JP2006337628A - Roll type screen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roll type screen achieving the improvement of the visibility of a displayed picture and also the improvement of convenience. <P>SOLUTION: The roll type screen 8 has a screen body 100 equipped with a first screen surface 110 used as a surface to be attached other than used for a picture projected from a picture projection device, and a second screen surface 120 used as a projection surface for the picture projected from the picture projection device, and formed as a flexible sheet. The second screen surface is constituted of a surface to display the picture by reflecting it, or a surface to display the picture by transmitting it after forming it on the surface. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a roll screen on which an image from an image projection apparatus is projected.

  Conventionally, a screen is installed in a conference room or the like, and is used by projecting a projection image from the projector onto a screen using a projector as an image projection device. Further, in stores and the like, the screen is used for advertising and production by projecting a projection image of a projector as an image projection device. In addition, as shown in Patent Document 1, a screen provided with a mechanism for removably attaching the screen to a transparent door or window has been devised. Also, with respect to the screen, a screen that separates the projection light and external light of the projector in the light incident direction (for example, a screen that reflects in the relationship between the incident direction and the reflection direction like a mirror, a screen that returns light in the incident direction, etc. ), And a screen that uses wavelength and polarized light to divide the screen and prevent contrast degradation and visibility degradation due to reflection of projection light and external light from the projector when the screen is used in a bright place.

JP-T-2004-533636

  However, most of the screens reflect the projected image from the image projecting device and visually recognize it, and when the screen is used in a bright place, even if the above-described screen is used, the projector as the current image projecting device. There is a problem that sufficient visibility cannot be obtained with the emitted light beam.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a roll screen that improves the visibility of displayed images and improves convenience.

  In order to achieve the above-described object, a roll screen according to the present invention includes a first screen surface used as an adherend surface other than an image projected from an image projection device, and projection of an image projected from the image projection device. A flexible and sheet-like screen body having a second screen surface used as a surface is provided.

  According to such a roll-type screen, for example, when the brightness around the roll-type screen is different (for example, daytime and nighttime) due to having the screen body including the first screen surface and the second screen surface. Further, by using either the first screen surface or the second screen surface, it is possible to improve the visibility of the displayed image. Moreover, by having two surface parts of a 1st screen surface and a 2nd screen surface, two surface parts can be used properly and the convenience of a roll-type screen improves.

  In the roll screen, the screen body preferably performs printing on the first screen surface.

  According to such a roll-type screen, an image (attached) is printed (adhered) on the first screen surface used as the adherend surface as an image display object other than the image from the image projection device (for example, a projector). Still images). Thereby, visibility can be improved when the periphery of the roll type screen is bright (for example, in the daytime).

  In the roll screen, the screen body preferably has an image display member for displaying an image on the first screen surface.

  According to such a roll type screen, an image (by attaching) an image display member as a display object for displaying an image other than the image from the projector is attached to (attached to) the first screen surface used as the adherend surface. Still images). Thereby, for example, when the periphery of the roll type screen is bright (for example, daytime), the visibility can be improved.

  In the roll screen, the screen main body has a transparent surface portion on the first screen surface, an image display member is pasted on the back side of the transparent surface portion, and the image display member can be visually recognized through the transparent surface portion. It is preferable.

  According to such a roll type screen, the image display member can be prevented from being soiled by the transparent surface portion on the first screen surface, and the display quality can be maintained.

  In the roll screen, it is preferable that the screen main body has a holding portion that holds the image display member in a replaceable manner on the first screen surface.

  According to such a roll-type screen, the image display member can be replaced as many times as necessary because the first screen surface has the holding portion and holds the image display member in a replaceable manner. Therefore, the convenience of the roll screen is improved.

  In order to achieve the above-described object, the roll type screen of the present invention has a flexible and sheet-like screen body, and the screen body is projected from the above-described first screen surface and the image projection device. It has the 2nd screen surface which permeate | transmits and can visually recognize an image, It is characterized by the above-mentioned.

  According to such a roll-type screen, the first screen surface is used for display by attaching another image display object as an adherend surface other than the image projected from the image projection apparatus (for example, a projector). be able to. Further, by using the second screen surface, an image projection device (for example, a projector) can be installed on the back side of the screen main body, and an image can be projected (rear projection) and displayed. Therefore, it is possible to realize a roll screen that can provide a degree of freedom in the installation position of the image projection apparatus (for example, a projector), and the convenience of the roll screen can be improved.

  In order to achieve the above-described object, the roll screen of the present invention has a flexible and sheet-like screen main body, and the screen main body can be viewed without transmitting an image projected from the image projection device. And a projection surface portion that can be seen through the projection surface portion.

  According to such a roll-type screen, an image projection device (for example, a projector) is projected from the front side (front projection) onto the screen body and displayed on the projection surface, or projected from the back side (rear projection). Display on the projection plane. Therefore, it is possible to realize a roll screen that can provide a degree of freedom in the installation position of the image projection apparatus (for example, a projector), and the convenience of the roll screen can be improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)

  FIG. 1 is a schematic perspective view using a roll-type screen according to the first embodiment of the present invention. FIG. 1A shows a case where an image projection apparatus projects and displays an image on a screen body. FIG. 1B is a perspective view when the image projection apparatus displays an image by printing without projecting an image on the screen body. The configuration of the roll screen 8 and the projector 5 as an image projection apparatus will be schematically described with reference to FIG.

