JPH10228066A - Roll-type reflection screen device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll-type reflection screen device where a projecting length from a wall surface is made small even in the case of installing it on the upper side of the window of a room. SOLUTION: A screen main body 13 having a screen surface 14 where a projected video is reflected is changeable so as to be in a storing state where it is wound up roll-like and in a use state where a winding end is pulled out from the storing state, and a pressing spring 16 intervenes so as to wind up the body 13 with the screen surface 14 outside. In an installing state to the wall surface by making the screen surface 14 face a front surface, the distance of the winding end of the screen main body from the wall surface 7 is made larger than that in the case of inward winding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll type reflection screen device.

[0002]

2. Description of the Related Art A projection type video projector includes a screen 2 provided on the front of a housing 1 as shown in FIG.
A rear projection type for projecting an image from the rear side via a mirror 3 and a front projection type for projecting an image toward a reflective screen device 5 provided separately from the housing 4 as shown in FIG. And exists.

[0003] The rear projection type is used as a stationary type because its housing 1 is large, whereas the front projection type is easy to install and transport. Therefore, the market as a home theater for general households is expected. ing.

The conventional reflection type screen device 5 includes a stationary type screen device as shown in FIG. 6B and a roll type reflection screen device 6 which is wound up and accommodated as shown in FIGS. 7 and 8. doing.

[0005] The conventional roll-type reflective screen device 6 comprises:
At the time of use, it is attached to the upper part of the wall surface 7 at the installation location, and as shown in FIG. 8A, the end 8 of the winding is pulled out downward as shown by the imaginary line, and is projected on the screen surface 9. .

The used screen device 6 is wound up to the retracted position by the action of the biasing spring interposed at the winding start end 10 by further pulling out the winding end 1 in the pull-out direction.

[0007]

However, in such a conventional configuration, when a curtain rail is installed on the wall surface 7, the end 8 of the winding cannot be pulled out downward. As shown in FIG. 8 (b), when the device is installed so as to avoid the window of the room or above the window 11 of the room, as shown in FIG. It is necessary to attach to the wall surface 7 via the spacer 13, and there is a problem that the length of projection L from the wall surface 7 becomes large.

An object of the present invention is to provide a roll-type reflective screen device in which the length of projection L from the wall surface 7 can be made smaller than before, even when it is installed above a window in a room.

[0009]

The roll-type reflective screen device of the present invention is characterized in that an urging spring is interposed so as to wind up with the screen surface outside.

According to the present invention, the length of the projection from the wall surface can be reduced even when installed above the window of the room.

[0011]

According to a first aspect of the present invention, there is provided a roll-type reflective screen device wherein a screen main body having a screen surface for projecting a projected image is wound up in a roll shape, and a winding end is drawn out of the stored state. And a biasing spring interposed so as to wind up with the screen surface outside.

According to this configuration, since the screen is wound with the screen surface facing outward, the distance from the wall surface at the end of winding of the screen body is smaller in the state of installation on the wall surface with the screen surface facing the front than in the case of inner winding. Leave.

According to a second aspect of the present invention, there is provided a roll type reflection screen device according to the first aspect, wherein the screen main body is wound on at least one of the front side and the rear side of the screen main body on both sides in the winding direction of the screen main body. A projection is formed along the direction.

According to this structure, the inner and outer sides of the rolled-up screen main body are in contact with each other via the convex portion, and a gap is formed between the inner and outer peripheral sides, so that the outer peripheral side is formed on the screen surface. Back side does not touch.

According to a third aspect of the present invention, there is provided a roll-type reflective screen device according to the first aspect, wherein a cover curtain covering the outer peripheral surface of the roll body wound up with the screen surface outside is continuously provided at the winding end end of the screen main body. It is characterized by the following.

According to this configuration, the screen surface exposed at the outermost periphery of the rolled-up screen main body is covered with the cover curtain. According to a fourth aspect of the present invention, in the roll type reflection screen device according to the third aspect, at least one of the front side and the back side of the cover curtain on both sides in the winding direction of the screen main body extends along the winding direction of the screen main body. A convex portion is formed.

