Light control module and layering light transmission device

Abstract

To provide a light control module capable of achieving improvement of a structure when mounting the light control module on an existing light transmission window and making it serve as a layering light transmission device, and to provide the layering light transmission device.SOLUTION: A light control module mounted on an existing light transmission window includes: an opposing light transmission window opposing the existing light transmission window; a light control sheet mounted on the opposing light transmission window; a drive voltage application part that applies a drive voltage to the light control sheet; and a spacer part that supports the drive voltage application part and positions the light control module on the existing light transmission window.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a light control module and a multi-layered light transmitting device. [Background technology]

[0002] Patent Document 1 describes a double-glazed glass in which an exterior laminated glass sheet placed on the exterior side and an interior laminated glass sheet placed on the interior side are separated by a spacer, each side of the spacer facing the exterior laminated glass sheet and the interior laminated glass sheet is joined to the exterior laminated glass sheet and the interior laminated glass sheet by a primary sealant, and a secondary sealant is applied to the outside of the primary sealant. The exterior laminated glass sheet is configured as a laminated glass sheet consisting of a first chemically strengthened glass sheet, a first interlayer film, and a second chemically strengthened glass sheet, arranged from the exterior side to the interior side. The interior laminated glass sheet is configured as a laminated glass sheet consisting of a glass sheet with a heat-reflecting film formed on its surface, a second interlayer film, a light-controlling sheet, a third interlayer film surrounding the light-controlling sheet, a fourth interlayer film, and a tempered glass sheet, arranged from the exterior side to the interior side.

[0003] Patent Document 2 describes a double-glazed window in which a new, approximately rectangular, spacer-equipped glass plate is bonded to the inside surface of an existing glass window via a spacer. The spacer-equipped glass plate includes a glass plate having an inner surface facing the inside surface of the existing glass window and smaller than the existing glass window, and a spacer disposed on the inside surface of the glass plate at a certain distance from the edge of the glass plate. The double-glazed window also includes a sealant that bonds the inside surface of the existing glass window, the outer peripheral surface of the spacer of the spacer-equipped glass plate, and the inside surface of the spacer-equipped glass plate. The sealant is a polysulfide-based sealant or a silicone-based sealant. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6337898 [Patent Document 2] Patent No. 5783438 Summary of the Invention [Problem to be solved by the invention]

[0005] However, according to the inventor's intensive research, the conventional technologies including Patent Documents 1 and 2 have technical issues in terms of improving the structure when attaching a dimming module to an existing glass (window) to create a double-glazed glass (window).

[0006] The present invention was completed based on the above-mentioned concerns, and aims to provide a dimming module and a multi-layered light-transmitting device that can improve the structure when attaching a dimming module to an existing light-transmitting window to create a multi-layered light-transmitting device. [Means for solving the problem]

[0007] The dimming module of this embodiment is a dimming module that is attached to an existing translucent window, and is characterized by having an opposing translucent window that faces the existing translucent window, a dimming sheet that is attached to the opposing translucent window, a drive voltage application unit that applies a drive voltage to the dimming sheet, and a spacer unit that supports the drive voltage application unit and positions the dimming module on the existing translucent window. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a light control module and a multi-layered light-transmitting device that can improve the structure when attaching a light control module to an existing light-transmitting window to form a multi-layered light-transmitting device. [Brief explanation of the drawings]

[0009] [Figure 1] 1A to 1C are first diagrams illustrating the assembly process of the light control module of this embodiment. [Figure 2] 2A and 2B are first and second cross-sectional views taken along line II-II in FIG. 1. [Figure 3]2A to 2C are second diagrams illustrating the assembly process of the light control module of this embodiment. [Figure 4] 1A and 1B are first and second diagrams showing the configuration of a double-glazing glass device of the present embodiment. [Figure 5] FIG. 4C is a cross-sectional view taken along line VV in FIG. 4B. [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 4B. [Figure 7] 7A to 7C are first, second, and third cross-sectional views taken along line VII-VII in FIG. 4B. [Figure 8] 4B is a cross-sectional view taken along line VV in FIG. 4B, which is different from FIG. 5. [Figure 9] 10A and 10B are diagrams showing a first modified example of the mounting structure of the dimming module and the existing glass window. [Figure 10] FIG. 10 is a diagram showing a second modified example of the mounting structure of the dimming module and the existing glass window. [Figure 11] 3A and 3B are diagrams showing first and second examples of installation modes of a first spacer portion and a second spacer portion. [Figure 12] 10A and 10B are diagrams showing a modified example in which gas inlet and outlet holes are formed in the spacer portion. [Figure 13] 10A and 10B are diagrams showing a modified example in which a tip-over prevention portion is formed on the spacer portion. DETAILED DESCRIPTION OF THE INVENTION

[0010] <Definitions of terms, etc.> In this specification, the term "light-transmitting window" may be read as a "light-transmitting member" or a "light-transmitting plate," and is used as a concept including a "glass window," a "glass member," or a "glass plate." That is, in this specification, a "glass window (glass member, glass plate)" is described as an example of a "light-transmitting window (light-transmitting member, light-transmitting plate)," but a "light-transmitting window (light-transmitting member, light-transmitting plate)" may be composed of materials other than glass, for example, various plastics or other materials. For the same reason, the term "existing light-transmitting window" may be read as an "existing light-transmitting member" or an "existing light-transmitting plate," and is used as a concept including an "existing glass window," an "existing glass member," or an "existing glass plate." Furthermore, the term "opposing light-transmitting window" may be read as a "opposing light-transmitting member" or a "opposing light-transmitting plate," and is used as a concept including a "opposing glass window," an "opposing glass member," or an "opposing glass plate."

