JP2020034713A - Mist screen coupling device and mist screen formation device - Google Patents

Abstract

To prevent a decrease in the density of mist near coupled portions when mist screens are coupled.SOLUTION: Emitted mist M flows upward in a curve along an external surface 3 of a mist screen coupling device 100 and consequently, an end of a mist screen S on the right side of the drawing and an end of a mist screen S on the left side of the drawing are coupled on the upper part of the mist screen coupling device 100. Thus, the mist screens S are beautifully coupled. In a beam portion 2, emitted mist M passes upward, almost as is, and meets the coupled mist screens S. With this configuration, because the mist screens S are beautifully and continuously formed even near an end edge of the mist screen formation device 50, a defect in an image is prevented.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a mist screen connecting device and a mist screen forming device that display a still image or a moving image by projecting light onto a fog screen by a projector or the like.

  Conventionally, a mist display device as disclosed in Patent Document 1 has been proposed. This mist display device is a projection image estimation distortion data calculation unit that calculates distortion of an image projected on a droplet film in order to solve a problem that a projection image is disturbed by disturbance of a droplet film / liquid film due to external wind. And an image conversion matrix generation unit that calculates a correction value for reducing the calculated distortion, and a correction processing unit that corrects an image projected on the droplet film using the calculated correction value. Shall do.

JP 2016-46711 A

  Here, when enlarging the projection area of the mist display, it is conceivable to arrange a plurality of mist displays in a line and connect the droplet films. FIG. 24 shows an example in which mist displays are connected. When the two mist displays 900 are arranged in a line to connect the droplet films, the droplet film of the mist display S is not formed up to the end of the apparatus main body 901, and thus the region 902 where the droplet film does not exist at the connection portion. Is generated, or even if the droplet films merge as they go upward, a streak-like region with a low droplet density is generated, and the uniformity of the droplet density of the mist display S cannot be obtained. There's a problem. The present invention has been made to solve such a problem.

The mist screen connecting device according to the present invention has a state in which one mist screen forming device and another mist screen forming device are arranged close to each other in a direction in which mist screens formed by discharging mist by each mist screen forming device are continuous. In, it is disposed between the edge of the one mist screen forming device and the edge of another mist screen forming device, having a pair of curved surfaces or slopes in the outer vertical direction, the A pair of curved surfaces and inclined surfaces are provided substantially symmetrically with a predetermined interval in the connection direction.

  In the above invention, it is preferable to further have a pair of curved surfaces or inclined surfaces in the inner vertical direction. Further, it is preferable that a pair of rectifying pieces having a curved surface or an inclined surface in the outer vertical direction are provided in a pair, and the rectifying pieces are connected to each other by a beam portion.

The mist screen forming apparatus according to the present invention has a state in which one mist screen forming apparatus and another mist screen forming apparatus are arranged close to each other in a direction in which mist screens formed by discharging mist by each mist screen forming apparatus are continuous. The main body edge of the one mist screen forming device and the main body edge of the other mist screen forming device are opposed to each other, and a curved surface or a slope is provided in the vicinity of the mist discharge port and in the outer vertical direction. Features.

  In the above invention, it is preferable to further have a curved surface or an inclined surface in the inner vertical direction. Further, it is preferable that the curved surface or the inclined surface is provided as a rectifying piece by a beam portion at an edge of a main body which is arranged close to the mist screen forming device.

It is a perspective view which shows the mist screen connection tool which concerns on Embodiment 1 of this invention. It is a side view which shows the mist screen shown in FIG. It is a top view showing the state where the mist screen connecting device was installed in the mist screen forming device. It is explanatory drawing which shows operation | movement of this mist screen connection tool. It is a side view which shows the mist screen connection tool which concerns on Embodiment 2 of this invention. It is a top view which shows the mist screen connection tool shown in FIG. It is a top view showing the state where the mist screen connecting device was installed in the mist screen forming device. It is explanatory drawing which shows operation | movement of this mist screen connection tool. It is a side view which shows the mist screen connection tool which concerns on this invention. It is a top view which shows the mist screen connection tool shown in FIG. It is a top view showing the state where the mist screen connecting device was installed in the mist screen forming device. It is explanatory drawing which shows operation | movement of this mist screen connection tool. It is a side view which shows the mist screen connection tool which concerns on Embodiment 4 of this invention. It is a top view which shows the mist screen connection tool shown in FIG. It is a top view showing the state where the mist screen connecting device was installed in the mist screen forming device. It is explanatory drawing which shows operation | movement of this mist screen connection tool. It is a partial perspective view showing a mist screen forming device according to a fifth embodiment of the present invention. FIG. 18 is a partial side view showing the mist screen forming device shown in FIG. 17. FIG. 18 is a partial plan view showing the mist screen forming device shown in FIG. 17. It is a partial side view showing the mist screen forming device concerning the present invention. FIG. 21 is a partial plan view showing the mist screen forming device shown in FIG. 20. It is explanatory drawing which shows operation | movement of this mist screen forming apparatus. It is explanatory drawing which shows the modification of the mist screen connector of this invention. It is explanatory drawing which shows the example in the case of connecting a mist display. BRIEF DESCRIPTION OF THE DRAWINGS It is a conceptual diagram which shows the mist screen forming apparatus which concerns on this invention, (a) is a front view, (b) is a side view. It is a key map showing the formation mode of the mist screen of the present invention. 1 is a configuration diagram illustrating a mist screen forming device according to Embodiment 1 of the present invention. FIG. 3B is a side view of the mist screen forming device shown in FIG. 3A. It is AA sectional drawing of FIG. A3. It is BB sectional drawing of FIG. A3. It is a partially expanded sectional view of FIG. A5. It is an exploded view of a mist screen forming device, and is a three-view drawing showing a state where an air ejection device was removed from a case. It is an exploded view of a mist screen forming device, and is an appearance view and a sectional view showing a state where a mist guide and an air guide are removed. It is an exploded view of a mist screen formation device, and is an outline view and a sectional view showing a state where a storage room of a mist rectifier was removed. It is an exploded view of a mist screen forming device, and is an outline view and a sectional view showing a state where a middle plate has been removed. It is a channel schematic diagram of a mist screen formation device concerning the present invention. It is sectional drawing and a top view of a guide part. It is a top view which shows the modification of a guide part. It is a conceptual block diagram which shows the mist screen forming apparatus which concerns on Embodiment 2 of this invention. It is a conceptual diagram which shows the mist screen forming apparatus shown in FIG. A15. It is a schematic diagram showing a guide portion, and a schematic diagram showing a form of forming a mist screen. FIG. 9 is a partial configuration diagram illustrating a mist screen forming device according to Embodiment 3 of the present invention. FIG. 19 is a schematic view illustrating a structure of a mist screen formed by the guide unit illustrated in FIG. A18. FIG. 9 is a configuration diagram illustrating a mist screen forming apparatus according to Embodiment 4 of the present invention.

(Embodiment 1)
FIG. 1 is a perspective view showing a mist screen connector according to Embodiment 1 of the present invention. FIG. 2 is a side view (a) and a plan view (b) showing the mist screen shown in FIG. FIG. 3 is a plan view showing a state where the mist screen connector is installed in the mist screen forming device. The mist screen connector 100 has a structure in which a pair of rectifying pieces 1 are connected to each other by a beam portion 2. Each rectifying piece 1 has a fan shape in plan view and a semicircular arc shape in side view. More specifically, each rectifying piece 1 is a gingko leaf-shaped flat plate curved at a predetermined curvature to form a curved surface 3 (outer surface 3) in an outer vertical direction (indicated by an arrow in the drawing) and to rectify the rectifier. The pieces 1 are connected to each other by a straight beam portion 2 and the curved plate-like body has a shape gradually converging and is integrated with the beam portion 2. With such a shape, the curved surfaces 3 of the pair of rectifying pieces 1 are provided substantially symmetrically and at predetermined intervals.

In addition, since each rectifying piece 1 has a plate-like body curved, a curved surface 4 is formed in an inner vertical direction (indicated by an arrow in the drawing). When the mist adheres to the inside of the curved surface 4 to form water droplets, the water droplets flow downward along the curved surface 4.

  The distance between the flow regulating pieces 1 and the flow regulating pieces 1 is determined by an end of the main body 51 of the mist screen forming device 50, specifically, a portion NM where no mist is discharged from the edge 50a of the discharge port to the edge 50b of the main body cover. More than twice. From another viewpoint, when the mist screen forming device 50 is disposed close to, the edge 50b of the discharge port 50c of one mist screen forming device 50A and the edge 50b of the discharge port 50c of the other mist screen forming device 50B. It is larger than the interval. On the other hand, if the distance between the rectifying pieces 1 is too wide, the mist screen will not be connected well. Therefore, the mist screen is appropriately determined according to the size of the mist screen and the like.

  The rectifying piece 1 has a predetermined area and determines the curvature and radius of the mist to be discharged so that the flow of the mist flows along the curved surface 3. In addition, even if mist hits the inner surface 4 and forms dew, the area and shape of the inner surface 4 are determined in detail so that water droplets caused by the dew flow downward along the inner surface 4. . Furthermore, the beam part 2 has a shape having a small cross-sectional area in a direction perpendicular to the mist flow direction so that the mist discharged from the discharge port 50c easily passes through the beam part 2. Preferably, it is in the shape of a bar or a strip that is vertically oriented.

  That is, the rectifying piece 1 needs a predetermined area in order to exhibit a function of bending the mist flowing on the outer surface 3 along the outer surface 3 and flowing the mist upward. In addition, even if the mist that hits the inner side surface 4 forms dew on the surface, the water droplets fall before reaching the beam portion 2, and the beam portion 2 supports the pair of rectifying pieces 1 and almost eliminates the flow of the mist. It has a shaft shape or a plate shape so that it passes without disturbing and does not cause condensation. And the beam part 2 is larger than at least the distance between the edge 50b of the discharge port 50c of the one mist screen forming device 50A and the edge 50b of the discharge port 50c of the other mist screen forming device 50B. Can be arranged over the gap between the edge 50b and the edge 50b. Since no drops are formed in the beam portion 2, even when the gap is located above the gap between the edges 50b, the drops do not fall into the gap. The floor is not wet by water.

  In addition, the beam portion 2 has a function of connecting the straightening pieces 1 to each other to facilitate handling, and also has a function of preventing mist from adhering to form water drops and dropping. If it is, it is not limited to the linear one as shown. Further, a hanging portion may be formed at a connecting portion between the beam portion 2 and the plate-shaped body so that water droplets do not move near the center of the beam portion 2 (not shown).

  FIG. 4 is an explanatory view showing the operation of the mist screen connector. First, two mist screen forming apparatuses 50 are arranged side by side so that the mist screen to be discharged forms a continuous surface. At this time, the main body 51 of one mist screen forming apparatus 50A and the main body 51 of the other mist screen forming apparatus 50B are arranged close to each other and brought into contact with each other, and the discharged mist screens S are arranged close to each other to form one large screen. Connect. Next, the mist screen connector 100 is placed over the discharge port 50c and over the gap between the main body edge 50b of the one mist screen forming device 50A and the main body edge 50b of the other mist screen forming device 50B. Place it so as to straddle it.

  Next, the mist M is discharged from the discharge port 50c. The discharged mist M bends and flows upward along the outer side surface 3 of the mist screen connector 100, and the mist screen S on the right side in the figure and the mist screen S on the left side in the figure above the mist screen connector 100 The ends are connected. Thereby, the mist screen S is connected neatly. Further, in the beam portion 2, the discharged mist M passes upward as it is and joins the connected mist screen S.

With the above configuration, the mist screen S is formed neatly and continuously near the edge of the mist screen forming apparatus 50, so that there is no loss in the image. Furthermore, even when the mist M hits the inner surface 4 of the flow regulating piece 1 and forms dew, water droplets flow along the inner surface 4 of the flow regulating piece 1 and fall into the discharge port 50c (the flow direction of the water droplet is indicated by an arrow in the figure). For this reason, a water drop does not drop on the connecting portion of the mist screen forming device 50.

(Embodiment 2)
FIG. 5 is a side view showing a mist screen connector according to Embodiment 2 of the present invention. FIG. 6 is a plan view showing the mist screen connector shown in FIG. In the mist screen connector 200, two curved plate-like bodies 201 having a semicircular cross section are arranged in a straight line, and the same curved plate-like body 201 is placed on the top and the top of the curved plate-like body 201. Structure. It is preferable that the width of the curved plate-like body 201 is substantially equal to the width of the mist screen S.

  The length of the mist screen connecting device 200 is preferably the length of the end portion of the mist screen forming device 50, specifically, the portion NM where no mist is discharged from the edge 50a of the discharge port 50c to the edge 50b of the main body cover. More than double. From another viewpoint, when the mist screen forming device 50 is disposed close to, the edge 50b of the discharge port 50c of one mist screen forming device 50A and the edge 50b of the discharge port 50c of the other mist screen forming device 50B. It is larger than the interval.

  Further, a connection plate 202 is provided at a lower end on the center side of the curved plate-like body 201. An attachment surface such as an adhesive tape is provided on the back surface of the connection plate 202. Further, wall portions 209 are formed at both ends of the connection plate 202 in the longitudinal direction. The length of the connection plate 202 is smaller than the length of the mist screen connector 200.

  FIG. 7 is a plan view showing a state where the mist screen connector is installed in the mist screen forming device. FIG. 8 is an explanatory view showing the operation of this mist screen connector. First, two mist screen forming apparatuses 50 are arranged side by side so that the mist screen to be discharged forms a continuous surface. At this time, the main body 51 of one mist screen forming apparatus 50A and the main body 51 of the other mist screen forming apparatus 50B are arranged close to each other (including the contact state; the same applies hereinafter). Next, the mist screen connecting device 200 is placed over the discharge port 50c and over the gap between the main body edge 50b of the one mist screen forming device 50A and the main body edge 50b of the other mist screen forming device 50B. Place it so as to straddle it. At this time, the mist screen connector 200 is attached and fixed to the main body edge 50b with the attachment surface.

  Next, the mist M is discharged from the discharge port 50c. The discharged mist M flows upward along the outer surface 203 of the curved plate-shaped body 201 of the mist screen connector 200, and the mist screen S on the right side in the figure and the mist on the left side in the figure above the mist screen connector 200. The ends with the screen S are connected. Thus, the mist screens S are formed neatly and continuously near the edges of the mist screen forming device 50, so that there is no loss of the image.

