JP2010072486A - Method of controlling transmitted visible light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dimming sash 10 in which the cost of a light shielding material can be reduced and the switching operation between a light-shielding state and a non-light-shielding state can be quickly and properly performed. <P>SOLUTION: Water is stored in a storage water layer formation chamber 18 between an outside glass 16 and an inner side glass 17 mounted on a frame 11. The water W containing micro bubbles generated with a micro bubble generator is supplied to the internal space 15a of a lower part frame 15, micro bubbles k are supplied into the storage water layer formation chamber 18 from a communicating hole 15b to turn the bubbles in the storage water layer formation chamber 18 into a white turbidity state. Visible light passing through the dimming sash 10 from the outside of the chamber to the inside of the chamber is shielded by the water in the white turbidity state, thus the air cooling efficiency of an air conditioner in the room side is improved. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a transmitted visible light control method capable of improving the cooling efficiency of an air conditioner by controlling visible light transmitted through a window glass of a building such as a building or a house.

As a solar radiation adjusting body that blocks solar radiation, the one disclosed in Patent Document 1 has been proposed. In the solar radiation adjusting body, a third transparent plate member positioned in the middle is disposed between the first transparent plate member positioned on the outdoor side and the second transparent plate member positioned on the indoor side, A liquid crystal material (a solar absorptivity adjusting layer) is interposed between the first transparent plate member and the third transparent plate member. And the light absorption is changed by changing the voltage applied to the said solar radiation absorptivity adjustment layer, and the amount of heat absorbed from solar radiation is adjusted. Further, a light-shielding diffusion layer formed of a material (white turbidity / transparent change material) whose light transmittance changes according to temperature is interposed between the second transparent plate member and the third transparent plate member. ing. Then, by using the heat absorbed by the solar radiation absorption rate adjusting layer, the transparent light-shielding diffusion layer is heated to change to a cloudy state, penetrates each transparent plate member from the outdoor side, and enters the indoor side. The amount of solar radiation is reduced, and the cooling efficiency of the air conditioner can be improved.
JP 2006-11167 A

  However, the conventional solar radiation adjusting body has a problem that the cost of the light shielding material cannot be reduced because it is necessary to use a special liquid crystal material (solar radiation absorption rate adjustment layer) and a light shielding diffusion layer that are expensive. In addition, since it is necessary to wait for the light-shielding diffusion layer to change from a transparent state to a cloudy state due to a temperature change accompanying the light transmittance adjustment of the solar absorptivity adjusting layer, the switching required for the transparent / cloudy state is necessary. There was a problem that time could not be shortened. Furthermore, since it is necessary to wait for the temperature change of the light-shielding diffusion layer, fine adjustment is difficult. In addition, for example, when the weather is cloudy and it is not necessary to block sunlight, for example, when the temperature is high, the light-shielding diffusion layer may be heated and become cloudy. There was also a problem that could not be done.

  The object of the present invention is to eliminate the above-mentioned problems in the prior art, reduce the cost of the light shielding material, and perform the switching operation between the light shielding state and the non-light shielding state quickly and appropriately. It is to provide a transmitted visible light control method.

  In order to solve the above problems, the invention described in claim 1 is characterized in that the surface of the translucent panel is covered with water to form an aqueous layer, and bubbles are mixed into the aqueous layer, The gist is to move along the surface of the panel.

  The invention according to claim 2 is the water storage layer according to claim 1, wherein the water layer is formed by water stored in a gap between two panels opposed to each other at a predetermined interval. The gist is that bubbles are supplied into the layer.

  The invention according to claim 3 is summarized in that, in claim 1, the water layer is a flowing water layer formed by flowing water mixed with bubbles along the surface of the panel.

(Function)
In the present invention, the surface of a transparent or translucent panel is covered with water to form an aqueous layer, and bubbles are mixed into the aqueous layer, and the bubbles are moved along the surface of the panel. The water layer becomes cloudy. For this reason, the visible light which permeate | transmits a panel is reduced.

  According to the present invention, since water and air bubbles are used as the light shielding material that shields visible light, it is possible to obtain an effect that the cost required for light shielding can be reduced.

(First embodiment)
Hereinafter, a first embodiment in which a transmitted visible light control method and a transmitted visible light control apparatus according to the present invention are embodied in a dimming sash will be described with reference to FIGS.

