JP7113502B2 - Telescopic screen device for projection - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescopic screen device for projection, in which the size and shape of the screen surface can be freely changed according to user's preference and usage environment.

Conventionally, as a projection screen that can be easily installed according to the conditions of use, there has been known a projection screen that uses a stretchable synthetic fiber material for the screen body, and whose shape can be changed by stretching the screen body with a stretching member ( For example, see Patent Document 1).

Utility Model Registration No. 3081156

As for the projection screen described in Patent Document 1, the size of the screen body can be changed by improving the stretchability. That is, by changing the tensile strength of the extension member, the size of the screen body can be adjusted and installed according to the place of use.

However, when the stretchability is improved as described above, the deformation of the screen body increases in the vicinity of the extension members. For this reason, as in the conventional screen device shown in FIG. 7, the surface of the screen main body is larger than the area (installation area M0 shown in FIG. 7) where the extension members such as magnets are installed on the installation surface of the installation object. , a large rectangular area (screen area S0 shown in FIG. 7) that can be used as a screen could not be secured.

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, the present invention seeks to solve the problem by providing a telescopic projection telescopic device that can secure a large area for use as a screen with respect to the area where the extension members are installed when adjusting the size of the screen. The point is to provide a screen device.

A telescopic screen device for projection according to the present invention comprises a screen body which is configured to be stretchable and in which a screen region, which is a region on which an image can be projected, is formed, and a screen body provided at a plurality of locations on the peripheral edge of the screen body. and an extension member having a variable interval, wherein the extension member is adhered to the installation surface of the object to be installed at a different interval while the screen body is in an extended state, and the screen body is A telescopic screen device for projection that can be used by changing the screen area to different sizes by adjusting the size and shape and fixing it to the installation surface, wherein the extension member in the screen body At least one of the gap portions is formed as a bulging portion that bulges outward from the screen body when the screen body is not stretched, and the bulging portion expands the screen body. In this state, the screen body can be arranged inside the screen body with respect to the line connecting the extension members .

Further, in the telescopic screen device for projection, a gap is formed between the installation surface and the screen body by forming the attachment surface of the extension member to be attached to the installation surface so as to protrude from the screen body. may be formed.

Further, in the telescopic screen device for projection, the extension member may be composed of an adhesive portion having a magnetic force.

Further, in the telescopic screen device for projection, when the screen body is extended, the screen body is formed in a substantially rectangular shape, and the extension members are positioned at the four corners of the screen body so that the screen body has four projections. At least one of the gap portions of the extension member may be formed to bulge outward from the screen body when the screen body is not stretched.

According to the telescopic screen device for projection according to the present invention, when adjusting the size of the screen body, it is possible to secure a larger area to be used as the screen than the area in which the extension members are installed.

The front view which shows the 1st usage state of the telescopic screen apparatus for projection. FIG. 2 is a cross-sectional view taken along the line XX in FIG. 1; FIG. 2 is a front view showing a contracted state of the telescopic screen device for projection; The front view which shows the 2nd usage state of the telescopic screen apparatus for projection. The front view which shows the 3rd usage condition of the telescopic screen apparatus for projection. The front view which shows the use condition of the telescopic screen apparatus for projection which concerns on another embodiment. The front view which shows the use condition of the telescopic screen apparatus for projection which concerns on a prior art.

Hereinafter, a telescopic screen device for projection (hereinafter simply referred to as "screen device") 1 according to one embodiment of the present invention will be described in detail with reference to the accompanying drawings. is intended to include all embodiments that meet the requirements of the claims. Further, in this specification, the direction from the screen device 1 in the installed state toward the installation surface such as a wall surface (the depth direction of the paper surface in FIG. 1) is defined as the rear side, and the opposite direction (the front direction of the paper surface in FIG. 1) is defined as the rear side. forward. In addition, the screen surface that can be visually recognized from the front is a screen surface that can be visually recognized at least temporarily or partially by a person on the front side of the installed screen device 1, and can also be visually recognized from other directions. It also includes things that can be done.