  As shown in FIG. 1, the roll screen 8 forms an image display system 1 with a projector 5. The projector 5 includes a light amount detection unit 30 (see FIG. 2) as a detection unit that detects the amount of external light, a determination unit that determines the amount of light with respect to a predetermined value based on the light amount detected by the light amount detection unit 30, A projection control unit that controls the necessity of image projection based on a determination result in the determination unit; and a transmission unit 20 that transmits a signal instructing switching of the screen surface of the screen body 100 to the roll screen 8. Yes. Details will be described later.

  As shown in FIG. 1A, the roll screen 8 includes an area (second screen surface 120) used for projecting an image (including a moving image and a still image) from the projector 5, and FIG. As shown in FIG. 3, the screen main body 100 is flexible and has a sheet body 100 having a region (first screen surface 110) used for displaying an image (still image) by printing. The roll type screen 8 includes a screen accommodating portion 200 that accommodates the screen body 100 and a screen rotating mechanism portion 300 that switches to either the first screen surface 110 or the second screen surface 120.

  The screen accommodating unit 200 includes a winding mechanism unit 220 that winds up the screen main body 100 and an unwinding mechanism unit 210 that performs unwinding. The winding mechanism unit 220 is configured by accommodating a winding member 225 and a winding spring 226 inside a winding-side casing 221 constituting the exterior. The unwinding mechanism unit 210 is configured by accommodating an unwinding member 215 inside the unwinding side casing 211 constituting the exterior. Details will be described later.

  In the winding mechanism unit 220, the screen body 100 is wound up by rotating the winding member 225 by the restoring force of the winding spring 226. By performing this operation, in the first embodiment, the first screen surface 110 moves to a position used for display, and the screen surface of the screen body 100 is switched (state shown in FIG. 1B).

  In the unwinding mechanism part 210, when the screen rotation mechanism part 300 is driven, the unwinding member 215 rotates and the screen body 100 rotates. Thereby, the 1st screen surface 110 of the screen main body 100 is switched to the 2nd screen surface 120 (state shown to Fig.1 (a)). Details will be described later.

  FIG. 1A shows a state in which a projected image from the projector 5 is projected onto the second screen surface 120 of the screen body 100 and an image is displayed. In the first embodiment, this state is a case where the determination unit determines that the amount of light at the light amount detection unit 30 of the projector 5 is smaller than a predetermined value, and in particular, the operation of the image display system 1 at night. Indicates the state. The second screen surface 120 is used as a projection surface for projecting a projection image from the projector 5.

  FIG. 1B shows a state in which the projector 5 does not project an image but displays an image printed on the first screen surface 110 of the screen body 100. In the first embodiment, this state is a case where the determination unit determines that the amount of light in the light amount detection unit 30 of the projector 5 is greater than a predetermined value, and in particular, the operation of the image display system 1 in daytime. Indicates the state. The first screen surface 110 is used as an adherend surface other than the image projected from the projector 5 by attaching (printing in the first embodiment) another image display object. Note that images (still images) by printing include images and characters.

  The image display system 1 according to the first embodiment switches the screen surface between the first screen surface 110 and the second screen surface 120 during daytime and nighttime, and displays an image on the screen body 100 as described above.

  FIG. 2 is a schematic configuration diagram of the image display system according to the first embodiment. The configuration and operation of the roll-type screen 8 and the projector 5 constituting the image display system 1 will be described with reference to FIG.

First, the configuration and operation of the projector 5 will be described.
The projector 5 includes an A / D converter 10, a video decoder 11, an image processing unit 12, an LCD (Liquid Crystal Display) driving unit 13, an audio processing unit 15, an amplification unit 16, a speaker 17, a power source 18, a lamp driving unit 19, and an optical unit. The system 40 includes a light amount detection unit 30, a transmission unit 20, and a control unit 14. The optical system 40 includes a lamp 41 that is a light source, a liquid crystal light valve 42 that modulates the emitted light emitted from the lamp 41, a projection lens 43 that magnifies and projects the modulated emitted light, and the like. The

Next, the operation of the projector 5 will be described with reference to the operation of each part.
The A / D converter 10 converts PC image data and audio data input to the PC image signal input terminal into digital signals. The PC image data is output to the image processing unit 12, and the audio data is input to the audio processing unit 15. Is output. The video decoder 11 converts the image data and audio data input to the video signal input terminal into digital signals, and then the image data is separated into R, G, and B color signals and output to the image processing unit 12 for audio. The data is output to the voice processing unit 15.

  The image processing unit 12 performs frame rate conversion and scaling processing and various image corrections on the image data input from the A / D converter 10 or the video decoder 11. The image processing unit 12 also performs various image corrections such as brightness adjustment, contrast adjustment, and gamma correction processing on the image data. The image data processed in this way is output to the LCD drive unit 13 as a projection image signal.

  The LCD drive unit 13 outputs and drives each liquid crystal light valve 42 based on the projection image signal input from the image processing unit 12. The liquid crystal light valve 42 in the first embodiment uses a three-plate type liquid crystal panel.