  The light control sash 10 shown in FIG. 1 is attached to a window portion of a building such as a building or a house. The light control sash 10 includes a frame body 11 having a vertically long rectangular frame shape. The frame 11 is made of, for example, vertical frames 12 and 13 made of a pair of left and right square pipes made of aluminum, and aluminum square pipes that are bridge-connected between upper and lower ends of both vertical frames 12 and 13. The upper horizontal frame 14 and the lower horizontal frame 15 are configured. As shown in FIG. 2, an outer glass 16 positioned on the outdoor side and an inner glass 17 positioned on the indoor side are fitted on the inner periphery of the frame 11 with a seal member (not shown) in a watertight state. The outer and inner glasses 16 and 17 constitute a panel having light transparency such as transparent or translucent. A predetermined interval (for example, 3 mm to 8 mm) is provided between the two glasses 16 and 17, and a water reservoir is formed that can store water W in a space formed by the frame 11 and the two glasses 16 and 17. A chamber 18 is formed. A water reservoir Ws is formed by the water reservoir formation chamber 18.

  As shown in FIG. 2, the internal space 14 a of the upper horizontal frame 14 and the reservoir layer forming chamber 18 are communicated with each other by a long hole-shaped communication hole 14 b formed in the bottom plate of the upper horizontal frame 14. An elongated communication hole 14c is formed in the side plate on the outdoor side of the upper horizontal frame 14 to communicate the internal space 14a with the outside (atmosphere). As shown in FIGS. 1 and 2, the water passage 15 a formed inside the lower horizontal frame 15 and the reservoir layer forming chamber 18 are formed with a plurality of communication holes 15 b formed in the upper plate of the lower horizontal frame 15. It is communicated by. Cover plates 20, 20 are attached to the opening portions at both ends of the lower horizontal frame 15 in a watertight state with a seal member (not shown). One of the cover plates 20 is provided with a pipe joint 20a for connecting a pipe.

Next, a microbubble supply device for supplying microbubbles into the reservoir layer forming chamber 18 will be described.
As shown in FIG. 1, a feed pipe 19 that feeds the water in the reservoir layer forming chamber 18 to the outside is supported through the upper end of one of the vertical frames 12.

  A microbubble generating nozzle 22 is accommodated in a water storage tank 21 disposed at a predetermined position in the building. The delivery pipe 19 and the water storage tank 21 are connected by a pipe 23. A purification device 24 having a filter (not shown) for purifying water is connected to the pipe 23. A pipe 23A is connected to the microbubble generating nozzle 22, and a variable flow rate type pump 25 is connected to the pipe 23A.

  The microbubble generating nozzle 22 is configured as shown in FIG. The nozzle body 26 is connected to the pipe 23 </ b> A through a joint 27, and a water injection hole 26 a is provided at the center of the nozzle body 26. The nozzle body 26 is formed with an air passage 30 having an annular injection hole 30a so as to surround the injection hole 26a. In the water storage tank 21, when water is injected from the injection hole 26a of the nozzle body 26 in the direction of the arrow, the air is sucked into the water storage tank 21 from the injection hole 30a of the air passage 30 by the ejector effect. Air becomes fine bubbles (diameter of 500 μm or less), that is, micro bubbles, which are mixed into the water in the water storage tank 21.

  As shown in FIG. 1, the water tank 21 and the pipe joint 20 a of the lid plate 20 are connected by a pipe 31. The pipe 31 is connected to a variable capacity pump 32 and an electromagnetic on-off valve 33. The solenoid 33a of the electromagnetic on-off valve 33 is operated for a predetermined time set by a timer 35 of the control device 34 so that the electromagnetic on-off valve 33 is opened. The electromagnetic opening / closing valve 33 is not only opened / closed according to the timing operation of the timer 35, but is also switched by, for example, the following conditions by switching the setting mode of the control device 34. That is, the control device 34 can set an external environment compatible mode, and in the setting state of the external environment compatible mode, an environmental sensor (not shown) such as the amount of solar radiation, the outside air temperature, and the room temperature is used. The electromagnetic on-off valve 33 can be arbitrarily controlled to open / close by a detection signal. For example, the electromagnetic on-off valve 33 is opened when the amount of solar radiation exceeds a certain amount, when the outside air temperature exceeds a predetermined value, or when the room temperature exceeds a predetermined value. Furthermore, the control device 34 has a function of controlling the operation of the electromagnetic on-off valve 33 for a long period of time based on a control program set in advance for each season or month, for example. For example, in the severe winter season, the electromagnetic on-off valve 33 is prevented from being opened regardless of the time of the timer 35 and the amount of solar radiation, or in the extremely hot season, the electromagnetic on-off valve 33 is opened from before sunrise. Various settings are possible.