According to a fifth aspect of the present invention, in the roll type reflection screen device according to the first to fourth aspects, a screen supporting portion for supporting a winding start end of the screen main body is attached to a wall surface of an installation place via a spacer. It is characterized by the following.

According to a sixth aspect of the present invention, there is provided a roll-type reflective screen device according to any one of the first to fourth aspects, wherein the screen supporting portion for supporting the winding start end of the screen main body is moved closer to or away from the wall surface of the installation location. And mounted on a wall surface of the installation place via a slidable spacer.

According to this configuration, the spacer is slid in a direction approaching the wall surface when not in use.
In use, the spacer is slid in a direction away from the wall surface.

According to a seventh aspect of the present invention, in the roll type reflection screen device, the screen main body having a screen surface on which a projected image is projected is changed between a storage state in which the screen is wound up in a roll shape and a use state in which the winding end is pulled out from the storage state. A possible roll-type reflective screen device, wherein at least one of the front side and the back side of the screen main body on both sides in the winding direction of the screen main body has a projection formed along the winding direction of the screen main body. It is characterized by the following.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
It will be described based on. (Embodiment 1) FIGS. 1 and 2 show (Embodiment 1).

In this roll type reflection screen device, a screen surface 14 having a high reflectance is formed on one surface of a screen main body 13, and a starting end (start of winding) of the screen main body 13 is connected to a shaft 15.

Both ends of the shaft 15 are attached to a screen support 17 via biasing springs 16 so as to be rotatable around the axis of the shaft 15. The urging spring 16 has a wrap-around spring (not shown) interposed between the shaft 15 and the screen supporting portion 17 so that the urging spring 16 acts to raise the screen surface 14 to the outside. . Reference numeral 18 in FIG. 1 is a cover mounted on the screen support 17 so as to cover the upper surface and the front surface.

The screen support 17 is attached to the wall 7 of the installation place via a slidable spacer 19. The spacer 19 includes a movable metal fitting 19 a attached to the back surface of the screen support 17 and a fixed metal fitting 19 b attached to the wall surface 7. Elongated holes 19c are respectively formed in the upper and lower surfaces of the fixed-side metal member 19b, and protrusions 19d formed on the upper and lower surfaces of the movable-side metal member 19a engage with the elongated holes 19c of the fixed-side metal member 19b, respectively. The screen support part 17 and the movable metal fitting 19a are shown in FIG.
2 (a), it is slidable between a storage position close to the wall 7 at the installation location and a use position separated from the wall 7 at the installation location as shown in FIG. 2 (b).

With this configuration, the spacer 19 is used to avoid the curtain rail 12 when the reflective screen device is mounted above the window 11 at the installation location. Since it is slidable to the storage position, the length of protrusion from the wall surface 7 can be reduced by moving the storage position.

Further, since the screen body 13 is wound up around the shaft 15 with the screen surface 14 facing outward by the action of the biasing spring 16, only the size of the screen body 13 that has been wound up is equivalent to the diameter of the conventional screen body. As shown in FIG.
The projecting length at the use position can be surely reduced as compared with the case where the is wound up.

(Embodiment 2) FIGS. 3 and 4A show (Embodiment 2). This is not a specific problem when the screen main body 13 is wound up with the screen surface 14 outside as in (Embodiment 1).
3, the back surface of the screen body 13 and the screen surface 14 come into contact with each other, and the screen body 13
There is a problem that the dirt attached to the rear surface of the first surface causes the screen surface 14 to be stained.

In this (Embodiment 2), projections 20 thicker than the screen surface 14 are formed on both sides of the surface of the screen main body 13 at least along the sides of the screen surface 14.

In the state shown in FIG. 3 in which the screen main body 13 is wound up, the surface of the screen main body 13 comes into contact with the back surface R1 of the screen main body 13 via the projection 20 so that the screen surface 14 is Since it does not contact the back surface R1 of the main body 13, the screen surface 14 can be maintained in a good state without contamination for a long period of time.