  The audio processing unit 15 converts audio data that is a digital signal input from the A / D converter 10 or the video decoder 11 into an analog signal. The audio data converted into the analog signal is amplified by the amplifying unit 16 and emitted as sound by the speaker 17.

  The power source 18 is connected to an external outlet through a power cable, and supplies power to the lamp driving unit 19 in addition to supplying power to all necessary parts of the projector 5 using an AC power source. The lamp driving unit 19 turns on / off the lamp 41 according to an instruction from the control unit 14. In the first embodiment, the lamp 41 uses an ultrahigh pressure mercury lamp as a discharge-type light source.

  The control unit 14 performs overall control of the entire operation of the projector 5.

  In the first embodiment, the light amount detection unit 30 uses an optical sensor that detects light in the visible light region, and the optical sensor is connected to the projector 5 main body by a cable. The optical sensor is installed in the vicinity where the roll screen 8 is installed, and detects the amount of external light around the roll screen 8.

  The light amount detection unit 30 detects the amount of external light and outputs the value to the control unit 14. The control unit 14 functions as a determination unit that determines whether the input light amount from the light amount detection unit 30 is larger or smaller than a predetermined value (threshold value). The control unit 14 also functions as a projection control unit that controls whether or not to project an image based on the determination result of the determination unit. Then, the control unit 14 transmits a signal for switching to either the first screen surface 110 or the second screen surface 120 based on the determination result of the determination unit via the transmission unit 20 included in the projector 5. 8 is transmitted.

  In the first embodiment, when the determination unit determines that the light amount detected by the light amount detection unit 30 is larger than the threshold value, the control unit 14 performs control not to project an image as a projection control unit. At this time, the control unit 14 transmits a signal for switching to the first screen surface 110 to the roll screen 8 via the transmission unit 20. In the first embodiment, the state in which the amount of light is determined to be greater than the threshold value corresponds to the daytime state.

  In the first embodiment, when the determination unit determines that the light amount detected by the light amount detection unit 30 is smaller than the threshold, the control unit 14 performs control to project an image as the projection control unit. At this time, the control unit 14 transmits a signal for switching to the second screen surface 120 to the roll screen 8 via the transmission unit 20. In the first embodiment, the state in which the amount of light is determined to be smaller than the threshold value corresponds to the night state.

Next, the configuration and operation of the roll screen 8 will be described.
The roll-type screen 8 includes a screen body 100, a screen storage unit 200, and a screen rotation mechanism unit 300.

  The screen body 100 includes a first screen surface 110 and a second screen surface 120. The screen accommodating unit 200 includes an unwinding mechanism unit 210 and a winding mechanism unit 220. The winding mechanism unit 220 is configured by accommodating a winding member 225 and a winding spring 226 in the inside surrounded by the winding-side casing 221. The unwinding mechanism unit 210 is configured to include an unwinding member 215 inside the space surrounded by the unwinding side casing 211.

  The winding mechanism 220 is configured such that the tip of the screen main body 100 and the tip of the winding spring 226 for winding are connected to the winding member 225, and the winding member 225 is rotated by the restoring force of the winding spring 226. Thus, an operation of winding the screen main body 100 is performed.

  In the unwinding mechanism 210, the leading end of the screen body 100 is connected to the unwinding member 215, and a gear train (not shown) for rotating the unwinding member 215 is fixed to one end of the unwinding member 215. . And the screen rotation mechanism part 300 is connected to the end surface of the unwinding mechanism part 210, and the screen drive part 52 which the screen rotation mechanism part 300 has, and the gear train of the unwinding member 215 are connected.

  The screen rotation mechanism unit 300 includes a receiving unit 50, a screen control unit 51 as a switching control unit, a screen driving unit 52 as a switching unit, and a power supply 55. The screen drive unit 52 includes a motor 53, a gear train 54, and the like.

  The power supply 55 is connected to an external outlet through a power cable, and supplies power to the screen drive unit 52 in addition to supplying AC power to all necessary parts of the roll screen 8.

Next, the operation of the roll type screen 8 will be described.
Here, for convenience of explanation, the first screen surface 110 is currently being used with respect to the screen main body 100 of the roll type screen 8, and the second screen surface 120 is transmitted from the transmission unit 20 of the projector 5. A description will be given on the assumption that a signal for switching is transmitted.

  The receiving unit 50 receives a switching signal to the second screen surface 120 transmitted from the transmitting unit 20 of the projector 5. Then, the received signal is output to the screen control unit 51. The screen control unit 51 outputs a signal for switching the first screen surface 110 to the second screen surface 120 to the screen driving unit 52 based on the input signal.

  The screen drive unit 52 drives the motor 53 based on a signal from the screen control unit 51. When the motor 53 is driven, the gear train 54 starts to rotate in conjunction with it. The gear train 54 meshes the gear included in the unwinding member 215 of the unwinding mechanism 210 with the gear train 54 by a clutch mechanism (not shown), and rotates the unwinding member 215 by the rotation of the gear train 54.

  As the unwinding member 215 rotates, the screen main body 100 whose tip is connected to the unwinding member 215 is wound around the unwinding member 215. When the motor 53 is operated for a predetermined time under the control of the screen control unit 51, the screen driving unit 52 stops the operation of the motor 53. Thereby, the screen body 100 is switched from the first screen surface 110 to the second screen surface 120.

