JP2023145465A - Mist screen coupling jig and mist screen formation device - Google Patents

Abstract

To provide a mist screen formation device by which a uniformity of liquid densities of a mist display can be obtained.SOLUTION: A mist screen formation device 1000, which forms a mist screen S above the device, is constituted of a mist generator 1 generating mist by using water supplied from a water tank 1001, a mist rectifier 2 rectifying the generated mist, a mist guide 3 discharging mist after rectification onto a space above in a predetermined screen form, and an air jet device 5 provided on both sides of the mist guide 3 with an air guide 4 jetting air above and jetting the air in a predetermined form in the same direction as the mist. The mist screen S to be formed forms a three-layer structure consisting of an air layer, a mist layer, and an air layer by the jet of screen-form or membrane-form above the device and the jet of membrane-form air onto both sides.SELECTED DRAWING: Figure 25A1

Description

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

Conventionally, a mist display device as disclosed in Patent Document 1 has been proposed. This mist display device solves the problem that the projected image is distorted due to disturbance of the droplet film/liquid film due to disturbance wind, and has a projection image estimated distortion data calculation unit that calculates the distortion of the image projected on the droplet film. This problem is solved by a configuration that includes: an image transformation matrix generation section that calculates a correction value to reduce the calculated distortion; and a correction processing section that corrects the image projected onto the droplet film using the calculated correction value. It is assumed that

Japanese Patent Application Publication No. 2016-46711

Here, when expanding the projected 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 of connecting mist displays. When two mist displays 900 are arranged in a line and the droplet films are connected, the droplet film of the mist display S is not formed up to the end of the device main body 901, so there is a region 902 where no droplet film exists in the connection part. , or even if the droplet films coalesce as they move upward, a striped region of low droplet density will occur, making it impossible to achieve uniformity in the droplet density of the mist display S. There's a problem. The present invention has been made to solve such problems.

In the mist screen connector according to the present invention, one mist screen forming device and another mist screen forming device are arranged close to each other in the direction in which the mist screens formed by discharging mist from each mist screen forming device are continuous. The mist screen forming device is disposed across the edge of the one mist screen forming device and the edge of the other mist screen forming device, and has a pair of curved surfaces or slopes on the outside in the up and down direction, and A pair of curved surfaces and sloped surfaces are provided approximately symmetrically and at a predetermined interval in the connection direction.

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

In the mist screen forming device according to the present invention, 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 from each mist screen forming device are continuous. The edge of the main body of the one mist screen forming device and the edge of the main body of the other mist screen forming device are opposed to each other, and a curved surface or 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 sloped surface is provided as a rectifying piece by a beam portion on the edge of the main body of the mist screen forming device which is disposed close to the mist screen forming device.

FIG. 1 is a perspective view showing a mist screen connector according to Embodiment 1 of the present invention. 2 is a side view showing the mist screen shown in FIG. 1. FIG. FIG. 3 is a plan view showing a state in which the mist screen connector is installed in the mist screen forming device. It is an explanatory view showing operation of this mist screen connector. It is a side view which shows the mist screen connector based on Embodiment 2 of this invention. 6 is a plan view showing the mist screen connector shown in FIG. 5. FIG. FIG. 3 is a plan view showing a state in which the mist screen connector is installed in the mist screen forming device. It is an explanatory view showing operation of this mist screen connector. FIG. 2 is a side view showing a mist screen connector according to the present invention. 10 is a plan view showing the mist screen connector shown in FIG. 9. FIG. FIG. 3 is a plan view showing a state in which the mist screen connector is installed in the mist screen forming device. It is an explanatory view showing operation of this mist screen connector. It is a side view which shows the mist screen connector based on Embodiment 4 of this invention. 14 is a plan view showing the mist screen connector shown in FIG. 13. FIG. FIG. 3 is a plan view showing a state in which the mist screen connector is installed in the mist screen forming device. It is an explanatory view showing operation of this mist screen connector. It is a partial perspective view which shows the mist screen forming apparatus based on Embodiment 5 of this invention. 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. FIG. 1 is a partial side view showing a mist screen forming device according to the present invention. 21 is a partial plan view showing the mist screen forming device shown in FIG. 20. FIG. FIG. 3 is an explanatory diagram showing the operation of this mist screen forming device. It is an explanatory view showing a modification of the mist screen connector of the present invention. It is an explanatory view showing an example of the case where mist displays are connected. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 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. 2 is a conceptual diagram showing a form of a mist screen according to the present invention. 1 is a configuration diagram showing a mist screen forming apparatus according to Embodiment 1 of the present invention. FIG. 25 is a side view of the mist screen forming device shown in FIG. 25A3. 25A3 is a sectional view taken along line AA in FIG. 25A3. 25A3 is a sectional view taken along line BB in FIG. 25A3. FIG. 25A is a partially enlarged sectional view of FIG. 25A5. It is an exploded view of the mist screen forming device, and is a three-sided view showing a state in which the air blowing device is removed from the casing. FIG. 2 is an exploded view of the mist screen forming device, and is an external view and a sectional view showing a state in which a mist guide and an air guide are removed. It is an exploded view of a mist screen forming device, and is an external view and a sectional view showing a state where a storage chamber of a mist rectifier is removed. FIG. 2 is an exploded view of the mist screen forming device, and is an external view and a sectional view showing a state with the middle plate removed. FIG. 2 is a schematic diagram of a passageway of the mist screen forming device according to the present invention. FIG. 4 is a cross-sectional view and a plan view of the guide portion. It is a top view which shows the modification of a guide part. FIG. 2 is a conceptual configuration diagram showing a mist screen forming device according to Embodiment 2 of the present invention. FIG. 25 is a conceptual diagram showing the mist screen forming device shown in FIG. 25A15. They are a schematic diagram showing a guide part and a schematic diagram showing a form of a mist screen. It is a partial block diagram which shows the mist screen forming apparatus based on Embodiment 3 of this invention. FIG. 25 is a schematic diagram showing the structure of a mist screen formed by the guide portion shown in FIG. 25A18. It is a block diagram which shows the mist screen forming apparatus based on Embodiment 4 of this 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. 1. FIG. 3 is a plan view showing the mist screen connector installed in the mist screen forming device. This 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 has a ginkgo leaf-shaped flat plate that is curved at a predetermined curvature to form a curved surface 3 (outer surface 3) in the outer vertical direction (indicated by an arrow in the figure) and rectifying the flow. The pieces 1 are connected to each other by a straight beam part 2, and the curved plate-shaped body gradually converges and is integrated into the beam part 2. By adopting such a shape, the curved surfaces 3 of the pair of straightening pieces 1 are provided approximately symmetrically and at a predetermined interval.