  The water storage tank 21 is supplied with water from a water source 36 such as a water supply via a pipe 37. An electromagnetic opening / closing valve 38 is connected to the pipe 37, and a solenoid 38 a of the electromagnetic opening / closing valve 38 is controlled by a control signal from the control device 34.

Next, the operation of the light control sash 10 and the microbubble generator configured as described above will be described.
1 and 2, the water W is stored in the reservoir formation chamber 18, the reservoir Ws is formed in the reservoir formation chamber 18, and the microbubble generator is stopped. The water reservoir Ws is in a transparent state. In this state, the pump 25 and the pump 32 are driven by a control signal from the control device 34, and the solenoid 33a of the electromagnetic on-off valve 33 is excited to open the electromagnetic on-off valve 33. Then, the water W in the water storage tank 21 is supplied to the microbubble generating nozzle 22 by the pump 25, and the microbubble k is generated in the water W stored in the water storage tank 21 by the nozzle 22. The water W mixed with the microbubbles k is pumped up from the water storage tank 21 by the pump 32 and supplied through the pipe 31 into the passage 15 a of the lower horizontal frame 15. The water W supplied into the passage 15a enters the reservoir formation chamber 18 through the communication holes 15b together with the microbubbles k. For this reason, as shown in FIG. 4, the microbubbles k are supplied to the water inside the reservoir formation chamber 18 over almost the entire region, and the almost entire region of the outer glass 16 becomes clouded by the microbubbles k. Therefore, the visible light is appropriately shielded by the water W in the cloudy state, and the amount of visible light entering the indoor side through the water storage layers Ws stored in both the glasses 16 and 17 and the water storage layer forming chamber 18 is reduced. For example, the cooling efficiency by the air conditioner on the indoor side in the summer is improved.

  When adjusting the amount of white turbidity for light control, that is, the density of the microbubbles k mixed in the water W, the rotational speed of the pump 25 is changed by the control signal from the control device 34, The flow rate of water W supplied to the microbubble generating nozzle 22 may be adjusted.

  The microbubbles k supplied into the reservoir formation chamber 18 move upward in the reservoir Ws stored in the reservoir formation chamber 18, and enter the internal space 14a from the communication hole 14b of the upper horizontal frame 14. It enters and is discharged into the atmosphere from the communication hole 14c. Further, the water W in the reservoir formation chamber 18 is supplied to the purification device 24 through the pipe 23, purified by the filter of the purification device 24, and supplied to the water storage tank 21.

  As described above, in this embodiment, it is possible to appropriately switch between white turbidity and transparency. Therefore, according to the visible light control device of the dimming sash 10 of this embodiment, the following effects can be obtained. Can do.

  (1) In the above embodiment, microbubbles k are generated in the water W in the water storage tank 21 by the microbubble generating nozzle 22, and the water W mixed with the microbubbles k is passed through the pipe 31 and the passage 15 a of the lower horizontal frame 15. Supply in. Then, the microbubbles k are supplied from the passage 15a to the water storage layer Ws of the water storage layer forming chamber 18 of the light control sash 10 through the communication hole 15b. For this reason, the water storage layer Ws in the water storage layer forming chamber 18 becomes clouded by the microbubble k, the visible light of the sun that is about to enter the indoor side from the outdoor side is reflected, and the energy that enters the indoors is suppressed, The cooling efficiency by the indoor air conditioner can be improved.

  (2) In the above embodiment, the water reservoir Ws in the water reservoir formation chamber 18 becomes clouded by the microbubbles k, so that a curtain and a blind for shielding the interior and the exterior can be omitted. Therefore, the indoor space can be widely used.

  (3) In the above embodiment, since the microbubble k is supplied to the water storage layer Ws in the water storage layer forming chamber 18, only inexpensive water W and air are used as a shielding medium for shielding visible light. Therefore, the cost of the shielding medium can be reduced. In addition, since there is no chemical substance (liquid crystal material) as described in the background art, the light control sash 10 can be easily disassembled.

  (4) In the above embodiment, if the flow rate of the variable capacity type pump 32 is adjusted, the density of the microbubbles k in the reservoir formation chamber 18 can be adjusted immediately accordingly. Therefore, the amount of transmitted light can be adjusted finely and quickly.

(5) In the said embodiment, since the water W exists in the water reservoir formation chamber 18, the fire resistance of a building can be improved.
(6) In the above embodiment, the amount of light leaking from the window of the building at night can be adjusted by controlling the mixing rate of the microbubbles k into the water W, thereby improving the design and privacy protection of the building. be able to. Naturally, the design of the building can be improved by controlling the mixing rate of the microbubbles k into the water W even during the daytime.