  With the above operation, the first screen surface 110 of the screen body 100 is switched to the second screen surface 120 in conjunction with the start of projection of the projector 5. Thereby, the image projected by the projector 5 can be projected on the second screen surface 120.

  When the screen main body 100 is wound around the unwinding member 215 by the rotation of the unwinding member 215, the winding member 225 of the winding mechanism unit 220 is also rotated. As a result, the take-up spring 226 that connects the leading end to the take-up member 225 is also driven and rotated, and as a restoring force that serves as a driving force for switching the second screen surface 120 of the screen body 100 to the first screen surface 110. It will store energy.

  Next, a signal for switching from the transmitting unit 20 of the projector 5 to the first screen surface 110 when the second screen surface 120 is currently being used for the screen body 100 of the roll screen 8. A description will be made on the assumption that the state is transmitted.

  The receiving unit 50 receives a switching signal to the first screen surface 110 transmitted from the transmitting unit 20 of the projector 5. Then, the received signal is output to the screen control unit 51. The screen control unit 51 outputs a signal for switching the second screen surface 120 to the first screen surface 110 to the screen driving unit 52 based on the input signal.

  The screen drive unit 52 performs an operation of releasing the meshing between the gear train 54 and the gear included in the unwinding member 215 of the unwinding mechanism unit 210 by the clutch mechanism. Thereby, the unwinding member 215 becomes rotatable.

  If it will be in this state, in order to return the winding spring 226 by the restoring force stored in the winding spring 226 which connects a front-end | tip part to the winding member 225, rotation will start. In conjunction with the operation, the winding member 225 rotates. As a result, the screen body 100 whose tip is connected to the winding member 225 is wound around the winding member 225, and the second screen surface 120 is switched to the first screen surface 110.

  With the above operation, the second screen surface 120 of the screen body 100 is switched to the first screen surface 110 in conjunction with the projection stop of the projector 5. As a result, an image printed on the first screen surface 110 is displayed.

According to the first embodiment described above, the following effects can be obtained.
(1) The roll-type screen 8 shown in the first embodiment has a screen body 100 including a first screen surface 110 and a second screen surface 120. Therefore, for example, when the brightness around the roll screen 8 is bright (when the amount of light is large), the projector 5 does not perform projection and rolls due to the operation of the projector 5 and the operation of the associated roll screen 8. The surface portion of the expression screen 8 is switched to the first screen surface 110 used as the adherend surface. When the brightness around the roll screen 8 is dark (when the amount of light is small), the projector 5 performs projection by the operation of the projector 5 and the operation of the associated roll screen 8, and the roll screen 8. Is switched to the second screen surface 120 as a projection surface. Therefore, according to such a roll type screen 8, for example, when the brightness around the roll type screen is different by having the screen body 100 including the first screen surface 110 and the second screen surface 120 ( By using either the first screen surface 110 or the second screen surface 120 during the daytime and the nighttime, for example, the visibility of the displayed image can be improved. Further, since the two screen portions of the first screen surface 110 and the second screen surface 120 are provided, the two surface portions can be used properly, and the convenience of the roll screen 8 is improved.

(2) According to the first embodiment, since the roll screen 8 can be displayed by printing an image on the first screen surface 110 used as the adherend surface, in the daytime when the amount of light is large (bright). The visibility can be improved without requiring a projection image from the projector 5.
(Second Embodiment)

  FIG. 3 is a cross-sectional view of the roll screen according to the second embodiment of the present invention in which an image display member is attached to the first screen surface. The case where the first screen surface 110 is used as an adherend surface other than an image projected from a projector will be described with reference to FIG.

  As shown in FIG. 3, an image display member 500 is provided on the surface side (viewing surface side) of the first screen surface 110, and in the second embodiment, a flexible sheet-like substrate is used for advertisement. A printed advertisement 510 on which an image is printed is pasted with a double-sided adhesive tape 71 serving as a pasting member 70.

  In the first embodiment, the first screen surface 110 displays an image by printing. However, in the second embodiment, a printed advertisement 510 is pasted and displayed on the first screen surface 110. The configuration of the image display system 1 is different only in the above configuration, and the operation is the same. The printed advertisement 510 attached to the first screen surface 110 is wound by the operations of the winding member 225 and the unwinding member 215.

According to the second embodiment described above, the following effects can be obtained in addition to the effect (1) in the first embodiment.
(1) According to the second embodiment, the roll-type screen 8 is displayed with the printed advertisement 510 attached to the first screen surface 110. Therefore, during the daytime when the amount of light is large (bright), Visibility can be improved without requiring a projected image.
(Third embodiment)

  FIG. 4 is a cross-sectional view of an image display member held by a holding member in a roll screen according to a third embodiment of the present invention. A case where the first screen surface 110 is used as an adherend surface other than an image projected from a projector will be described with reference to FIG.

  As shown in FIG. 4, on the surface side (viewing surface side) of the first screen surface 110, a sheet member 61 that is flexible and transparent and forms a sheet is provided as a holding portion 60 at both lateral ends. The three directions of the lower end and the lower end are affixed to the first screen surface 110, and the upper side is installed in a form not affixed. The printed advertisement 510 as the image display member 500 is held by being inserted into a space formed in a bag shape by the first screen surface 110 and the sheet member 61 and is displayed via the sheet member 61. Further, the printed advertisement 510 is replaced by being inserted and removed.