Moreover, since each rectifying piece 1 is a curved plate-like body, a curved surface 4 is formed in the inner vertical direction (indicated by an arrow in the figure). This inner curved surface 4 causes the water droplets to flow downward along the curved surface 4 when the mist adheres and becomes water droplets.

The distance between the straightening pieces 1 is determined by the distance between the ends of the main body 51 of the mist screen forming device 50, specifically, the portion NM from the end edge 50a of the discharge port to the end edge 50b of the main body cover from which mist is not discharged. That's more than double. From another point of view, when the mist screen forming devices 50 are arranged close to each other, the edge 50b of the outlet 50c of one mist screen forming device 50A and the edge 50b of the outlet 50c of the other mist screen forming device 50B are is larger than the interval. On the other hand, if the distance between the rectifier pieces 1 is too wide, the mist screen will not connect well, so it should be determined appropriately depending on the size of the mist screen, etc.

The rectifier piece 1 has a predetermined area, and its curvature and radius are determined so that the flow of mist to be discharged flows along the curved surface 3. Furthermore, the area and shape of the inner surface 4 shall be determined in detail so that even if the mist hits the inner surface 4 and condenses, the water droplets resulting from the condensation will flow downward along the inner surface 4. . Furthermore, so that the mist discharged from the discharge port 50c can easily pass through the beam section 2, the beam section 2 is shaped to have a small cross-sectional area in a direction perpendicular to the flow direction of the mist. Preferably, it has a rod shape or a strip shape extending in the vertical direction.

That is, the rectifying piece 1 needs a predetermined area in order to perform the function of bending the mist flowing along the outer surface 3 and flowing it upward. Furthermore, even if the mist that hits the inner surface 4 condenses on the surface, the water droplets will fall before reaching the beam portion 2, and the beam portion 2 supports the pair of rectifying pieces 1 and almost controls the flow of the mist. It is shaped like a shaft or a plate to allow it to pass through without being disturbed and to prevent condensation. The beam portion 2 is at least larger than the distance between the edge 50b of the outlet 50c of the first mist screen forming device 50A and the edge 50b of the outlet 50c of the other mist screen forming device 50B. It can be arranged across the gap between the end edges 50b of the two end edges 50b. Since drops do not occur in the beam portion 2, drops will not fall into the gap even if it is located above the gap between the end edges 50b. The floor will not get wet due to water dripping.

Note that the beam portion 2 has the function of connecting the rectifier pieces 1 to each other to make handling easier, and also to prevent mist from adhering to water droplets and dripping. If so, it is not limited to a straight line as shown. Further, a hanging portion may be formed at the connecting portion between the beam portion 2 and the plate-like body to prevent water droplets from moving near the center of the beam portion 2 (not shown).

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

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

With the above configuration, the mist screen S is neatly and continuously formed even near the edge of the mist screen forming device 50, so that no defects occur in the image. Further, even if the mist M hits the inner surface 4 of the rectifying piece 1 and condenses, water droplets flow along the inner surface 4 of the rectifying piece 1 and fall into the discharge port 50c (the flow direction of the water droplets is indicated by an arrow in the figure). Therefore, water droplets do not drip onto 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. 6 is a plan view showing the mist screen connector shown in FIG. 5. FIG. This mist screen connector 200 has two curved plate-like bodies 201 each having a semicircular cross section arranged in a straight line, and similar curved plate-like bodies 201 are placed on the tops of the curved plate-like bodies 201. It is a structure. The width of the curved plate-like body 201 is preferably approximately equal to the width of the mist screen S.

The length of the mist screen connector 200 is preferably set to 2 of the end of the mist screen forming device 50, specifically, the portion NM from the end edge 50a of the discharge port 50c to the end edge 50b of the main body cover from which mist is not discharged. That's more than double that. From another point of view, when the mist screen forming devices 50 are arranged close to each other, the edge 50b of the outlet 50c of one mist screen forming device 50A and the edge 50b of the outlet 50c of the other mist screen forming device 50B are is larger than the interval.

Furthermore, a connecting plate 202 is provided at the lower end of the curved plate-like body 201 on the center side. The back surface of this connection plate 202 is provided with an adhesive surface for adhesive tape or the like. Additionally, wall portions 209 are formed at both ends of the connection plate 202 in the longitudinal direction. The length of the connecting plate 202 is less than the length of the mist screen connector 200.

FIG. 7 is a plan view showing the mist screen connector installed in the mist screen forming device. FIG. 8 is an explanatory diagram showing the operation of this mist screen connector. First, two mist screen forming devices 50 are arranged side by side so that the mist screens to be ejected form a continuous surface. At this time, the main body 51 of one mist screen forming device 50A and the main body 51 of the other mist screen forming device 50B are placed close to each other (including a state of contact; the same applies hereinafter). Next, the mist screen connector 200 is placed above the discharge port 50c and across the gap between the main body edge 50b of the first mist screen forming device 50A and the main body edge 50b of the other mist screen forming device 50B. Place it so that it straddles 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-like body 201 of the mist screen connector 200, and is connected to the mist screen S on the right side in the figure and the mist on the left side in the figure at the upper part of the mist screen connector 200. The ends of the screen S are connected to each other. As a result, the mist screens S are neatly and continuously formed even near the edges of the mist screen forming device 50, so that no defects occur in the image.

Furthermore, even if the mist M hits the inner surface 204 of the curved plate-shaped body 201 and condenses, water droplets flow along the inner surface 204 and fall into the discharge port 50c. Further, even if water droplets fall on the connection plate 202, they flow from both ends of the connection plate 202 to the discharge port 50c, and the wall portion 209 prevents the water droplets from dripping onto the connecting portion of the mist screen forming device 50.

