JP2010145456A - Screen unit for projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen unit for a projector for clearly projecting an image from the projector without distortion, at low cost by simple constitution. <P>SOLUTION: A positioning plate 15 is formed with a regulation member 17 abutting on the projector 1 to regulate (position) a mounting position (installation position) thereof. The regulation member 17, for example includes a first regulation member 17a for regulating (positioning) the mounting (installation) position along an X-direction of the projector 1 (direction along a space between a screen face and the projector), and a second regulation member 17b for regulating (positioning) the mounting position along a Y-direction (width direction of the screen). The regulation member 17, for example may be formed integrally with the positioning plate 15. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a projector screen unit that projects light projected from a projector.

In recent years, a projector that projects and displays an image created and processed by a computer or the like in a meeting or a presentation or an image recorded on a recording medium on a screen.
Widely used in general.

Among such projectors, for example, a proximity projection type projector is known that is mounted in the vicinity immediately below the screen, projects light such as an image in an obliquely upward direction, and displays the image on the screen. In such a proximity projection type projector, the distance between the projector and the screen is extremely close, and the incident angle of the projection light with respect to the screen is a steep angle such as 70 ° or more. For this reason, if the installation distance or installation angle of the projector with respect to the screen is slightly shifted from the predetermined position, the image projected on the screen will be deformed into a trapezoidal shape, or part of the image will protrude from the screen. Occurs.

Thus, in order to project an image projected from a proximity projection type projector clearly on a screen without distortion, for example, Patent Document 1 discloses a video projection unit (projector).
A video display device is described in which a measuring unit that measures the relative position and orientation of the video display unit (screen) and the video display unit (screen) can be provided so that a viewer can view a clear video even if the screen position is changed. Has been.
JP 2008-33234 A

However, in the configuration described in Patent Document 1, a complicated configuration in which a measuring unit that measures a relative position and orientation with respect to a video display unit (screen) is provided on the video projection unit (projector) side, and costly. There was a problem from the viewpoint of practicality.

Some aspects according to the present invention have been made in view of the above circumstances, and provide a projector screen unit capable of clearly displaying an image from a projector without distortion with a simple configuration and low cost. .

In order to solve the above problems, some aspects of the present invention provide the following projector screen unit.
That is, the projector screen unit of the present invention is attached to the screen for projecting the light projected from the projector, the screen box for accommodating the screen movably between the deployment position and the accommodation position, and the screen box.
And a pedestal on which a restricting member for restricting an installation position of the projector with respect to the screen is formed in contact with a part of the projector.

As a result, when projecting an image using a projector, simply attach the pedestal to the screen box and place the projector in contact with the regulating member. It is possible to guide to a clear image and a position where it can be projected. Therefore, unlike the prior art, there is no need to move the position of the projector while viewing the state of the projected image, and the projector can be set in a short time. In addition, the projector need not be provided with measuring means for measuring the relative position and orientation with respect to the screen, and the projector can be quickly set with a simple configuration at low cost.

It is preferable that the pedestal further includes an adjustment mechanism capable of adjusting an angle with respect to the installation surface of the projector and a distance of the projector with respect to the screen. As a result, the relative position between the projector and the screen can be finely adjusted, and a clear image with no distortion can be displayed on the screen.

It is preferable that a pedestal accommodating portion for accommodating the pedestal is provided inside the screen box. This makes it possible to keep the projector screen unit compact even when the projector is not used.

The pedestal, due to its own weight when the projector is placed,
It is preferable to be pressed against the installation surface. Thereby, a heavy projector is placed on the pedestal, and the entire screen box is placed without swinging. Therefore, the screen stands up without swinging along the direction perpendicular to the installation surface, and the projected image can be projected clearly without blurring.

The regulating member is a screw for coupling to the projector by screwing;
Or it is preferable that it is a screw hole. As a result, the relative position between the projector and the screen can be fixed without shifting, and the projection angle of the projection light of the projector can be adjusted.

You may further provide the rack which accommodates the said screen box, the said base, and the said projector. Thereby, a screen box and a projector can be accommodated in a compact and predetermined position.

The best mode of the projector screen unit of the present invention will be described. In addition,
This embodiment is specifically described in order to make the gist of the invention better understood, and is not intended to limit the present invention unless otherwise specified. The drawings used in the following description are as follows:
In order to make the characteristics of the present invention easier to understand, for convenience, there are cases where the main part is shown in an enlarged manner, and the dimensional ratios and the like of the respective components are not always the same.