[0011] In this specification, the terms "mounting, supporting, fixing, etc. of various components including a "translucent window (glass window)," "existing translucent window (existing glass window)," and "opposing translucent window (opposing glass window)" are used to refer to not only direct aspects but also indirect aspects involving the interposition of these support structures.

[0012] In this specification, a "multi-layered light-transmitting device" is defined as a device in which a plurality of light-transmitting windows (light-transmitting members, light-transmitting plates), for example, an existing light-transmitting window (existing light-transmitting member, existing light-transmitting plate) and an opposing light-transmitting window (opposing light-transmitting member, opposing light-transmitting plate) are connected (overlapped) to form a unit. In this specification, as an example of a "multi-layered light-transmitting device," a "multi-layered glass device" in which an existing glass window (existing glass member, existing glass plate) and an opposing glass window (opposing glass member, opposing glass plate) are connected (overlapped) to form a unit is given.

[0013] In this specification, an "existing light-transmitting window (existing glass window)" refers to a so-called single-piece light-transmitting window (glass window) that has already been installed in, for example, a house, a building, a store, etc. Also, in this specification, an "opposing light-transmitting window (opposing glass window)" refers to a component included in a "light control module" that is retrofitted to an "existing light-transmitting window (existing glass window)." In other words, when a "light control module" is retrofitted to an "existing light-transmitting window (existing glass window)," a "multi-glazing device" is completed in which the "existing light-transmitting window (existing glass window)" and the "opposing light-transmitting window (opposing glass window)" are connected (overlapped) to form a unit.

[0014] Furthermore, the term "existing light-transmitting window (existing glass window)" may refer to, for example, a specific light-transmitting window (glass window) that is the target for installing a "light control module" (described later) among light-transmitting windows (glass windows) that are two-pane double-glazed windows already installed in a house, building, store, etc. In this case, the "existing light-transmitting window (existing glass window)" is a two-pane double-glazed window that has already been installed, and by installing a light control module including the "opposing light-transmitting window (opposing glass window)" of this embodiment on the interior side of the window, a three-pane (three-layer) double-glazed window is completed in total.

[0015] Furthermore, in this specification, a "dimming module" is an integrated unit that includes a dimming sheet to be attached to an "opposing light-transmitting window (opposing glass window)" and a drive voltage application unit (e.g., including an electrode unit and a wiring unit) that applies a drive voltage to the dimming sheet. The "dimming module" is an assembly (subassembly) before attachment to an "existing light-transmitting window (existing glass window)" that includes a dimming sheet and a drive voltage application unit in an optimized configuration (mode) for providing a dimming function to the "opposing light-transmitting window (opposing glass window)." To this end, the "dimming module" has a spacer unit that supports (e.g., protects, hides, stores, and guides or houses the drive voltage application unit (e.g., including an electrode unit and a wiring unit)) and positions the dimming module on the existing light-transmitting window (existing glass window). The detailed structure and effects of the spacer unit will be described in the specific embodiments described below.

[0016] <Conventional technical issues> In recent years, there has been an increase in the use of partitions with dimming devices for the purpose of privacy protection, etc. For example, glass equipped with a dimming function (dimming glass) is usually transparent glass, but is used to meet the need to block views from inside and outside at certain times.

[0017] Conventionally, one approach to achieving light-control glass involves attaching a light-control sheet (light-control film) to the exterior windows (existing glass windows) of existing buildings and installing a drive voltage application unit (including the installation of electrodes, routing of wiring, and the formation of structures such as electrode hiding and wiring closures to improve appearance). However, depending on the environment, there is a risk of condensation and the resulting electrical leakage or malfunction, as well as concerns about thermal cracking. Furthermore, except for new construction or major renovations, existing buildings are often in operation, making it difficult to work on-site in large spaces or for long periods of time. Furthermore, since the light-control sheet is simply attached to the exterior windows, there are concerns about scratches and dirt due to contact with windows that are subject to heavy foot traffic or frequent contact with people or objects. While it is possible to apply a scratch-resistant layer, such as an HC layer, to the outer surface of the light-control sheet, its effectiveness is limited due to its lower scratch resistance compared to glass.

[0018] It is possible to achieve a better appearance by preparing new glass with the light-control sheet attached in advance, or by attaching the light-control sheet to the glass that has been removed on the spot and then fitting it back in, with the peripheral sealing part, electrode part, and wiring part embedded within the window frame structure.However, this requires removing and replacing the glass, and depending on the situation, disassembling the window frame, which can be difficult to achieve depending on the site conditions, such as the window frame structure and the exterior windows of the building.

[0019] For example, as in the aforementioned Patent Document 1, double-glazed windows with internal light-control sheets have been proposed, but this requires the replacement of each individual glass (sash). While this is suitable for new construction or large-scale renovations, it cannot be applied to existing glass windows (the existing glass windows cannot be effectively utilized). In other words, the replacement of the existing glass windows becomes necessary, which increases costs and labor. Furthermore, in many cases, the sash itself must also be replaced, making the process even more difficult.

[0020] Furthermore, the above-mentioned Patent Document 2 describes the retroactive formation of a double-glazed window from an existing glass window (adding double-glazed glass to an existing single-glazed sash), but does not describe the addition of a dimming function in this process, much less how and where to position the components that provide the dimming function.