  Further, even when the mist M hits the inner surface 204 of the curved plate-like body 201 and forms dew, water droplets flow along the inner surface 204 and fall to the discharge port 50c. Even when water drops fall on the connection plate 202, the water flows from both ends of the connection plate 202 to the discharge port 50 c, and does not drop on the connection portion of the mist screen forming device 50 due to the wall 209.

(Embodiment 3)
FIG. 9 is a side view showing the mist screen connector according to the present invention. FIG. 10 is a plan view showing the mist screen connector shown in FIG. The mist screen connector 300 is formed of a curved plate 301 having a semicircular cross section. Preferably, the width of the curved plate 301 is substantially equal to the width of the mist screen.

  The length of the mist screen connector 300 is preferably the length of the end NM of the mist screen forming device 50, specifically, the portion NM where the mist from the edge 50a of the discharge port 50c to the edge 50b of the main body cover is not discharged. More than double. From another viewpoint, when the mist screen forming device 50 is disposed close to, the edge 50b of the discharge port 50c of one mist screen forming device 50A and the edge 50b of the discharge port 50c of the other mist screen forming device 50B. It is larger than the interval.

  FIG. 11 is a plan view showing a state where the mist screen connector is installed in the mist screen forming device. FIG. 12 is an explanatory diagram showing the operation of the mist screen connector. First, two mist screen forming apparatuses 50 are arranged side by side so that the mist screen to be discharged forms a continuous surface. At this time, the main body 51 of one mist screen forming apparatus 50A and the main body 51 of another mist screen forming apparatus 50B are arranged close to each other. Next, the mist screen connector 300 is placed over the discharge port 50c and over the gap between the main body edge 50b of the one mist screen forming device 50A and the main body edge 50b of the other mist screen forming device 50B. Place it so as to straddle it.

  Next, the mist M is discharged from the discharge port 50c. The discharged mist M bends and flows upward along the outer surface 303 of the curved plate-shaped body 301 of the mist screen connector 300, and the mist screen S on the right side in the figure and the left side in the figure above the mist screen connector 300 Of the mist screen S are connected to each other.

Thus, the mist screens S are formed neatly and continuously near the edges of the mist screen forming device 50, so that there is no loss of the image. Further, even when the mist M hits the inner side surface 304 of the curved plate-like body 301 and forms dew, water droplets flow along the inner side surface 304 and fall to the discharge port 50c.

(Embodiment 4)
FIG. 13 is a side view showing a mist screen connector according to Embodiment 4 of the present invention. FIG. 14 is a plan view showing the mist screen connector shown in FIG. The mist screen connector 400 has a semicircular or semicircular solid body in cross section. The width of the solid body is preferably substantially equal to the width of the mist screen.

  The length of the mist screen connecting device 400 is preferably the end NM of the mist screen forming device 50, specifically, the part NM where the mist from the edge 50a of the discharge port 50c to the edge 50b of the main body cover is not discharged. More than double. From another viewpoint, when the mist screen forming device 50 is arranged adjacent to the mist screen forming device 50A, the edge 50b of the discharge port 50c of one mist screen forming device 50A and the edge 50b of the discharge port 50c of the other mist screen forming device 50B. It is larger than the interval.

  FIG. 15 is a plan view showing a state in which the mist screen connector is installed in the mist screen forming device. FIG. 16 is an explanatory view showing the operation of the mist screen connector. First, two mist screen forming apparatuses 50 are arranged side by side so that the mist screen to be discharged forms a continuous surface. At this time, the main body 51 of one mist screen forming apparatus 50A and the main body 51 of another mist screen forming apparatus 50B are arranged close to each other. Next, the mist screen connecting device 400 is placed over the gap between the main body edge 50b of the one mist screen forming device 50A and the main body edge 50b of the other mist screen forming device 50B on the discharge port 50c. Place it so as to straddle it.

  Next, the mist M is discharged from the discharge port 50c. The discharged mist M bends and flows upward along the outer surface 403 of the solid body of the mist screen connector 400, and the mist screen S on the right side in the figure and the mist screen on the left side in the figure above the mist screen connector 400. The ends with S are connected. Thus, the mist screens S are formed neatly and continuously near the edges of the mist screen forming device 50, so that there is no loss of the image.

(Embodiment 5)
FIG. 17 is a partial perspective view showing a mist screen forming apparatus according to Embodiment 5 of the present invention. FIG. 18 is a partial side view showing the mist screen forming device shown in FIG. FIG. 19 is a partial plan view showing the mist screen forming device shown in FIG. The mist screen forming device 60 has a configuration in which the mist screen connecting device 100 according to the first embodiment is divided into two and provided on a main body 61 of the mist screen forming device 60.

The mist screen forming device 60 has a structure in which the rectifying piece 1 is arranged near the edge 50a of the discharge port 50c, and the rectifying piece 1 is fixed to the vicinity of the center of the edge 50b of the main body 61 by the beam portion 62. is there. Each rectifying piece 1 has a fan shape in plan view and a semicircular arc shape in side view. More specifically, each straightening piece 1 has a curved surface 3 (outer surface 3) in which the leaf-shaped flat plate of a ginkgo is curved at a predetermined curvature in an outer vertical direction (indicated by an arrow in the drawing). The curved flat plate is gradually converged and integrated with the beam portion 62. The beam portion 62 extends in the horizontal direction and bends downward at the position of the edge 50 b to be fixed to the main body 61.

In addition, since each rectifying piece 1 has a plate-like body curved, a curved surface 4 is formed in an inner vertical direction (indicated by an arrow in the drawing). When the mist adheres to the inside of the curved surface 4 to form a water droplet, the water droplet flows down along the inner surface 4.

  The distance between the rectifying piece 1 and the edge 50b of the main body 61 is equal to or greater than the portion NM where no mist is discharged from the edge 50a of the discharge port 50c to the edge 50b of the main body cover. From another viewpoint, when the mist screen forming device 60 is disposed adjacent to the mist screen forming device 50A, the edge 50b of the discharge port 50c of one mist screen forming device 50A and the edge 50b of the discharge port 50c of the other mist screen forming device 50B. It is greater than half the interval.

  The rectifying piece 1 has a predetermined area and determines its curvature and radius so that the flow of the mist to be discharged flows along the upper surface of the curved surface 3. The area and shape of the inner surface 4 are determined in detail so that water droplets caused by the dew fall down along the inner surface 4 even if the mist hits the inner surface 4 and dew forms. I do. Further, the beam portion 62 has a shape having a small cross-sectional area in a direction perpendicular to the mist flow direction so that the mist discharged from the discharge port 50c easily passes above the beam portion 62. Preferably, it is in the shape of a bar or a strip that is vertically oriented.

  That is, the rectifying piece 1 needs a predetermined area in order to exhibit a function of bending the mist flowing on the outer surface 3 along the curved surface 3 and flowing the mist upward. Even if dew condensation occurs, the water droplets fall before reaching the beam portion 62, and the beam portion 62 supports the rectifying piece 1 and allows the mist flow to pass therethrough with little disturbance, and prevents dew condensation from occurring. Then, it becomes shaft-shaped or plate-shaped.

  The operation of the mist screen connector will be described. First, two mist screen forming devices 60 are arranged side by side so that the mist screen to be discharged forms a continuous surface. At this time, the main body 61 of one mist screen forming apparatus 60A and the main body 61 of another mist screen forming apparatus 60B are arranged close to each other and brought into contact.

  In this state, the main body edge 50b of the one mist screen forming device 60A and the main body edge 50b of the other mist screen forming device 60B face each other, and a curved surface is formed in the vicinity of the mist discharge port 50c in the outer vertical direction. The rectifying piece 1 having 3 is located. Further, with such a structure, the curved surfaces 3 of the pair of rectifying pieces 1 are located substantially symmetrically and at a predetermined interval.

  Next, the mist M is discharged from the discharge port 50c. The discharged mist M bends and flows upward along the outer side surface 3 of the flow regulating piece 1, and ends of the mist screen S on the right side in the figure and the mist screen S on the left side in the figure are connected to each other. Further, in the beam portion 62, the discharged mist M passes upward as it is and joins the connected mist screen S.

Thereby, since the mist screen S is formed neatly and continuously near the edge of the mist screen forming device 50, there is no loss of the image. Furthermore, even when the mist M hits the inner surface 4 of the flow regulating piece 1 and forms dew, water droplets flow along the inner surface 4 of the flow regulating piece 1 and fall into the discharge port 50c (the flow direction of the water droplet is indicated by an arrow in the figure). For this reason, a water drop does not drop on the connecting portion of the mist screen forming device 60.

  Further, in the case of such a configuration, since the rectifying piece 1 is fixed to the main body 61, the mist screen S can be connected neatly only by correctly arranging the mist screen forming devices 60 in a line. Note that the rectifying pieces 1 are provided on both sides of the main body 61 (the other is not shown).

(Embodiment 6)
FIG. 20 is a partial side view showing a mist screen forming apparatus according to the present invention. FIG. 21 is a partial plan view showing the mist screen forming device shown in FIG. The mist screen forming device 70 has a configuration in which the mist screen connecting device 300 according to the third embodiment is divided into two parts and integrated with a main body 71 of the mist screen forming device 70 as a rectifying piece 72.

  The straightening piece 72 is a curved plate-like body having a sail-shaped cross section, and a leg 73 extending in the vertical direction is attached to the main body 71. The rectifying piece 72 has a predetermined area and determines its curvature and radius so that the flow of the mist to be discharged flows along the upper surface of the curved surface 303. The area and shape of the inner side surface 304 are determined in detail so that even if mist hits the inner side surface 304 and condenses, water droplets caused by the dew flow downward along the inner side surface 304. .

FIG. 22 is an explanatory diagram showing the operation of the mist screen forming device. First, two mist screen forming apparatuses 70 are arranged side by side so that the mist screen to be discharged forms a continuous surface. At this time, the main body 71 of one mist screen forming apparatus 70A and the main body 71 of the other mist screen forming apparatus 70B are arranged close to each other and brought into contact.

  In this state, the main body edge 50b of the one mist screen forming device 70A and the main body edge 50b of the other mist screen forming device 70B face each other, and are curved in the vicinity of the mist discharge port 50c and outside in the vertical direction. The rectifying piece 72 having the surface 303 is located. Further, with such a structure, the curved surfaces 303 of the pair of rectifying pieces 72 are positioned substantially symmetrically and at a predetermined interval.

  Next, the mist M is discharged from the discharge port 50c. The discharged mist M bends upward along the outer side surface 303 of the flow regulating piece 72, and at the upper portion, the ends of the mist screen S on the right side in the figure and the mist screen S on the left side in the figure are connected. Thus, the mist screen S is formed cleanly and continuously even near the edge of the mist screen forming apparatus 70, so that there is no loss of the image.

  Further, even when the mist M hits the inner surface 304 of the flow regulating piece 72 and forms dew, water droplets flow along the inner surface 304 of the flow regulating piece 1 and fall to the discharge port 50c (the flow direction of the water droplet is indicated by an arrow in the drawing). For this reason, a water drop does not drop on the connecting portion of the mist screen forming device 70.

  In the case of such a configuration, since the rectifying piece 72 is fixed to the main body 71, the mist screen S can be connected neatly only by correctly arranging the mist screen forming devices 50. The rectifying pieces 72 are provided on both sides of the main body 71 (not shown).

(Modification)
In the first to sixth embodiments, the curved surface may be a slope. Drawing 23 is an explanatory view showing the modification of the mist screen connector of the present invention, (a) is a perspective view, (b) is a side view, and (c) is a top view. In the mist screen connector 90, the rectifying piece 1 of the mist screen connector 100 according to the first embodiment has a triangular shape in a plan view and an oblique linear shape in a side view. The rectifying piece 91 forms slopes 93 and 94 in the outer vertical direction and the inner vertical direction while being symmetrically supported at predetermined intervals by the beam portion 2.

  The slope 93 in the outer vertical direction has a function of bending the mist along the slope 93 and flowing the mist upward. In addition, when the mist adheres to the inside slope 94 and becomes a water drop, the water drop flows down the slope 94. As described above, in the present invention, the curved surface and the inclined surface have substantially the same function. A configuration in which the curved surface according to the second to sixth embodiments is replaced with a slope is not shown.

(Example of mist screen configuration)
Next, an example of a mist screen forming apparatus using the mist screen connector will be specifically described. In addition, the reference numerals described below indicate the reference numerals shown in the drawings after FIG. The mist screen connecting device according to Embodiments 1 to 4 of the present invention is preferably used as a device for connecting a mist layer MS described below when the following mist screen forming devices are arranged side by side. Further, by using the mist screen forming apparatus according to the fifth and sixth embodiments of the present invention having the following configuration, a stable mist screen can be connected clearly.

Drawing A1 is a key map showing the mist screen formation device concerning the present invention, (a) is a front view and (b) is a side view. FIG. A2 is a conceptual diagram showing a forming mode of the mist screen of the present invention. The mist screen forming apparatus 1000 forms a mist screen S above the apparatus. The mist screen forming apparatus 1000 generates mist using water supplied from a water tank 1001, and rectifies the generated mist. A mist rectifier 2 that performs rectification, a mist guide 3 that discharges the rectified mist into an upper space in a predetermined screen shape, and jets air upward and jets the air in a predetermined screen shape in the same direction as the mist. And an air ejection device 5 provided on both sides of the mist guide 3. An image is projected on the mist screen S by a general-purpose projector P.

  As shown in FIG. A2, the mist screen S to be formed has a screen-like or film-like mist blown out above the apparatus, and film-like air is blown out on both sides of the mist screen S. A three-layer structure including an AS, a mist layer MS, and an air layer AS is formed. By sandwiching the mist layer MS between the air layers AS, the mist can be prevented from diffusing upward (downstream of the flow), so that the mist screen S can be stabilized and a clear image can be formed. Specific embodiments of the present invention will be described below.