A screen device 1 according to the present embodiment will be described with reference to FIGS. 1 to 5. FIG. FIG. 1 shows a first usage state in which the screen device 1 is used with the screen body 2 stretched to the minimum extent that wrinkles do not occur on the screen surface. FIG. 2 shows a state of the screen device 1 when the screen body 2 is contracted (a state where the screen body 2 is not extended). FIG. 4 shows a second usage state in which the screen device 1 is used with the screen body 2 extended so that the screen surface becomes moderately large. FIG. 5 shows a third usage state in which the screen device 1 is used with the screen body 2 extended so as to maximize the screen surface. The size of the screen surface in the third usage state of this embodiment can be about 1.6 times the size of the screen surface in the first usage state.

As shown in FIG. 1, the screen device 1 includes a screen body 2 which is a film-like member configured to be stretchable, and adhesive portions 3 which are extension members provided at four locations on the periphery of the screen body 2 . , provided. As shown in FIGS. 1, 4, and 5, in the screen device 1, when the screen body 2 is extended, the screen body 2 is formed into a substantially rectangular shape, and the adhered portions 3 are formed at the four corners of the screen body 2. formed to be located.

As shown in FIG. 1, the screen device 1 has the screen body 2 stretched and the adhering portion 3 is adhered to the installation surface P of the whiteboard B to be installed. Thereby, the size and shape of the screen body 2 are adjusted, and the screen device 1 is fixed to the installation surface P (see FIGS. 4 and 5). At this time, part or all of the front surface of the screen body 2 functions as the screen surface of the screen device 1 .

The screen device 1 can freely change the size and shape of the screen main body 2 by changing the position of the sticking portion 3 on the installation surface P. As shown in FIG. In the present embodiment, a rectangular area on the installation surface P to which the sticking portion 3 is attached is referred to as an "installation area M". In the screen device 1 shown in FIG. 1, an installation area M1 is formed on an installation surface P. As shown in FIG.

In this embodiment, the screen main body 2 is configured as a reflective screen that displays an image projected from the front. As a result, an image is projected onto the screen surface of the screen body 2 from the front by a projector such as a projector, and the image is displayed on the surface of the screen surface. In this embodiment, a rectangular area on the screen surface on which an image can be projected is referred to as a "screen area S". In the screen device 1 shown in FIG. 1, a screen area S1 is formed on the screen surface of the screen main body 2 .

The screen main body 2 has stretchability as a whole and is formed by stacking a plurality of screen sheets (three sheets in this embodiment) whose front side is white. The screen sheet is formed to have high stretchability by weaving synthetic fibers such as polyester fibers and nylon fibers. An edge portion 4 is formed by folding back the screen sheet on the peripheral edge portion of the screen body 2 . It is also possible to make the back side of the screen sheet black and form the black edge portion 4 so as to surround the screen main body 2 by making the back side of the screen sheet black and by folding back the peripheral portion so that the back side fabric appears on the front side. In this case, the image projected on the screen surface can be projected more clearly by the black edge portion 4 .

Here, the screen main body 2 should just have elasticity. In the screen device 1 according to the present embodiment, the screen main body 2 has elasticity in all of the vertical, horizontal and diagonal directions, so that it can be deformed into any shape. However, it is also possible to make the screen body 2 stretchable only in one or two directions, up and down, left and right, or obliquely, so that the shape of the expanded screen body 2 is adapted to the purpose of use. .

Also, the screen body 2 may have other configurations as long as it can project at least the image projected from the projector. For example, the screen main body 2 may be configured so that an image projected on the back side is projected on the front side. Further, the screen main body 2 may be configured such that it is possible to perform a touch operation on the screen sheet so that writing or the like can be directly performed on the image displayed on the screen surface. Furthermore, the screen surface may be partially or wholly transparent. A second screen surface or a surface for displaying information such as advertisements may be provided on the back side of the screen main body 2 . The screen main body 2 is configured to have air permeability. Therefore, for example, even when the screen device 1 is attached between two whiteboards, a clear image can be projected without the screen surface being shaken by the wind.