(Embodiment 3)
FIG. 9 is a side view showing a mist screen connector according to the present invention. FIG. 10 is a plan view of the mist screen connector shown in FIG. 9. This mist screen connector 300 consists of a curved plate-like body 301 with a semicircular cross section. The width of the curved plate-like body 301 is preferably approximately equal to the width of the mist screen.

The length of the mist screen connector 300 is preferably set to 2 of the end of the mist screen forming device 50, specifically, the portion NM from the end edge 50a of the discharge port 50c to the end edge 50b of the main body cover from which mist is not discharged. That's more than double that. From another point of view, when the mist screen forming devices 50 are arranged close to each other, the edge 50b of the outlet 50c of one mist screen forming device 50A and the edge 50b of the outlet 50c of the other mist screen forming device 50B are is larger than the interval.

FIG. 11 is a plan view showing the mist screen connector installed in the mist screen forming device. FIG. 12 is an explanatory diagram showing the operation of this mist screen connector. First, two mist screen forming devices 50 are arranged side by side so that the mist screens to be ejected form a continuous surface. At this time, the main body 51 of one mist screen forming device 50A and the main body 51 of the other mist screen forming device 50B are arranged close to each other. Next, the mist screen connector 300 is placed above the discharge port 50c and across the gap between the main body edge 50b of the first mist screen forming device 50A and the main body edge 50b of the other mist screen forming device 50B. Place it so that it straddles it.

Next, the mist M is discharged from the discharge port 50c. The discharged mist M curves upward and flows along the outer surface 303 of the curved plate-like body 301 of the mist screen connector 300, and flows between the mist screen S on the right side in the figure and the left side in the figure at the upper part of the mist screen connector 300. The ends of the mist screen S are connected to each other.

As a result, the mist screens S are neatly and continuously formed even near the edges of the mist screen forming device 50, so that no defects occur in the image. Furthermore, even if the mist M hits the inner surface 304 of the curved plate-shaped body 301 and condenses, water droplets flow along the inner surface 304 and fall into 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 of the mist screen connector shown in FIG. 13. This mist screen connector 400 consists of a solid body with a semicircular or semicylindrical cross section. Preferably, the width of the solid body is approximately equal to the width of the mist screen.

The length of the mist screen connector 400 is preferably set to 2 of the end of the mist screen forming device 50, specifically, the portion NM from the end edge 50a of the discharge port 50c to the end edge 50b of the main body cover from which mist is not discharged. That's more than double that. From another point of view, when the mist screen forming devices 50 are arranged adjacently, the edge 50b of the outlet 50c of one mist screen forming device 50A and the edge 50b of the outlet 50c of the other mist screen forming device 50B are is larger than the interval.

FIG. 15 is a plan view showing the mist screen connector installed in the mist screen forming device. FIG. 16 is an explanatory diagram showing the operation of this mist screen connector. First, two mist screen forming devices 50 are arranged side by side so that the mist screens to be ejected form a continuous surface. At this time, the main body 51 of one mist screen forming device 50A and the main body 51 of the other mist screen forming device 50B are arranged close to each other. Next, the mist screen connector 400 is placed above the discharge port 50c and across the gap between the main body edge 50b of the first mist screen forming device 50A and the main body edge 50b of the other mist screen forming device 50B. Place it so that it straddles it.

Next, the mist M is discharged from the discharge port 50c. The discharged mist M curves upward and flows along the outer surface 403 of the solid body of the mist screen connector 400, and at the top of the mist screen connector 400, the mist screen S on the right side in the figure and the mist screen on the left side in the figure The ends with S are connected. As a result, the mist screens S are neatly and continuously formed even near the edges of the mist screen forming device 50, so that no defects occur in the image.

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

This mist screen forming device 60 has a structure in which a rectifier piece 1 is arranged near the edge 50a of the discharge port 50c, and the rectifier piece 1 is fixed near the center of the edge 50b of the main body 61 by a beam part 62. be. 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 has a ginkgo leaf-shaped flat plate curved at a predetermined curvature to form a curved surface 3 (outer surface 3) in the outer vertical direction (indicated by an arrow in the figure). The curved flat plate gradually becomes a converged shape and is integrated into the beam portion 62. The beam portion 62 extends horizontally, bends downward at the end edge 50b, and is fixed to the main body 61.

Moreover, since each rectifying piece 1 is a curved plate-like body, a curved surface 4 is formed in the inner vertical direction (indicated by an arrow in the figure). This inner curved surface 4 allows the water droplets to flow downward along the inner surface 4 when the mist adheres and becomes water droplets.

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

The rectifying piece 1 has a predetermined area, and its curvature and radius are determined so that the flow of the mist to be discharged flows along the upper surface of the curved surface 3. In addition, the area and shape of the inner surface 4 shall be determined in detail so that even if the mist hits the inner surface 4 and condenses, the water droplets caused by the condensation will fall downward along the inner surface 4. do. Furthermore, so that the mist discharged from the discharge port 50c can easily pass above the beam section 62, the beam section 62 is shaped to have a small cross-sectional area in a direction perpendicular to the flow direction of the mist. Preferably, it has a rod shape or a strip shape extending in the vertical direction.

That is, the rectifier piece 1 needs a predetermined area in order to perform the function of bending the mist flowing on the outer surface 3 along the curved surface 3 and causing it to flow upward, while the mist flowing on the inner surface 4 needs to have a predetermined area. Even if dew condensation occurs, the water droplets will fall before reaching the beam 62, and the beam 62 supports the rectifying piece 1 and allows the mist to pass through without disturbing the flow, and is designed to prevent condensation from occurring. It becomes shaft-like or plate-like.

The operation of the mist screen connector will be explained. First, two mist screen forming devices 60 are arranged side by side so that the mist screens to be ejected form a continuous surface. At this time, the main body 61 of one mist screen forming device 60A and the main body 61 of the other mist screen forming device 60B are placed close to each other and brought into contact with each other.