  FIG. A3 is a configuration diagram showing the mist screen forming device according to Embodiment 1 of the present invention. FIG. A4 is a side view of the mist screen forming device shown in FIG. A3. FIG. A5 is a sectional view taken along line AA of FIG. A3. FIG. A6 is a BB cross-sectional view of FIG. A3. The mist screen forming apparatus 100 includes a mist generator 1 arranged at the lower center of the inside of the main body casing 101, a mist rectifier 2 arranged at an upper part of the mist generator 1 for rectifying the generated mist, A mist guide 3 arranged above the mist rectifier 2 for ejecting rectified mist into a space above the mist guide 3; arranged on both sides of the mist generating device 1 for ejecting air upward and the air And an air ejection device 5 provided on both sides of the mist guide 3. These are provided inside the main body housing. The main body housing 101 is a substantially rectangular parallelepiped formed entirely of a metal plate and is long in one direction, and the upper longitudinal direction is a slope 101a. The air guide 4 and the mist guide 3 constitute a guide section 6.

As shown in the above-mentioned drawings and a partially enlarged cross-sectional view of FIG. A7, the mist generating device 1 has a rectangular parallelepiped casing 11 for temporarily storing the generated mist, the casing 11 being long in one direction, And an ultrasonic transducer drive unit 12 for generating mist, which is disposed at the lower part of the tank, is provided above the tank 12 and immediately above the ultrasonic transducer 13 and is substantially cylindrical in its entirety. The spray nozzle 14 has a hole 15 for supplying a spray liquid to the ultrasonic vibrator 13 on the side surface and has a vertically opened spray nozzle 14, and centrifugal fans 40 provided on both sides of the side surface of the housing 11. The spray liquid is stored at the bottom of the above 11 to a water level at which the above 12 and 14 sink, and the spray liquid is mist-formed by the ultrasonic vibrator 13 attached below the above 14. The inside of the housing 11 is divided into two by a partition plate 15.

A8 to A11 are exploded views of the mist screen forming device. FIG. A8 is a three-view drawing showing a state in which the air ejection device has been removed from the housing. FIGS. A9-1 and A9-2 are an external view and a cross-sectional view showing a state where the mist guide and the air guide are removed. FIG. A10 is an external view and a cross-sectional view illustrating a state where the storage chamber of the mist rectifier is removed. FIG. A11 is an external view and a cross-sectional view illustrating a state where the middle plate is removed.

FIGS. A11 (C) and (d) show a state in which a top plate serving as a partition wall with the mist generator 1 is exposed. As described above, a rectangular opening 17 is provided in the top plate 16 at the upper part of the housing 11 for connection with the mist generator 1. The opening 17 is located on one side with respect to the central axis in the longitudinal direction. Further, the centrifugal fans 40 are provided on both sides of the side surface of the housing 11 in order to supply air to each section in the divided housing 11. The ultrasonic vibrator 13 is supplied with power of a predetermined frequency from the 12 (not shown). A water supply port is connected to a lower portion of the housing 11, and the water supply port is connected to the spray liquid tank 1001 via a pump (not shown).

  A mist rectifier 2 is arranged above the mist generator 1. As shown in FIGS. A8 to A11, the mist rectifier 2 includes a passage chamber 21 and a storage chamber 22, and has a substantially triangular or mountain-shaped cross section in the short direction. The mist rectifier 2 forms a mist passage 23 inside as shown in the schematic view of the passage in FIG. A12 and FIG. A9-2 (d). A passage 23a is formed, and the passage 23b is bent and inverted at both ends, and a passage 23b adjacent to the passage 23a via the partition wall 24 is formed.

In other words, a partition plate (partition wall 24) is provided at the center in the longitudinal direction of the rectangular parallelepiped and the partition plate is opened at both ends to form a passage 23 through which mist flows from the center position to both sides and returns to the center direction again. In order to form such a passage 23, a partition wall 24 is provided in the center of the mist rectifier 2 in the center in the central longitudinal direction, and both ends thereof form a gap with respect to both side surfaces of the housing 21. Curved plates 25 that are curved in the horizontal direction to improve the flow of mist are provided at both ends in the longitudinal direction of the housing 20.

  More specifically, as shown in FIG. A10 (c), the partition wall 24 is provided on the lower surface of the top plate 25 of the housing 21. The partition wall 24 is provided at the center of the middle plate 26 in the longitudinal direction. Further, as shown in FIG. A11 (d), when the middle plate 26 is removed, the bottom plate 16 of the housing 21 is exposed, and the introduction port 28 (opening 17) is exposed.

  Next, a bottom plate 27 having a rectangular mist inlet 28 of a predetermined shape is connected to a portion of the mist generator 1 that is connected to the opening 17 so as to cover the opening 17. The mist inlet 28 is located on one side of the longitudinal partition of the bottom plate 27. Further, as shown in FIG. A10 (d), a plurality of holes 29 are provided in the middle plate 26 of the housing 21 in a substantially linear shape. The hole 29 is small at the center in the longitudinal direction and becomes larger toward both ends. This is because the mist flowing from both ends hits at the center of the passage, and the pressure at the center of the passage becomes high. Therefore, the hole 29 at the center of the passage is made small, and the holes 29 at both ends where the pressure is lower than at the center. The reason for this is to make the movement of the mist to the storage chamber 22 provided at the upper part uniform by increasing.

  It is preferable to provide a difference of 2 to 3 times in area ratio between the hole 29 at the most central position and the hole 29 at the end portion. In this way, even if a pressure difference occurs in the passage 23, the mist can be uniformly moved to the storage chamber 22. Further, in the present embodiment, there are four holes 29 symmetrically in the longitudinal direction, and the interval between the holes 29 is the same as the interval between the first hole 29a and the second hole 29b. The distance between the hole 29b and the third hole 29c is wider than the distance between the third hole 29c and the fourth hole 29d. This is because if the hole 29 is moved toward the center, the mist is concentrated too much at the center. Further, the positions of the holes 29 in the short direction substantially match from the first hole 29a at the center to the fourth hole 29d. This is because it is positioned almost immediately below a discharge port to be described later.

  As shown in FIGS. A9-2 (c) and (d), for example, the storage chamber 22 has a substantially triangular cross section, and a band-shaped discharge port 71 is provided at the top. The dimension (thickness) of the discharge port 71 in the short direction is the thickness of the projection surface of the mist screen S. By making the cross section of the storage chamber 22 substantially triangular or mountain-shaped, mist that stays hardly occurs. Then, a desired flow velocity is obtained by squeezing the discharge port 71. The thickness (band width) of the discharge port 71 needs to be large enough to form the mist screen S, and it is not preferable that the discharge port 71 is too thick. In particular, when used as a rear projection type screen, an image is blurred. Therefore, the thickness of the discharge port 71 is set to be uniform at least in the projection range, and the flow rate of the mist can also maintain the thickness. Set to speed.

  The air ejection devices 5 are arranged on both sides of the mist generating device 1 as shown in FIG. A5. The air ejection device 5 is a device that ejects air containing no mist upward, and includes a housing 51 provided to be connected to the mist generation device 1 and a plurality of axial fans provided on a side surface of the housing 51. 52 and an air outlet 53 opened at the top of the housing 51. The air outlet 53 is inclined in accordance with the shape of the main body housing 101, and has a shape along the mountain-shaped slope of the storage chamber 22. The air ejection device 5 has a structure substantially separated on both sides by the mist generating device 1. However, as shown in FIG. A6, the internal space is connected to the space around the centrifugal fan 40 of the mist generating device 1, Therefore, the wind from the axial fan 52 is supplied into the casings 51 of both the air ejection devices 5. Thereby, the air jetted from the air jetting device 5 becomes more uniform.

  In addition, as long as the air ejection device 5 and the mist generating device 1 can be configured in the main body housing 101, the housings may be made independent from each other, or a structure in which some sheet metals are shared. good. That is, as long as the air ejection devices 5 can be configured on both sides of the mist generation device 1, the specific structure of the housing is not limited to the example shown in FIG.

  The mist guide 3 is connected to the discharge port 71 of the mist rectifier 2 as shown in FIG. As shown in the enlarged view of FIG. A13 (FIG. 13A is a cross-sectional view, and FIG. 13B is a partial plan view), the mist guide 3 has air guides 4 of the air ejection device 5 on both sides thereof. Is configured. In the example shown in the figure, the mist guide 3 and the air guide 4 are configured as an integrated guide portion 6, and the honeycomb structure is formed by regularly arranging a large number of regular hexagonal cylindrical bodies. . Each of the tubular bodies has a role of a guide, and in the present configuration, the tubular body located immediately above the discharge port 71 becomes the mist guide 3 (a portion surrounded by a dashed line in FIG. A13 (b)). The tubular body located immediately above the air outlet 53 serves as the air guide 4.

  The thickness of the honeycomb structure (the length of the cylindrical body) is set so that the mist and air that have entered in a disturbed state are guided to regulate the flow, and the honeycomb structure can be ejected directly above the guide portion 6. As a result, the mist screen S is ejected in a three-layer structure of the air layer AS, the mist layer MS, and the air layer AS, as shown in FIG. A2. In the configuration of FIG. 5, the thickness of the air layer AS is larger than the thickness of the mist layer MS. Specifically, the air layer AS having a thickness of twice or more (10 times or less) the mist layer MS is formed. If the mist layer MS is thick, it is difficult to visually recognize an image during image formation by rear projection, and thus the mist layer MS is preferably thin.

The mist guide 3 is not limited to the honeycomb structure having a hexagonal cylindrical body. For example, as shown in FIG. A14 (a), a honeycomb structure in which a large number of cylindrical bodies 61 each having a square cross section may be regularly arranged. Further, as shown in FIG. A14 (b), a honeycomb structure in which a large number of cylindrical bodies 62 having a triangular cross section are arranged regularly. Further, as shown in FIG. A14 (c), a honeycomb structure in which a band-shaped cylindrical body 64 provided with a rectifying fin 63 therein is connected in the width direction may be used. Note that the honeycomb structure of the present application includes at least the structure shown in FIG. A14. The height of the mist guide 3 must be large enough to allow the mist and air to flow stably. The cross-sectional area of each cylindrical body increases the guiding effect by reducing it, but if it is too small, the mist flow is hindered by water droplets attached to the cylindrical body, so it should be 20 mm square to 40 mm square. preferable.

  The mist screen forming apparatus 100 includes a mist control unit that controls generation of mist of the mist generation device 1 and control of driving of the centrifugal fan 40, and an air control unit that controls driving of the axial flow fan 52 of the air ejection device 5. And The mist control unit controls the water level in the housing 11 within a certain range by driving a pump while detecting the water level in the housing 11 based on the output of a water level sensor (not shown) attached to the housing 11. At the same time, power is supplied to the ultrasonic transducer drive unit 12 to adjust the amount of mist generated. In addition, the centrifugal fan 40 capable of adjusting the air volume is driven to control the amount and speed of mist discharge from the discharge port 71. The air control unit controls the driving of the axial fan 52 to adjust the amount and speed of air blown out from the air outlet 53.

  Next, the operation of the mist screen forming apparatus 100 will be described. In forming the screen, first, water is supplied into the housing 11 from the spray liquid tank 1001 via a pump, and the ultrasonic vibrator driving unit 12 is driven to generate mist in the housing 11. This mist is ejected from the tip of the spray nozzle 14 into the housing 11. Air is strongly introduced into the housing 11 by the centrifugal fan 40. The mist in the housing 11 moves into the mist rectifier 2 from the upper opening 17 (mist inlet 28).

The mist that has moved into the mist rectifier 2 first flows through the internal passage 23 from the vicinity of the center toward both left and right ends, smoothly reverses by the curved plates 25 at both ends, and returns to the center again. Then, the mist flows from both sides collide near the center of the passage 23. In the flow of the passage 23, the mist moves from the plurality of holes 29 provided in the upper part of the passage 23 to the storage chamber 22. The plurality of holes 29 have large areas at both ends and become smaller toward the center, so that the mist is uniformly supplied to the storage chamber 22. When the mist accumulates in the storage chamber 22, the mist is discharged from the discharge port 71 at a constant flow rate by the internal pressure. The discharged mist is guided by the mist guide 3 so that the flow becomes clear, and the mist is ejected upward from its upper end in a screen shape.

  On the other hand, in the air ejection device 5, a large number of axial fans 52 are driven to introduce a large amount of air into the housing 51. The introduced air is blown out from an air outlet 53 opened in the upper part of the housing 51 to reach the air guide 4, where the flow is regulated by the air guide 4 and is blown upward from the upper end. This air is ejected and formed on both sides of the screen by the mist, thereby creating a state where the mist screen is sandwiched. It is preferable that the flow rate of the air be faster than the flow rate of the mist. The flow velocity adjustment is performed by controlling the driving of the axial fan 52 by the air control unit.

  Further, the air ejection device 5 sandwiches the mist layer MS with the air layer AS to prevent the mist of the mist layer MS from diffusing. That is, a screen-like space is formed by the air layer AS, and the mist is confined in the space. In this way, the diffusion of the mist layer MS is prevented, and the thickness of the mist layer MS can be maintained to a desired height. As a result, the image projected on the mist layer MS can be stabilized in the up-down direction (the mist flow direction). Further, since the air layer AS is thicker than the mist layer MS, even if the air layer receives a flow of surrounding air in a use environment, for example, a wind generated when an air conditioner or a person moves, the wind is generated on the surface layer of the air layer AS. Can be absorbed and taken into the flow, so that the mist layer MS is less affected by the air condition in the use environment. In particular, the flow of the air layer AS is fast, and the effect is more enhanced when the air layer AS is thick.

  An image is projected by the projector P onto the mist screen S thus formed. The projection light passes through the air layer AS of the mist screen S, is reflected by the surface of the mist layer MS on the side where the projector P is installed, and forms a desired image or video.

(Embodiment 2)
FIG. A15 is a conceptual configuration diagram showing a mist screen forming apparatus according to Embodiment 2 of the present invention. FIG. A16 is a conceptual diagram showing the mist screen forming device shown in FIG. A15. The mist screen forming apparatus 100 forms a mist screen S in a downward direction. The mist generating apparatus 210 generates mist using water supplied from a water tank from the upper side of the apparatus. A mist rectifier 220 for rectifying the mist, a mist guide 203 for ejecting the rectified mist upward in a predetermined shape, and an air guide 204 for ejecting the air upward and ejecting the air in a predetermined shape are formed by the mist guide 203. The air ejection devices 205 provided on both sides are arranged. An image is projected on the mist screen S by a general-purpose projector. The air guide 204 and the mist guide 203 constitute a guide section 206.