FIG. 1 is an external perspective view showing a screen unit for a projector according to the present invention. FIG. 2 is an external perspective view showing the projector screen unit in a state in which the screen is accommodated. 3 is a plan view of the projector screen unit as seen from above, and FIG. 4 is a side sectional view.
Projector screen unit of the present invention (hereinafter referred to as a screen unit)
10 is a screen 11 that projects light (projection light) R projected from the projector 1;
A screen box 12 for accommodating the screen and a pedestal 13 attached to the screen box 12 are provided.

The screen 11 may be, for example, a resin sheet whose surface has been subjected to antireflection treatment.
The screen box 12 may be a rectangular hollow box formed of a strong material such as metal, for example. Inside the hollow screen box 12, the screen 11 is wound and accommodated in a roll shape. A slit-shaped opening 12 a for inserting and removing the screen 11 is formed on one surface (upper surface) of the screen box 12.
Thereby, the screen 11 is located between the unfolded position (FIG. 1) where the image projected from the projector 1 is projected and the accommodated position (FIG. 2) accommodated inside the screen box 12 when not in use. It is possible to move with.

A lid 18 that can be freely opened and closed is attached to a side surface of the screen box 12.
By opening the lid 18, the internal space of the screen box 12 is exposed. A pedestal accommodating portion 14 for accommodating a pedestal 13 to be described later is formed in the lower portion of the space in which the screen 11 is wound and accommodated inside the screen box 12. When the pedestal 13 is taken out or accommodated from the pedestal accommodating portion 14, the lid 18 is opened and the pedestal 13 is taken in and out from the screen box 12.

The pedestal 13 is formed of, for example, a rigid metal as a whole, and the screen box 1
2 is detachably fixed to the bottom portion. The pedestal 13 includes, for example, a positioning plate 15 that comes into contact with the projector 1 and a stabilizing plate 16 on which the screen box 12 is stably placed so that the screen 11 at the unfolded position does not swing. The positioning plate 15 and the stabilization plate 16 may be formed individually or integrally.

Even if the screen 11 is slightly swung, the image projected from the projector 1 may be distorted. Therefore, by attaching wide stabilizers 16 to both ends of the screen box 12, the screen 11 can be stabilized at the unfolded position. And deploy.

The positioning plate 15 is in contact with the projector 1 and restricts its placement position (installation position) (
A regulating member 17 for positioning) is formed. The restricting member 17 includes, for example, a first restricting member 17a that restricts (positions) the placement (installation) position of the projector 1 in the X direction (direction along the interval between the screen surface and the projector), and the Y direction (screen). And a second regulating member 17b that regulates (positions) the mounting position in the width direction. Such a regulating member 1
7 may be formed integrally with the positioning plate 15, for example.

The operation of the screen unit 10 having such a configuration will be described. Screen unit 10
When the image projected from the projector 1 is projected using, first, the lid 18 of the screen box 12 is opened, and the pedestal 13 is taken out from the pedestal accommodating portion 14. Then, the positioning plate 15 and the stabilization plate 16 constituting this pedestal are attached to the bottom of the screen box 12.

Next, the projector 1 used for image projection is placed on the positioning plate 15. At this time, the projector 1 is placed so that the casing of the projector 1 is pressed to a position where the casing contacts the first restriction member 17a and the second restriction member 17b. Such a regulating member 17 is provided at a position where an image projected from the projector 1 can be clearly displayed on the screen 11 without distortion or blur when the projector 1 is brought into contact with the regulating member 17.

Thus, if the screen unit 10 is used, the projector 1 is connected to the screen 1.
1 can be easily set at a predetermined position, that is, a position where the light (projection light) R projected from the projector 1 is projected on the surface of the screen 11 without a distortion or blur. . Then, by placing the projector 1 in contact with the regulating member 17 provided on the positioning plate 15, the light (projection light) R projected from the projector 1 has a predetermined optical axis with respect to the screen 11. Projected at an angle θ1, and the screen 11
A clear image without distortion or blur appears on the surface of

Further, the screen box 12 that supports the screen 11 can be stably placed by the stabilizing plate 16. Further, the projector 1 having a large weight on the positioning plate 15.
, The entire base 13 is pressed against the installation surface G, and the entire screen box 12 is placed without swinging. Thereby, the screen 11 stands up without swinging along the vertical direction Z with respect to the installation surface G, and can continue to project the projected image clearly without blurring.

Then, after the use of the screen unit 10 is finished, the pedestal 13 including the positioning plate 15 and the stabilizing plate 16 is accommodated in the pedestal accommodating portion 14 of the screen box 12 so that an unnecessarily large space is not occupied. It can be kept compact.