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 are opposed to each other, and a curved surface in the vertical direction on the outside is provided near the mist discharge port 50c. 3 will be located. Moreover, by adopting such a structure, the curved surfaces 3 of the pair of rectifier pieces 1 are positioned approximately symmetrically and with a predetermined interval.

Next, the mist M is discharged from the discharge port 50c. The discharged mist M flows upward along the outer surface 3 of the rectifying piece 1, and 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 at the upper part thereof. Furthermore, in the beam portion 62, the discharged mist M passes upward as it is and joins the connected mist screen S.

Thereby, the mist screen S is neatly and continuously formed even near the edge of the mist screen forming device 50, so that no defects occur in the image. Further, even if the mist M hits the inner surface 4 of the rectifying piece 1 and condenses, water droplets flow along the inner surface 4 of the rectifying piece 1 and fall into the discharge port 50c (the flow direction of the water droplets is indicated by an arrow in the figure). Therefore, water droplets do not drip onto the connecting portion of the mist screen forming device 60.

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

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

The rectifying piece 72 is a curved plate-like body with a sail-shaped cross section, and has vertically extending legs 73 attached to the main body 71 . The rectifying piece 72 has a predetermined area, and its curvature and radius are determined so that the flow of the mist to be discharged flows along the upper surface of the curved surface 303. Furthermore, the area and shape of the inner surface 304 shall be determined in detail so that even if the mist hits the inner surface 304 and condenses, the water droplets resulting from the condensation flow downward along the inner surface 304. .

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

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 are opposed to each other, and are curved outward in the vertical direction in the vicinity of the mist discharge port 50c. The rectifying piece 72 having the surface 303 will be located there. Moreover, by adopting such a structure, the curved surfaces 303 of the pair of rectifier pieces 72 are positioned approximately symmetrically and at a predetermined interval.

Next, the mist M is discharged from the discharge port 50c. The discharged mist M flows upward along the outer surface 303 of the rectifying piece 72, and 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 at the upper part thereof. As a result, the mist screen S is neatly and continuously formed even near the edge of the mist screen forming device 70, so that no defects occur in the image.

Further, even if the mist M hits the inner surface 304 of the rectifying piece 72 and condenses, water droplets flow along the inner surface 304 of the rectifying piece 1 and fall into the discharge port 50c (the flow direction of the water droplets is indicated by an arrow in the figure). Therefore, water droplets do not drip onto the connecting portion of the mist screen forming device 70.

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

(Modified example)
In the first to sixth embodiments described above, the curved surface may be a slope. FIG. 23 is an explanatory view showing a modification of the mist screen connector of the present invention, in which (a) is a perspective view, (b) is a side view, and (c) is a plan view. In this mist screen connector 90, the shape of the rectifier piece 1 of the mist screen connector 100 according to the first embodiment is triangular in plan view and obliquely linear in side view. The rectifying piece 91 is symmetrically supported by the beam portion 2 at a predetermined interval and forms slopes 93 and 94 in the outer vertical direction and the inner vertical direction.

The outer vertical slope 93 has the function of bending the mist along the slope 93 and causing it to flow upward. Further, when the mist adheres to the inner slope 94 and becomes water droplets, the water droplets flow downward along the slope 94. In this way, in the present invention, the curved surface and the slope have substantially the same function. Structures in which the curved surfaces according to Embodiments 2 to 6 are replaced with slopes are omitted from illustration.

(Example of mist screen configuration)
Next, an example of a mist screen forming apparatus using the above mist screen connector will be specifically explained. Note that the reference numerals described below indicate the reference numerals shown in the figures starting from FIG. 25A1. The mist screen connectors according to Embodiments 1 to 4 of the present invention are preferably used to connect the mist layers MS described below when the following mist screen forming devices are arranged side by side. Moreover, by using mist screen forming apparatuses having the configuration shown below as the mist screen forming apparatuses according to the fifth and sixth embodiments of the present invention, it becomes possible to connect stable mist screens neatly.

FIG. 25A1 is a conceptual diagram showing a mist screen forming device according to the present invention, in which (a) is a front view and (b) is a side view. FIG. 25A2 is a conceptual diagram showing the formation mode of the mist screen of the present invention. This mist screen forming device 1000 forms a mist screen S above the device, and includes a mist generating device 1 that generates mist using water supplied from a water tank 1001, and a device that rectifies the generated mist. a mist rectifier 2 that discharges the rectified mist onto the upper space in a predetermined screen shape; and an air blowing device 5 provided with air guides 4 on both sides of the mist guide 3. Note that an image is projected onto this mist screen S by a general-purpose projector P.

As shown in FIG. 25A2, the formed mist screen S is formed by ejecting mist in a screen or film form above the device and ejecting a film of air on both sides of the screen, forming an air layer in the thickness direction of the screen. A three-layer structure consisting of AS, a mist layer MS, and an air layer AS is formed. By sandwiching the mist layer MS between the air layers AS, it is possible to prevent the mist from dispersing 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 are shown below.

FIG. 25A3 is a configuration diagram showing a mist screen forming apparatus 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 in FIG. 25A3. FIG. 25A6 is a sectional view taken along line BB in FIG. 25A3. This mist screen forming device 100 includes a mist generating device 1 disposed in the lower center inside a main body casing 101, a mist rectifier 2 disposed above the mist generating device 1 for rectifying the generated mist, Mist guides 3 are arranged above the mist rectifier 2 and eject the rectified mist into the space above in a screen shape, and a mist guide 3 is arranged on both sides of the mist generator 1 and ejects air upward. The mist guide 4 includes an air blowing device 5 provided on both sides of the mist guide 3, and air guides 4 for blowing out mist in a screen shape. These are installed inside the main body case. The main body casing 101 is formed of a metal plate and has a generally rectangular parallelepiped shape that is elongated in one direction as a whole, and the longitudinal direction of the upper part is a slope 101a. The air guide 4 and the mist guide 3 constitute a guide section 6.