  The configuration of the image display system 1 is different only in the above configuration, and the operation is the same. The sheet member 61 affixed to the first screen surface 110 and the printed advertisement material 510 to be held are wound by the operations of the winding member 225 and the unwinding member 215.

According to the third embodiment described above, the following effect can be obtained in addition to the effect (1) in the first embodiment.
(1) According to the third embodiment, the roll type screen 8 is a bag of the printed advertisement 510 with the first screen surface 110 and the sheet member 61 using the sheet member 61 as the holding unit 60 on the first screen surface 110. Therefore, in a daytime when the amount of light is large, a projected image from the projector 5 is not required and visibility can be improved.

(2) According to the third embodiment, the roll-type screen 8 can protect the printed advertisement 510 from the external dust by the sheet member 61 even if the roll-type screen 8 is installed in a store, for example. Moreover, since it can replace | exchange easily by inserting / removing the printed advertising matter 510, the convenience of the roll-type screen 8 improves.
(Fourth embodiment)

  FIG. 5 is a cross-sectional view of a roll screen according to a fourth embodiment of the present invention, which has a transparent first screen surface and an image display member attached to the first screen surface. The case where the first screen surface 111 is used as an adherend surface other than the image projected from the projector will be described with reference to FIG.

  As shown in FIG. 5, the 1st screen surface 111 in 4th Embodiment is comprised using the transparent base material with the 1st screen surface 110 used for 1st Embodiment-3rd Embodiment. That is different. Thereby, the printed advertising material 520 as the image display member 500 has a double-sided adhesive tape 72 that becomes the pasting member 70 in a state where the printing surface of the printed advertising material 520 faces the back side (back side) of the first screen surface 111. Is attached. The printed advertisement 520 is visually recognized through the transparent first screen surface 111.

  The configuration of the image display system 1 is different only in the above configuration, and the operation is the same. The printed advertisement 520 attached to the first screen surface 111 is wound by the operation of the winding member 225 and the unwinding member 215.

According to 4th Embodiment mentioned above, the following effects other than the effect (1) in 1st Embodiment are acquired.
(1) According to the fourth embodiment, the roll-type screen 8 is configured such that the first screen surface 111 is formed of a transparent base material, and the printed side of the printed advertisement 520 is the back side (back side) of the first screen surface 111. ) And is displayed via the first screen surface 111. Thereby, in the daytime when the amount of light is large, visibility can be improved without requiring a projection image from the projector 5. In addition, the printed surface (display surface) of the printed advertisement 520 can be protected by the first screen surface 111, and the display quality of the printed advertisement 520 can be maintained.
(Fifth embodiment)

  FIG. 6 is a cross-sectional view of the roll screen according to the fifth embodiment of the present invention, which has a transparent first screen surface and the image display member is held by a holding portion. The case where the first screen surface 111 is used as an adherend surface other than the image projected from the projector 5 will be described with reference to FIG.

  As shown in FIG. 6, on the back side (back side) of the transparent first screen surface 111, a flexible and transparent sheet-like sheet member 62 is formed as a holding unit 60 at both lateral ends. The three directions of the lower end and the lower end are affixed to the first screen surface 111, and the upper side is not attached. The printed advertisement 520 as the image display member 500 is held and displayed by being inserted into a space formed in a bag shape by the first screen surface 111 and the sheet member 62. The printed advertisement 520 is visually recognized through the transparent first screen surface 111. Further, the printed advertisement 520 is replaced by being inserted and removed.

  The configuration of the image display system 1 is only different from the above, and the operation is the same. The sheet member 62 affixed to the first screen surface 111 and the printed advertisement material 520 held are wound by the operations of the winding member 225 and the unwinding member 215.

According to the fifth embodiment described above, the following effect can be obtained in addition to the effect (1) in the first embodiment.
(1) According to the fifth embodiment, the roll type screen 8 forms a bag-like space by sticking the sheet member 62 to the back side (back side) of the transparent first screen surface 111, and print advertisement The object 520 is inserted into the space in which the object 520 is formed, and an image is displayed through the first screen surface 111. Thereby, in the daytime when the amount of light is large, visibility can be improved without requiring a projection image from the projector 5.

(2) According to the fifth embodiment, the roll-type screen 8 protects the printed advertisement 520 from external dust even when the roll-type screen 8 is installed in a store, for example, by the first screen surface 111 and the sheet member 62. The display quality of the printed advertisement 520 can be maintained. Moreover, since it can replace | exchange easily by inserting / removing the printed advertising matter 520, the convenience of the roll-type screen 8 improves.
(Sixth embodiment)

  FIG. 7 is a schematic perspective view using a roll screen according to a sixth embodiment of the present invention. The configuration of the roll screen 8 and the projector 6 as an image projection apparatus will be schematically described with reference to FIG.

  As shown in FIG. 7, the roll screen 8 and the projector 6 constitute an image display system 2. The image display system 2 shown in the sixth embodiment is different from the image display system 1 shown in the first embodiment as follows.