Here, the projections 20 are formed on both sides of the surface of the screen body 13 as shown in FIG. 4A, but the projections 20 are formed as shown in FIG. A similar effect can be expected by forming it on both sides of the back surface of the screen body 13 or forming it on both sides of the front surface of the screen body 13 and both sides of the back surface of the screen body 13 as shown in FIG. As shown in FIG. 4C, when the projections 20 are formed on both sides of the front surface of the screen main body 13 and both sides of the back surface of the screen main body 13, the thickness of the projection 20 is substantially (1).
/ 2).

In addition to the projections 20 shown in FIGS. 4A to 4C, the projections 20 are formed on one side of the surface of the screen body 13 as shown in FIG. The same effect can be expected only by forming the protrusion 20 on the opposite side of the back surface of the main body 13.

FIG. 3 shows an example in which the film is wound up with the screen surface outside, but the same applies to the case of winding up with the screen surface inside. (Embodiment 3) FIG. 5 shows (Embodiment 3).

Screen surface 1 as in (Embodiment 1)
When the screen body 13 is rolled up with the screen 4 facing outward, a part of the screen surface 14 is exposed in the retracted storage state. In this (Embodiment 3), FIG.
As shown in (a), a cover curtain 21 is continuously provided at the end of the winding of the screen body 13.

With this configuration, in the retracted state as shown in FIG. 5B, the screen curtain 14 at the end of the winding is covered by the cover curtain 21, so that the screen surface 14 is exposed in the retracted state. Is eliminated, and the screen surface 14 can be maintained in a good state without contamination for a long period of time.

(Embodiment 4) The above (Embodiment 3)
Is not provided with the projections 20 as seen in the screen main body 13 of (Embodiment 2), but the cover curtain 21 is provided on the screen surface 14 at the end of winding.
The back curtain R2 of FIG.
By forming the projections 20 in the same manner as in the case of the screen main body 13 shown in (a) to (d), it is possible to avoid the problem of the screen surface 14 being stained by the cover curtain 21.

[0036]

According to the first aspect of the present invention, a screen body having a screen surface for projecting a projected image is provided.
It can be changed to a stored state where the roll is wound up and a use state where the winding end is pulled out from the stored state, and an urging spring is interposed so that the screen surface is rolled up with the screen surface outside, so that the screen surface is turned outside. Since it was wound up, in the installation state on the wall surface with the screen surface facing the front, the distance from the wall surface at the end of winding of the screen body was farther than in the case of inward winding, from the wall surface when installed above the curtain rail Can be shortened.

According to a second aspect of the present invention, in the first aspect, at least one of the front surface side and the rear surface side of the screen main body on both sides in the winding direction of the screen main body along the winding direction of the screen main body. As a result, the inner and outer sides of the rolled-up screen body are in contact with each other via the convex portion, and a gap is formed between the inner and outer peripheral sides, so that the screen surface is the rear surface on the outer peripheral side. Do not touch Therefore, the inner peripheral side of the screen main body does not come into contact with the screen surface, and the screen surface can be maintained in a good state without being stained for a long period of time.

According to the third aspect of the present invention, in the first aspect, a cover curtain that covers the outer peripheral surface of the roll body wound up with the screen surface outside is continuously provided at the winding end end of the screen body. The screen surface exposed to the outermost periphery of the screen body when it is rolled up with the outer side is covered with a cover curtain, which can protect the screen surface in the stored state, and keeps the screen surface in a good condition without contamination for a long period of time. Can be maintained.

According to a fourth aspect of the present invention, in the third aspect, at least one of the front side and the rear side of the cover curtain on both sides in the winding direction of the screen main body extends along the winding direction of the screen main body. As a result, the cover curtain abuts on both sides of the winding end of the screen main body via the protrusion, and a gap is formed between the cover curtain and the screen surface, so that the cover curtain does not contact. Therefore, it is possible to maintain the screen surface in a good state without contamination for a long period of time.