[0021] For example, in a double-pane sash, it is possible to install a light-controlling film on the inside of the double-pane glass. This type of structure has the advantage of protecting the light-controlling film from external forces, but when installing electrode concealers to improve the appearance, even if the electrodes are hidden on both the indoor and outdoor sides of the glass, there is the issue that if the electrodes are located on the top, they will be visible from below. Another issue is that if the outdoor side is exposed to outdoor light, the electrodes will deteriorate due to the outdoor light. Furthermore, when installing wiring, if there are multiple electrodes, it is necessary to consider measures such as drilling multiple holes in the window frame (sash) to allow the wiring to pass through gaps in glass fixing materials such as gaskets (beads), and in some cases, running the wiring through gaps in the glass fixing materials, each of which must be considered individually.

[0022] <Technical Concept of the Invention> The inventors recognized the above-mentioned problems as important technical challenges and came up with a structure and construction method that incorporates a light-controlling sheet and a drive voltage application unit (electrodes and wiring) in an optimized arrangement at the stage of the light-controlling module before installation on an existing light-transmitting window (existing glass window), thereby contributing to protecting the light-controlling module (unit), improving its appearance, and improving layout efficiency. More specifically, the light-controlling module includes an opposing light-controlling window (opposing glass window) facing the existing light-controlling window (existing glass window), a light-controlling sheet attached to the opposing light-controlling window (opposing glass window), and a drive voltage application unit (electrodes and wiring) that applies a drive voltage to the light-controlling sheet. The inventors then came up with the idea of ​​providing a spacer unit in the light-controlling module, and providing the spacer with a functional component for supporting the drive voltage application unit (electrodes and wiring) and a functional component for positioning the light-controlling module on the existing light-transmitting window (existing glass window). The term "supporting the drive voltage application section (electrode section and wiring section)" is used as a concept including, for example, protection, hiding, storing, guiding, and housing in a manner that allows for removal.

[0023] This makes it possible to easily install a light control module on the exterior windows (existing glass windows) of existing buildings to create a double-glazed glass system without removing the glass or replacing the sash. Furthermore, by installing a light control sheet inside the double-glazed glass system (the inside of the opposing glass window between the existing glass window and the opposing glass window) and creating a sealed structure, the problem of condensation is eliminated and contact with people and objects is prevented. By using it in combination with a heat ray reflecting or absorbing structure, the problem of thermal cracking can also be avoided.

[0024] Furthermore, for example, by optimally arranging the above-mentioned spacer portion, adhesive layer, moisture-absorbing material, etc. in a dimming module that can be retrofitted to an existing translucent window (existing glass window), which is an existing single-pane glass sash, to form a double-pane glass structure, it is possible to easily equip the exterior windows (existing glass windows) of existing buildings with dimming functions and achieve double-pane glass.

[0025] In addition, the dimming module has functional components for supporting the drive voltage application section (electrode section and wiring section) in the spacer section, such as an electrode section protection section, an electrode section hiding section, a wiring section storage structure section, and a wiring section extraction structure section, thereby realizing a dimming module (unit) structure that can maintain airtightness.

[0026] Furthermore, when retrofitting the dimming module to an existing translucent window (existing glass window), there is no need to bond or replace the glass at the work site (the existing glass window can be used effectively), and it is installed as a dimming glass module (unit), so it can be installed in a space-saving and easy manner with only the need for secondary sealing.

[0027] The light control module of this embodiment is a light control module that is attached to an existing light-transmitting window (e.g., an existing glass window), and may include an opposing light-transmitting window (e.g., an opposing glass window) facing the existing light-transmitting window, a light control sheet (light control film) attached to the opposing light-transmitting window, a drive voltage application unit that applies a drive voltage to the light-controlling sheet, and a spacer unit that supports the drive voltage application unit and positions the light control module on the existing light-transmitting window. This allows for an improved structure when attaching the light control module to an existing light-transmitting window to create a multi-layered light-transmitting device (e.g., a multi-layered glass device). More specifically, at the stage of the light control module before attachment to the existing light-transmitting window, it is possible to achieve a guide (accommodation) that protects, hides, stores, and allows for removal of the drive voltage application unit.

[0028] The drive voltage application unit may have an electrode unit attached to the light controlling sheet and a wiring unit connected to the electrode unit. This allows the electrode unit and wiring unit serving as the drive voltage application unit to be suitably supported (guided, housed) by the spacer unit.

[0029] The light-controlling sheet may be attached to the surface of the opposing light-transmitting window facing the existing light-transmitting window. The spacer portion may have a first spacer portion covering the peripheral edge of the surface of the opposing light-transmitting window opposite the existing light-transmitting window and extending toward the existing light-transmitting window, and a second spacer portion positioned between the existing light-transmitting window and the light-controlling sheet on the surface of the opposing light-transmitting window facing the existing light-transmitting window. The electrode portion and the wiring portion may be supported between the first spacer portion and the second spacer portion. This allows the electrode portion and the wiring portion to be suitably supported (including, for example, being protected, hidden, and guided or housed in a manner that allows them to be stored or removed) between the first spacer portion and the second spacer portion.

[0030] The second spacer may support the electrode and wiring along its outer casing and may hold a moisture-absorbing material in its internal chamber, thereby enabling the electrode and wiring to be supported with efficient layout by the outer casing of the second spacer, and the moisture-absorbing material held in the internal chamber of the second spacer to effectively absorb moisture from the electrode and wiring.