  In the image display system 1, a projector 5 that can project a front image is used as a projector for projecting an image, and the second screen surface 120 that constitutes the screen main body 100 of the roll screen 8 is composed of a flexible reflective screen. ing. On the other hand, in the image display system 2, the projector 6 that projects an image uses the projector 6 capable of rear projection, and the second screen surface 121 that constitutes the screen body 100 of the roll type screen 8 has flexibility. (Not shown) and a transmissive screen surface having a Fresnel lens (not shown). Since other configurations and operations are the same as those of the image display system 1, description thereof is omitted.

  As shown in FIG. 7, the transmissive second screen surface 121 is projected by the projector 6 from the back side of the second screen surface 121 and forms an image on the second screen surface 121 as an image. Thereby, an image can be visually recognized from the surface side of the second screen surface 121.

  In addition, the structure of the 1st screen surface 110 in 6th Embodiment is comprised similarly to the structure used in 1st Embodiment to 5th Embodiment.

According to the sixth embodiment described above, the following effects are obtained in addition to the effects from the first embodiment to the fifth embodiment.
(1) According to the sixth embodiment, the roll screen 8 has the second screen surface 121 that allows the image projected from the projector 6 to pass through and can be viewed, and is installed on the back side of the screen body 100. An image can be projected (rearly projected) from the projector 6 to be displayed. Thereby, visibility can be improved by the projected image from the projector 6 at night when the amount of light is small. In addition, since the projector 6 is installed on the back side of the screen main body 100, when the roll screen 8 is installed at a storefront, the installation position of the projector 6 can be given a degree of freedom. With such a roll screen 8, the convenience of the roll screen 8 is improved.
(Seventh embodiment)

  FIG. 8 is a schematic perspective view using a roll screen according to a seventh embodiment of the present invention. The configuration of the roll screen 9 and the projector 7 as an image projection device will be schematically described with reference to FIG.

  As shown in FIG. 8, the roll screen 9 and the projector 7 constitute an image display system 3. The image display system 3 shown in the seventh embodiment is different from the image display system 1 shown in the first embodiment in that the configuration of the roll type screen is different.

The configuration and operation of the roll screen 9 used in the seventh embodiment will be described.
The roll-type screen 9 includes a screen body 600 formed in a roll shape and a rotation mechanism unit 700. The screen main body 600 has a first screen surface 610 used as an adherend surface other than an image projected from the projector 7 and a second screen surface 620 used as a projection surface of an image projected from the projector 7. is doing. The first screen surface 610 and the second screen surface 620 are flexible and have a sheet shape. The rotation mechanism unit 700 includes a first rotation member 710 and a second rotation member 720 each having a cylindrical shape. In the seventh embodiment, the rotation mechanism unit 700 corresponds to a switching unit that switches between the first screen surface 610 and the second screen surface 620 of the screen body 600.

  The roll type screen 9 has a structure in which a first rotating member 710 and a second rotating member 720 apply tension to the inside of the screen body 600 formed in a roll shape, and guides and holds the screen body 600. .

  When switching between the first screen surface 610 and the second screen surface 620 of the roll-type screen 9, the user grasps both end portions of one screen surface (for example, the first screen surface 610), and the desired screen. Switching is performed by pulling down (or pulling up) until the surface can be visually recognized. Since the roll-type screen 9 does not have the screen rotation mechanism 300 that the roll-type screen 8 has, the first screen surface 610 and the second screen surface 620 are manually switched.

  The projector 7 is different in that the projector 7 does not include the transmission unit 20 included in the projector 5 used in the first embodiment. Other configurations and operations are the same as those of the projector 5. Therefore, the projector 7 detects the amount of external light by the light amount detection unit 30, and the control unit 14 as the determination unit and the projection control unit determines the magnitude of the predetermined threshold. Controls to project an image and not to project if it is large. However, the roll screen 9 cannot be driven based on the determination result.

  The configuration of the first screen surface 610 in the seventh embodiment is the same as the configuration used in the first to fifth embodiments.

According to the seventh embodiment described above, the following effects can be obtained.
(1) The roll screen 9 shown in the seventh embodiment has a screen body 600 including a first screen surface 610 and a second screen surface 620. Therefore, for example, when the brightness around the roll screen 9 is bright (when the amount of light is large), the projector 7 does not perform projection and the user does not perform projection by the operation of the projector 7 and the operation of the roll screen 9 by the user. Switches the surface portion of the roll-type screen 9 to the first screen surface 610 used as the adherend surface. When the brightness around the roll screen 9 is dark (when the amount of light is small), the projector 7 performs projection by the operation of the projector 7 and the operation of the roll screen 9 by the user. The surface portion of the expression screen 9 is switched to the second screen surface 620 as a projection surface. Therefore, according to such a roll-type screen 9, for example, when the brightness around the roll-type screen 9 is different due to having the screen body 600 including the first screen surface 610 and the second screen surface 620. By using one of the first screen surface 610 and the second screen surface 620 (for example, daytime and nighttime), the visibility of the displayed image can be improved. Further, by having two surface portions of the first screen surface 610 and the second screen surface 620, the two surface portions can be used properly, and the convenience of the roll screen 9 is improved.

  (2) According to the seventh embodiment, the roll-type screen 9 can print an image on the first screen surface 610 and can hold and display a printed advertisement so that it can be pasted and replaced. (2) and the effects of the second to fifth embodiments.