As described above, when the projector 1 is used to project an image, the screen box 1
2, the projector 13 is mounted on the screen 11 in a correct position (a clear image and a projection with no distortion or blur) by simply placing the projector 1 in contact with the regulating member 17 of the positioning plate 15. Position). Therefore, as in the past,
There is no need to move the position of the projector while viewing the state of the projected image, and the projector can be set in a short time.

In addition, the projector need not be provided with measuring means for measuring the relative position and orientation with respect to the screen, and the projector can be quickly set with a simple configuration at low cost.

For example, it is preferable to prepare a dedicated positioning plate corresponding to each projector model so that the positioning plate 15 is positioned at an optimal image projection position with respect to the screen 11. Alternatively, the attachment position of the restriction member 17 may be finely adjusted for each projector model.

FIG. 5 is a side cross-sectional view showing another example of the projector screen unit of the present invention. In the screen unit (projector screen unit) 20, a regulating member 27 made of a protrusion is provided on the positioning plate 25 of the base 23. An engagement hole 2 a is formed on the bottom of the projector 2 so as to be fitted with the protruding regulating member 27.

Even in the screen unit 20 having such a configuration, the projector 2 only needs to be placed on the positioning plate 25 so that the protruding regulation member 27 and the engagement hole 2a are fitted in use. Thus, the projector 2 can be easily installed at a position where the projection light R can project a clear image onto the screen 21 supported by the screen box 22 at a projection angle θ2.

FIG. 6 is a side sectional view showing another example of the projector screen unit of the present invention. In this screen unit (projector screen unit) 30, a regulating member 37 including a screw 37 a and a screw receiver 37 b is provided on the positioning plate 35 of the pedestal 33. A screw hole 3a that fits into the screw 37a is formed on the side surface of the projector 3 near the screen 31.

In the screen unit 30 having such a configuration, the screw hole 3a fitted to the screw 37a can be moved up and down by turning the screw 37a. Thereby, the projector 3 can be moved up and down only on the screen side, and the projection angle θ3 of the projection light R can be finely adjusted. Further, by making the screw hole 3a an elongated hole extending in the X direction, the distance between the projector 3 and the screen 31 supported by the screen box 32 can be finely adjusted.

Fig.7 (a) is side sectional drawing which shows another example of the screen unit for projectors of this invention, and FIG.7 (b) is the front top view. The screen unit (projector screen unit) 40 includes a rack 49 that houses a screen box 42, a pedestal 43, the projector 4, and the like.

As a result, the projector 4 is fitted with the regulating member 47 and placed at a predetermined position, and the screen 41 supported by the screen box 42 is also unfolded at the predetermined position.
By using such a rack 49, the screen 41, the projector 4 and the like can be installed in a compact and attractive manner. Further, other devices related to the projector 4, such as the audio device 51 and the speaker 52, can be accommodated in a compact manner, and a projector system with a uniform appearance can be obtained.

It is an external appearance perspective view which shows the screen unit for projectors of this invention. It is an external appearance perspective view which shows the screen unit for projectors of the state which accommodated the screen. It is a top view which shows the screen unit for projectors of this invention. It is side surface sectional drawing which shows the screen unit for projectors of this invention. It is sectional drawing which shows other embodiment of the screen unit for projectors of this invention. It is sectional drawing which shows other embodiment of the screen unit for projectors of this invention. It is sectional drawing which shows other embodiment of the screen unit for projectors of this invention, and a front view.

Explanation of symbols

1 Projector 10 Screen unit (Screen unit for projector)
11 Screen 12 Screen box 13 Base 17 Restriction member

Claims (6)

A screen that reflects the light projected from the projector;
A screen box for accommodating the screen movably between a deployment position and a storage position;
A pedestal attached to the screen box and formed with a regulating member that abuts a part of the projector and regulates the installation position of the projector with respect to the screen;
A projector screen unit characterized by comprising: The projector screen unit according to claim 1, wherein the pedestal further includes an adjustment mechanism capable of adjusting an angle of the projector with respect to an installation surface and a distance of the projector from the screen. 3. The projector screen unit according to claim 1, wherein a pedestal accommodating portion that accommodates the pedestal is provided inside the screen box. 4. The pedestal, due to its own weight when the projector is placed,
4. The projector screen unit according to claim 1, wherein the projector screen unit is pressed against an installation surface. The regulating member is a screw for coupling to the projector by screwing;
5. The projector screen unit according to claim 1, wherein the projector screen unit is a screw hole. The projector screen unit according to any one of claims 1 to 5, further comprising a rack for accommodating the screen box, the pedestal, and the projector.

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