[0031] At least one of the first spacer portion and the second spacer portion may have a joint portion (e.g., an adhesive portion) for at least one of the existing light-transmitting window and its supporting structure (e.g., a glass sash), thereby enabling the spacer portions (first and second spacer portions) and therefore the dimming module to be suitably joined (fixed, supported) to the existing light-transmitting window.

[0032] At least one of the first spacer portion and the second spacer portion may have a gas inlet / outlet hole for allowing gas to enter and exit the space between the existing light-transmitting window and the opposing light-transmitting window. The gas inlet / outlet hole may be used to at least one of degass and reduce the pressure of the air in the space between the existing light-transmitting window and the opposing light-transmitting window, and replace the air with an inert gas to create a sealed and airtight structure. This allows for the realization of a suitable multi-layered light-transmitting device (e.g., a multi-layered glass device). For example, it is possible to prevent condensation between the existing light-transmitting window and the opposing light-transmitting window, as well as associated electrical leakage or malfunction, and even thermal cracking. It is also possible to prevent damage to the existing light-transmitting window and the opposing light-transmitting window, as well as to the light-control sheet (e.g., it is possible to prevent scratches, dirt, etc. caused by inadvertent contact by people or objects to create a sealed and airtight structure).

[0033] The first spacer portion may be disposed to correspond to a partial or entire region of the periphery of the opposing light-transmitting window, and the second spacer portion may be disposed to correspond to a partial or entire region of the periphery of the opposing light-transmitting window, thereby enabling the first and second spacer portions to be configured in a manner that flexibly corresponds to the combination of the shapes of the opposing light-transmitting window and the existing light-transmitting window, etc.

[0034] The light control module of this embodiment may have a sealed / airtight structure (for example, a rubber packing or a sealing seal) for making the opposing space between the existing light-transmitting window and the opposing light-transmitting window sealed / airtight. This can prevent condensation between the existing light-transmitting window and the opposing light-transmitting window, as well as associated leakage or malfunction, and thermal cracking. It can also prevent damage to the existing light-transmitting window, the opposing light-transmitting window, and the light-control sheet (for example, it can prevent scratches, dirt, etc. caused by inadvertent contact with people or objects to achieve the sealed / airtight structure).

[0035] The spacer may have a tip-prevention part that prevents the dimming module from tipping over relative to the existing light-transmitting window. This ensures the precision with which the dimming module and the existing light-transmitting window are positioned and fixed. Furthermore, even if a strong impact is applied to the multi-layered light-transmitting device (e.g., a multi-layered glass device) or an earthquake occurs, the risk of the dimming module separating from the existing light-transmitting window can be reduced.

[0036] <Specific embodiment> Hereinafter, embodiments will be described with reference to the drawings. However, the drawings are schematic or conceptual, and the dimensions and proportions of each drawing are not necessarily the same as those of the actual drawing. Furthermore, even when the same parts are shown in different drawings, the dimensional relationships and proportions may be different. In particular, the following embodiments are illustrative of devices and methods for embodying the technical concept of the present invention, and the shape, structure, arrangement, etc. of the components do not specify the technical concept of the present invention. In the following description, elements having the same function and configuration are designated by the same reference numerals, and redundant description will be omitted.

[0037] 1A, 1B, and 1C are first views showing the light control module 1 of this embodiment in the order of assembly steps. FIGS. 2A and 2B are first and second cross-sectional views taken along line II-II in FIG. 1.

[0038] As shown in FIG. 1A, the light control module 1 has a rectangular (approximately rectangular) light control sheet (light control film) 10. A peripheral sealing portion 11 is formed on each side (periphery) of the rectangle (approximately rectangular) of the light control sheet 10. The laminated structure of the light control sheet 10 has a degree of freedom, allowing for various design modifications. One example is a light control layer (liquid crystal layer) located at the center of the laminated structure (the center perpendicular to the plane of the page). The light control layer contains a liquid crystal composition. The light control layer is composed of, for example, polymer network liquid crystal (PNLC: Polymer Network Liquid Crystal), polymer dispersed liquid crystal (PDLC: Polymer Dispersed Liquid Crystal), or nematic curvilinear aligned phase encapsulated liquid crystal (NCAP: Nematic Curvilinear Aligned Phase). For example, a polymer network liquid crystal has a three-dimensional mesh-like polymer network, and liquid crystal molecules are held in the voids of the polymer network. The liquid crystal molecules contained in the light-controlling layer have, for example, a positive dielectric anisotropy, and the dielectric constant in the long axis direction of the liquid crystal molecules is larger than the dielectric constant in the short axis direction of the liquid crystal molecules. The liquid crystal molecules are, for example, Schiff base-based, azo-based, azoxy-based, biphenyl-based, terphenyl-based, benzoate-based, tolan-based, pyrimidine-based, cyclohexanecarboxylic acid ester-based, phenylcyclohexane-based, or dioxane-based liquid crystal molecules.