  The mist generating device 210 temporarily stores the generated mist, and stores a cuboid housing 211 that is long in one direction and a spray liquid surrounded by the bottom and side surfaces of the housing 211 and the partition plate 212. A tank portion 201, an ultrasonic vibrator drive unit 213 disposed on the bottom surface of the tank 201, and a directly provided truncated ultrasonic vibrator drive unit 213, the whole of which is substantially cylindrical and has a truncated cone shape in side view. And a centrifugal fan 240 provided on the side surface of the housing 211. An ultrasonic vibrator is attached to the connection between the spray nozzle 230 and the ultrasonic vibrator drive unit 213 (not shown), and the spray liquid is supplied to the ultrasonic vibrator on the side of the spray nozzle 230. It has a hole (not shown).

The lower bottom plate of the housing 211 is open for connection with the mist rectifier 220. Further, the ultrasonic transducer driving unit 213 is connected to a driving device that supplies electric power of a predetermined frequency (not shown). A water supply port is connected to a lower portion of the tank 201. The water supply port is connected to a spray liquid tank via a pump (not shown).

  A mist rectifier 220 including a passage chamber 221 and a storage chamber 222 is disposed below the mist generator 210. As shown in FIG. A16, the mist rectifier 220 has a substantially inverted triangular or inverted mountain-shaped cross section in the lateral direction. The mist rectifier 220 has a mist passage 223 formed therein, and an opening provided at a lower portion of a bottom plate of the housing 211 communicates as an inlet 228. Specifically, the passage 223 is formed such that a passage 223 is formed from one end in the longitudinal direction to the other end, and is bent and inverted at the other end to form a passage 223 adjacent to the passage via a partition 224. The other end is provided with a curved plate 225 that bends in the horizontal direction to improve the flow of the mist.

  A plurality of holes 229 are provided in the bottom plate of the housing 211 of the path 223. This hole 229 is formed so that the downstream side of the passage 223 becomes small. This is because the mist hits the wall at the end of the passage and the pressure at the end of the passage increases, so that the hole 229 at the end of the passage is made smaller and the hole 229 on the upstream side is made larger, so that the storage provided at the lower part is further provided. The movement of the mist to the chamber 222 is made uniform.

  The storage chamber 222 has a substantially triangular cross section, and a band-shaped discharge port 271 is provided at the lower top. The dimension (thickness) of the discharge port 271 in the short direction is the thickness of the projection surface of the mist screen S. Since the storage chamber 222 has a substantially inverted triangle or inverted mountain shape in cross section, no mist stays. Then, a desired flow velocity can be obtained by narrowing the discharge port 271. The thickness of the discharge port 271 is set from the same viewpoint as in the first embodiment.

  The air ejection devices 205 are arranged on both sides of the mist generation device 210 at a predetermined distance. The air ejection device 205 has a structure for ejecting air downward, and has a box-shaped housing 251, a plurality of axial fans 252 provided on a side surface of the housing 251, and an opening at a lower portion of the housing 251. And an air outlet 253.

  The mist guide 203 is connected to the discharge port 271 of the mist rectifier 220. The air guide 204 is connected to the air ejection port 253 of the air ejection device 205. Further, the mist guide 203 and the air guide 204 constitute the air guide 204 at a predetermined interval on both sides of the mist guide 3 as shown in FIG. In the example shown in the figure, the mist guide 203 and the air guide 204 are integrated, and a honeycomb structure is formed in which a large number of regular hexagonal cylindrical bodies are regularly arranged. Each of the tubular bodies has a role of a guide, and in this configuration, as shown in FIG. A17 (b), the tubular body located immediately below the discharge port 271 becomes the mist guide 203, and the air ejection port The tubular body located immediately below 253 is the air guide 204. No cylindrical body is provided between the mist guide 203 and the air guide 204 (the non-guide area 260).

  The thickness of the honeycomb structure (the length of the cylindrical body) is set so as to guide the mist and air that have entered in a turbulent state, regulate the flow, and eject the mist and air immediately below the mist guide 203. As a result, the mist screen S has a five-layer structure of an air layer AS, an intermediate layer TS, a mist layer MS, an intermediate layer TS, and an air layer AS, as shown in FIG. The intermediate layer TS is a space region in which the flow of air generated between the mist layer MS and the air layer AS is not actively generated.

In the configuration of FIG. 5, the thickness of the air layer AS is larger than the thickness of the mist layer MS. Specifically, the air layer AS having a thickness of twice or more (10 times or less) the mist layer MS is formed. If the mist layer MS is thick, it is difficult to visually recognize an image during image formation by rear projection, and thus the mist layer MS is preferably thin. The mist guide 203 is not limited to a honeycomb structure having a hexagonal cylindrical body.

  Next, the operation of the mist screen forming apparatus 200 will be described. Water is supplied from the spray liquid tank to the tank 201, and the ultrasonic vibrator is driven to generate mist in the tank. This mist is ejected from the tip of the spray nozzle 203 into the housing 211. Air is strongly introduced into the housing 211 by the centrifugal fan 204.

The mist in the housing 211 moves into the mist rectifier 220 from the lower opening (mist inlet 228). The mist that has moved into the mist rectifier 220 advances from one end of the passage 223, flows so as to be neatly inverted and returned by the curved plate 225 at the other end, and hits a wall at one end. Then, the mist flowing through the passage 223 moves from the plurality of holes 229 provided in the lower part of the passage 223 to the storage chamber 222. Since the plurality of holes 229 have a larger area on the upstream side and become smaller on the downstream side, the mist is uniformly supplied to the storage chamber 222. When the mist accumulates in the storage chamber 222, the mist is discharged from the discharge port 271 at a constant flow rate by the internal pressure. The discharged mist is guided by the mist guide 203 to make the flow uniform, and is ejected downward in a screen shape.

  On the other hand, in the air ejection device 205, a large number of axial fans 252 are driven to introduce a large amount of air into the housing 251. The introduced air is ejected from an air ejection port 253 opened at a lower portion of the housing 251 and reaches the air guide 204. The jetted air has its flow adjusted by the air guide 204 and is jetted downward from the lower end of the air guide 204. This air is ejected and formed on both sides of the screen by the mist, and forms a state in which the mist screen is sandwiched via the intermediate layer TS. It is preferable that the flow rate of the air be substantially equal to the flow rate of the mist. The flow velocity adjustment is performed by controlling the driving of the axial fan 252 by the air control unit.

  In this way, even if the air layer AS receives wind in the use environment generated when an air conditioner or a person moves, the surface layer of the air layer AS can absorb the wind and take it into the flow. Less susceptible to environmental wind currents. Further, since the intermediate layer TS is formed between the air layer AS and the mist layer MS, the portion serves as a buffer, and the mist layer MS is less likely to be affected by the disturbance of the air layer AS.

  An image is projected by the projector P onto the mist screen S thus formed. The projection light passes through the air layer AS of the mist screen S, is reflected by the surface of the mist layer MS on the side where the projector P is installed, and forms a desired image or video.

(Embodiment 3)
FIG. A18 is a partial configuration diagram illustrating a mist screen forming apparatus according to Embodiment 3 of the present invention. This mist screen forming apparatus has substantially the same configuration as the mist screen forming apparatus 100 according to the first embodiment, but is characterized in that the air layer AS to be formed is formed in two layers on both sides of the mist layer MS. is there.

  FIG. 2 shows a plan view of a guide portion for forming the air layer AS in two layers. The guide portion 360 has substantially the same configuration as the guide portion 6 shown in the first embodiment, and is arranged at the air ejection port 53 of the air ejection device 5 to form the inner air layer AS on the mist layer MS side. The cylindrical body is not provided in the intermediate region 352 corresponding to the intermediate layer TS formed as a result of the ejection, including the inner region 350 that forms the outer layer 351 that forms the outer air layer AS that becomes the outer side. . That is, an intermediate region 352 is provided in a portion corresponding to the air guide 4 of the guide portion 6 of the first embodiment, and a tubular body is not provided in the intermediate region 352 (the same state as when a lid is provided). Air is jetted from the air jetting section 53 of the air jetting device 5. Other configurations are the same as those of the first embodiment, and illustration and description are omitted. In addition, the size of each cylindrical body forming the inner region 350 and the outer region 351 may be different, or the length may be different. The portion where the mist layer MS is formed is the mist layer formation region 353.

  FIG. A19 is a schematic diagram illustrating a structure of the mist screen S formed by the guide unit illustrated in FIG. A18. The mist screen S is formed from the mist rectifier 2 using the guide portion 360, and the inner air layer AS1 is formed on both sides of the mist screen S by the inner region 350 of the guide portion. In this state, the inner air layer AS1 is formed on both sides of the mist layer MS in substantially the same manner as in the first embodiment, and a state in which the mist layer MS is sandwiched is formed. The inner air layer AS1 has the same function and effect as the air layer AS of the first embodiment. That is, the mist layer MS is sandwiched by the inner air layer AS1 to prevent mist diffusion of the mist layer MS, and the thickness of the mist layer MS can be maintained to a desired height. As a result, the image projected on the mist layer MS can be stabilized in the up-down direction (the mist flow direction).

Further, an outer air layer AS2 is formed by the outer region. The outer air layer AS2 absorbs the flow of air from an external air conditioner or fan and pushes it upward. Since the intermediate layer TS serving as a buffer is formed between the outer air layer AS2 and the inner air layer AS1, it is less susceptible to turbulence in the flow of the outer air layer AS2. As the thickness (width) of the intermediate layer TS increases, the influence of the wind of the external environment can be suppressed.

(Embodiment 4)
FIG. A20 is a configuration diagram showing a mist screen forming apparatus according to Embodiment 4 of the present invention. The intermediate layer TS in the configuration of the third embodiment is eliminated (the inner air layer AS1 and the outer air layer AS2 are adjacent to each other), and further, air that blows air to each of the inner air layer AS1 and the outer air layer AS2. The ejection device 5 and the air ejection port 53 may be provided separately. As shown in the figure, in this mist screen forming apparatus, an air ejection device 5a and an air ejection device 5b having substantially the same configuration as those of the above embodiment are provided on both sides of the mist generator and the mist rectifier 2, respectively.

  The air ejection port of the air ejection device 5a and the air ejection port of the air ejection device 5b are provided on both sides of the ejection port 71. The guide portion 6 has a honeycomb structure in which a large number of cylindrical bodies having a hexagonal cross section are arranged in the same manner as described above. The tubular body located directly above the discharge port 71 serves as the mist guide 3, and the tubular body located immediately above the air ejection port 53a serves as the air guide 4a for the inner air layer AS1. The tubular body located immediately above the air outlet 53b serves as an air guide 4b for the outer air layer AS2.

  The mist generated by the mist generator is rectified by the mist rectifier 2 and is discharged from the discharge port 71 by the mist guide 3 in a screen form. The air ejection devices 5a and 5b eject air from the air ejection ports 53a and 53b, respectively, to form the inner air layer AS1 and the outer air layer AS2. The inner air layer AS1 and the outer air layer AS2 form a state where the mist layer MS is sandwiched.

Further, the axial fans of the air ejection devices 5a and 5b are driven and controlled such that the flow speed of the outer air layer AS2 is faster than the flow speed of the inner air layer AS1. By making the flow rate of the outer air layer AS2 faster than the flow rate of the inner air layer AS1, the diffusion of the air layer AS1 at the upper part of the mist screen is prevented, and accordingly, the diffusion of the inner mist layer MS is prevented. The image projected on the layer MS can be further stabilized in the vertical direction (the direction of mist flow).

Further, a humidifier for supplying high-humidity air to the inside of the housing 51 in the air ejection device 5a is provided (not shown), and high-humidity air that does not become a mist is discharged to thereby form the inner air layer AS1. May be formed. As described above, the mist layer MS is sandwiched between the high-humidity inner air layers AS1, and the humidity gradient between the mist layer MS and the inner air layer AS1 is smaller than when normal air is discharged into the inner air layer AS1. As a result, the diffusion of the mist layer MS is prevented, and as a result, the image projected on the mist layer MS can be further stabilized in the vertical direction (the direction of mist flow).

[Appendix 1]
A mist screen forming apparatus that discharges a mist supplied from a mist generating unit in a screen shape,
Mist discharging means for discharging mist in a screen shape in one direction to form a mist layer on a space,
Air ejecting means for forming an air layer sandwiching the mist layer by ejecting air containing no mist in substantially the same direction as the mist ejection direction and on both sides of the mist layer,
A mist screen forming apparatus comprising:
[Appendix 2]
The mist discharge means has a band-shaped mist discharge port for discharging the mist, and the air discharge means has a band-shaped air discharge port provided adjacent to both sides of the mist discharge port while discharging air. The mist screen forming apparatus according to claim 1, wherein:
[Appendix 3]
The mist screen forming apparatus according to claim 1 or 2, wherein a mist guide formed of a honeycomb structure formed by arranging a large number of cylindrical bodies in a regular manner is connected to the mist discharge port. .
[Appendix 4]
Furthermore, an air guide composed of a honeycomb structure formed by arranging a large number of cylindrical bodies regularly is connected to the air ejection port. Mist screen forming equipment.
[Appendix 5]
Further, a storage portion for storing the mist, and a passage for passing the mist supplied from the mist generating means, and the passage has a plurality of holes communicating with the storage portion for storing the mist,
The mist screen forming apparatus according to any one of additional items 1 to 4, wherein the mist discharging unit discharges the mist stored in the storage unit in a screen shape.
[Appendix 6]
The mist screen forming apparatus according to claim 5, wherein the plurality of holes are such that holes downstream of the mist flow in the passage are smaller than holes upstream.
[Appendix 7]
Further, the mist discharge means has a band-shaped mist discharge port for discharging the mist,
The mist outlet is provided in the storage unit,
The mist screen forming apparatus according to claim 6, wherein the plurality of holes are arranged substantially along a longitudinal direction of the mist discharge port.

100 Mist screen connector 1 Rectifying piece 2 Beam 3 Curved surface (outer surface)
4 curved surface (inner surface)
50 Mist screen forming device

  The present invention relates to a mist screen connecting device and a mist screen forming device that display a still image or a moving image by projecting light onto a fog screen by a projector or the like.

  Conventionally, a mist display device as disclosed in Patent Document 1 has been proposed. This mist display device is a projection image estimation distortion data calculation unit that calculates distortion of an image projected on a droplet film in order to solve a problem that a projection image is disturbed by disturbance of a droplet film / liquid film due to external wind. And an image conversion matrix generation unit that calculates a correction value for reducing the calculated distortion, and a correction processing unit that corrects an image projected on the droplet film using the calculated correction value. Shall do.