As shown in each of the above figures and the partially enlarged cross-sectional view of FIG. An ultrasonic transducer drive unit 12 that generates mist is disposed at the bottom of the tank 12, and an ultrasonic transducer drive unit 12 is disposed at the top of the tank 12 and directly above the ultrasonic transducer 13. The casing 11 has a spray nozzle 14 which has a hole 15 on the side surface for supplying spray liquid to the ultrasonic vibrator 13 and is open from the top and bottom, and centrifugal fans 40 provided on both sides of the side surface of the casing 11. A spray liquid is stored at the bottom of the 11 to a level where the 12 and 14 are submerged, and the spray liquid is turned into a mist by the ultrasonic vibrator 13 attached below the 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-sided view showing a state in which the air blowing device is removed from the housing. FIGS. 25A9-1 and 25A9-2 are an external view and a sectional view showing a state in which the mist guide and the air guide are removed. FIG. 25A10 is an external view and a sectional view showing the mist rectifier with the storage chamber removed. FIG. 25A11 is an external view and a sectional view showing a state in which the middle plate is removed.

FIGS. 25A11(C) and (d) show a state in which the top plate serving as a partition wall from the mist generator 1 is exposed. In this way, the top plate 16 is provided with a rectangular opening 17 in the upper part of the housing 11 for connection to the mist generator 1. This opening 17 is unevenly located on one side with respect to the central axis in the longitudinal direction. Furthermore, the centrifugal fans 40 are provided on both sides of the casing 11 in order to feed air into each section of the divided casing 11, respectively. Further, the ultrasonic transducer 13 is supplied with power at a predetermined frequency from the ultrasonic transducer 12 (not shown). Further, a water supply port is connected to the lower part 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-sectional shape in the transverse direction. The mist rectifier 2 forms a mist passage 23 inside, as shown in the passage schematic diagram of FIG. 25A12 and FIG. 25A9-2(d). A passage 23a is formed, and both ends thereof are bent and reversed to form a passage 23b adjacent to the passage 23a with a partition wall 24 in between.

In other words, a partition plate (partition wall 24) is provided at the center in the longitudinal direction of the longitudinal rectangular parallelepiped, and the partition plate is opened at both ends, forming a passage 23 in which the 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 inside the casing 21 of the mist rectifier 2 at the center in the central longitudinal direction, and both ends of the partition wall 24 form a gap with the side surfaces of both ends of the casing 21. Curved plates 25 are provided at both ends of the housing 20 in the longitudinal direction, which are curved in the horizontal direction to improve the flow of mist.

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. Further, the partition wall 24 is provided at the center of the intermediate plate 26 in the longitudinal direction. Furthermore, 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 introduction port 28 (opening 17) is exposed.

Next, a bottom plate 27 is connected to a portion of the mist generator 1 that is connected to the opening 17, and is provided with a rectangular mist introduction port 28 of a predetermined shape so as to cover the opening 17. The mist introduction port 28 is located on one side of the longitudinal partition wall 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 straight line. This hole 29 is small at the center in the longitudinal direction and becomes larger toward both ends. This is because the pressure at the center of the passage increases as the mist flowing from both ends collides at the center of the passage, so the hole 29 at the center of the passage is made smaller, and the holes 29 at both ends, where the pressure is lower than the center, are made smaller. This is to make the movement of mist to the storage chamber 22 provided at the top uniform by increasing the size.

It is preferable to provide a difference of two to three times in area ratio between the hole 29 located at the centermost position and the hole 29 located at the end side. In this way, even if a pressure difference occurs within the passage 23, the mist can be uniformly moved to the storage chamber 22. Further, in this embodiment, the holes 29 are symmetrically arranged in the longitudinal direction, and the distance between the holes 29 is the same as the distance 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 holes 29 are placed closer to the center, the mist will be too concentrated in the center. Further, the positions of the holes 29 in the lateral direction from the first hole 29a at the center to the fourth hole 29d are substantially the same. This is to place it almost directly below the discharge port, which will be described later.

As shown in FIGS. 25A9-2(c) and 25(d), for example, the storage chamber 22 has a substantially triangular cross section, and a strip-shaped discharge port 71 is provided at the top thereof. The dimension (thickness) of the discharge port 71 in the width direction is the thickness of the projection surface of the mist screen S. By making the storage chamber 22 have a substantially triangular or chevron-shaped cross section, it becomes difficult for mist to accumulate. Then, by narrowing the discharge port 71, a desired flow velocity is obtained. The thickness (band width) of the discharge port 71 needs to be thick enough to form the mist screen S, and on the other hand, it is not preferable that it is too thick. In particular, when used as a rear projection screen, the image becomes blurred, so the thickness of the discharge port 71 should be uniform at least in the projection range, and the flow velocity of the mist should also be maintained at the same thickness. Set the speed.

The air blowing device 5 is arranged on both sides of the mist generating device 1, as shown in FIG. 25A5. The air ejection device 5 is a device that ejects air that does not contain mist upward, and includes a casing 51 connected to the mist generating device 1 and a plurality of axial fans provided on the side surface of the casing 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 casing 101, and has a shape that follows the chevron-shaped slope of the storage chamber 22. This air blowing device 5 has a structure in which the mist generating device 1 separates the two sides, but 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 housings 51 of both air blowing devices 5. This makes the air ejected from the air ejection device 5 more uniform.

In addition, as long as the air blowing device 5 and the mist generating device 1 can be configured within the main body casing 101, the casings may be separate from each other, or even if a part of the sheet metal is shared. good. That is, as long as the air blowing devices 5 can be configured on both sides of the mist generating device 1, the specific structure of the casing is not limited to the example shown in the figure.

The mist guide 3 is connected to the discharge port 71 of the mist rectifier 2, as shown in FIG. 25A6. In addition, as shown in the enlarged view of FIG. 25A13 ((a) is a sectional view, and (b) is a partial plan view), the mist guide 3 has air guides 4 of the air blowing device 5 on both sides thereof. Configure. In the example shown in the figure, the mist guide 3 and the air guide 4 are configured as an integrated guide part 6, and the honeycomb structure is formed by regularly arranging a large number of regular hexagonal cylindrical bodies. . Each of the cylindrical bodies has the role of a guide, and in this configuration, the cylindrical body located directly above the discharge port 71 serves as the mist guide 3 (the part surrounded by the dashed line in FIG. 25A13(b)), A cylindrical body located directly 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 turbulent state are guided, adjusted, and 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. 25A2. In the configuration shown in the figure, the thickness of the air layer AS is greater than the thickness of the mist layer MS. Specifically, the air layer AS is formed to be twice or more (10 times or less) thicker than the mist layer MS. If the mist layer MS is thick, it will be difficult to visually recognize the image during image formation by rear projection, so it is preferable that the mist layer MS be thin.