[0039] A transparent conductive layer (transparent electrode layer) is provided on the outside of one surface of the light-controlling layer (the front side in the direction perpendicular to the paper), and a transparent substrate layer is provided on the outside of the transparent conductive layer (the front side in the direction perpendicular to the paper). Similarly, a transparent conductive layer (transparent electrode layer) is provided on the outside of the other surface of the light-controlling layer (the back side in the direction perpendicular to the paper), and a transparent substrate layer is provided on the outside of the transparent conductive layer (the back side in the direction perpendicular to the paper). When viewed in the direction perpendicular to the paper, the light-controlling sheet 10 has a symmetrical layered structure including a light-controlling layer, transparent conductive layers located on both sides of the light-controlling layer, and transparent substrate layers located on both sides of those. The light-controlling sheet 10 has an adhesive layer (attachment layer) on the surface facing the existing glass window (existing translucent window) 50 described below.

[0040] The transparent conductive layer is a transparent layer having electrical conductivity. Examples of materials constituting the transparent conductive layer include indium tin oxide (ITO), fluorine-doped tin oxide (FTO), tin oxide, zinc oxide, carbon nanotubes (CNT), polymers including poly(3,4-ethylenedioxythiophene) (PEDOT), and multilayer films including Ag alloy thin films.

[0041] The transparent substrate layer is composed of, for example, a PET (Polyethylene Terephthalate) layer. On the outside of the transparent substrate layer, a functional film layer including, for example, at least one of an HC (Hard-Coating) layer, a smoke layer, and a UV (ultraviolet) cut layer may be provided.

[0042] Electrode units 20X and 20Y are attached to each of the transparent conductive layers of the light-adjusting sheet 10 as drive voltage application units that apply a drive voltage to the light-adjusting sheet 10, and wiring units 30X and 30Y composed of FPCs (Flexible Printed Circuits) or the like are connected to each of the electrode units 20X and 20Y. The electrode units 20X and 20Y and the wiring units 30X and 30Y are protected by a sealing material. In the illustrated example, the electrode units 20X and 20Y lined up in the left-right direction are attached near the upper edge of the rectangular (approximately rectangular) light-adjusting sheet 10, and the wiring units 30X and 30Y connected to the two electrode units 20X and 20Y extend slightly upward before being bent to the right and routed to the right. The electrode section 20X (wiring section 30X) is attached to the front side of the transparent conductive layer of the light-adjusting sheet 10 in the direction perpendicular to the paper surface, and the electrode section 20Y (wiring section 30Y) is attached to the rear side of the transparent conductive layer of the light-adjusting sheet 10 in the direction perpendicular to the paper surface.

[0043] In the light controlling sheet 10, when a driving current is applied to the transparent conductive layer via the electrode portions 20X and 20Y and the wiring portions 30X and 30Y, a driving voltage is applied between the transparent conductive layers, that is, to the light controlling layer.

[0044] When no driving voltage is applied between the transparent conductive layers (the light-controlling layer), the orientation of the long axes of the liquid crystal molecules in the light-controlling layer is irregular. As a result, light incident on the light-controlling layer is scattered, and the light-controlling sheet 10 appears cloudy. In other words, the light-controlling sheet 10 is opaque.

[0045] On the other hand, when a driving voltage is applied between the transparent conductive layers (the light-controlling layer), the liquid crystal molecules in the light-controlling layer are oriented, and the long axis of the liquid crystal molecules is oriented along the electric field direction between the transparent conductive layers. As a result, light can easily pass through the light-controlling layer, and the light-controlling sheet 10 becomes transparent.

[0046] The light-controlling sheet 10 may include a pair of light-controlling layers sandwiching the light-controlling layer between the light-controlling layer and the transparent conductive layer. The light-controlling layer controls the orientation of the liquid crystal molecules contained in the light-controlling layer, and aligns the liquid crystal molecules along the normal direction of the orientation layer when no driving voltage is applied. In a configuration including an orientation layer, the light-controlling sheet 10 becomes opaque when a driving voltage is applied between the transparent conductive layers (light-controlling layers), and becomes transparent when no driving voltage is applied between the transparent conductive layers (light-controlling layers). Examples of materials that can be used to form the orientation layer include polyamide, polyimide, polycarbonate, polystyrene, polysiloxane, polyesters such as polyethylene terephthalate and polyethylene naphthalate, and polyacrylates such as polymethyl methacrylate. Examples of orientation treatments for forming the orientation layer include rubbing, polarized light irradiation, and microfabrication.

[0047] The light-controlling layer may also contain a pigment having a predetermined color that does not interfere with the movement of liquid crystal molecules in response to the magnitude of the voltage applied to the light-controlling layer. This configuration achieves a light-controlling sheet 10 having a predetermined color.

[0048] The light controlling sheet 10 is used for various purposes, for example, by cutting into a desired shape a large sheet made of a multilayer body including each layer that constitutes the light controlling sheet 10. For example, the light controlling sheet 10 is attached to a target glass, which may normally be transparent glass, and is used to provide a function of blocking view from inside and outside only at specific times.

[0049] The light control glass / light control method of the present embodiment described above is an example, and various design modifications are possible. For example, light control glass / light control methods such as electrochromic (EC) light control glass, a suspended particle device (SPD) method, or a gasochromic method may be applied.

[0050] As shown in FIG. 1B , the light control module 1 has an opposing glass window (opposing light-transmitting window) 40 that is a rectangle (approximately rectangular) slightly larger than the rectangle (approximately rectangular) of the light control sheet 10. When the light control module 1 is installed, the opposing glass window 40 faces an existing glass window (existing light-transmitting window) 50 (described later). In FIG. 1B , the opposing glass window 40 is located on the front side in the direction perpendicular to the paper surface, and the light control sheet 10 is located on the back side in the direction perpendicular to the paper surface, with the front surface of the light control sheet 10 in the direction perpendicular to the paper surface being attached (mounted) to the back surface of the opposing glass window 40 in the direction perpendicular to the paper surface. The light control sheet 10 is also attached (mounted) to the surface of the opposing glass window 40 that faces the existing glass window 50 (described later).

