to claim 4 or 5. The lower end of the support frame is provided with a connecting bracket for connecting to the bottom frame,
When the bottom frame is assembled, the coupling portion of the bottom frame member is fitted into the insertion hole of the coupling metal, and when the frame is stored, a rubber string for coupling the bottom frame member is inserted into the insertion hole. The bottom frame member is configured to be extracted from the insertion hole in a state of being inserted into
The screen according to claim 4. The curtain body is laid in the shooting direction from the lower end of the frame and has a floor surface portion on which a shooting target is placed.
The screen according to claim 1.