JP 2016-46711 A

  Here, when enlarging the projection area of the mist display, it is conceivable to arrange a plurality of mist displays in a line and connect the droplet films. FIG. 24 shows an example in which mist displays are connected. When the two mist displays 900 are arranged in a line to connect the droplet films, the droplet film of the mist display S is not formed up to the end of the apparatus main body 901, and thus the region 902 where the droplet film does not exist at the connection portion. Is generated, or even if the droplet films merge as they go upward, a streak-like region with a low droplet density is generated, and the uniformity of the droplet density of the mist display S cannot be obtained. There's a problem. The present invention has been made to solve such a problem.

The mist screen connecting device according to the present invention has a state in which one mist screen forming device and another mist screen forming device are arranged close to each other in a direction in which mist screens formed by discharging mist by each mist screen forming device are continuous. In, it is disposed between the edge of the one mist screen forming device and the edge of another mist screen forming device, having a pair of curved surfaces or slopes in the outer vertical direction, the A pair of curved surfaces and inclined surfaces are provided substantially symmetrically with a predetermined interval in the connection direction.

  In the above invention, it is preferable to further have a pair of curved surfaces or inclined surfaces in the inner vertical direction. Further, it is preferable that a pair of rectifying pieces having a curved surface or an inclined surface in the outer vertical direction are provided in a pair, and the rectifying pieces are connected to each other by a beam portion.

The mist screen forming apparatus according to the present invention has a state in which one mist screen forming apparatus and another mist screen forming apparatus are arranged close to each other in a direction in which mist screens formed by discharging mist by each mist screen forming apparatus are continuous. The main body edge of the one mist screen forming device and the main body edge of the other mist screen forming device are opposed to each other, and a curved surface or a slope is provided in the vicinity of the mist discharge port and in the outer vertical direction. Features.

  In the above invention, it is preferable to further have a curved surface or an inclined surface in the inner vertical direction. Further, it is preferable that the curved surface or the inclined surface is provided as a rectifying piece by a beam portion at an edge of a main body which is arranged close to the mist screen forming device.

It is a perspective view which shows the mist screen connection tool which concerns on Embodiment 1 of this invention. It is a side view which shows the mist screen shown in FIG. It is a top view showing the state where the mist screen connecting device was installed in the mist screen forming device. It is explanatory drawing which shows operation | movement of this mist screen connection tool. It is a side view which shows the mist screen connection tool which concerns on Embodiment 2 of this invention. It is a top view which shows the mist screen connection tool shown in FIG. It is a top view showing the state where the mist screen connecting device was installed in the mist screen forming device. It is explanatory drawing which shows operation | movement of this mist screen connection tool. It is a side view which shows the mist screen connection tool which concerns on this invention. It is a top view which shows the mist screen connection tool shown in FIG. It is a top view showing the state where the mist screen connecting device was installed in the mist screen forming device. It is explanatory drawing which shows operation | movement of this mist screen connection tool. It is a side view which shows the mist screen connection tool which concerns on Embodiment 4 of this invention. It is a top view which shows the mist screen connection tool shown in FIG. It is a top view showing the state where the mist screen connecting device was installed in the mist screen forming device. It is explanatory drawing which shows operation | movement of this mist screen connection tool. It is a partial perspective view showing a mist screen forming device according to a fifth embodiment of the present invention. FIG. 18 is a partial side view showing the mist screen forming device shown in FIG. 17. FIG. 18 is a partial plan view showing the mist screen forming device shown in FIG. 17. It is a partial side view showing the mist screen forming device concerning the present invention. FIG. 21 is a partial plan view showing the mist screen forming device shown in FIG. 20. It is explanatory drawing which shows operation | movement of this mist screen forming apparatus. It is explanatory drawing which shows the modification of the mist screen connector of this invention. It is explanatory drawing which shows the example in the case of connecting a mist display. BRIEF DESCRIPTION OF THE DRAWINGS It is a conceptual diagram which shows the mist screen forming apparatus which concerns on this invention, (a) is a front view, (b) is a side view. It is a key map showing the formation mode of the mist screen of the present invention. 1 is a configuration diagram illustrating a mist screen forming device according to Embodiment 1 of the present invention. FIG. 3B is a side view of the mist screen forming device shown in FIG. 3A. It is AA sectional drawing of FIG. 25A3. It is BB sectional drawing of FIG. 25A3. It is a partially expanded sectional view of FIG. 25A5. It is an exploded view of a mist screen forming device, and is a three-view drawing showing a state where an air ejection device was removed from a case. It is an exploded view of a mist screen forming device, and is an appearance view and a sectional view showing a state where a mist guide and an air guide are removed. It is an exploded view of a mist screen formation device, and is an outline view and a sectional view showing a state where a storage room of a mist rectifier was removed. It is an exploded view of a mist screen forming device, and is an outline view and a sectional view showing a state where a middle plate has been removed. It is a channel schematic diagram of a mist screen formation device concerning the present invention. It is sectional drawing and a top view of a guide part. It is a top view which shows the modification of a guide part. It is a conceptual block diagram which shows the mist screen forming apparatus which concerns on Embodiment 2 of this invention. It is a conceptual diagram which shows the mist screen forming apparatus shown in FIG. 25A15. It is a schematic diagram showing a guide portion, and a schematic diagram showing a form of forming a mist screen. FIG. 9 is a partial configuration diagram illustrating a mist screen forming device according to Embodiment 3 of the present invention. It is a schematic diagram which shows the structure of the mist screen formed by the guide part shown to FIG. 25A18. FIG. 9 is a configuration diagram illustrating a mist screen forming apparatus according to Embodiment 4 of the present invention.

(Embodiment 1)
FIG. 1 is a perspective view showing a mist screen connector according to Embodiment 1 of the present invention. FIG. 2 is a side view (a) and a plan view (b) showing the mist screen shown in FIG. FIG. 3 is a plan view showing a state where the mist screen connector is installed in the mist screen forming device. The mist screen connector 100 has a structure in which a pair of rectifying pieces 1 are connected to each other by a beam portion 2. Each rectifying piece 1 has a fan shape in plan view and a semicircular arc shape in side view. More specifically, each rectifying piece 1 is a gingko leaf-shaped flat plate curved at a predetermined curvature to form a curved surface 3 (outer surface 3) in an outer vertical direction (indicated by an arrow in the drawing) and to rectify the rectifier. The pieces 1 are connected to each other by a straight beam portion 2 and the curved plate-like body has a shape gradually converging and is integrated with the beam portion 2. With such a shape, the curved surfaces 3 of the pair of rectifying pieces 1 are provided substantially symmetrically and at predetermined intervals.

In addition, since each rectifying piece 1 has a plate-like body curved, a curved surface 4 is formed in an inner vertical direction (indicated by an arrow in the drawing). When the mist adheres to the inside of the curved surface 4 to form water droplets, the water droplets flow downward along the curved surface 4.

  The distance between the flow regulating pieces 1 and the flow regulating pieces 1 is determined by an end of the main body 51 of the mist screen forming device 50, specifically, a portion NM where no mist is discharged from the edge 50a of the discharge port to the edge 50b of the main body cover. More than twice. From another viewpoint, when the mist screen forming device 50 is disposed close to, the edge 50b of the discharge port 50c of one mist screen forming device 50A and the edge 50b of the discharge port 50c of the other mist screen forming device 50B. It is larger than the interval. On the other hand, if the distance between the rectifying pieces 1 is too wide, the mist screen will not be connected well. Therefore, the mist screen is appropriately determined according to the size of the mist screen and the like.

  The rectifying piece 1 has a predetermined area and determines the curvature and radius of the mist to be discharged so that the flow of the mist flows along the curved surface 3. In addition, even if mist hits the inner surface 4 and forms dew, the area and shape of the inner surface 4 are determined in detail so that water droplets caused by the dew flow downward along the inner surface 4. . Furthermore, the beam part 2 has a shape having a small cross-sectional area in a direction perpendicular to the mist flow direction so that the mist discharged from the discharge port 50c easily passes through the beam part 2. Preferably, it is in the shape of a bar or a strip that is vertically oriented.

  That is, the rectifying piece 1 needs a predetermined area in order to exhibit a function of bending the mist flowing on the outer surface 3 along the outer surface 3 and flowing the mist upward. In addition, even if the mist that hits the inner side surface 4 forms dew on the surface, the water droplets fall before reaching the beam portion 2, and the beam portion 2 supports the pair of rectifying pieces 1 and almost eliminates the flow of the mist. It has a shaft shape or a plate shape so that it passes without disturbing and does not cause condensation. And the beam part 2 is larger than at least the distance between the edge 50b of the discharge port 50c of the one mist screen forming device 50A and the edge 50b of the discharge port 50c of the other mist screen forming device 50B. Can be arranged over the gap between the edge 50b and the edge 50b. Since no drops are formed in the beam portion 2, even when the gap is located above the gap between the edges 50b, the drops do not fall into the gap. The floor is not wet by water.

  In addition, the beam portion 2 has a function of connecting the straightening pieces 1 to each other to facilitate handling, and also has a function of preventing mist from adhering to form water drops and dropping. If it is, it is not limited to the linear one as shown. Further, a hanging portion may be formed at a connecting portion between the beam portion 2 and the plate-shaped body so that water droplets do not move near the center of the beam portion 2 (not shown).

  FIG. 4 is an explanatory view showing the operation of the mist screen connector. First, two mist screen forming apparatuses 50 are arranged side by side so that the mist screen to be discharged forms a continuous surface. At this time, the main body 51 of one mist screen forming apparatus 50A and the main body 51 of the other mist screen forming apparatus 50B are arranged close to each other and brought into contact with each other, and the discharged mist screens S are arranged close to each other to form one large screen. Connect. Next, the mist screen connector 100 is placed over the discharge port 50c and over the gap between the main body edge 50b of the one mist screen forming device 50A and the main body edge 50b of the other mist screen forming device 50B. Place it so as to straddle it.

  Next, the mist M is discharged from the discharge port 50c. The discharged mist M bends and flows upward along the outer side surface 3 of the mist screen connector 100, and the mist screen S on the right side in the figure and the mist screen S on the left side in the figure above the mist screen connector 100 The ends are connected. Thereby, the mist screen S is connected neatly. Further, in the beam portion 2, the discharged mist M passes upward as it is and joins the connected mist screen S.

With the above configuration, the mist screen S is formed neatly and continuously near the edge of the mist screen forming apparatus 50, so that there is no loss in the image. Furthermore, even when the mist M hits the inner surface 4 of the flow regulating piece 1 and forms dew, water droplets flow along the inner surface 4 of the flow regulating piece 1 and fall into the discharge port 50c (the flow direction of the water droplet is indicated by an arrow in the figure). For this reason, a water drop does not drop on the connecting portion of the mist screen forming device 50.

(Embodiment 2)
FIG. 5 is a side view showing a mist screen connector according to Embodiment 2 of the present invention. FIG. 6 is a plan view showing the mist screen connector shown in FIG. In the mist screen connector 200, two curved plate-like bodies 201 having a semicircular cross section are arranged in a straight line, and the same curved plate-like body 201 is placed on the top and the top of the curved plate-like body 201. Structure. It is preferable that the width of the curved plate-like body 201 is substantially equal to the width of the mist screen S.

  The length of the mist screen connecting device 200 is preferably the length of the end portion of the mist screen forming device 50, specifically, the portion NM where no mist is discharged from the edge 50a of the discharge port 50c to the edge 50b of the main body cover. More than double. From another viewpoint, when the mist screen forming device 50 is disposed close to, the edge 50b of the discharge port 50c of one mist screen forming device 50A and the edge 50b of the discharge port 50c of the other mist screen forming device 50B. It is larger than the interval.

  Further, a connection plate 202 is provided at a lower end on the center side of the curved plate-like body 201. An attachment surface such as an adhesive tape is provided on the back surface of the connection plate 202. Further, wall portions 209 are formed at both ends of the connection plate 202 in the longitudinal direction. The length of the connection plate 202 is smaller than the length of the mist screen connector 200.

  FIG. 7 is a plan view showing a state where the mist screen connector is installed in the mist screen forming device. FIG. 8 is an explanatory view showing the operation of this mist screen connector. First, two mist screen forming apparatuses 50 are arranged side by side so that the mist screen to be discharged forms a continuous surface. At this time, the main body 51 of one mist screen forming apparatus 50A and the main body 51 of the other mist screen forming apparatus 50B are arranged close to each other (including the contact state; the same applies hereinafter). Next, the mist screen connecting device 200 is placed over the discharge port 50c and over the gap between the main body edge 50b of the one mist screen forming device 50A and the main body edge 50b of the other mist screen forming device 50B. Place it so as to straddle it. At this time, the mist screen connector 200 is attached and fixed to the main body edge 50b with the attachment surface.

  Next, the mist M is discharged from the discharge port 50c. The discharged mist M flows upward along the outer surface 203 of the curved plate-shaped body 201 of the mist screen connector 200, and the mist screen S on the right side in the figure and the mist on the left side in the figure above the mist screen connector 200. The ends with the screen S are connected. Thus, the mist screens S are formed neatly and continuously near the edges of the mist screen forming device 50, so that there is no loss of the image.

  Further, even when the mist M hits the inner surface 204 of the curved plate-like body 201 and forms dew, water droplets flow along the inner surface 204 and fall to the discharge port 50c. Even when water drops fall on the connection plate 202, the water flows from both ends of the connection plate 202 to the discharge port 50 c, and does not drop on the connection portion of the mist screen forming device 50 due to the wall 209.

(Embodiment 3)
FIG. 9 is a side view showing the mist screen connector according to the present invention. FIG. 10 is a plan view showing the mist screen connector shown in FIG. The mist screen connector 300 is formed of a curved plate 301 having a semicircular cross section. Preferably, the width of the curved plate 301 is substantially equal to the width of the mist screen.

  The length of the mist screen connector 300 is preferably the length of the end NM of the mist screen forming device 50, specifically, the portion NM where the mist from the edge 50a of the discharge port 50c to the edge 50b of the main body cover is not discharged. More than double. From another viewpoint, when the mist screen forming device 50 is disposed close to, the edge 50b of the discharge port 50c of one mist screen forming device 50A and the edge 50b of the discharge port 50c of the other mist screen forming device 50B. It is larger than the interval.