As shown in FIG. 2, the sticking portion 3 is formed to protrude from the screen main body 2 toward the installation surface P side. The sticking portion 3 is composed of a surface member 3a and a back surface member 3b. The attaching portion 3 is assembled to the screen body 2 by joining the surface member 3a and the back member 3b with the peripheral portion of the screen body 2 sandwiched between the surface member 3a and the back member 3b.

The sticking portion 3 has a magnet 3m housed inside the back member 3b. The sticking surface 3p formed on the back surface of the sticking portion 3 is stuck to a magnetically stickable place such as a whiteboard, a blackboard, a partition, etc. by the magnetic force of the magnet 3m. As a result, since any member having magnetism can function as the installation surface P, the usability of the screen device 1 can be improved.

In the present embodiment, as shown in FIG. 2, the sticking surface 3p of the sticking portion 3 to be stuck to the installation surface P is formed so as to protrude rearward from the screen body 2. As shown in FIG. Thereby, a gap D is formed between the installation surface P and the screen body 2 .

As described above, since the sticking surface 3p of the sticking portion 3 protrudes rearward from the screen body 2, a gap D is formed between the installation surface P and the screen body 2 when the screen device 1 is installed. Therefore, even if there is a small protrusion on the surface of the installation surface P, the screen main body 2 does not interfere with the protrusion, and a flat and clean screen surface can be formed. Further, when removing the screen device 1 from the installed state, the user can insert his or her hand into the gap D between the screen body 2 and the installation surface P, so that the removal operation can be easily performed. Further, since the screen body 2 protrudes forward from the installation surface P, the image projected on the screen surface becomes a three-dimensional screen surface distinguished from the wall surface, making the image easy to see.

In the screen device 1 according to the present embodiment, as shown in FIG. 3, there are gaps (portions corresponding to the four sides of the screen surface) of the screen main body 2 between the four adhered portions 3 when the screen main body 2 contracts (the screen main body 2 is not stretched), a bulging portion 2a that bulges outward from the screen body 2 is formed. That is, as shown in FIG. 3, the screen body 2 is configured to have a substantially elliptical shape when it is not stretched.

By configuring the screen device 1 as described above, the installation area M2 is made larger than the installation area M1 in the first usage state, as shown in the second usage state in FIG. is widened and the deformation of the screen main body 2 in the vicinity of the stuck portions 3 becomes large, the bulging portion 2 a is located between the stuck portions 3 . Therefore, it is possible to prevent the screen area S2 from becoming small even if the installation area M2 is enlarged.

Furthermore, in the screen device 1, as shown in the third usage state of FIG. Even when the size is maximized, the bulging portion 2a is positioned between the sticking portions 3. - 特許庁Therefore, even if the setting area M3 is maximized, it is possible to prevent the screen area S3 from becoming small.

As described above, according to the screen device 1 according to the present embodiment, even when the installation region is enlarged and the screen main body 2 is extended, the screen relative to the installation region is larger than that of the screen device that does not include the bulging portion 2a. It is possible to ensure a large area size. That is, even when the installation area is limited, a large screen area can be secured.

In the present embodiment, since the bulging portion 2a is greatly stretched, the thickness of the bulging portion 2a is formed to be 25 to 30% larger than that of other portions. Further, by stacking a plurality of screen sheets when forming the screen body 2, the reflectance is not lowered when the screen body 2 is extended.

