KR101346988B1 - Smart window using electrochromic - Google Patents

Abstract

The present invention relates to a smart window using an electrochromic, comprising: a first glass plate provided with transparent glass; A second glass plate positioned to face the first glass plate and provided with transparent glass; A first electrochromic unit including a first electrochromic layer having a transmission region having a shape of a first pattern; A second electrochromic unit including a second electrochromic layer having a transmission region having a shape of a second pattern; A third electrochromic unit including a third electrochromic layer having no transmission region; A driving unit including a control circuit independently connected to the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit to apply a voltage; A power supply unit supplying power to the driving unit; A controller configured to control voltages to be applied to the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit individually; The first electrochromic unit, the second electrochromic unit, and the third electrochromic unit each have a pair of opposing transparent electrode layers, and the controller corresponds to light quantity data from the light sensing sensor. By controlling the color development or discoloration of the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit.
According to the present invention, the smart window using the electrochromic can adjust the light transmittance in a fifth step according to the change of the external environment, can flexibly cope with the change of the external environment, and can be variously adjusted the color or light transmission shape The smart window according to the color change effectively blocks the interior effect and the light of a specific wavelength, and adjusts the light transmission shape to control the light transmittance according to the change of the light transmission area step by step, and to the amount of light measured by the light sensor The light transmittance is adjusted accordingly, so that the illuminance of the room is automatically adjusted.

Description

Smart window using electrochromic

The present invention relates to a healthcare system and method.

In recent years, energy shortages have become a hot topic worldwide. As social concerns about energy shortages are concentrated, attempts to conserve energy are taking place everywhere.

Most office and residential buildings use, on average, 30-40 percent more energy for building maintenance energy sources for ventilation and lighting.

However, many office buildings and residential complexes now waste energy by blocking curtains and turning lights on during the day due to the dark environment in order to prevent dazzling on sunny days and overcast days on cloudy days. to be.

Therefore, the effective control of energy exchange between the exterior and the interior of the building through the windows of the building is a very important part to save energy, and research on this is needed.

In particular, research that can freely control the transmittance of sunlight is urgent, and for this purpose, a technique related to a smart window using an electrochromic material has recently been disclosed.

Electrochromic materials have the property of reversibly discoloring and discoloring based on a redox reaction generated by applying a voltage. For example, an electrochromic material does not have a color when no voltage is applied from the outside. When applied, it refers to a material that exhibits a reversible color change that takes on a color.

Related to this, Korean Patent Laid-Open Publication No. 10-2012-0109962 (hereinafter referred to as 'prior art') has been disclosed as a technique for changing the light transmittance of a window using an electrochromic material.

The prior art is an electrochromic device packaged in two conductive materials and includes an electrochromic composite material or a liquid electrochromic material, and provides an electrochromic device that changes transparency and color by supplying power from a solar panel. do.

SUMMARY OF THE INVENTION An object of the present invention is to provide a smart window using an electrochromic which can adjust light transmittance step by step.

Smart window using the electrochromic according to the present invention for achieving the above object is the first glass plate is provided with a transparent glass; A second glass plate positioned to face the first glass plate and provided with transparent glass; A first electrochromic unit including a first electrochromic layer having a transmission region having a shape of a first pattern; A second electrochromic unit including a second electrochromic layer having a transmission region having a shape of a second pattern; A third electrochromic unit including a third electrochromic layer having no transmission region; A driving unit including a control circuit independently connected to the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit to apply a voltage; A power supply unit supplying power to the driving unit; A controller configured to control voltages to be applied to the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit individually; The first electrochromic unit, the second electrochromic unit, and the third electrochromic unit each have a pair of opposing transparent electrode layers, and the controller corresponds to light quantity data from the light sensing sensor. By controlling the color development or discoloration of the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit.

The apparatus may further include a switch configured to determine whether the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit are manually controlled or automatically controlled.

In this case, the first electrochromic layer, the second electrochromic layer, and the third electrochromic layer each have a separate color.

On the other hand, the size of the transmission region of the first pattern and the second pattern is different, there is an intersection area where the transmission region of the first pattern and the second pattern cross each other.

In addition, the controller controls light transmittance of the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit according to the amount of light measured by the light sensing sensor in a fifth step.

The switch may further include a time setting unit for individually setting color or discoloration of the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit for a preset time when selecting manual control. It includes more.

As described above, the present invention has the following effects.