  In addition, this invention is not limited to embodiment mentioned above, A various change, improvement, etc. can be added. A modification will be described below.

  (Modification 1) The roll screen 8 in the first to sixth embodiments includes the first screen surfaces 110 and 111 and the projectors 5 and 6 that are used as projection surfaces of images projected from the projectors 5 and 6. The second screen surfaces 120 and 121 are used as adherend surfaces other than the image projected from. However, the present invention is not limited to this, and a projection surface portion that can be viewed without transmitting an image projected from the projector and a projection surface portion that can be viewed through can be configured. According to such a roll-type screen, the projector is projected from the near side (front projection) on the screen body in the same manner as the second screen surface 120 in the first to fifth embodiments, and is reflected on the projection surface portion. Thus, an image can be displayed. Further, similarly to the second screen surface 121 in the sixth embodiment, the projector can be projected from the back side (rear projection) to form an image on the projection surface, and the image can be transmitted and displayed. As a result, it is possible to realize a roll screen that can provide flexibility in the installation position of the projector, and it is possible to improve the convenience of the roll screen.

  (Modification 2) In Modification 1, the screen body of the roll type screen includes a projection surface portion that can be seen without transmitting an image projected from the projector, and a projection surface portion that can be seen through. ing. However, the present invention is not limited to this, and a surface used as an adherend surface other than the image projected from the projector may be provided in the same manner as the first screen surfaces 110 and 111 in the first to sixth embodiments. . As a result, both front projection and rear projection projectors can be used, and when the brightness around the roll-type screen 8 is different (for example, daytime and nighttime), the screen surfaces are properly used as described above. As a result, the visibility of the displayed image can be improved.

  (Modification 3) In the image display systems 1 and 2 in the above-described embodiment, the roll screen 8 includes a screen rotation mechanism unit 300 such as a reception unit 50 that receives a signal from the transmission unit 20 of the projectors 5 and 6. ing. However, the present invention is not limited to this, and the roll screen 8 includes at least the first screen surfaces 110 and 111 used as adherend surfaces other than the images projected from the projectors 5 and 6 and the images projected from the projectors 5 and 6. It is sufficient to have a flexible and sheet-like screen main body 100 including the second screen surfaces 120 and 121 used as the projection surfaces. Thereby, for example, when the brightness around the roll-type screen 8 is different (for example, daytime and nighttime), by using one of the first screen surfaces 110 and 111 or the second screen surfaces 120 and 121, Visibility can be improved. Further, by having two surface portions of the first screen surfaces 110 and 111 and the second screen surfaces 120 and 121, the two surface portions can be used properly, and the convenience of the roll screen 8 is improved.

  (Modification 4) In the said 2nd Embodiment and 4th Embodiment, although the double-sided adhesive tapes 71 and 72 are used as the sticking member 70, it becomes not only this but the adhesion side of the printed advertisement 510,520. A peelable adhesive may be applied to the surface. Moreover, a hook-and-loop fastener etc. may be installed in the 1st screen surfaces 110 and 111 and the printed advertising material 510 and 520, and both may adhere.

  (Modification 5) In the sixth embodiment, the roll type screen 8 has a transmissive second screen surface 121 configured to include a diffusion plate and a Fresnel lens, and uses a projector 6 capable of rear projection. Thus, an image is formed on the second screen surface 121 as an image. However, the present invention is not limited to this, and a diffuser plate and a Fresnel lens need not be used as long as the projection image from a projector capable of rear projection can be formed on the second screen surface 121. Thereby, a simple roll type screen is realized.

  (Modification 6) In the seventh embodiment, the projector 7 does not have the transmission unit 20, and the roll screen 9 does not have the screen rotation mechanism unit 300 included in the roll screen 8. However, similarly to the first embodiment, the projector 7 includes a transmission unit that transmits a signal for switching between the first screen surface 610 and the second screen surface 620, and the reception unit that receives the signal on the roll screen 9. Or a screen rotating mechanism for automatically switching the screen surface. Thereby, the convenience of the image display system 3 is improved.

  (Modification 7) In the first to sixth embodiments, the screen body 100 has a first screen surface and a second screen surface. However, the present invention is not limited to these two surface portions, and may be configured with a plurality of surface portions.

  (Modification 8) In the above embodiment, the installation position of the light quantity detection unit 30 is set in the vicinity of the roll type screen, but is not limited to this position, and may be a place where a difference in light quantity between daytime and nighttime can be detected. Anywhere. The light amount detection unit 30 uses an optical sensor that detects light in the visible light range, but is not limited to this, and any sensor type can be used as long as it can detect the difference in light amount between daytime and nighttime. Does not matter. Therefore, each sensor can be used.

  (Modification 9) In the first to sixth embodiments, the projectors 5 and 6 include the light amount detection unit 30 and the transmission unit 20, and the control unit 14 determines a light amount determination unit and an image. It functions as a projection control unit that controls whether or not projection is necessary. The roll screen 8 has a receiving unit 50. However, the present invention is not limited thereto, and the light amount detection unit and the transmission unit are configured on the roll screen 8. Then, a determination unit that determines the amount of light, a control unit that functions as a projection instruction unit that instructs the projectors 5 and 6 to project whether or not to project an image based on the determination result, and a transmission unit that transmits a signal from the projection instruction unit And configure. In addition, the projectors 5 and 6 constitute a receiving unit that receives a signal transmitted from the transmitting unit of the roll screen 8, and the control unit 14 of the projectors 5 and 6 controls projection based on the signal. That's fine.