The mist guide 3 is not limited to a honeycomb structure consisting of a cylindrical body with a hexagonal cross section. For example, as shown in FIG. 25A14(a), a honeycomb structure may be used in which a large number of cylindrical bodies 61 each having a square cross section are regularly arranged. Alternatively, as shown in FIG. 25A14(b), a honeycomb structure may be used in which a large number of cylindrical bodies 62 having a triangular cross-sectional shape are regularly arranged. Furthermore, as shown in FIG. 25A14(c), a honeycomb structure may be used in which band-shaped cylindrical bodies 64 having rectifying fins 63 provided therein are connected in the width direction. 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 a stable flow of mist and air. The guiding effect is enhanced by making the cross-sectional area of each cylindrical body small, but if it is too small, the mist flow will be obstructed by water droplets attached inside the cylindrical body, so it is recommended to make the cross-sectional area between 20 mm square and 40 mm square. preferable.

The mist screen forming device 100 also includes a mist control section that controls the mist generation of the mist generator 1 and the drive of the centrifugal fan 40, and an air control section that controls the drive of the axial fan 52 of the air blowing device 5. and has. The mist control unit controls the water level within the housing 11 within a certain range by driving the pump while detecting the water level inside 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. Furthermore, the centrifugal fan 40 whose air volume can be adjusted is driven to control the amount and speed of mist discharged from the discharge port 71. The air control unit controls the drive of the axial fan 52 to adjust the amount and speed of air ejected from the air ejection port 53.

Next, the operation of this mist screen forming apparatus 100 will be explained. In forming the screen, water is first supplied from the spray liquid tank 1001 into the housing 11 via a pump, and the ultrasonic vibrator drive unit 12 is driven to generate mist within the housing 11. This mist is ejected into the housing 11 from the tip of the spray nozzle 14. Air is powerfully introduced into the housing 11 by a centrifugal fan 40. The mist in the housing 11 moves into the mist rectifier 2 through 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 near the center toward both left and right ends, is smoothly reversed 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 to the storage chamber 22 from a plurality of holes 29 provided at the upper part of the passage 23. Since the plurality of holes 29 have a large area on both end sides and become smaller toward the center, mist is uniformly supplied to the storage chamber 22. When the mist accumulates in the storage chamber 22, the internal pressure causes the mist to be discharged from the discharge port 71 at a constant flow rate. The discharged mist is guided by the mist guide 3 to have a clean flow, and is ejected upward from the upper end in a screen shape.

On the other hand, in the air blowing 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 ejected from an air ejection port 53 opened at the top of the housing 51 and reaches the air guide 4, where the flow is adjusted by the air guide 4 and ejected upward from the upper end. This air is ejected and formed on both sides of the mist screen, creating a state in which 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 drive of the axial fan 52 by the air control section.

Furthermore, the air blowing device 5 sandwiches the mist layer MS between the air layers AS to prevent the mist in the mist layer MS from spreading. That is, a screen-like space is formed by the air layer AS, and the mist is confined inside the screen-like space. In this way, 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 onto the mist layer MS can be stabilized in the vertical direction (mist flow direction). In addition, since the air layer AS is thicker than the mist layer MS, even if it receives ambient air flow in the usage environment, such as wind generated when an air conditioner or a person moves, the surface layer of the air layer AS Since the mist layer MS can be absorbed and taken into the flow, the mist layer MS is not easily affected by the state of the air in the usage environment. In particular, the faster the air layer AS flows and the thicker it is, the more effective it becomes.

A projector P projects an image onto the mist screen S thus formed. This projected light passes through the air layer AS of the mist screen S, is reflected on 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 showing a mist screen forming device according to Embodiment 2 of the present invention. FIG. 25A16 is a conceptual diagram showing the mist screen forming device shown in FIG. 25A15. This mist screen forming device 100 forms a mist screen S in the downward direction, and includes a mist generating device 210 that generates mist using water supplied from a water tank, and a mist generating device 210 that generates mist using water supplied from a water tank. A mist rectifier 220 that rectifies the air, a mist guide 203 that ejects the rectified mist upward in a predetermined shape, and an air guide 204 that ejects air upward and ejects the air in a predetermined shape. It is configured by arranging air blowing devices 205 provided on both sides. An image is projected onto this mist screen S by a general-purpose projector. The air guide 204 and the mist guide 203 constitute a guide section 206.

The mist generator 210 has a rectangular parallelepiped housing 211 that temporarily stores the generated mist, and the spray liquid is surrounded by a rectangular parallelepiped housing 211 that is long in one direction, the bottom and side surfaces of the housing 211, and a partition plate 212. A tank part 201, an ultrasonic transducer drive unit 213 disposed on the bottom of the tank 201, and an ultrasonic transducer drive unit 213 disposed directly above the ultrasonic transducer drive unit 213, which is generally cylindrical as a whole and has a truncated cone shape when viewed from the side. The housing 211 has a spray nozzle 230 with vertical openings, and a centrifugal fan 240 provided on the side surface of the housing 211. Note that an ultrasonic vibrator is attached to the connection between the spray nozzle 230 and the ultrasonic vibrator drive unit 213 (not shown), and a side surface of the spray nozzle 230 is provided so that the spray liquid is supplied to the ultrasonic vibrator. It has a hole (not shown).

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

A mist rectifier 220 consisting of a passage chamber 221 and a storage chamber 222 is arranged below the mist generator 210. As shown in FIG. 25A16, the mist rectifier 220 has an approximately inverted triangular or inverted chevron cross-sectional shape in the transverse direction. The mist rectifier 220 forms a mist passage 223 inside, and an opening provided at the bottom of the bottom plate of the housing 211 communicates with the mist rectifier 220 as an introduction port 228. Specifically, the 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 with a partition wall 224 in between. A curved plate 225 is provided at the other end, which is curved in the horizontal direction to improve the flow of 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 it becomes smaller on the downstream side of the passage 223. 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 by making the hole 229 at the end of the passage smaller and the hole 229 on the upstream side larger, a storage tank provided at the bottom is created. The movement of mist into the chamber 222 is made uniform.