First, the smart window using the electrochromic of the present invention can adjust the light transmittance in a fifth step according to the change in the external environment, it is possible to flexibly cope with the change in the external environment.

Second, the smart window using the electrochromic of the present invention can be variously adjusted the color or light transmission shape, the smart window according to the color change has the effect of effectively blocking the interior effect and light of a specific wavelength, and the light transmission shape By adjusting the light transmittance according to the change in the light transmission area can be controlled step by step.

Third, the smart window using the electrochromic of the present invention automatically adjusts the illumination of the room because it adjusts the light transmittance according to the amount of light measured by the light sensor.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
1 is a block diagram showing a schematic configuration of a smart window using an electrochromic according to an embodiment of the present invention.
2 is a reference diagram illustrating first, second and third electrochromic layers according to an exemplary embodiment of the present invention.
3 is a reference diagram showing that the light transmittance is controlled in a fifth step according to an embodiment of the present invention.
4 is a reference diagram showing that the first, second and third electrochromic units according to an exemplary embodiment of the present invention are independently connected to a power supply unit.
5 is a block diagram of a smart window using an electrochromic according to an embodiment of the present invention.

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

Prior to this, the terms used in the specification and claims should not be construed in a dictionary sense, and the inventor may, on the principle that the concept of a term can be properly defined in order to explain its invention in the best way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Therefore, the embodiments shown in the present specification and the drawings are only exemplary embodiments of the present invention, and not all of the technical ideas of the present invention are presented. Therefore, various equivalents It should be understood that water and variations may exist.

The preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, in which technical sections already known will be omitted or compressed for simplicity of explanation.

1 is a block diagram showing a schematic configuration of a smart window using an electrochromic according to an embodiment of the present invention, Figure 2 is a first, second, third electrochromic layer according to an embodiment of the present invention 3 is a reference diagram showing the light transmittance is controlled in a fifth step according to an embodiment of the present invention, Figure 4 is a first, second, second according to an embodiment of the present invention It is a reference diagram showing that the electrochromic unit of 3 is independently connected to a power supply unit, and FIG. 5 is a block diagram of a smart window using an electrochromic according to an embodiment of the present invention.

Hereinafter, a smart window using an electrochromic device according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5.

Referring to FIG. 1, the smart window using the electrochromic includes a first glass plate 100, a light sensor 150, a second glass plate 200, a first electrochromic unit 300, and a second electrochromic. The unit 400 includes a third electrochromic unit 500, a driver 600, a power supply 700, and a controller 800.

The smart window using the electrochromic includes a first glass plate 100, a second glass plate 200, a first electrochromic unit 300, a second electrochromic unit 400, and a third electrochromic unit 500. ) Constitutes the smart window body 10.

Here, the first glass plate 100 and the second glass plate 200 are made of transparent glass having excellent light transmittance, and the first glass plate 100 and the second glass plate 200 are disposed to face each other.

In addition, the first glass plate 100 and the second glass plate 200 may be made of thermoplastic polymer such as polycarbonate (PC), polybutylene terephthalate (PBT), polyacryl (PA), polyurethane (PU), or the like. have.

The first glass plate 100 has an outer surface facing outward and is a layer to which solar radiation is first incident, and the second glass plate 200 has an inner surface facing the interior.

The thickness of the first glass plate 100 and the second glass plate 200 can be variously adjusted according to the purpose of using the smart window for a glass window of a vehicle, a glass window of a building, a house window, a living room, or a housing interior of a veranda.

The first glass plate 100 and the second glass plate 200 further include a thin film coating layer (not shown) made of a polymer material to compensate for heat resistance, strength, scratch resistance, and UV blocking. It may include.

The first electrochromic unit 300, the second electrochromic unit 400, and the third electrochromic unit 500 are positioned between the first glass plate 100 and the second glass plate 200. Are arranged sequentially.

The photo sensor 150 is installed on one side of the first glass plate 100 and serves to detect and measure the amount of light incident on the first glass plate 100.

The position where the light sensor 150 is installed can be variously adjusted and is not limited to the position installed in FIG.

Referring to FIG. 1, the light sensor 150 measures the amount of light incident on the first glass plate 100 and transmits the measured amount of light data to the controller 800.

In this case, the light detection sensor 150 is electrically connected to the control unit 800.

The first electrochromic unit 300 includes a first electrochromic layer 310 having a transmission region 50 of the first pattern shape 350.