  FIG. 11 is a plan view showing a state where the mist screen connector is installed in the mist screen forming device. FIG. 12 is an explanatory diagram showing the operation of the mist screen connector. First, two mist screen forming apparatuses 50 are arranged side by side so that the mist screen to be discharged forms a continuous surface. At this time, the main body 51 of one mist screen forming apparatus 50A and the main body 51 of another mist screen forming apparatus 50B are arranged close to each other. Next, the mist screen connector 300 is placed over the discharge port 50c and over the gap between the main body edge 50b of the one mist screen forming device 50A and the main body edge 50b of the other mist screen forming device 50B. Place it so as to straddle it.

  Next, the mist M is discharged from the discharge port 50c. The discharged mist M bends and flows upward along the outer surface 303 of the curved plate-shaped body 301 of the mist screen connector 300, and the mist screen S on the right side in the figure and the left side in the figure above the mist screen connector 300 Of the mist screen S are connected to each other.

Thus, the mist screens S are formed neatly and continuously near the edges of the mist screen forming device 50, so that there is no loss of the image. Further, even when the mist M hits the inner side surface 304 of the curved plate-like body 301 and forms dew, water droplets flow along the inner side surface 304 and fall to the discharge port 50c.

(Embodiment 4)
FIG. 13 is a side view showing a mist screen connector according to Embodiment 4 of the present invention. FIG. 14 is a plan view showing the mist screen connector shown in FIG. The mist screen connector 400 has a semicircular or semicircular solid body in cross section. The width of the solid body is preferably substantially equal to the width of the mist screen.

  The length of the mist screen connecting device 400 is preferably the end NM of the mist screen forming device 50, specifically, the part NM where the mist from the edge 50a of the discharge port 50c to the edge 50b of the main body cover is not discharged. More than double. From another viewpoint, when the mist screen forming device 50 is arranged adjacent to the mist screen forming device 50A, the edge 50b of the discharge port 50c of one mist screen forming device 50A and the edge 50b of the discharge port 50c of the other mist screen forming device 50B. It is larger than the interval.

  FIG. 15 is a plan view showing a state in which the mist screen connector is installed in the mist screen forming device. FIG. 16 is an explanatory view showing the operation of the mist screen connector. First, two mist screen forming apparatuses 50 are arranged side by side so that the mist screen to be discharged forms a continuous surface. At this time, the main body 51 of one mist screen forming apparatus 50A and the main body 51 of another mist screen forming apparatus 50B are arranged close to each other. Next, the mist screen connecting device 400 is placed over the gap between the main body edge 50b of the one mist screen forming device 50A and the main body edge 50b of the other mist screen forming device 50B on the discharge port 50c. Place it so as to straddle it.

  Next, the mist M is discharged from the discharge port 50c. The discharged mist M bends and flows upward along the outer surface 403 of the solid body of the mist screen connector 400, and the mist screen S on the right side in the figure and the mist screen on the left side in the figure above the mist screen connector 400. The ends with S are connected. Thus, the mist screens S are formed neatly and continuously near the edges of the mist screen forming device 50, so that there is no loss of the image.

(Embodiment 5)
FIG. 17 is a partial perspective view showing a mist screen forming apparatus according to Embodiment 5 of the present invention. FIG. 18 is a partial side view showing the mist screen forming device shown in FIG. FIG. 19 is a partial plan view showing the mist screen forming device shown in FIG. The mist screen forming device 60 has a configuration in which the mist screen connecting device 100 according to the first embodiment is divided into two and provided on a main body 61 of the mist screen forming device 60.

The mist screen forming device 60 has a structure in which the rectifying piece 1 is arranged near the edge 50a of the discharge port 50c, and the rectifying piece 1 is fixed to the vicinity of the center of the edge 50b of the main body 61 by the beam portion 62. is there. Each rectifying piece 1 has a fan shape in plan view and a semicircular arc shape in side view. More specifically, each straightening piece 1 has a curved surface 3 (outer surface 3) in which the leaf-shaped flat plate of a ginkgo is curved at a predetermined curvature in an outer vertical direction (indicated by an arrow in the drawing). The curved flat plate is gradually converged and integrated with the beam portion 62. The beam portion 62 extends in the horizontal direction and bends downward at the position of the edge 50 b to be fixed to the main body 61.

In addition, since each rectifying piece 1 has a plate-like body curved, a curved surface 4 is formed in an inner vertical direction (indicated by an arrow in the drawing). When the mist adheres to the inside of the curved surface 4 to form a water droplet, the water droplet flows down along the inner surface 4.

  The distance between the rectifying piece 1 and the edge 50b of the main body 61 is equal to or greater than the portion NM where no mist is discharged from the edge 50a of the discharge port 50c to the edge 50b of the main body cover. From another viewpoint, when the mist screen forming device 60 is disposed adjacent to the mist screen forming device 50A, the edge 50b of the discharge port 50c of one mist screen forming device 50A and the edge 50b of the discharge port 50c of the other mist screen forming device 50B. It is greater than half the interval.

  The rectifying piece 1 has a predetermined area and determines its curvature and radius so that the flow of the mist to be discharged flows along the upper surface of the curved surface 3. The area and shape of the inner surface 4 are determined in detail so that water droplets caused by the dew fall down along the inner surface 4 even if the mist hits the inner surface 4 and dew forms. I do. Further, the beam portion 62 has a shape having a small cross-sectional area in a direction perpendicular to the mist flow direction so that the mist discharged from the discharge port 50c easily passes above the beam portion 62. Preferably, it is in the shape of a bar or a strip that is vertically oriented.

  That is, the rectifying piece 1 needs a predetermined area in order to exhibit a function of bending the mist flowing on the outer surface 3 along the curved surface 3 and flowing the mist upward. Even if dew condensation occurs, the water droplets fall before reaching the beam portion 62, and the beam portion 62 supports the rectifying piece 1 and allows the mist flow to pass therethrough with little disturbance, and prevents dew condensation from occurring. Then, it becomes shaft-shaped or plate-shaped.

  The operation of the mist screen connector will be described. First, two mist screen forming devices 60 are arranged side by side so that the mist screen to be discharged forms a continuous surface. At this time, the main body 61 of one mist screen forming apparatus 60A and the main body 61 of another mist screen forming apparatus 60B are arranged close to each other and brought into contact.

  In this state, the main body edge 50b of the one mist screen forming device 60A and the main body edge 50b of the other mist screen forming device 60B face each other, and a curved surface is formed in the vicinity of the mist discharge port 50c in the outer vertical direction. The rectifying piece 1 having 3 is located. Further, with such a structure, the curved surfaces 3 of the pair of rectifying pieces 1 are located substantially symmetrically and at a predetermined interval.

  Next, the mist M is discharged from the discharge port 50c. The discharged mist M bends and flows upward along the outer side surface 3 of the flow regulating piece 1, and ends of the mist screen S on the right side in the figure and the mist screen S on the left side in the figure are connected to each other. Further, in the beam portion 62, the discharged mist M passes upward as it is and joins the connected mist screen S.

Thereby, since the mist screen S is formed neatly and continuously near the edge of the mist screen forming device 50, there is no loss of the image. Furthermore, even when the mist M hits the inner surface 4 of the flow regulating piece 1 and forms dew, water droplets flow along the inner surface 4 of the flow regulating piece 1 and fall into the discharge port 50c (the flow direction of the water droplet is indicated by an arrow in the figure). For this reason, a water drop does not drop on the connecting portion of the mist screen forming device 60.

  Further, in the case of such a configuration, since the rectifying piece 1 is fixed to the main body 61, the mist screen S can be connected neatly only by correctly arranging the mist screen forming devices 60 in a line. Note that the rectifying pieces 1 are provided on both sides of the main body 61 (the other is not shown).

(Embodiment 6)
FIG. 20 is a partial side view showing a mist screen forming apparatus according to the present invention. FIG. 21 is a partial plan view showing the mist screen forming device shown in FIG. The mist screen forming device 70 has a configuration in which the mist screen connecting device 300 according to the third embodiment is divided into two parts and integrated with a main body 71 of the mist screen forming device 70 as a rectifying piece 72.

  The straightening piece 72 is a curved plate-like body having a sail-shaped cross section, and a leg 73 extending in the vertical direction is attached to the main body 71. The rectifying piece 72 has a predetermined area and determines its curvature and radius so that the flow of the mist to be discharged flows along the upper surface of the curved surface 303. The area and shape of the inner side surface 304 are determined in detail so that even if mist hits the inner side surface 304 and condenses, water droplets caused by the dew flow downward along the inner side surface 304. .

FIG. 22 is an explanatory diagram showing the operation of the mist screen forming device. First, two mist screen forming apparatuses 70 are arranged side by side so that the mist screen to be discharged forms a continuous surface. At this time, the main body 71 of one mist screen forming apparatus 70A and the main body 71 of the other mist screen forming apparatus 70B are arranged close to each other and brought into contact.

  In this state, the main body edge 50b of the one mist screen forming device 70A and the main body edge 50b of the other mist screen forming device 70B face each other, and are curved in the vicinity of the mist discharge port 50c and outside in the vertical direction. The rectifying piece 72 having the surface 303 is located. Further, with such a structure, the curved surfaces 303 of the pair of rectifying pieces 72 are positioned substantially symmetrically and at a predetermined interval.

  Next, the mist M is discharged from the discharge port 50c. The discharged mist M bends upward along the outer side surface 303 of the flow regulating piece 72, and at the upper portion, the ends of the mist screen S on the right side in the figure and the mist screen S on the left side in the figure are connected. Thus, the mist screen S is formed cleanly and continuously even near the edge of the mist screen forming apparatus 70, so that there is no loss of the image.

  Further, even when the mist M hits the inner surface 304 of the flow regulating piece 72 and forms dew, water droplets flow along the inner surface 304 of the flow regulating piece 1 and fall to the discharge port 50c (the flow direction of the water droplet is indicated by an arrow in the drawing). For this reason, a water drop does not drop on the connecting portion of the mist screen forming device 70.

  In the case of such a configuration, since the rectifying piece 72 is fixed to the main body 71, the mist screen S can be connected neatly only by correctly arranging the mist screen forming devices 50. The rectifying pieces 72 are provided on both sides of the main body 71 (not shown).

(Modification)
In the first to sixth embodiments, the curved surface may be a slope. Drawing 23 is an explanatory view showing the modification of the mist screen connector of the present invention, (a) is a perspective view, (b) is a side view, and (c) is a top view. In the mist screen connector 90, the rectifying piece 1 of the mist screen connector 100 according to the first embodiment has a triangular shape in a plan view and an oblique linear shape in a side view. The rectifying piece 91 forms slopes 93 and 94 in the outer vertical direction and the inner vertical direction while being symmetrically supported at predetermined intervals by the beam portion 2.

  The slope 93 in the outer vertical direction has a function of bending the mist along the slope 93 and flowing the mist upward. In addition, when the mist adheres to the inside slope 94 and becomes a water drop, the water drop flows down the slope 94. As described above, in the present invention, the curved surface and the inclined surface have substantially the same function. A configuration in which the curved surface according to the second to sixth embodiments is replaced with a slope is not shown.

(Example of mist screen configuration)
Next, an example of a mist screen forming apparatus using the mist screen connector will be specifically described. The reference numerals described below indicate the reference numerals shown in FIG. 25A1 and subsequent figures. The mist screen connecting device according to Embodiments 1 to 4 of the present invention is preferably used as a device for connecting a mist layer MS described below when the following mist screen forming devices are arranged side by side. Further, by using the mist screen forming apparatus according to the fifth and sixth embodiments of the present invention having the following configuration, a stable mist screen can be connected clearly.

FIG. 25A1 is a conceptual diagram showing a mist screen forming apparatus according to the present invention, in which (a) is a front view and (b) is a side view. FIG. 25A2 is a conceptual diagram illustrating a forming mode of the mist screen of the present invention. The mist screen forming apparatus 1000 forms a mist screen S above the apparatus. The mist screen forming apparatus 1000 generates mist using water supplied from a water tank 1001, and rectifies the generated mist. A mist rectifier 2 that performs rectification, a mist guide 3 that discharges the rectified mist into an upper space in a predetermined screen shape, and jets air upward and jets the air in a predetermined screen shape in the same direction as the mist. And an air ejection device 5 provided on both sides of the mist guide 3. An image is projected on the mist screen S by a general-purpose projector P.

  As shown in FIG. 25A2, the mist screen S is formed such that a screen-like or film-like mist is blown out above the apparatus, and film-like air is blown out on both sides of the mist. A three-layer structure including an AS, a mist layer MS, and an air layer AS is formed. By sandwiching the mist layer MS between the air layers AS, the mist can be prevented from diffusing upward (downstream of the flow), so that the mist screen S can be stabilized and a clear image can be formed. Specific embodiments of the present invention will be described below.

  FIG. 25A3 is a configuration diagram showing the mist screen forming device according to Embodiment 1 of the present invention. FIG. 25A4 is a side view of the mist screen forming device shown in FIG. 25A3. FIG. 25A5 is a sectional view taken along line AA of FIG. 25A3. FIG. 25A6 is a BB cross-sectional view of FIG. 25A3. The mist screen forming apparatus 100 includes a mist generator 1 arranged at the lower center of the inside of the main body casing 101, a mist rectifier 2 arranged at an upper part of the mist generator 1 for rectifying the generated mist, A mist guide 3 arranged above the mist rectifier 2 for ejecting rectified mist into a space above the mist guide 3; arranged on both sides of the mist generating device 1 for ejecting air upward and the air And an air ejection device 5 provided on both sides of the mist guide 3. These are provided inside the main body housing. The main body housing 101 is a substantially rectangular parallelepiped formed entirely of a metal plate and is long in one direction, and the upper longitudinal direction is a slope 101a. The air guide 4 and the mist guide 3 constitute a guide section 6.

As shown in the above-mentioned drawings and a partially enlarged cross-sectional view of FIG. 25A7, the mist generating device 1 includes a rectangular parallelepiped housing 11 that temporarily stores the generated mist and is long in one direction. And an ultrasonic transducer drive unit 12 for generating mist, which is disposed at the lower part of the tank, is provided above the tank 12 and immediately above the ultrasonic transducer 13 and is substantially cylindrical in its entirety. The spray nozzle 14 has a hole 15 for supplying a spray liquid to the ultrasonic vibrator 13 on the side surface and has a vertically opened spray nozzle 14, and centrifugal fans 40 provided on both sides of the side surface of the housing 11. The spray liquid is stored at the bottom of the above 11 to a water level at which the above 12 and 14 sink, and the spray liquid is mist-formed by the ultrasonic vibrator 13 attached below the above 14. The inside of the housing 11 is divided into two by a partition plate 15.