The storage chamber 222 has a substantially triangular cross section, and a strip-shaped discharge port 271 is provided at the lower top of the storage chamber 222 . The dimension (thickness) of the discharge port 271 in the width direction is the thickness of the projection surface of the mist screen S. The storage chamber 222 has a substantially inverted triangular or inverted mountain-shaped cross section, so that accumulated mist does not occur. Then, by narrowing the discharge port 271, a desired flow velocity can be obtained. The thickness of the discharge port 271 is set from the same viewpoint as in the first embodiment.

The air blowing device 205 is placed on both sides of the mist generating device 210 at a constant distance. The air blowing device 205 has a structure that blows air downward, and includes a box-shaped housing 251, a plurality of axial fans 252 provided on the side surface of the housing 251, and an opening at the bottom of the housing 251. It is composed of an air jet port 253.

The mist guide 203 is connected to the discharge port 271 of the mist rectifier 220. Furthermore, the air guide 204 is connected to the air jet port 253 of the air jet device 205 . Furthermore, the mist guide 203 and the air guide 204 form an air guide 204 spaced apart from each other by a certain distance on both sides of the mist guide 3, as shown in FIG. 25A17(a). In the example shown in the figure, the mist guide 203 and the air guide 204 are integrated, forming a honeycomb structure in which a large number of regular hexagonal cylindrical bodies are regularly arranged. Each of the cylindrical bodies has the role of a guide, and in this configuration, as shown in FIG. 25A17(b), the cylindrical body located directly below the discharge port 271 serves as the mist guide 203, and as shown in FIG. The cylindrical body located directly below 253 becomes the air guide 204. No cylindrical body is provided between the mist guide 203 and the air guide 204 (no guide area 260).

The thickness of the honeycomb structure (the length of the cylindrical body) is set so that mist and air that have entered in a turbulent state are guided, adjusted, and ejected directly below the mist guide 203. As a result, the mist screen S has a five-layer structure including the air layer AS, the intermediate layer TS, the mist layer MS, the intermediate layer TS, and the air layer AS, as shown in FIG. 25A17(c). The intermediate layer TS is a spatial region in which no air flow is actively generated between the mist layer MS and the air layer AS.

In the configuration shown in the figure, the thickness of the air layer AS is greater than the thickness of the mist layer MS. Specifically, the air layer AS is formed to be twice or more (10 times or less) thicker than the mist layer MS. If the mist layer MS is thick, it will be difficult to visually recognize the image during image formation by rear projection, so it is preferable that the mist layer MS be thin. Note that the mist guide 203 is not limited to a honeycomb structure consisting of a cylindrical body with a hexagonal cross section.

Next, the operation of this mist screen forming device 200 will be explained. Water is supplied from the spray liquid tank to the tank 201, and the ultrasonic vibrator is driven to generate mist within the tank. This mist is ejected from the tip of the spray nozzle 203 into the housing 211 . Air is powerfully introduced into the housing 211 by a 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, turns over neatly at the curved plate 225 at the other end, flows back, and hits the wall at one end. Then, the mist that has flowed through the passage 223 moves to the storage chamber 222 through a plurality of holes 229 provided at the lower part of the passage 223. The plurality of holes 229 have a larger area on the upstream side and become smaller toward the downstream side, so that mist is uniformly supplied to the storage chamber 222. When the mist accumulates in the storage chamber 222, the internal pressure causes the mist to be discharged from the discharge port 271 at a constant flow rate. The discharged mist is guided by a mist guide 203 to have a uniform flow, and is jetted downward in a screen shape.

On the other hand, in the air blowing 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 the bottom of the housing 251 and reaches the air guide 204 . The flow of the ejected air is adjusted by the air guide 204 and ejected downward from the lower end of the air guide 204. This air is ejected onto both sides of the mist screen, forming a state in which the mist screen is sandwiched through the intermediate layer TS. It is preferable that the flow velocity of the air is approximately equal to the flow velocity of the mist. The flow velocity adjustment is performed by controlling the drive of the axial fan 252 by the air control section.

In this way, even if the air layer AS receives wind in the usage environment that occurs when the air conditioner or people move, the surface layer of the air layer AS can absorb the wind and incorporate it into the flow. Not easily affected by environmental wind currents. Furthermore, since the intermediate layer TS is formed between the air layer AS and the mist layer MS, this portion acts as a buffer, making the mist layer MS less susceptible to disturbances in the air layer AS.

A projector P projects an image onto the mist screen S thus formed. This projected light passes through the air layer AS of the mist screen S, is reflected on 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 showing a mist screen forming apparatus according to Embodiment 3 of the present invention. This mist screen forming device has substantially the same configuration as the mist screen forming device 100 according to the first embodiment, but is characterized in that the air layer AS is formed into two layers on both sides of the mist layer MS. be.

This figure shows a plan view of a guide section for forming the air layer AS into two layers. This guide part 360 has substantially the same configuration as the guide part 6 shown in Embodiment 1, and is arranged at the air jet port 53 of the air jet device 5, and forms the inner air layer AS on the side of the mist layer MS. The cylindrical body is not provided in the intermediate region 352, which includes an inner region 350 that forms the outer air layer AS and an outer region 351 that forms the outer air layer AS, and that corresponds to the intermediate layer TS formed as a result of the ejection. . That is, an intermediate region 352 is provided in a portion corresponding to the air guide 4 of the guide portion 6 of Embodiment 1, and the intermediate region 352 is not provided with a cylindrical body (a state similar to that of a lid). Air is ejected from the air ejection part 53 of the air ejection device 5. The other configurations are the same as those in Embodiment 1, so illustration and description will be omitted. Note that the cylindrical bodies forming the inner region 350 and the outer region 351 may have different sizes or lengths. The part where the mist layer MS is formed is the mist layer formation region 353.