According to the configuration of claim 5, according to claims 1 to
In Claim 4, since the screen supporting portion for supporting the winding start end of the screen main body is attached to the wall surface of the installation location via the spacer, the winding end of the screen main body is wound by turning the screen surface outside, and the end of the screen main body is positioned at the installation location. It can be separated from the wall surface, and when it is installed above the curtain rail, the length of the spacer can be shortened.

According to the configuration of claim 6, according to claims 1 to
In claim 4, the screen support portion for supporting the winding start end of the screen main body is attached to the wall surface of the installation location via a spacer slidable in a direction approaching and separating from the wall surface of the installation location. By wrapping the screen outside, the end of the screen body can be separated from the wall surface of the installation location.If the screen body is installed above the curtain rail, the length of the spacer can be reduced. By sliding in the direction approaching the wall surface, the protruding length from the wall surface can be shortened.

According to the seventh aspect of the present invention, a roll capable of changing a screen main body having a screen surface on which a projected image is projected into a rolled-up storage state and a use state in which the winding end is pulled out from the storage state. A reflective screen device, wherein at least one of the front side and the back side of the screen main body on both sides in the winding direction of the screen main body, a convex portion is formed along the winding direction of the screen main body, so that the screen surface When the screen body is rolled up with the outside or inside, the inner and outer peripheral sides abut via the convex part, and a gap is formed between the screen and the screen surface. Condition can be maintained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part of a roll-type reflective screen device according to a first embodiment of the present invention.

FIG. 2 is a side view of the embodiment when it is moved to a storage position and a use position.

FIG. 3 is a perspective view of a main part of a second embodiment of the present invention.

FIG. 4 is a sectional view of the screen main body of the embodiment and a sectional view of another example.

FIG. 5 is a side view of a use state and a completed winding state according to the third embodiment of the present invention.

FIG. 6 is a configuration diagram of a conventional rear projection type and front projection type video projector.

FIG. 7 is a perspective view showing a usage form of a front projection type video projector.

FIG. 8 is a side view showing an installation state of a conventional roll type reflection screen device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 13 Screen main body 14 Screen surface 15 Shaft 16 Urging spring 17 Screen support part 18 Cover 19 Spacer 19a Movable metal fitting 19b Fixed metal fitting 20 Convex part 21 Cover curtain

Claims (7)

[Claims] 1. A screen main body having a screen surface on which a projected image is projected can be changed between a stored state in which the screen is wound up in a roll shape and a use state in which the end of winding is drawn out of the stored state, and the screen surface is disposed outside. Roll-type reflective screen device with an urging spring interposed so as to wind up. 2. The roll according to claim 1, wherein at least one of the front side and the back side of the screen main body on both sides in the winding direction of the screen main body has a projection formed along the winding direction of the screen main body. Reflective screen device. 3. The roll-type reflection screen device according to claim 1, wherein a cover curtain covering the outer peripheral surface of the roll body wound up with the screen surface outside is provided continuously at the winding end end of the screen main body. 4. The roll according to claim 3, wherein a projection is formed on at least one of the front side and the back side of the cover curtain on both sides in the winding direction of the screen main body along the winding direction of the screen main body. Reflective screen device. 5. The roll-type reflection screen device according to claim 1, wherein a screen supporting portion for supporting a winding start end of the screen main body is attached to a wall surface of an installation place via a spacer. 6. A screen supporting portion for supporting a winding start end portion of a screen main body is mounted on a wall surface of an installation location via a spacer slidable in a direction approaching and separating from the wall surface of the installation location. A roll-type reflective screen device according to claim 4. 7. A roll-type reflection screen device capable of changing a screen main body having a screen surface on which a projected image is projected into a rolled-up storage state and a use state in which the winding end is pulled out from the storage state. A roll-type reflective screen device in which a projection is formed on at least one of the front side and the back side of the screen body on both sides in the winding direction of the screen body along the winding direction of the screen body.