[0051] As shown in FIGS. 1C, 2A, and 2B, the dimming module 1 includes a spacer 60 that supports the electrode units 20X and 20Y and the wiring units 30X and 30Y as drive voltage application units and positions the dimming module 10 on an existing glass window (existing light-transmitting window) 50 (described later). Although not shown in FIGS. 2A and 2B, the existing glass window 50 is positioned on the left side so as to face the opposing glass window 40 on the right side. The spacer 60 includes a first spacer 70 and a second spacer 80. The first spacer 70 and the second spacer 80 may have a uniform cross-sectional shape extending in a direction perpendicular to the plane of the paper in FIGS. 2A and 2B.

[0052] Depending on the application, the spacer portion 60 (first spacer portion 70 and second spacer portion 80) may be made of metal materials such as aluminum, aluminum alloy, or SUS, or may be made of plastic materials such as polypropylene, polystyrene, or ABS resin, and the design can be enhanced by matching the appearance and color with surrounding materials such as the window frame.

[0053] 2A and 2B, the first spacer portion 70 has a vertical extension portion 71 that extends vertically so as to cover the peripheral edge of the surface of the opposing glass window 40 opposite the existing glass window 50 (the upper edge of the right side in the figures), and a horizontal extension portion 72 that is bent vertically (approximately vertically) from the upper end of the vertical extension portion 71 and extends toward the existing glass window 50 (to the left in the figures). The vertical extension portion 71 and the horizontal extension portion 72 configure the first spacer portion 70 to have a cross-sectional shape that covers the peripheral edge of the surface of the opposing glass window 40 opposite the existing glass window 50 and extends toward the existing glass window 50.

[0054] As shown in the cross-sectional views of FIGS. 2A and 2B, the second spacer portion 80 is positioned between the existing glass window 50 and the light control sheet 10 on the surface of the opposing glass window 40 facing the existing glass window 50. The second spacer portion 80 has a cross-sectional shape in which the upper, left, and right sides are completely blocked by the upper, left, and right wall portions in the figures, and most of the lower side is blocked by the lower wall portion having a through-hole formed in the center. The second spacer 80 holds a moisture-absorbing material 82 in an internal chamber 81 surrounded by the upper, lower, left, and right wall portions. The through-hole formed in the lower wall portion of the second spacer 80 may be used as an air inlet for the gap between the frame containing the moisture-absorbing material 82 (e.g., the second spacer 80) and the glass (the opposing glass window 40 or the existing glass window 50).

[0055] In the cross-sectional view of FIG. 2A , an adhesive layer (joint) 90 is provided across the left end of the horizontally extending portion 72 of the first spacer portion 70 and the left wall portion of the second spacer portion 80. In the cross-sectional view of FIG. 2B , the adhesive layer (joint) 90 is provided so as to overlap the upper surface of the horizontally extending portion 72 of the first spacer portion 70. The adhesive layer (joint) 90 bonds (bonds) the dimming module 1 to at least one of the existing glass window 50 and its supporting structure (e.g., a glass sash, etc.). That is, at least one of the first spacer portion 70 and the second spacer portion 80 has an adhesive layer (joint) 90 for bonding to at least one of the existing glass window 50 and its supporting structure (e.g., a glass sash, etc.). This allows the dimming module 10 to be positioned, fixed, and supported on the existing glass window 50.

[0056] 2A and 2B, the opposing glass window 40, the light controlling sheet 10, and the electrode unit 20X are provided between the vertical extension 71 of the first spacer unit 70 and the right wall of the second spacer unit 80, and the electrode unit 20X is supported in an extremely narrow space between the light controlling sheet 10 and the right wall of the second spacer unit 80. Furthermore, the wiring unit 30X routed from the electrode unit 20X is supported in an extremely narrow space between the horizontal extension 72 of the first spacer unit 70 and the upper wall of the second spacer unit 80. In other words, the electrode unit 20X and the wiring unit 30X as drive voltage application units can be suitably supported (for example, protected, hidden, stored, guided, or housed in a removable manner) between the first spacer unit 70 and the second spacer unit 80.

[0057] Furthermore, when we look at the second spacer portion 80, the second spacer portion 80 supports the electrode portion 20X and the wiring portion 30X along its outer casing (right wall portion and upper wall portion) and holds a moisture-absorbing material 82 in its internal chamber 81. This allows the outer casing (right wall portion and upper wall portion) of the second spacer portion 80 to support the electrode portion 20X and the wiring portion 30X with efficient layout. Furthermore, by creating a low-humidity state in the airtight space between the existing glass window 50 and the opposing glass window 40, moisture intrusion from the edge of the light-controlling sheet 10 is prevented, ensuring and maintaining an environment favorable for maintaining the overall quality of the light-controlling sheet 10. Additionally, the moisture-absorbing material 82 held in the internal chamber 81 of the second spacer portion 80 is effective in absorbing moisture mainly in the gap between the glass panes and preventing condensation.

[0058] Furthermore, the gap in the holding space for the electrode part 20X and the wiring part 30X formed by the light-controlling sheet 10 and the spacer part 60 (first spacer part 70 and second spacer part 80) is filled with a sealing material (adhesive) 100, enabling more optimal support (stability, strong protection, fixation) of the electrode part 20X and the wiring part 30X.