As the first electrochromic unit 300 is applied with a voltage, other regions except for the transmission region 50 of the first pattern shape 350 provided in the first electrochromic layer 310 become dark or transparent, thereby reducing the light transmittance. It plays a role in controlling.

The first electrochromic unit 300 is disposed so that the pair of transparent electrode layers 900 (a) and (b) face each other, and the first electrochromic layer (a) is disposed between the pair of transparent electrode layers 900 (a) and (b). 310 is sandwiched.

The transparent electrode layers 900 (a) and (b) are electrically conductive layers that can be attached to the first glass plate 100 and the second glass plate 200, and between the pair of transparent electrode layers 900 (a) and (b). A predetermined voltage is applied to the first electrochromic layer 310 to cause color development and discoloration of the first electrochromic layer 310.

The transparent electrode layers 900 (a) and (b) refer to a conductive layer made of a transparent conductive metal oxide (TCO), which is a transparent and electrically conductive material, and preferably has excellent light transmittance. As described above, the front and rear surfaces of the first electrochromic layer 310 are formed to face each other.

More specifically, the transparent electrode layers 900 (a) and (b) may be provided with metal oxides that are gold (Au), silver (Ag), copper (Cu), platinum (Pt), aluminum (Al), or mixtures thereof. With tin-doped indium tin oxide (ITO), tin oxide (NESA), fluorine-doped tin oxide (FTO), zinc oxide (ZnO), aluminum-doped zinc oxide (ZnO: Al). Can be prepared.

The thickness of the transparent electrode layers 900 (a) and (b) can be variously adjusted according to the intended use of the smart window and does not affect light transmission interference, but is preferably provided within the range of 0.01 μm to 100 μm, It is not limited to this.

In addition, the transparent electrode layers 900 (a) and (b) are disposed between the first electrochromic unit 300 and the second electrochromic unit 400 and the second electrochromic unit 400 and the third electrochromic. The number of electrode layers may be reduced by using the transparent electrode layers 900 (a) and (b) as common electrodes between the mix units 500.

In this case, the transparent electrode layers 900 (a) and (b) are connected to the power supply unit 700 and the lead wire 30.

The first pattern shape 350 includes a rectangle, a rectangle, a square, a trapezoid, a triangle, a rhombus, a parallelogram, a circle, an ellipse, or a polygon thereof, or a polygon thereof.

In addition, the first pattern shape 350 may include a single pattern or a plurality of single patterns.

Referring to FIG. 2A as an embodiment of the present invention, the first pattern shape 350 is formed of a plurality of concentric circles.

On the other hand, when the voltage is applied to the first electrochromic unit 300, the transmission region 50 refers to an area where color development and discoloration of the first electrochromic layer 310 do not occur due to the electrochromic material.

That is, the transmission region 50 is a region in which light transmittance does not change with the application of voltage, and is always present in a transparent state so that sunlight can be transmitted as it is.

The transparent region 50 inserts a transparent thin film (partitioner) into the boundary portion of the first pattern shape 350 of the first electrochromic layer 310 so that the electrochromic material is introduced into the first pattern shape 350. It can be implemented by blocking the penetration, and also provided the area of the first pattern shape 350 of the first electrochromic layer 310 as a transparent insulator, so that the color of the first electrochromic layer 310 is not applied to a predetermined voltage. It is possible to implement the transmission region 50 does not occur bleaching.

When a voltage is applied between the pair of transparent electrode layers 900 (a) and (b), the first electrochromic layer 310 may be reversibly colored and discolored by electrochemical oxidation and reduction, thereby controlling light transmittance. It contains an electrochromic material.

The first electrochromic layer 310 may further include an electrolyte layer (not shown) capable of conducting ions or electrons.

At this time, the electrochromic material does not have a color when the electric field is not applied from the outside and is colored when the electric field is applied. Contains substances.

For example, the electrochromic materials include inorganic compounds such as tungsten oxide and molybdenum oxide, pyridine compounds, aminoquinone compounds, and the like. Examples of anode coloration materials include chromium oxide (Cr 2 O 3) and oxidation. Nickel (NiOx), iridium oxide (IrO2), manganese oxide (MnO2), iron hexacyano iron (II) oxide (III) (Fe4 [Fe (CN) 6] 3), nickel hydroxide (Ni (OH) 2), etc. Transition metal oxides, and examples of cathodic coloration materials include transition metals such as tungsten oxide (WO 3), molybdenum oxide (MoO 3), niobium oxide (Nb 2 O 3), titanium oxide (TiO 2), and strontium titanate (SrTiO 3). There is an oxide.