FIG. 25A19 is a schematic diagram showing the structure of the mist screen S formed by the guide portion shown in FIG. 25A18. A mist screen S is formed from the mist rectifier 2 using this guide part 360, and an inner air layer AS1 is formed on both sides by the inner region 350 of the guide part. In this state, the inner air layer AS1 is formed on both sides of the mist layer MS to form a state in which the mist layer MS is sandwiched therebetween, as in the first embodiment. The inner air layer AS1 has the same effects as the air layer AS of the first embodiment. That is, the mist layer MS is sandwiched between the inner air layers AS1 to prevent the mist in the mist layer MS from diffusing, and the thickness of the mist layer MS can be maintained to a desired height. As a result, the image projected onto the mist layer MS can be stabilized in the vertical direction (mist flow direction).

Furthermore, the outer region forms an outer air layer AS2. The outside air layer AS2 absorbs the flow of wind from an external air conditioner or electric 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 the effects of disturbances in the flow of the outer air layer AS2. The larger the thickness (width) of the intermediate layer TS, the more the influence of wind in the external environment can be suppressed.

(Embodiment 4)
FIG. 25A20 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 made adjacent to each other), and further, air is ejected to each of the inner air layer AS1 and the outer air layer AS2. The blowout device 5 and the air blowout port 53 may be provided separately. As shown in the figure, in this mist screen forming device, an air blowing device 5a and an air blowing device 5b having substantially the same configuration as the above embodiment are provided on both sides of the mist generator and the mist rectifier 2, respectively.

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

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

Further, the axial fans of the air jetting device 5a and the air jetting device 5b are driven and controlled so that the flow velocity of the outer air layer AS2 is faster than the flow velocity of the inner air layer AS1. By making the flow velocity of the outer air layer AS2 faster than the flow velocity of the inner air layer AS1, the diffusion of the air layer AS1 in the upper part of the mist screen is prevented, and accordingly the diffusion of the internal mist layer MS is prevented, and as a result, the mist The image projected onto the layer MS can be made more stable in the vertical direction (mist flow direction).

Furthermore, a humidifier (not shown) is provided for supplying humid air to the inside of the casing 51 in the air blowing device 5a, and by discharging humid air that does not become mist, the inner air layer AS1 may be formed. In this way, the mist layer MS is sandwiched between the high-humidity inner air layer AS1, and the humidity gradient between the mist layer MS and the inner air layer AS1 is smaller than when normal air is discharged to the inner air layer AS1. This prevents the mist layer MS from spreading, and as a result, the image projected onto the mist layer MS can be made more stable in the vertical direction (mist flow direction).

[Additional note 1]
A mist screen forming device that discharges mist supplied from a mist generating means in a screen shape,
a mist discharge means for discharging mist in one direction in a screen shape to form a mist layer in the space;
an air ejection means that forms an air layer sandwiching the mist layer by ejecting air that does not contain mist in substantially the same direction as the ejection direction of the mist and on both sides of the mist layer;
A mist screen forming device characterized by comprising:
[Additional note 2]
The mist discharge means has a strip-shaped mist discharge port that discharges the mist, and the air discharge means has strip-shaped air discharge ports that discharge air and are provided adjacent to both sides of the mist discharge port. The mist screen forming device according to Supplementary Note 1.
[Additional note 3]
The mist screen forming device according to Supplementary Note 1 or 2, further comprising a mist guide made of a honeycomb structure formed by regularly arranging a large number of cylindrical bodies and connected to the mist discharge port. .
[Additional note 4]
Further, according to any one of appendices 1 to 3, an air guide made of a honeycomb structure formed by regularly arranging a large number of cylindrical bodies is connected to the air outlet. mist screen forming device.
[Additional note 5]
Furthermore, it has a storage part that stores the mist, and a passage through which the mist supplied from the mist generation means passes, and the passage has a plurality of holes that communicate with the storage part that stores the mist,
The mist screen forming device according to any one of appendices 1 to 4, wherein the mist discharge means discharges the mist stored in the storage section in a screen shape.
[Additional note 6]
Furthermore, the mist screen forming device according to Supplementary Note 5, wherein among the plurality of holes, holes downstream of the flow of mist in the passage are smaller than holes upstream.
[Additional note 7]
Furthermore, the mist discharging means has a strip-shaped mist discharge port for discharging the mist,
The mist discharge port is provided in the storage section, and
6. The mist screen forming device according to claim 6, wherein the plurality of holes are arranged substantially along the longitudinal direction of the mist discharge port.

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

Claims (7)

A mist screen forming device that discharges mist supplied from a mist generating means in a screen shape,
a mist discharge means for discharging mist in one direction in a screen shape to form a mist layer in the space;
an air ejection means that forms an air layer sandwiching the mist layer by ejecting air that does not contain mist in substantially the same direction as the ejection direction of the mist and on both sides of the mist layer;
A mist screen forming device characterized by comprising: The mist discharge means has a strip-shaped mist discharge port that discharges the mist, and the air discharge means has strip-shaped air discharge ports that discharge air and are provided adjacent to both sides of the mist discharge port. The mist screen forming device according to claim 1, characterized in that: The mist screen forming device according to claim 1 or 2, further comprising a mist guide made of a honeycomb structure formed by regularly arranging a large number of cylindrical bodies and connected to the mist discharge port. . According to any one of claims 1 to 3, further comprising an air guide made of a honeycomb structure formed by regularly arranging a large number of cylindrical bodies and connected to the air outlet. mist screen forming device. Furthermore, it has a storage part that stores the mist, and a passage through which the mist supplied from the mist generation means passes, and the passage has a plurality of holes that communicate with the storage part that stores the mist,
The mist screen forming device according to any one of claims 1 to 4, wherein the mist discharge means discharges the mist stored in the storage section in a screen shape. 6. The mist screen forming device according to claim 5, wherein the plurality of holes include holes downstream of the flow of mist in the passageway that are smaller than holes upstream. Furthermore, the mist discharging means has a strip-shaped mist discharge port for discharging the mist,
The mist discharge port is provided in the storage section, and
The mist screen forming device according to claim 6, wherein the plurality of holes are arranged substantially along the longitudinal direction of the mist discharge port.

Images