(Second Embodiment)
Next, a second embodiment in which the present invention is embodied in the light control sash 10 will be described with reference to FIGS. The second embodiment generates a bubble k ′ (bubble) larger than the microbubble diameter (500 μm) of the microbubble in place of the microbubble generator of the dimming sash 10 of the first embodiment. A bubble generating device is used. In the second embodiment and each of the other embodiments, a configuration different from that of the first embodiment will be described, and detailed description of the same parts will be omitted.

  In the second embodiment, as shown in FIG. 5, a bubble generating nozzle 39 is attached to the cover plate 20 located on the right side of the lower horizontal frame 15. A pipe 23 on the downstream side of the pump 25 is connected to the inlet of the bubble generating nozzle 39 via an electromagnetic on-off valve 33. As shown in FIG. 6, the bubble generating nozzle 39 includes a nozzle body 40 having a tapered nozzle hole 40a and a lid 41 having a discharge hole 41a. A bubble generation chamber 42 is formed between the nozzle main body 40 and the lid body 41, and air is introduced into the bubble generation chamber 42 from the air introduction hole 40b. A check valve 43 is connected to the air introduction hole 40b to prevent water from flowing out from the bubble generating chamber 42 to the outside. When water is supplied from the pipe 23 to the nozzle hole 40a of the nozzle body 40 at a predetermined pressure, air is introduced into the bubble generation chamber 42 from the air introduction hole 40b by the ejector effect, and the air is mixed with water. , Bubble k ′ is generated. The water W mixed with the bubble k ′ is supplied to the passage 15a of the lower horizontal frame 15 from the discharge hole 41a of the lid body 41 and the passage 20b formed in the lid plate 20.

  As shown in FIG. 5, the water replenishment described in the first embodiment is performed at the end of the upper horizontal frame 14 in order to replenish water when the water in the reservoir formation chamber 18 decreases. A pipe 37 of the apparatus is connected.

  In the second embodiment, a bubble k ′ having a relatively large particle size is supplied into the reservoir formation chamber 18. Therefore, as shown in FIG. 5, the water reservoir Ws in the water reservoir formation chamber 18 becomes clouded by a large number of bubbles k ', and visible light that attempts to enter the indoor side through the dimming sash 10 from the outdoor side. Is shielded. For this reason, the same effect as the first embodiment can be obtained.

(Third embodiment)
Next, a third embodiment in which the present invention is embodied in the light control sash 10 will be described with reference to FIGS.

  As shown in FIGS. 7 and 8, in the third embodiment, one of the inner glass 17 and the outer glass 16 is omitted (in this embodiment, the inner glass 17 is omitted), and the upper horizontal frame 14 is omitted. A cylindrical pipe 46 having a water passage 46a in which microbubbles are mixed and an injection hole 46b that opens toward the outer glass 16 is horizontally attached to the outdoor surface of each of the two through a pair of left and right brackets 45. Yes. As shown in FIG. 9, the injection holes 46b are formed at a plurality of locations at a predetermined pitch in the horizontal direction. As shown in FIG. 7, the pipe 31 is connected to one end of the pipe 46. The other end of the pipe 46 is sealed.

On the other hand, a collection rod 47 having a collection groove 47a is horizontally mounted on the outdoor surface of the lower horizontal frame 15. The pipe 23 is connected to one end of the recovery rod 47.
A photocatalytic layer 48 such as titanium oxide is formed on the surface of the glass 16 with a predetermined layer thickness (for example, 200 to 500 nm). The surface of the glass 16 is hydrophilized by the photocatalyst layer 48 so that the water W supplied to the surface of the photocatalyst layer 48 is diffused and flows down as a thin flowing water layer Wr (see FIG. 11). .

Next, the operation of the light control sash 10 of the third embodiment configured as described above will be described.
In FIG. 7, the pumps 25 and 32 are activated to generate microbubbles k in the water W in the water storage tank 21 from the microbubble generating nozzle 22, and the microbubbles k are mixed into the water W. The water W mixed with the microbubbles k is supplied by the pump 32 to the passage 46 a of the pipe 46 through the pipe 31. And it ejects toward the outer side glass 16 through the some injection hole 46b from the channel | path 46a. This water W is supplied to the hydrophilized photocatalyst layer 48 on the surface of the glass 16 as shown in FIG. 10, and is diffused along the surface of the photocatalyst layer 48 so that the layer thickness of the water W becomes substantially uniform. It becomes a thin flowing water layer Wr and flows downward. The upper surface of the glass 16 is cooled by the flowing water layer Wr. The water in the flowing water layer Wr that has flowed down to the lower end of the outer glass 16 is collected in the collecting groove 47a of the collecting rod 47, and is supplied again to the passage 46a of the pipe 46, and used for cooling the surface of the glass 16.