  (Modification 10) In the embodiment described above, the configuration of the screen accommodating unit 200 constituting the roll screen 8 and the configuration of the screen driving unit 52 of the screen rotation mechanism unit 300 are not limited to the above embodiment. Any change or improvement may be made as appropriate without departing from the scope of the present invention.

  (Modification 11) In the embodiment described above, the projectors 5, 6 and 7 use discharge-type ultrahigh pressure mercury lamps as light sources. However, the present invention is not limited to this, and a lamp using an LED (Light Emitting Diode) may be used.

  (Modification 12) In the above embodiment, the projectors 5, 6, and 7 are transmissive liquid crystal projectors. However, the present invention is not limited to this, and a projector adopting a DLP (registered trademark) (Digital Light Processing) method, a LCOS (Liquid Crystal On Silicon) method that is a reflective liquid crystal method, or the like may be used.

  (Modification 13) In the embodiment and the modification, the projector has been described as an example of the image projection apparatus. However, the present invention is not limited to this, and the roll screen of the present invention can be used as long as it can project an image such as an OHP (OverHead Projector) as an image projection device, and the same effects as described above can be obtained. Is possible.

FIG. 1 is a schematic perspective view using a roll screen according to a first embodiment of the present invention, and FIG. 1A is a perspective view when an image projection apparatus projects and displays an image on a screen body. FIG. 1B is a perspective view when the image projection apparatus displays an image by printing without projecting an image on the screen body. It is a schematic block diagram of an image display system. In the roll-type screen which concerns on 2nd Embodiment of this invention, it is sectional drawing which adhered the image display member to the 1st screen surface. It is sectional drawing by which the image display member was hold | maintained by the holding member in the roll type screen which concerns on 3rd Embodiment of this invention. In the roll-type screen which concerns on 4th Embodiment of this invention, it has a transparent 1st screen surface, It is sectional drawing which adhered the image display member to the 1st screen surface. In the roll-type screen which concerns on 5th Embodiment of this invention, it has a transparent 1st screen surface, It is sectional drawing by which the image display member was hold | maintained by the holding part. It is a schematic perspective view using the roll-type screen which concerns on 6th Embodiment of this invention. It is a schematic perspective view using the roll-type screen which concerns on 7th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1-3 ... Image display system, 5-7 ... Projector, 8, 9 ... Roll type screen, 10 ... A / D converter, 11 ... Video decoder, 12 ... Image processing part, 13 ... LCD drive part, 14 ... Control part DESCRIPTION OF SYMBOLS 15 ... Audio | voice processing part, 16 ... Amplifying part, 17 ... Speaker, 18 ... Power supply, 19 ... Lamp drive part, 20 ... Transmitting part, 30 ... Light quantity detection part, 40 ... Optical system, 41 ... Lamp, 42 ... Liquid crystal light Valve, 43 ... projection lens, 50 ... receiving unit, 51 ... screen control unit, 52 ... screen drive unit, 53 ... motor, 54 ... gear train, 55 ... power supply, 60 ... holding unit, 61, 62 ... sheet member, 70 ... Sticking member, 71, 72 ... Double-sided adhesive tape, 100 ... Screen body, 110, 111 ... First screen surface, 120, 121 ... Second screen surface, 200 ... Screen housing portion, 210 ... Unloading mechanism 211, unwinding housing, 215 unwinding member, 220 unwinding mechanism, 221 unwinding housing, 225 unwinding member, 226 unwinding spring, 300 screen rotation Mechanical part, 500 ... Image display member, 510, 520 ... Print advertisement, 600 ... Screen main body, 610 ... First screen surface, 620 ... Second screen surface, 700 ... Rotating mechanism part, 710 ... First rotating member 720 ... a second rotating member.

Claims (7)

  A first screen surface used as an adherend surface other than an image projected from the image projection device and a second screen surface used as a projection surface for an image projected from the image projection device. A roll type screen comprising a screen-shaped screen main body. The roll screen according to claim 1,
The roll main screen is characterized in that the screen body performs printing on the first screen surface. The roll screen according to claim 1,
The roll type screen, wherein the screen body has an image display member for displaying an image on the first screen surface. The roll screen according to claim 1,
The screen body has a transparent surface portion on the first screen surface,
A roll-type screen, wherein the image display member is attached to a back side of the transparent surface portion, and the image display member is visible through the transparent surface portion. The roll screen according to claim 3 or 4,
The roll-type screen, wherein the screen main body has a holding portion for holding the image display member in a replaceable manner on the first screen surface. It has a flexible and sheet-like screen body,
The said screen main body has the 1st screen surface as described in any one of Claims 1-5, and the 2nd screen surface which permeate | transmits and can visually recognize the image projected from an image projector. A roll-type screen characterized by being configured. It has a flexible and sheet-like screen body,
The roll main body includes a projection surface portion that can be viewed without transmitting an image projected from the image projection device, and a projection surface portion that can be viewed through the screen. .

Images