According to the screen device 1 according to the present embodiment, the bulging portions 2a are formed in all (four places) of the gaps between the four adhering portions 3, but the bulging portions 2a are formed only on the short sides. Alternatively, it may be configured to be formed only on the long sides. Alternatively, the bulging portion 2a may be formed only at one of the gaps between the four sticking portions 3. As shown in FIG. That is, if the bulging portion 2a is formed along the direction in which the screen body 2 expands and contracts in at least one of the gaps of the adhered portions 3, the screen area when the screen body 2 is extended is increased. becomes possible.

In addition, in the screen device 1, since the sticking surface 3p of the sticking portion 3 protrudes rearward from the screen body 2, a gap D exists between the installation surface P and the screen body 2 when the screen device 1 is installed. It is formed. For this reason, as shown in the first use state in FIGS. 1 and 2, when the installation area M1 is small and the interval between the sticking portions 3 is narrow, the bulging portion 2a of the screen body 2 is positioned behind the screen body 2. The screen surface can be kept beautiful by letting it hang down in the gap D located.

In addition, in the screen device 1 in the above-described embodiment, the sticking portions 3 are provided at four locations on the screen main body 2, but the placement locations and the number of sticking portions are not limited to such a configuration. That is, like the screen device 11 according to another embodiment shown in FIG. 6, it is also possible to further provide one auxiliary sticking portion 13 on each intermediate portion of the short sides (and/or long sides) of the screen body 2 . be. As a result, even when the screen body 2 is expanded, the screen body 2 is pulled by the auxiliary sticking portions 13 on the short sides, so that the screen body 2 can be dented toward the center of the screen. In other words, even if the setting area M11 is enlarged as shown in FIG. can be done. Therefore, even if the installation area M11 is maximized, the reduction of the screen area S11 can be further suppressed.

In the screen device 1 described above, the screen main body and the screen surface are configured in a rectangular shape, but the shape of the screen main body is not limited to this. There may be one, and the shape may be changed according to the display image or application. Further, the extension member is not limited to the sticking portion 3 having a magnetic force, and may be any structure as long as it can extend the screen body. In other words, the stretching member is not limited to one that uses magnetic force, and various members such as suction cups, repetitively attachable and detachable double-sided tapes, clamping members, and the like can be appropriately selected or used in combination.

Furthermore, the screen device 1 is not limited to the installation location as described above, and can be installed in any location as long as it can be installed by the sticking means. It may be wound around a structured object, or may be attached along an uneven shape such as stairs.

1 Screen device (extendable screen device for projection)
2 screen main body 2a bulging portion
3 Adhering part (extension member) 3a Surface member
3b back member 3m magnet
3p sticking surface 4 edge
11 Screen device (extendable screen device for projection according to another embodiment)
13 Auxiliary pasting part B Whiteboard (object to be installed)
P Installation surface D Gap
M Installation area S Screen area

Claims (4)

a screen body that is configured to be expandable and that forms a screen area that is an area where an image can be projected;
stretching members provided at a plurality of locations on the peripheral edge of the screen body and having variable intervals between them;
While the screen body is stretched, the extension members are attached to the installation surface of the object to be installed at different intervals, and the size and shape of the screen body are adjusted and fixed to the installation surface. A telescopic screen device for projection that can be used by changing the screen area to a different size by
at least one of the gaps of the extension members in the screen body is formed as a bulging portion that bulges outward from the screen body when the screen body is not stretched;
A telescopic screen device for projection, wherein the bulging portion can be arranged inside the screen body with respect to a line connecting the extension members in a state in which the screen body is extended. 2. A gap is formed between said installation surface and said screen body by forming an attachment surface of said extension member to be attached to said installation surface so as to protrude from said screen body. Telescopic screen device for projection. 3. The telescopic screen device for projection according to claim 1, wherein said extension member is composed of an adhesive portion having magnetic force. When the screen body is extended, the screen body is formed in a rectangular shape, and the extension members are positioned at four corners of the screen body,
At least one of the gap portions of the four stretching members in the screen body is formed to bulge outward from the screen body when the screen body is not stretched. Item 4. The telescopic screen device for projection according to any one of Item 3.

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