[0059] Furthermore, a notch or hole may be provided in at least a portion of the spacer portion 60 (first spacer portion 70 and second spacer portion 80) (for example, the horizontally extending portion 72 of the first spacer portion 70, or a wall portion of the second spacer portion 80 other than the lower wall portion in which the through-hole is formed), and used as an extraction portion (draw-out portion) for the wiring portions 30X, 30Y. When the extraction portion (draw-out portion) for the wiring portions 30X, 30Y is provided in the second spacer portion 80, the wiring portions 30X, 30Y may be guided so as to pass through an internal chamber 81 in which a moisture absorbent material 82 is held.

[0060] Although the cross-sectional views of FIGS. 2A and 2B illustrate the support structure for the electrode portion 20X and the wiring portion 30X, a similar support structure can also be applied to the electrode portion 20Y and the wiring portion 30Y.

[0061] 3A, 3B, 3C, 3D, 3E, 3F, and 3G are second views showing the light control module 1 of this embodiment in the order of assembly steps.

[0062] In FIG. 3A, a light-controlling sheet 10 including electrode portions 20X, 20Y and wiring portions 30X, 30Y as drive voltage application portions is attached (adhered) to an opposing glass window 40. In FIG. 3B, a sealant (adhesive) 100 is formed to cover the electrode portions 20X, 20Y and portions of the wiring portions 30X, 30Y (the base portions on the electrode side). In FIG. 3C, a second spacer portion 80 is attached to further cover the electrode portions 20X, 20Y and portions of the wiring portions 30X, 30Y (the base portions on the electrode side) and the sealant 100. In FIG. 3D, the wiring portions 30X, 30Y are bent and guided to fit along the upper surface of the upper wall portion of the second spacer portion 80. In FIG. 3E, the sealant 100 is formed to cover the upper wall portion of the second spacer portion 80, including the bent portions of the wiring portions 30X, 30Y, and the first spacer portion 70 is then placed and fixed on top of it. In Fig. 3F, an adhesive layer (joint) 90 is formed so as to straddle the left end of the horizontally extending portion 72 of the first spacer portion 70 and the left wall portion of the second spacer portion 80. In Fig. 3G, an adhesive layer (joint) 90 is formed so as to overlap the upper surface of the horizontally extending portion 72 of the first spacer portion 70. Fig. 3F shows a formation mode of the adhesive layer 90 corresponding to Fig. 2A, and Fig. 3G shows a formation mode of the adhesive layer 90 corresponding to Fig. 2B. Fig. 3F (Fig. 2A) and Fig. 3G (Fig. 2B) may employ either one of them, or both of them may be employed.

[0063] In this way, a light control module with a light control film attached to glass can be fitted with a spacer for joining the module to an existing glass window, a structure that conceals the electrodes of the light control film and protects the electrodes, and these are fixed in place by covering the electrode section with an adhesive that also seals the electrodes. Wiring is routed over the spacer and arranged so that it can be pulled out together from the corner and fixed in place with an adhesive that also acts as a sealant. An L-shaped member is then fixed on top of this to hide the electrodes on the glass surface with an adhesive applied to the wiring. Finally, an adhesive layer is applied so that the module can be fixed to the glass surface or window frame of an existing glass window. Furthermore, because the wiring path is covered with a sealant and covered with an electrode hider, airtightness can be maintained by sealing the wiring outlet.

[0064] Figures 4A and 4B are first and second diagrams showing the configuration of a double-glazing glass device 1X of this embodiment. Figure 5 is a cross-sectional view taken along line VV in Figure 4B. Figure 6 is a cross-sectional view taken along line VI-VI in Figure 4B. Figures 7A, 7B, and 7C are first, second, and third cross-sectional views taken along line VII-VII in Figure 4B. The outdoor side and indoor side in Figures 5 to 7 are determined based on the directions of the arrows shown in the figures.

[0065] The insulating glass device 1X has the above-described light control module 1 attached (fixed) to at least one of an existing glass window 50 and its support structure.

[0066] The existing glass window 50 is fitted into a window opening formed in a wall 51 of a building, house, or the like. FIGS. 4A and 4B also show a ceiling 52 connected to the upper end of the wall 51. The existing glass window 50 is attached to a sash member (external window frame) 53 as a supporting structure via a rubber gasket (bead), a sealing seal, a setting block, sponge rubber, and the like, which also serve as supporting structures. In FIG. 4B, the sealing seal is denoted by the reference numeral 54. The sealing seal 54 is installed to seal the gap between the outer edge of the dimming module 1 (opposing glass window 40) and the existing glass window 50 or its supporting structure, thereby creating an airtight and sealed structure for the opposing space between the existing glass window 50 and the opposing glass window 40. FIG. 4A shows the state in which the sealing seal 54 is not installed, while FIG. 4B shows the state in which the sealing seal 54 is installed. 4A shows a sponge rubber 55 and a setting block 56 that help support the lower end of the opposing glass window 40. In FIG. 4B, the sponge rubber 55 and the setting block 56 are hidden by a sealing seal 54.

[0067] 5, sash member 53 has a receiving recess 53A that receives the upper end of existing glass window 50, and this receiving recess 53A supports the upper end of existing glass window 50 in a sealed and airtight state via rubber gasket (bead) 57A. In addition, a sealing seal 54A is provided at the boundary between sash member 53 and the bent portions of vertically extending portion 71 and horizontally extending portion 72 of first spacer portion 70, thereby ensuring (guaranteeing) the sealed and airtight state.