In addition, examples of the electrochromic substance include low molecular organic electrochromic compounds such as azobenzene, triphenylamine, and phenylene diamine, or π-conjugated systems such as polyacetylene, polyaniline, polyp-phenylene sulfide, and polyphenylnaphthalene. Conductive polymers can be used.

In this case, the electrochromic materials may be used alone or in combination.

The second electrochromic unit 400 includes a second electrochromic layer 410 having a transmission region 50 of the second pattern shape 450.

As the voltage is applied, the second electrochromic unit 400 makes the remaining light except for the transmissive region 50 of the second pattern shape 450 provided in the second electrochromic layer 410 to be dark or transparent, thereby reducing the light transmittance. It plays a role in controlling.

The pair of transparent electrode layers 900 (a) and (b) of the second electrochromic unit 400 are disposed to face each other, and the second electrochromic layer 410 is disposed between the pair of transparent electrode layers 900 (a) and (b). ) Is sandwiched.

Meanwhile, the electrochromic materials of the transparent electrode layers 900 (a) and (b), the second pattern shape 450, the transmission region 50, and the second electrochromic layer 410 may be formed of the first electrochromic unit ( Since it is the same as that described in (300), only the differences from the first electrochromic unit 300 will be described herein.

The second pattern shape 450 includes a rectangle, a rectangle, a square, a trapezoid, a triangle, a rhombus, a parallelogram, a circle, an ellipse, or a portion thereof or a polygon overlapping the second pattern shape 450. It may be formed to include or a plurality of the single pattern is disposed.

On the other hand, the size of the transmission region 50 of the first pattern shape 350 and the second pattern shape 450 is different, the transmission region 50 of the first pattern shape 350 and the second pattern shape 450 is There is an intersection area 60 intersecting with each other.

More specifically, referring to FIGS. 2A and 2B, the size of the transmission region 50 of the first pattern shape 350 and the second pattern shape 450 is different from each other by concentric circles and quadrangles. Referring to d), there exists an intersection area 60 where the transmission region 50 of the first pattern shape 350 and the second pattern shape 450 cross each other.

The third electrochromic unit 500 does not have a transmission region 50 and includes a third electrochromic layer 510.

The third electrochromic unit 500 adjusts the light transmittance by simultaneously darkening or making the entire area of the third electrochromic layer 510 according to the voltage application.

The third electrochromic unit 500 is disposed so that a pair of transparent electrode layers 900 (a) and (b) face each other, and a third electrochromic layer (B) between the pair of transparent electrode layers 900 (a) and (b). 510 is sandwiched.

Since the transparent electrode layers 900 (a) and (b) and the electrochromic material of the third electrochromic unit 500 are the same as those described in the first electrochromic unit 300, they will be omitted here.

In this case, the first electrochromic layer 310, the second electrochromic layer 410, and the third electrochromic layer 510 may have individual colors.

For example, the first electrochromic layer 310 has an electrochromic material of red color (R) when voltage is applied, and the second electrochromic layer 410 is green (G) when voltage is applied. It has a chromic material, and the third electrochromic layer 510 may have an electrochromic material having a blue color (B) when a voltage is applied.

That is, the first electrochromic layer 310 may have red (R), the second electrochromic layer 410 may have green (G), and the third electrochromic layer 510 may have blue (B). This is merely an example of the present invention and is not limited thereto.

Since the smart window using the electrochromic is provided with a plurality of electrochromic units, the interior effect of the colorful window can be obtained by changing the color of the electrochromic material for each electrochromic unit.

In addition, the color of the electrochromic material may be used to block light having a specific wavelength, thereby reducing damage from light having a harmful wavelength such as ultraviolet rays.

Herein, the smart window using the present invention electrochromic is a manual control for color development or discoloration of the first electrochromic unit 300, the second electrochromic unit 400, and the third electrochromic unit 400, and automatically. It may further include a switch 20 for determining whether to control.

The switch 20 may be installed at a predetermined portion of one side of the smart window body 10 or may be provided in a remote control type capable of selecting manual control or automatic control by remote control.

The switch 20 is configured to include a button for selecting manual control or automatic control. When the user selects manual control, the switch 20 includes the first electrochromic unit 300, the second electrochromic unit 400, and the third electrochromic. An operation button for selecting five levels of control of the mixer unit 400 is provided.

