JPH08320515A - Balanced diffuser frame - Google Patents

Abstract

PURPOSE: To obtain a comparatively large-sized diffuser frame which is stably supported at one supporting point and where the setting of arbitrary position and angle is facilitated by connecting an auxiliary arm to an extension arm attached at one side of a frame and connecting a weight to the auxiliary arm. CONSTITUTION: The extension frame 2 is attached at one side of the frame 1. The auxiliary arm 3 is connected to the extension arm 2. Also the weight 4 is connected to the auxiliary arm 3. The center of gravity is lowered from the center of the frame 1 and also is brought close to the side of the extension arm 2. Therefore, when the supporting point is set on the extension arm 2, distance to the center of the gravity is made to be small without affecting the main body of the diffuser. Thus, an entire structure is stably held by supporting it at one point. When rotation is made around a supporting point, a large reaction torque does not occur, so that the setting of a necessary angle is facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame for spreading and fixing a curtain-shaped or thin plate-shaped diffuser material, which is used for improving the quality of light such as photographing illumination.

[0002]

2. Description of the Related Art A diffuser may be required to have a sufficiently large area and flatness with respect to the scale of a subject, and a large frame having high strength is required. However, when supporting the frame, it is necessary to avoid that the projections of the columns and other parts extend to the diffuser body as much as possible. Therefore, it is difficult to easily support the vicinity of the center of gravity of the frame, and it is necessary to use a plurality of supporting points and to use a large auxiliary material to satisfy the required position and angle.

[0003]

DISCLOSURE OF THE INVENTION The present invention is to develop a relatively large diffuser frame which can be stably held at one support point and can easily set an arbitrary position and angle. It is what

[0004]

According to the present invention, [a] an extension arm (2) is attached to one side of a frame (1). [B] Connect the auxiliary arm (3) to the extension arm (2). [C] Connect the weight (4) to the auxiliary arm (3). The device is constructed as follows.

[0005]

[Operation] According to the present invention, the center of gravity is lowered from the center of the frame (1) and brought closer to the side of the extension arm (2). Therefore, if a support point is provided on the extension arm (2), the distance to the center of gravity can be reduced without affecting the diffuser body, so that it is possible to stably hold the entire structure with one support. Become. Further, even if a rotation is given around the support point, a large reaction torque is not generated, and the required angle can be easily set.

[0006]

Embodiments [a] In carrying out the present invention, [a] one side of the frame (1) is extended and used in place of the extension arm (2). [B] The connection between the extension arm (2) and the auxiliary arm (3) is movable on the extension arm (2). [C] The connection between the auxiliary arm (3) and the weight (4) is made movable on the auxiliary arm (3). be able to.

[0007]

As described above, the number of stands, fasteners, struts, etc. required to support the diffuser frame can be greatly reduced, and moreover, the entire surface of the diffuser can be
Since it can be used by plugging in, the surrounding space can be used more effectively.

[Brief description of drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is a perspective view of use of the present invention.

[Explanation of symbols]

 1 is a frame 2 is an extension arm 3 is an auxiliary arm 4 is a weight

Claims (2)

[Claims] 1. [a] An extension arm (2) is attached to one side of a frame (1). [B] Connect the auxiliary arm (3) to the extension arm (2). [C] Connect the weight (4) to the auxiliary arm (3). A balanced diffuser frame constructed as described above. 2. The balanced diffuser frame according to claim 1, wherein a considerable side of the frame (1) is extended and used instead of the extension arm (2).