JP2008209615A - Photographing auxiliary tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact photographing auxiliary tool excelling in portability which homogeneously diffuses light by constituting a diffuser part in arch shape, also prevents the situation where a back screen part curves by a large amount to cause shading on a background color so as to be foldable and easily assembled. <P>SOLUTION: The arch-shaped diffuser part is constituted by fixing both ends of a U-shaped flexible frame material in the concave-curved base part of a loop-shaped flexible frame material bent so that the ends opposed to each other on a center line become the concave curved base part and ends opposing each other orthogonally to the center line may be a top part, and stretching and providing a light diffusion sheet on the loop-shaped flexible frame material, while the back screen part is constituted by successively stretching and providing a mat sheet to the U-shaped flexible frame material and an aperture part on the depth side of the arch-shaped part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a photographing aid that prevents shadows and halation from occurring in the photographing result of a subject to be photographed, can be easily assembled and stored, and is important for photographing a subject. The screen slope is formed in an ideal state.

  If there is a shadow or halation in the photographed subject, the quality of the photograph is deteriorated, and it is important to prevent the occurrence of the shadow or halation particularly in a commercial photograph whose shooting result affects the image of the product. In particular, when photographing using a lighting fixture, shadows and halation are likely to occur. Therefore, a photographing means that diffuses light using a plurality of lighting fixtures and reflectors is employed. However, such photographing means has become a large-scale photographing system and requires a large amount of equipment costs.

  By the way, when a relatively small subject is to be photographed, such a large-scale photographing system is not required, so that it is a simple photographing stand intended to be easily assembled so as not to cause shadows and halation. The thing is proposed (refer patent document 1).

The technique disclosed in Patent Document 1 has three rectangular diffuser plates that should be positioned on the top surface, the left side, and the right side surface, and a rectangular back plate that should be positioned on the back surface. The diffuser plate can be assembled and disassembled in a box shape with the front and lower surfaces open, and the above-described back plate is formed by stretching a translucent diffuser sheet having a large number of fine irregularities on both the front and back sides in a substantially uniform distribution. A screen having a length extending from the inner surface of the back plate to the lower surface and extending from the inner surface of the back plate so as to be detachable, and having a plurality of flexible back screens with different colors. Is.
Utility model registration No. 3074934

  In the case of the above-described conventional configuration, the back plate and the left and right side diffuser plates are opened parallel to each other and arranged on the table, and each side is locked by hook tape and loop tape, and the front and bottom surfaces are opened. Assembled into a shaped diffuser box. The back screen is disposed in the diffuser box while being locked to the hook tape on the back plate.

  As can be understood from the configuration as described above, the back plate and the left and right side diffusers are independent components. Is required. Further, when the photographing is finished, a complicated work of disassembling from the assembled state and housing in the case is required.

  Further, since the diffuser has a box shape, the light transmission state is different between each side portion and the central portion of the rectangular diffuser plate, and the light cannot be diffused uniformly. In addition, it is ideal that the back screen has a slope that curves greatly from the floor surface. However, in the above-described conventional configuration, the back screen is suspended from the upper end of the back plate, and the slope is close to the floor surface. It is only partly formed.

  The present invention has been made in view of the above-described conventional problems, and the above-described problems are solved by each means described below. That is, in the first aspect of the present invention, the loop-like flexibility is formed such that the opposite ends on the center line become a concave curved bottom and the opposite ends perpendicular to the center line become the top. While fixing both ends of the U-shaped flexible frame material to the concave curved bottom of the frame material, and constructing an arch-shaped diffused portion by stretching a light diffusion sheet on the loop-shaped flexible frame material, A matting sheet is stretched continuously from the U-shaped flexible frame material and the opening on the depth side of the arch-shaped portion to provide a photographing auxiliary tool having a back screen portion.

  According to a second aspect of the present invention, in the photographing assisting tool according to the first aspect, the loop-shaped flexible frame material has an elliptical shape.

  According to a third aspect of the present invention, in the photographing auxiliary tool according to the first aspect, a web is stretched between the end portion of the front end opening of the diffuser portion and the back screen portion.

  According to a fourth aspect of the present invention, in the photographing auxiliary tool according to the first aspect, the back screen portion is provided with an elastic loop.

  According to the first aspect of the present invention, since the diffuse portion is configured in an arch shape, the light can be uniformly diffused and the back screen portion has a large curved slope so that the background color is shaded. Can be prevented. In addition, since the frame material is flexible, it can be twisted and folded, and it is very easy to assemble, so that it can be a compact photographing aid having excellent portability.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the lateral width and height of the diffused portion are increased by adopting an elliptical loop frame material. Therefore, it is possible to manufacture photographing aids having different sizes.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1, since the web is stretched between the diffuser portion and the back screen portion, the light entering from the side portion can be blocked. And the lighting condition of the subject can be kept stable.

  According to the invention described in claim 4, in addition to the effect of the invention described in claim 1, since the back screen portion is provided with the elastic loop, the folded state of the photographing auxiliary tool can be held by the elastic loop. It is easy to accommodate in the carrying case.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a bent state of a loop-shaped flexible frame material 2 and a U-shaped flexible frame material 3 which are constituent elements of the photographing auxiliary tool 1 of the present invention. It is formed in an elongated rim shape from a material such as resin. The two-dimensional shape of the loop-shaped flexible frame member 2 before bending is a circle or an ellipse, and the opposite ends on the center line of the loop-shaped flexible frame member 2 of the circle or ellipse are concave curved bottoms 2a. Then, the end portions that are orthogonal to the center line and face each other are bent into a three-dimensional shape that becomes the top portion 2b.