The switch 20 individually sets color or discoloration of the first electrochromic unit 300, the second electrochromic unit 400, and the third electrochromic unit 500 for a preset time when the manual control is selected. A time setting unit 850 may be further included.

The time setting unit 850 allows the user to colorize or discolor the smart window of the first electrochromic unit 300, the second electrochromic unit 400, and the third electrochromic unit 500 according to the situation for each time. It plays a role of presetting.

For example, when the smart window using the electrochromic of the present invention is used in a car, when the user parks the car for a long time in a place where sunlight is irradiated, the user has a high shading effect through the time setting unit 850 in advance. The electrochromic unit 300, the second electrochromic unit 400, and the third electrochromic unit 500 may be set to maximize color development.

That is, the user may set the light transmission amount of the smart window smart using the electrochromic of the present invention according to the time expected by the time setting unit 850.

The driver 600 includes a control circuit independently connected to the first electrochromic unit 300, the second electrochromic unit 400, and the third electrochromic unit 500 to apply a voltage. A voltage is applied to the first electrochromic unit 300, the second electrochromic unit 400, and the third electrochromic unit 500.

The power supply 700 serves to supply power to the driver 600 to form a voltage (potential difference).

The power supply unit 700 is configured to apply a predetermined voltage, and preferably a value within a range of 0.5V to 10V, but is not limited thereto.

If a reverse voltage is applied or no voltage is applied to each electrochromic unit, the color returns to the original transparent state.

To this end, the power supply unit 700 may further include a power cutoff unit (not shown) and a reverse voltage supply unit (not shown).

The control unit 800 is electrically connected to the switch 20, the light detecting sensor 150, the driving unit 600, the power supply unit 700, the time setting unit 850, and controls the overall operation of the smart window. The first electrochromic unit 300, the second electrochromic unit 400, and the third electrochromic unit 500 serve to control voltages to be individually applied.

That is, the controller 800 may control the first electrochromic unit 300, the second electrochromic unit 400, and the third electrochromic unit 500 to individually or simultaneously color or discolor. Do.

In addition, the controller 800 corresponds to the first electrochromic unit 300, the second electrochromic unit 400, and the third electrochromic unit 500 in response to the light amount data transmitted through the light sensor 150. Adjust color development or discoloration.

The controller 800 compares the light quantity data transmitted through the light sensor 150 with the light transmittance data according to the pre-stored reference light quantity, and if the transmitted light quantity data is higher than the reference light quantity, the first electrochromic unit 300, When the voltage is applied to the second electrochromic unit 400 and the third electrochromic unit 500 to generate color, the light blocking effect is enhanced. When the transmitted light quantity data is lower than the reference light quantity, the first electrochromic unit 300 is applied. In addition, voltage is applied to the second electrochromic unit 400 and the third electrochromic unit 500 to stop and dissipate to increase light transmission.

The control unit 800 may use the light transmission amount according to the color development or discoloration of the first electrochromic unit 300, the second electrochromic unit 400, and the third electrochromic unit 500. Is controlled in a fifth step.

3 (a) to 3 (e), the first step of light transmittance is the first electrochromic unit 300, the second electrochromic unit 400, and the third electrochromic unit 500. Since no voltage is applied to all of them, all incident solar light is transmitted to transmit sunlight through the entire region of the third electrochromic unit 500 as shown in FIG.

As shown in FIG. 3B, the light transmittance second step is applied with voltage only to the first electrochromic unit 300 and the second electrochromic unit 400 and the third electrochromic unit 500. The silver transmits sunlight only in the transmission region 50 of the first pattern shape 350 of the first electrochromic unit 300 while the voltage is stopped.

In the third light transmittance step, as shown in FIG. 3C, only the second electrochromic unit 400 is applied with a voltage, and the first electrochromic unit 300 and the third electrochromic unit 500 are applied. The silver transmits sunlight only in the transmission region 50 of the second pattern shape 450 of the second electrochromic unit 400 while the voltage is stopped.

As shown in FIG. 3 (d), the light transmittance is performed by applying voltage to the first electrochromic unit 300 and the second electrochromic unit 400, and the third electrochromic unit 500. The transmission region 50 of the first pattern shape 350 of the first electrochromic unit 300 and the second pattern shape 450 of the second electrochromic unit 400 while the silver voltage is stopped. Sunlight is transmitted only in the intersecting regions 60 that cross each other.