25A8 to 25A11 are exploded views of the mist screen forming device. FIG. 25A8 is a three-view drawing showing a state in which the air ejection device has been removed from the housing. FIG. 25A9-1 and FIG. 25A9-2 are an external view and a sectional view showing a state where the mist guide and the air guide are removed. FIG. 25A10 is an external view and a cross-sectional view illustrating a state where the storage chamber of the mist rectifier is removed. FIG. 25A11 is an external view and a cross-sectional view illustrating a state where the middle plate is removed.

FIGS. 25A11 (C) and (d) show a state in which a top plate serving as a partition wall with the mist generator 1 is exposed. As described above, a rectangular opening 17 is provided in the top plate 16 at the upper part of the housing 11 for connection with the mist generator 1. The opening 17 is located on one side with respect to the central axis in the longitudinal direction. Further, the centrifugal fans 40 are provided on both sides of the side surface of the housing 11 in order to supply air to each section in the divided housing 11. The ultrasonic vibrator 13 is supplied with power of a predetermined frequency from the 12 (not shown). A water supply port is connected to a lower portion of the housing 11, and the water supply port is connected to the spray liquid tank 1001 via a pump (not shown).

  A mist rectifier 2 is arranged above the mist generator 1. As shown in FIGS. 25A8 to 25A11, the mist rectifier 2 includes a passage chamber 21 and a storage chamber 22, and has a substantially triangular or mountain-shaped cross section in the lateral direction. The mist rectifier 2 forms a mist passage 23 inside as shown in the schematic passage diagram of FIG. 25A12 and FIG. 25A9-2 (d). A passage 23a is formed, and the passage 23b is bent and inverted at both ends, and a passage 23b adjacent to the passage 23a via the partition wall 24 is formed.

In other words, a partition plate (partition wall 24) is provided at the center in the longitudinal direction of the rectangular parallelepiped and the partition plate is opened at both ends to form a passage 23 through which mist flows from the center position to both sides and returns to the center direction again. In order to form such a passage 23, a partition wall 24 is provided in the center of the mist rectifier 2 in the center in the central longitudinal direction, and both ends thereof form a gap with respect to both side surfaces of the housing 21. Curved plates 25 that are curved in the horizontal direction to improve the flow of mist are provided at both ends in the longitudinal direction of the housing 20.

  More specifically, as shown in FIG. 25A10 (c), the partition wall 24 is provided on the lower surface of the top plate 25 of the housing 21. The partition wall 24 is provided at the center of the middle plate 26 in the longitudinal direction. Further, as shown in FIG. 25A11 (d), when the middle plate 26 is removed, the bottom plate 16 of the housing 21 is exposed, and the inlet 28 (opening 17) is exposed.

  Next, a bottom plate 27 having a rectangular mist inlet 28 of a predetermined shape is connected to a portion of the mist generator 1 that is connected to the opening 17 so as to cover the opening 17. The mist inlet 28 is located on one side of the longitudinal partition of the bottom plate 27. Further, as shown in FIG. 25A10 (d), a plurality of holes 29 are provided in the middle plate 26 of the housing 21 in a substantially linear shape. The hole 29 is small at the center in the longitudinal direction and becomes larger toward both ends. This is because the mist flowing from both ends hits at the center of the passage, and the pressure at the center of the passage becomes high. Therefore, the hole 29 at the center of the passage is made small, and the holes 29 at both ends where the pressure is lower than at the center. The reason for this is to make the movement of the mist to the storage chamber 22 provided at the upper part uniform by increasing.

  It is preferable to provide a difference of 2 to 3 times in area ratio between the hole 29 at the most central position and the hole 29 at the end portion. In this way, even if a pressure difference occurs in the passage 23, the mist can be uniformly moved to the storage chamber 22. Further, in the present embodiment, there are four holes 29 symmetrically in the longitudinal direction, and the interval between the holes 29 is the same as the interval between the first hole 29a and the second hole 29b. The distance between the hole 29b and the third hole 29c is wider than the distance between the third hole 29c and the fourth hole 29d. This is because if the hole 29 is moved toward the center, the mist is concentrated too much at the center. Further, the positions of the holes 29 in the short direction substantially match from the first hole 29a at the center to the fourth hole 29d. This is because it is positioned almost immediately below a discharge port to be described later.

  The storage chamber 22 has a substantially triangular cross section, for example, as shown in FIGS. 25A9-2 (c) and (d), and a band-shaped discharge port 71 is provided at the top. The dimension (thickness) of the discharge port 71 in the short direction is the thickness of the projection surface of the mist screen S. By making the cross section of the storage chamber 22 substantially triangular or mountain-shaped, mist that stays hardly occurs. Then, a desired flow velocity is obtained by squeezing the discharge port 71. The thickness (band width) of the discharge port 71 needs to be large enough to form the mist screen S, and it is not preferable that the discharge port 71 is too thick. In particular, when used as a rear projection type screen, an image is blurred. Therefore, the thickness of the discharge port 71 is set to be uniform at least in the projection range, and the flow rate of the mist can also maintain the thickness. Set to speed.

  As shown in FIG. 25A5, the air ejection devices 5 are arranged on both sides of the mist generation device 1. The air ejection device 5 is a device that ejects air containing no mist upward, and includes a housing 51 provided to be connected to the mist generation device 1 and a plurality of axial fans provided on a side surface of the housing 51. 52 and an air outlet 53 opened at the top of the housing 51. The air outlet 53 is inclined in accordance with the shape of the main body housing 101, and has a shape along the mountain-shaped slope of the storage chamber 22. Although this air ejection device 5 has a structure substantially separated on both sides by the mist generating device 1, as shown in FIG. 25A6, the internal space is connected in the space around the centrifugal fan 40 of the mist generating device 1, Therefore, the wind from the axial fan 52 is supplied into the casings 51 of both the air ejection devices 5. Thereby, the air jetted from the air jetting device 5 becomes more uniform.

  In addition, as long as the air ejection device 5 and the mist generating device 1 can be configured in the main body housing 101, the housings may be made independent from each other, or a structure in which some sheet metals are shared. good. That is, as long as the air ejection devices 5 can be configured on both sides of the mist generation device 1, the specific structure of the housing is not limited to the example shown in FIG.

  The mist guide 3 is connected to the discharge port 71 of the mist rectifier 2 as shown in FIG. 25A6. As shown in the enlarged view of FIG. 25A13 (FIG. 25A is a cross-sectional view, and FIG. 25B is a partial plan view), the mist guide 3 has air guides 4 of the air ejection device 5 on both sides thereof. Is composed. In the example shown in the figure, the mist guide 3 and the air guide 4 are configured as an integrated guide portion 6, and the honeycomb structure is formed by regularly arranging a large number of regular hexagonal cylindrical bodies. . Each of the tubular bodies has a role of a guide, and in this configuration, the tubular body located immediately above the discharge port 71 becomes the mist guide 3 (a portion surrounded by a chain line in FIG. 25A13 (b)), The tubular body located immediately above the air outlet 53 serves as the air guide 4.

  The thickness of the honeycomb structure (the length of the cylindrical body) is set so that the mist and air that have entered in a disturbed state are guided to regulate the flow, and the honeycomb structure can be ejected directly above the guide portion 6. Thereby, the mist screen S is ejected in a three-layer structure of the air layer AS, the mist layer MS, and the air layer AS as shown in FIG. 25A2. In the configuration of FIG. 5, the thickness of the air layer AS is larger than the thickness of the mist layer MS. Specifically, the air layer AS having a thickness of twice or more (10 times or less) the mist layer MS is formed. If the mist layer MS is thick, it is difficult to visually recognize an image during image formation by rear projection, and thus the mist layer MS is preferably thin.

The mist guide 3 is not limited to the honeycomb structure having a hexagonal cylindrical body. For example, as shown in FIG. 25A14 (a), a honeycomb structure in which a large number of cylindrical bodies 61 each having a square cross section may be regularly arranged. Alternatively, as shown in FIG. 25A14 (b), a honeycomb structure in which a large number of cylindrical bodies 62 having a triangular cross section are regularly arranged. Further, as shown in FIG. 25A14 (c), a honeycomb structure in which a band-like tubular body 64 provided with a rectifying fin 63 therein is connected in the width direction may be used. Note that the honeycomb structure of the present application includes at least the structure shown in FIG. 25A14. The height of the mist guide 3 must be large enough to allow the mist and air to flow stably. The cross-sectional area of each cylindrical body increases the guiding effect by reducing it, but if it is too small, the mist flow is hindered by water droplets attached to the cylindrical body, so it should be 20 mm square to 40 mm square. preferable.

  The mist screen forming apparatus 100 includes a mist control unit that controls generation of mist of the mist generation device 1 and control of driving of the centrifugal fan 40, and an air control unit that controls driving of the axial flow fan 52 of the air ejection device 5. And The mist control unit controls the water level in the housing 11 within a certain range by driving a pump while detecting the water level in the housing 11 based on the output of a water level sensor (not shown) attached to the housing 11. At the same time, power is supplied to the ultrasonic transducer drive unit 12 to adjust the amount of mist generated. In addition, the centrifugal fan 40 capable of adjusting the air volume is driven to control the amount and speed of mist discharge from the discharge port 71. The air control unit controls the driving of the axial fan 52 to adjust the amount and speed of air blown out from the air outlet 53.

  Next, the operation of the mist screen forming apparatus 100 will be described. In forming the screen, first, water is supplied into the housing 11 from the spray liquid tank 1001 via a pump, and the ultrasonic vibrator driving unit 12 is driven to generate mist in the housing 11. This mist is ejected from the tip of the spray nozzle 14 into the housing 11. Air is strongly introduced into the housing 11 by the centrifugal fan 40. The mist in the housing 11 moves into the mist rectifier 2 from the upper opening 17 (mist inlet 28).

The mist that has moved into the mist rectifier 2 first flows through the internal passage 23 from the vicinity of the center toward both left and right ends, smoothly reverses by the curved plates 25 at both ends, and returns to the center again. Then, the mist flows from both sides collide near the center of the passage 23. In the flow of the passage 23, the mist moves from the plurality of holes 29 provided in the upper part of the passage 23 to the storage chamber 22. The plurality of holes 29 have large areas at both ends and become smaller toward the center, so that the mist is uniformly supplied to the storage chamber 22. When the mist accumulates in the storage chamber 22, the mist is discharged from the discharge port 71 at a constant flow rate by the internal pressure. The discharged mist is guided by the mist guide 3 so that the flow becomes clear, and the mist is ejected upward from its upper end in a screen shape.

  On the other hand, in the air ejection device 5, a large number of axial fans 52 are driven to introduce a large amount of air into the housing 51. The introduced air is blown out from an air outlet 53 opened in the upper part of the housing 51 to reach the air guide 4, where the flow is regulated by the air guide 4 and is blown upward from the upper end. This air is ejected and formed on both sides of the screen by the mist, thereby creating a state where the mist screen is sandwiched. It is preferable that the flow rate of the air be faster than the flow rate of the mist. The flow velocity adjustment is performed by controlling the driving of the axial fan 52 by the air control unit.

  Further, the air ejection device 5 sandwiches the mist layer MS with the air layer AS to prevent the mist of the mist layer MS from diffusing. That is, a screen-like space is formed by the air layer AS, and the mist is confined in the space. In this way, the diffusion of the mist layer MS is prevented, and the thickness of the mist layer MS can be maintained to a desired height. As a result, the image projected on the mist layer MS can be stabilized in the up-down direction (the mist flow direction). Further, since the air layer AS is thicker than the mist layer MS, even if the air layer receives a flow of surrounding air in a use environment, for example, a wind generated when an air conditioner or a person moves, the wind is generated on the surface layer of the air layer AS. Can be absorbed and taken into the flow, so that the mist layer MS is less affected by the air condition in the use environment. In particular, the flow of the air layer AS is fast, and the effect is more enhanced when the air layer AS is thick.

  An image is projected by the projector P onto the mist screen S thus formed. The projection light passes through the air layer AS of the mist screen S, is reflected by the surface of the mist layer MS on the side where the projector P is installed, and forms a desired image or video.

(Embodiment 2)
FIG. 25A15 is a conceptual configuration diagram illustrating a mist screen forming apparatus according to Embodiment 2 of the present invention. FIG. 25A16 is a conceptual diagram showing the mist screen forming device shown in FIG. 25A15. The mist screen forming apparatus 100 forms a mist screen S in a downward direction. The mist generating apparatus 210 generates mist using water supplied from a water tank from the upper side of the apparatus. A mist rectifier 220 for rectifying the mist, a mist guide 203 for ejecting the rectified mist upward in a predetermined shape, and an air guide 204 for ejecting the air upward and ejecting the air in a predetermined shape are formed by the mist guide 203. The air ejection devices 205 provided on both sides are arranged. An image is projected on the mist screen S by a general-purpose projector. The air guide 204 and the mist guide 203 constitute a guide section 206.

  The mist generating device 210 temporarily stores the generated mist, and stores a cuboid housing 211 that is long in one direction and a spray liquid surrounded by the bottom and side surfaces of the housing 211 and the partition plate 212. A tank portion 201, an ultrasonic vibrator drive unit 213 disposed on the bottom surface of the tank 201, and a directly provided truncated ultrasonic vibrator drive unit 213, the whole of which is substantially cylindrical and has a truncated cone shape in side view. And a centrifugal fan 240 provided on the side surface of the housing 211. An ultrasonic vibrator is attached to the connection between the spray nozzle 230 and the ultrasonic vibrator drive unit 213 (not shown), and the spray liquid is supplied to the ultrasonic vibrator on the side of the spray nozzle 230. It has a hole (not shown).

The lower bottom plate of the housing 211 is open for connection with the mist rectifier 220. Further, the ultrasonic transducer driving unit 213 is connected to a driving device that supplies electric power of a predetermined frequency (not shown). A water supply port is connected to a lower portion of the tank 201. The water supply port is connected to a spray liquid tank via a pump (not shown).