  Since microbubbles k are mixed in the flowing water layer Wr, the surface of the glass 16 becomes clouded by the microbubbles k as shown in FIG. 10, and is visible through the glass 16 from the outdoor side and entering the indoor side. The amount of light can be reduced, the cooling efficiency by the air conditioner can be improved, and a dedicated curtain or blind can be eliminated.

  On the other hand, as shown in FIG. 11, when it is desired to form a flowing water layer Wr in which the microbubbles k are not mixed on the surface of the glass 16, the pump 32 is driven while the pump 25 is stopped, Water W is directly supplied from 31 to the pipe 46. By this operation, as shown in FIG. 11, only water W is supplied to the surface of the photocatalyst layer 48 on the surface of the glass 16, and flows down as a flowing water layer Wr having a substantially uniform thickness. The water W in the flowing water layer Wr is recovered in the recovery groove 47a of the recovery rod 47, supplied again to the passage 46a of the pipe 46, and used for cooling the surface of the glass 16.

Therefore, the third embodiment has the following effects in addition to the same effects as the first embodiment.
(1) In the above embodiment, the outer glass 16 can be cooled by the heat of vaporization when the water W of the flowing water layer Wr flowing on the surface of the outer glass 16 evaporates.

(2) In the above embodiment, the outer glass 16 can be maintained in a clean state by the flowing water W and the photocatalyst layer 48.
(3) In the above embodiment, since the surface of the outer glass 16 has been subjected to a hydrophilic treatment, it is possible to form a flowing water layer Wr that is thin and uniform and has no gaps. When the hydrophilic treatment is not performed, the flowing water layer Wr may flow in a streak shape, and a large amount of water W is required to avoid this.
(Example of change)
In addition, you may change each said embodiment as follows.

  As shown in FIG. 12, in the dimming sash 10 of the first embodiment, the bottom plate of the lower horizontal frame 15 is omitted, and the microbubble generating nozzles 22 and the upper plate of the lower horizontal frame 15 are arranged at a plurality of locations. A similar microbubble generating nozzle 22 may be mounted.

In this modified example, since the water storage tank 21 and the pump 32 can be omitted, the structure of the entire microbubble generator can be simplified and the equipment cost can be reduced.
As shown in FIG. 13, a microbubble generating nozzle 22 may be attached to the bottom plate of the lower horizontal frame 15. In this modified example, since the number of microbubble generating nozzles 22 is one, the equipment cost can be further reduced.

  As shown in FIG. 14, in the dimming sash 10 of the third embodiment, the microbubble generating nozzle 22 is connected to the end of the pipe 46, and the pipe 23 is connected to the nozzle 22. Good. Also in this case, since the water storage tank 21 and the pump 32 can be omitted, the structure of the entire microbubble generator can be simplified and the equipment cost can be reduced.

  As shown in FIG. 15, a panel 51 having a shape in which the upper part is substantially horizontal and the lower part is substantially upright is used, and the microbubbles are formed on the upper edge of the panel 51 using the apparatus of the third embodiment. Water mixed with water may be supplied to the panel 51. If it does in this way, the flow speed of water will be slow in the upper part of panel 51, and it will become fast in the lower part. For this reason, the density of microbubbles is high in the upper part of the panel 51 and can effectively shield light, and the density is lowered in the lower part, so that a horizontal field of view can be obtained.

  In each of the above embodiments, the flat dimming sash 10 is arranged in the vertical direction, but the dimming sash 10 is arranged obliquely in the vertical direction, or the dimming sash 10 is curved in an arc shape. Or you may.

  The light control sash 10 shown in FIGS. 1 and 2 is disposed horizontally to form, for example, a roof top light, and the water in the reservoir Ws mixed with bubbles in the reservoir formation chamber 18 is circulated by the water circulation means. You may do it. In addition, a microbubble supply nozzle for supplying water mixed with microbubbles is inserted into the end or middle of the flowing water layer forming chamber of the top light, so that the water containing microbubbles is mixed into the flowing water layer forming chamber. May be configured to move as a flowing water layer in a radial or bi-directional manner, for example. In this case, the bubble flow can be changed, and the design can be improved.