As shown in FIG. 3E, the light transmittance fifth step may be performed regardless of whether the voltage of the first electrochromic unit 300 or the second electrochromic unit 400 is applied. In the state where a voltage is applied to the unit 500, sunlight is blocked in the entire area of the third electrochromic layer 510 having no transmission region.

In other words, the light transmission amount decreases as the step increases from the first step to the fifth step.

Therefore, the smart window using the present invention electrochromic can control the light transmittance according to the change in the light transmission area by adjusting the light transmission shape.

In addition, the smart window using the present invention electrochromic can simultaneously transmit the sun and light blocking effect, it is possible to reduce the electrical energy due to the use of lighting.

Although the present invention has been fully described by way of example only with reference to the accompanying drawings, it is to be understood that the present invention is not limited thereto. It is to be understood that the scope of the invention is to be construed as being limited only by the following claims and their equivalents.

10: smart window body
20: Switch
30: Lead wire
50: Transmission Area (TA)
60: intersection area
100: first glass plate
150: light detection sensor
200: second glass plate
300: first electrochromic unit
310: first electrochromic layer
350: first pattern shape
400: second electrochromic unit
410: second electrochromic layer
450: second pattern shape
500: third electrochromic unit
510: third electrochromic layer
600: drive unit
700: Power supply
800:
850: time setting unit
900 (a) (b): transparent electrode layer

Claims (6)

A first glass plate formed of transparent glass;
A second glass plate positioned to face the first glass plate and provided with transparent glass;
A first electrochromic unit including a first electrochromic layer having a first pattern-shaped transmission region;
A second electrochromic unit including a second electrochromic layer having a second pattern-shaped transmission region;
A third electrochromic unit including a third electrochromic layer having no transmission region;
A driving unit including a control circuit independently connected to the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit to apply a voltage;
A power supply unit supplying power to the driving unit;
A controller configured to control voltages to be applied to the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit individually; Including;
The first electrochromic unit, the second electrochromic unit, and the third electrochromic unit each have a pair of opposing transparent electrode layers,
The controller may be configured to adjust color development or discoloration of the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit in response to light amount data from the light sensing sensor.
The apparatus may further include a switch configured to determine whether the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit are manually controlled or automatically controlled.
The first electrochromic layer, the second electrochromic layer, and the third electrochromic layer each have a separate color,
The transmissive areas of the first pattern shape and the second pattern shape are different in size, and the transmissive areas of the first pattern shape and the second pattern shape have an intersection area intersecting with each other,
The control unit,
Controlling the light transmittance of the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit according to the amount of light measured by the light detecting sensor in a fifth step,
Wherein the switch comprises:
The apparatus may further include a time setting unit for individually setting color or discoloration of the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit for a preset time when selecting the manual control.
The transparent electrode layer is provided with a conductive layer made of a conductive metal oxide (TCO: Transparent Conductive Oxide),
The transparent electrode layer disposed between the first electrochromic unit and the second electrochromic unit and between the second electrochromic unit and the third electrochromic unit is provided as a common electrode,
The first glass plate and the second glass plate each include a film-like coating layer of a thin film made of a polymer material to compensate for heat resistance, strength, scratch resistance, and UV blocking.
The transparent region may be formed by inserting a transparent thin film on the boundary between the first pattern shape or the second pattern shape on the first electrochromic layer or the second electrochromic layer, or the transparent insulator corresponding to the first pattern shape or the second pattern shape. Is implemented by inserting
The controller is provided to block harmful light of a specific wavelength by combining colors of the first to third electrochromic layers.
In the first step of the light transmittance, the first electrochromic unit, the second electrochromic unit, and the third electrochromic unit do not apply a voltage to transmit sunlight in all areas.
In the second step of the light transmission, a voltage is applied to only the first electrochromic unit and no voltage is applied to the second and third electrochromic units, so that sunlight is transmitted only in a transmission region of the first pattern shape.
In the third step of the light transmission, a voltage is applied only to the second electrochromic unit and no voltage is applied to the first and third electrochromic units, so that sunlight is transmitted only in a transmission region of the second pattern shape.
In the fourth step of the light transmittance, only a voltage is applied to the first and second electrochromic units and no voltage is applied to the third electrochromic unit, so that only the intersection region where the transmission region of the first pattern shape and the second pattern shape cross each other It is provided to transmit sunlight,
In the fifth step of the light transmittance, a voltage is applied to the third electrochromic unit to block the projected light in all areas.
Smart window using electrochromic.

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