  And the edge part 3a of the U-shaped flexible frame material 3 is fixed to the concave curved bottom part 2a of the loop-shaped flexible frame material 2 by appropriate means such as adhesion, and the U-shaped two-dimensional shape is maintained. . As shown in FIG. 2, the loop-shaped flexible frame material 2 bent in this way is formed by, for example, forming a light-diffusion sheet 4 having a light diffusion effect such as polyester taffeta 210D with the loop-shaped flexible frame material 2. It is stretched along the external shape. The light diffusion sheet 4 stretched in this way becomes an arch shape, and the diffused portion A is configured.

  On the other hand, for example, a mat sheet 5 such as polyester (knitted fabric) is formed on the U-shaped flexible frame material 3 by the U-shaped flexible frame material and the loop-shaped flexible frame material 2. The back screen portion B is formed by continuously extending the opening on the depth side of the arch-shaped portion. With this configuration, as shown in FIG. 3, the back screen portion B has a slope whose rear portion is greatly curved, and the mat sheet 5 is pulled by the elastic action of the loop-shaped flexible frame member 2 so that there is no looseness. A state is formed.

  Reference numeral 6 denotes a web made of the same material as that of the light diffusion sheet 4, and is stretched between the end portion of the front end opening of the diffuser portion A and the back screen portion B, and enters from the side portion. It is designed to block light. An elastic loop 7 for bundling is connected to the front end of the diffused portion A.

  The photographing auxiliary tool 1 of the present invention is configured as described above, and the operation procedure when the photographing auxiliary tool 1 is folded will be described below. In the state shown in FIG. 4, which is established by the elastic action of the loop-shaped flexible frame member 2 and can be used, the front end portion A1 of the diffuser portion A and the front end portion B1 of the back screen portion B are overlapped. Match (A1 + B1) and hold as shown in FIG. Further, the overlapping portion (A1 + B1) and the rear end portion A2 of the diffused portion A are overlapped, and the overlapping portion (A2 + (A1 + B1)) is held with the right hand as shown in FIG.

  Next, with the overlapping portion (A2 + (A1 + B1)) being held, the portion C is bent with the left hand so as to be folded as shown in FIG. Then, as shown in FIG. 8, when the C part is further pushed in with the left hand and overlapped from the top so as to cover the D part with the right hand, each part of A1, A2, B1, C, D becomes a triple ring, The convolution is complete. Therefore, the elastic loop 7 at the front end of the diffused portion A is pulled and held on the main body of the photographing auxiliary tool 1 as shown in FIG.

  The above is the operation of housing the photographing auxiliary tool 1 in the established state. To make the photographing auxiliary tool 1 accommodated in the carrying case E usable, the elastic loop 7 of the taken photographing auxiliary tool 1 is latched. Since the elastic force of the loop-shaped flexible frame material 2 is released by removing the frame, the U-shaped flexible frame material 3 is instantaneously developed together with the U-shaped flexible frame material 3 to reach the established state shown in FIG. Can be used.

It is a figure which shows the bending state of the loop-shaped flexible frame material which is a component of this invention, and a U-shaped flexible frame material. It is a figure which shows the completion state of the imaging assistance tool of this invention. It is sectional drawing of the imaging assistance tool of this invention. It is a figure which shows the 1st process of the procedure which convolves the photography auxiliary tool of this invention. It is a figure which shows the 2nd process of the procedure which convolves the photography auxiliary tool of this invention. It is a figure which shows the 3rd process of the procedure which convolves the imaging | photography auxiliary tool of this invention. It is a figure which shows the 4th process of the procedure which convolves the imaging | photography auxiliary tool of this invention. It is a figure which shows the 5th process of the procedure which convolves the photography auxiliary tool of this invention. It is a figure which shows the 6th process of the procedure which convolves the photography auxiliary tool of this invention. It is a figure which shows the 7th process of the procedure which convolves the imaging | photography auxiliary tool of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... photography assistance tool 2 .... loop-shaped flexible frame material 3 .... U-shaped flexible frame material 4 .... light diffusion sheet 5・ ・ ・ ・ ・ ・ Matte sheet 6 ・ ・ ・ ・ ・ ・ Web 7 ・ ・ ・ ・ ・ ・ Elastic loop A ・ ・ ・ ・ ・ ・ Diffuse part B ・ ・ ・ ・ ・ ・ Back screen part

Claims (4)

A U-shape is formed on the bottom of the concave curve of the loop-shaped flexible frame member that is bent so that the opposite ends on the center line become a concave curved bottom and the opposite ends perpendicular to the central line become the top. Fixing both ends of the flexible frame material,
A light diffusion sheet is stretched over the loop-shaped flexible frame material to form an arch-shaped diffuse part, while continuing to the U-shaped flexible frame material and the opening on the depth side of the arch-shaped part. Then, a photographing auxiliary tool characterized in that a matte sheet is stretched to form a back screen portion.   2. The photographing auxiliary tool according to claim 1, wherein the loop-shaped flexible frame material has an elliptical shape.   The photographing auxiliary tool according to claim 1, wherein a web is stretched between an end of a front end opening of the diffuser and the back screen.   The photographing auxiliary tool according to claim 1, wherein the back screen portion includes an elastic loop.

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