  The glass 16 shown in FIGS. 7 and 8 is horizontally arranged to form a ceiling glass (water basin), and a microbubble generating nozzle is arranged at an end or an intermediate part of the upper surface of the ceiling glass, It is also possible to supply water mixed with microbubbles on the upper surface of the glass to form a flowing water layer mixed with bubbles and circulate the collected water to the upper surface of the ceiling glass by a water circulation means.

A transparent or translucent synthetic resin plate may be used in place of the outer and inner glasses 16 and 17.
-The visible light control device of the present invention may be applied to uses other than building window frames, such as roofs, gate fences, roofs of eastern buildings provided in parks, outdoor sun guards, screens, monuments, etc. .

  In the above embodiment, the ejector-type microbubble generating nozzle is used to generate microbubbles, but other types of microbubble generators such as a cavitation type or a pressure dissolution type may be used.

Hereinafter, technical ideas other than the claims ascertained from the respective embodiments and modifications will be listed below.
(1) The visible light control method according to any one of claims 1 to 3, wherein the bubble is a microbubble.

(2) Visible light control characterized by comprising water layer forming means for forming a water layer by covering the surface of a translucent panel with water, and bubble mixing means for mixing bubbles in the water layer. apparatus.
(3) In the above technical idea (2), a reservoir formation chamber for storing water in the gap between two panels facing each other at a predetermined interval to form a reservoir is provided. A visible light control device comprising a layer mixing chamber provided with bubble mixing means for mixing bubbles in the water storage layer.

  (4) A flowing water layer forming means for forming a flowing water layer by supplying water to the surface of the panel is provided for the translucent panel, and the flowing water layer forming means has a bubble mixture for mixing bubbles in the flowing water layer. A visible light control device characterized by comprising means.

(5) The visible light control device according to any one of the technical ideas (2) to (4), wherein the bubble mixing means is a microbubble generator.
(6) The visible light control device according to the technical idea (4), wherein a hydrophilic layer is formed on a surface of the panel.

(7) The visible light control device according to the technical idea (6), wherein the hydrophilic layer is a photocatalyst layer.
(8) In the above technical idea (4) or (5), the bubble mixing means has a function of forming a transparent flowing water layer in which bubbles are not mixed on the surface of the panel, and cloudy flowing water mixed with bubbles. A visible light control device characterized in that the function of forming a layer can be switched alternately.

  (9) The visible light control device according to any one of the technical ideas (2) to (8), wherein the bubble mixing unit includes a density adjusting unit that adjusts a density of bubbles.

1 is a front sectional view showing a first embodiment in which the present invention is embodied in a dimming sash. FIG. FIG. 1 is a sectional view taken along line 1-1 of FIG. Sectional drawing of a microbubble generation nozzle. The front view which shows the state which supplied the micro bubble to the inside of the water reservoir formation chamber of a light control sash. The front sectional view of the light control sash which shows 2nd Embodiment of this invention. The longitudinal cross-sectional view of a bubble generation nozzle. The front view of the light control sash which shows the 3rd Embodiment of this invention. The longitudinal cross-sectional view of the light control sash of FIG. The perspective view of a pipe. The front view which shows the state which flowed down the water in which the micro bubble was mixed along the surface of the glass of a light control sash. The front view which shows the state which flowed down only water along the surface of glass. The fragmentary front sectional view of the light control sash which shows the example of a change of this invention. The fragmentary front sectional view of the light control sash which shows the example of a change of this invention. The front view of the light control sash which shows the example of a change of this invention. Sectional drawing abbreviate | omitted partially of the panel which shows the example of a change of this invention.

Explanation of symbols

k: microbubble, W: water, Wr ... flowing water layer, Ws ... reservoir layer, 18 ... reservoir layer forming chamber, 48 ... photocatalyst layer, 51 ... panel.

Claims (3)

A method of controlling visible light transmission, comprising forming a water layer by coating a surface of a light-transmitting panel with water, mixing bubbles in the water layer, and moving the bubbles along the surface of the panel . 2. The water reservoir according to claim 1, wherein the water reservoir is a reservoir formed by water stored in a gap between two panels facing each other at a predetermined interval, and bubbles are supplied into the reservoir. A transmitted visible light control method characterized by the above. 2. The transmitted visible light control method according to claim 1, wherein the water layer is a flowing water layer formed by flowing water in which bubbles are mixed along the surface of the panel.

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