  A mist rectifier 220 including a passage chamber 221 and a storage chamber 222 is disposed below the mist generator 210. As shown in FIG. 25A16, the mist rectifier 220 has a substantially inverted triangular or inverted chevron cross section in the short direction. The mist rectifier 220 has a mist passage 223 formed therein, and an opening provided at a lower portion of a bottom plate of the housing 211 communicates as an inlet 228. Specifically, the passage 223 is formed such that a passage 223 is formed from one end in the longitudinal direction to the other end, and is bent and inverted at the other end to form a passage 223 adjacent to the passage via a partition 224. The other end is provided with a curved plate 225 that bends in the horizontal direction to improve the flow of the mist.

  A plurality of holes 229 are provided in the bottom plate of the housing 211 of the path 223. This hole 229 is formed so that the downstream side of the passage 223 becomes small. This is because the mist hits the wall at the end of the passage and the pressure at the end of the passage increases, so that the hole 229 at the end of the passage is made smaller and the hole 229 on the upstream side is made larger, so that the storage provided at the lower part is further provided. The movement of the mist to the chamber 222 is made uniform.

  The storage chamber 222 has a substantially triangular cross section, and a band-shaped discharge port 271 is provided at the lower top. The dimension (thickness) of the discharge port 271 in the short direction is the thickness of the projection surface of the mist screen S. Since the storage chamber 222 has a substantially inverted triangle or inverted mountain shape in cross section, no mist stays. Then, a desired flow velocity can be obtained by narrowing the discharge port 271. The thickness of the discharge port 271 is set from the same viewpoint as in the first embodiment.

  The air ejection devices 205 are arranged on both sides of the mist generation device 210 at a predetermined distance. The air ejection device 205 has a structure for ejecting air downward, and has a box-shaped housing 251, a plurality of axial fans 252 provided on a side surface of the housing 251, and an opening at a lower portion of the housing 251. And an air outlet 253.

  The mist guide 203 is connected to the discharge port 271 of the mist rectifier 220. The air guide 204 is connected to the air ejection port 253 of the air ejection device 205. Further, as shown in FIG. 25A17 (a), the mist guide 203 and the air guide 204 form the air guide 204 on both sides of the mist guide 3 at a predetermined interval. In the example shown in the figure, the mist guide 203 and the air guide 204 are integrated, and a honeycomb structure is formed in which a large number of regular hexagonal cylindrical bodies are regularly arranged. Each of the cylindrical bodies has a role of a guide, and in this configuration, as shown in FIG. 25A17 (b), the cylindrical body located immediately below the discharge port 271 becomes the mist guide 203, and the air ejection port The tubular body located immediately below 253 is the air guide 204. No cylindrical body is provided between the mist guide 203 and the air guide 204 (the non-guide area 260).

  The thickness of the honeycomb structure (the length of the cylindrical body) is set so as to guide the mist and air that have entered in a turbulent state, regulate the flow, and eject the mist and air immediately below the mist guide 203. As a result, the mist screen S has a five-layer structure of an air layer AS, an intermediate layer TS, a mist layer MS, an intermediate layer TS, and an air layer AS, as shown in FIG. 25A17 (c). The intermediate layer TS is a space region in which the flow of air generated between the mist layer MS and the air layer AS is not actively generated.

In the configuration of FIG. 5, the thickness of the air layer AS is larger than the thickness of the mist layer MS. Specifically, the air layer AS having a thickness of twice or more (10 times or less) the mist layer MS is formed. If the mist layer MS is thick, it is difficult to visually recognize an image during image formation by rear projection, and thus the mist layer MS is preferably thin. The mist guide 203 is not limited to a honeycomb structure having a hexagonal cylindrical body.

  Next, the operation of the mist screen forming apparatus 200 will be described. Water is supplied from the spray liquid tank to the tank 201, and the ultrasonic vibrator is driven to generate mist in the tank. This mist is ejected from the tip of the spray nozzle 203 into the housing 211. Air is strongly introduced into the housing 211 by the centrifugal fan 204.

The mist in the housing 211 moves into the mist rectifier 220 from the lower opening (mist inlet 228). The mist that has moved into the mist rectifier 220 advances from one end of the passage 223, flows so as to be neatly inverted and returned by the curved plate 225 at the other end, and hits a wall at one end. Then, the mist flowing through the passage 223 moves from the plurality of holes 229 provided in the lower part of the passage 223 to the storage chamber 222. Since the plurality of holes 229 have a larger area on the upstream side and become smaller on the downstream side, the mist is uniformly supplied to the storage chamber 222. When the mist accumulates in the storage chamber 222, the mist is discharged from the discharge port 271 at a constant flow rate by the internal pressure. The discharged mist is guided by the mist guide 203 to make the flow uniform, and is ejected downward in a screen shape.

  On the other hand, in the air ejection device 205, a large number of axial fans 252 are driven to introduce a large amount of air into the housing 251. The introduced air is ejected from an air ejection port 253 opened at a lower portion of the housing 251 and reaches the air guide 204. The jetted air has its flow adjusted by the air guide 204 and is jetted downward from the lower end of the air guide 204. This air is ejected and formed on both sides of the screen by the mist, and forms a state in which the mist screen is sandwiched via the intermediate layer TS. It is preferable that the flow rate of the air be substantially equal to the flow rate of the mist. The flow velocity adjustment is performed by controlling the driving of the axial fan 252 by the air control unit.

  In this way, even if the air layer AS receives wind in the use environment generated when an air conditioner or a person moves, the surface layer of the air layer AS can absorb the wind and take it into the flow. Less susceptible to environmental wind currents. Further, since the intermediate layer TS is formed between the air layer AS and the mist layer MS, the portion serves as a buffer, and the mist layer MS is less likely to be affected by the disturbance of the air layer AS.

  An image is projected by the projector P onto the mist screen S thus formed. The projection light passes through the air layer AS of the mist screen S, is reflected by the surface of the mist layer MS on the side where the projector P is installed, and forms a desired image or video.

(Embodiment 3)
FIG. 25A18 is a partial configuration diagram illustrating a mist screen forming apparatus according to Embodiment 3 of the present invention. This mist screen forming apparatus has substantially the same configuration as the mist screen forming apparatus 100 according to the first embodiment, but is characterized in that the air layer AS to be formed is formed in two layers on both sides of the mist layer MS. is there.

  FIG. 2 shows a plan view of a guide portion for forming the air layer AS in two layers. The guide portion 360 has substantially the same configuration as the guide portion 6 shown in the first embodiment, and is arranged at the air ejection port 53 of the air ejection device 5 to form the inner air layer AS on the mist layer MS side. The cylindrical body is not provided in the intermediate region 352 corresponding to the intermediate layer TS formed as a result of the ejection, including the inner region 350 that forms the outer layer 351 that forms the outer air layer AS that becomes the outer side. . That is, an intermediate region 352 is provided in a portion corresponding to the air guide 4 of the guide portion 6 of the first embodiment, and a tubular body is not provided in the intermediate region 352 (the same state as when a lid is provided). Air is jetted from the air jetting section 53 of the air jetting device 5. Other configurations are the same as those of the first embodiment, and illustration and description are omitted. In addition, the size of each cylindrical body forming the inner region 350 and the outer region 351 may be different, or the length may be different. The portion where the mist layer MS is formed is the mist layer formation region 353.

  FIG. 25A19 is a schematic view showing the structure of the mist screen S formed by the guide section shown in FIG. 25A18. The mist screen S is formed from the mist rectifier 2 using the guide portion 360, and the inner air layer AS1 is formed on both sides of the mist screen S by the inner region 350 of the guide portion. In this state, the inner air layer AS1 is formed on both sides of the mist layer MS in substantially the same manner as in the first embodiment, and a state in which the mist layer MS is sandwiched is formed. The inner air layer AS1 has the same function and effect as the air layer AS of the first embodiment. That is, the mist layer MS is sandwiched by the inner air layer AS1 to prevent mist diffusion of the mist layer MS, and the thickness of the mist layer MS can be maintained to a desired height. As a result, the image projected on the mist layer MS can be stabilized in the up-down direction (the mist flow direction).

Further, an outer air layer AS2 is formed by the outer region. The outer air layer AS2 absorbs the flow of air from an external air conditioner or fan and pushes it upward. Since the intermediate layer TS serving as a buffer is formed between the outer air layer AS2 and the inner air layer AS1, it is less susceptible to turbulence in the flow of the outer air layer AS2. As the thickness (width) of the intermediate layer TS increases, the influence of the wind of the external environment can be suppressed.

(Embodiment 4)
FIG. 25A20 is a configuration diagram illustrating a mist screen forming apparatus according to Embodiment 4 of the present invention. The intermediate layer TS in the configuration of the third embodiment is eliminated (the inner air layer AS1 and the outer air layer AS2 are adjacent to each other), and further, air that blows air to each of the inner air layer AS1 and the outer air layer AS2. The ejection device 5 and the air ejection port 53 may be provided separately. As shown in the figure, in this mist screen forming apparatus, an air ejection device 5a and an air ejection device 5b having substantially the same configuration as those of the above embodiment are provided on both sides of the mist generator and the mist rectifier 2, respectively.

  The air ejection port of the air ejection device 5a and the air ejection port of the air ejection device 5b are provided on both sides of the ejection port 71. The guide portion 6 has a honeycomb structure in which a large number of cylindrical bodies having a hexagonal cross section are arranged in the same manner as described above. The tubular body located directly above the discharge port 71 serves as the mist guide 3, and the tubular body located immediately above the air ejection port 53a serves as the air guide 4a for the inner air layer AS1. The tubular body located immediately above the air outlet 53b serves as an air guide 4b for the outer air layer AS2.

  The mist generated by the mist generator is rectified by the mist rectifier 2 and is discharged from the discharge port 71 by the mist guide 3 in a screen form. The air ejection devices 5a and 5b eject air from the air ejection ports 53a and 53b, respectively, to form the inner air layer AS1 and the outer air layer AS2. The inner air layer AS1 and the outer air layer AS2 form a state where the mist layer MS is sandwiched.

Further, the axial fans of the air ejection devices 5a and 5b are driven and controlled such that the flow speed of the outer air layer AS2 is faster than the flow speed of the inner air layer AS1. By making the flow rate of the outer air layer AS2 faster than the flow rate of the inner air layer AS1, the diffusion of the air layer AS1 at the upper part of the mist screen is prevented, and accordingly, the diffusion of the inner mist layer MS is prevented. The image projected on the layer MS can be further stabilized in the vertical direction (the direction of mist flow).

Further, a humidifier for supplying high-humidity air to the inside of the housing 51 in the air ejection device 5a is provided (not shown), and high-humidity air that does not become a mist is discharged to thereby form the inner air layer AS1. May be formed. As described above, the mist layer MS is sandwiched between the high-humidity inner air layers AS1, and the humidity gradient between the mist layer MS and the inner air layer AS1 is smaller than when normal air is discharged into the inner air layer AS1. As a result, the diffusion of the mist layer MS is prevented, and as a result, the image projected on the mist layer MS can be further stabilized in the vertical direction (the direction of mist flow).

(Appendix 1)
A mist screen forming apparatus that discharges a mist supplied from a mist generating unit in a screen shape,
Mist discharging means for discharging mist in a screen shape in one direction to form a mist layer on a space,
Air ejecting means for forming an air layer sandwiching the mist layer by ejecting air containing no mist in substantially the same direction as the mist ejection direction and on both sides of the mist layer,
A mist screen forming apparatus comprising:
(Appendix 2)
The mist discharge means has a band-shaped mist discharge port for discharging the mist, and the air discharge means has a band-shaped air discharge port provided adjacent to both sides of the mist discharge port while discharging air. The mist screen forming apparatus according to claim 1, wherein:
(Appendix 3)
The mist screen forming apparatus according to claim 1 or 2, wherein a mist guide formed of a honeycomb structure formed by arranging a large number of cylindrical bodies in a regular manner is connected to the mist discharge port. .
(Appendix 4)
Furthermore, an air guide composed of a honeycomb structure formed by arranging a large number of cylindrical bodies in a regular manner is connected to the air ejection port. Mist screen forming equipment.
(Appendix 5)
Further, a storage portion for storing the mist, and a passage for passing the mist supplied from the mist generating means, and the passage has a plurality of holes communicating with the storage portion for storing the mist,
The mist screen forming apparatus according to any one of additional items 1 to 4, wherein the mist discharging unit discharges the mist stored in the storage unit in a screen shape.
(Appendix 6)
The mist screen forming apparatus according to claim 5, wherein the plurality of holes are such that holes downstream of the mist flow in the passage are smaller than holes upstream.
(Appendix 7)
Further, the mist discharge means has a band-shaped mist discharge port for discharging the mist,
The mist outlet is provided in the storage unit,
The mist screen forming apparatus according to claim 6, wherein the plurality of holes are arranged substantially along a longitudinal direction of the mist discharge port.

100 Mist screen connector 1 Rectifying piece 2 Beam 3 Curved surface (outer surface)
4 curved surface (inner surface)
50 Mist screen forming device

Claims (6)

One mist screen forming device and another mist screen forming device, in a state where each mist screen forming device is disposed in the direction in which the mist screen formed by discharging mist is continuous, the one mist screen forming device It is arranged between the edge and the edge of another mist screen forming device,
A mist screen connector, comprising a pair of curved surfaces or slopes in the outer vertical direction, wherein the pair of curved surfaces and slopes are provided substantially symmetrically and at predetermined intervals in the connection direction.   The mist screen connecting device according to claim 1, further comprising a pair of curved surfaces or inclined surfaces in an inner vertical direction.   3. The mist screen connection according to claim 1, wherein a pair of rectifying pieces having a curved surface or an inclined surface in the outer vertical direction are provided in a pair, and the rectifying pieces are connected by a beam portion. 4. Utensils.   One mist screen forming device and another mist screen forming device, in a state where each mist screen forming device is arranged in the direction in which the mist screen formed by discharging mist is continuous, the one mist screen forming device A mist screen forming apparatus characterized in that a main body edge and a main body edge of another mist screen forming apparatus face each other, and a curved surface or a slope is provided near an outlet of the mist and in an outer vertical direction.   5. The mist screen forming device according to claim 4, further comprising a curved surface or a slope in an inner vertical direction. The mist screen forming apparatus according to claim 4, wherein the curved surface or the inclined surface is provided as a rectifying piece by a beam at an edge of a main body arranged close to the mist screen forming apparatus.

Images