[0068] As shown in the cross-sectional view of Figure 6, sash member 53 has a receiving recess 53B that receives the lower end of existing glass window 50, and this receiving recess 53B supports the lower end of existing glass window 50 in a sealed and airtight state via rubber gasket (bead) 57B. Furthermore, setting block 56B1 is attached to the lower end of existing glass window 50, and setting block 56B2 is attached to the lower end of opposing glass window 40. Furthermore, sealing seal 54B is provided at the boundary between sash member 53 and the lower ends of opposing glass window 40 and setting block 56B2, thereby ensuring (assuring) a sealed and airtight state.

[0069] As shown in the cross-sectional views of Figures 7A to 7C, sash member 53 has a receiving recess 53C that receives the side edge of existing glass window 50, and this receiving recess 53C supports the side edge of existing glass window 50 in a sealed and airtight state via rubber gasket (bead) 57C. Furthermore, a sealing seal 54C1 is provided at the boundary between the side of existing glass window 50 (the attachment portion of rubber gasket 57C) and sash member 53, and a sealing seal 54C2 is provided at the boundary between the side edge of opposing glass window 40 and sash member 53, thereby ensuring (guaranteeing) a sealed and airtight state. Figure 7A illustrates an example in which the boundary between the side edge of opposing glass window 40 and sash member 53 is sealed with sealing seal 54C2 alone. 7B illustrates an example in which a first-shaped rubber packing 57C1 is added to sealing seal 54C2 and they work together to seal the boundary between the side edge of opposing glass window 40 and sash member 53. FIG. 7C illustrates an example in which a second-shaped rubber packing 57C2 is added to sealing seal 54C2 and they work together to seal the boundary between the side edge of opposing glass window 40 and sash member 53. The first shape of rubber packing 57C1 has a flat portion against which the side edge of opposing glass window 40 abuts, and the second shape of rubber packing 57C2 has a receiving recess that holds the side edge of opposing glass window 40.

[0070] In this way, the rubber packings (57C, 57C1, 57C2) alone as the sealed / airtight structure can ensure a sufficiently sealed / airtight state in implementation, but by adding and cooperating with the sealing seals (54C1, 54C2), a more reliable sealed / airtight state can be created. Also, it is possible to implement only the sealing seals as the sealed / airtight structure without implementing the rubber packings. In other words, the sealed / airtight structure only needs to be equipped with at least one of the rubber packings and the sealing seals.

[0071] The sealing seals (54, 54A, 54B, 54C1, 54C2) and rubber gaskets (beads) (57A, 57B, 57C, 57C1, 57C2) illustrated in Figures 7A to 7C constitute a "sealed and airtight structure" for making the opposing space between the existing glass window 50 and the opposing glass window 40 into a sealed and airtight structure.

[0072] FIG. 8 is a cross-sectional view taken along line VV in FIG. 4B, which is different from FIG. 5. FIGS. 5 and 8 differ in the position at which an adhesive layer (joint) 90 is provided on the spacer portion 60 (the first spacer portion 70 and the second spacer portion 80). FIG. 5 corresponds to FIG. 2A, and FIG. 8 corresponds to FIG. 2B. In FIG. 5, the adhesive layer 90 directly fixes the dimming module 1 to the existing glass window 50. In contrast, in FIG. 8, the adhesive layer 90 fixes the dimming module 1 to a sash member 53, which is a support structure for the existing glass window 50. That is, the adhesive layer 90 indirectly fixes the dimming module 1 to the existing glass window 50. More specifically, the adhesive layer 90, which is formed so as to overlap the upper surface of the horizontally extending portion 72 of the first spacer portion 70, is bonded to the flat mounting portion of the sash member 53, thereby indirectly fixing the dimming module 1 to the existing glass window 50 via the sash member 53.

[0073] 9A and 9B are diagrams showing a first modified example of the mounting structure of the dimming module 1 and the existing glass window 50. Fig. 9A is a modified example of the cross-sectional view taken along line VV in Fig. 4B, and Fig. 9B is a modified example of the cross-sectional view taken along line VI-VI in Fig. 4B.

[0074] 9A and 9B, a frame portion 110 serving as an additional support structure extending further toward the interior of the room is connected to the interior-side end of the sash member 53. As shown in FIG. 9A, an adhesive layer 90 formed so as to overlap the upper surface of the horizontally extending portion 72 of the first spacer portion 70 is adhered to the flat mounting portion of the frame portion (support structure) 110, thereby indirectly fixing the dimming module 1 to the existing glass window 50 via the sash member 53 and the frame portion 110. Furthermore, as shown in FIG. 9B, the lower end portion (setting block 56B2) of the opposing glass window 40 of the dimming module 1 is supported by the flat mounting portion of the frame portion (support structure) 110 in a sealed and airtight state by the sealing seal 54B.

[0075] 10A and 10B are diagrams showing a second modified example of the mounting structure of the dimming module 1 and the existing glass window 50. Fig. 10A is a modified example of the cross-sectional view taken along line VV in Fig. 4B, and Fig. 10B is a modified example of the cross-sectional view taken along line VI-VI in Fig. 4B.

[0076] 10A and 10B, a frame portion 110 serving as an additional support structure extending further toward the interior of the room is connected to the interior-side end of the sash member 53. As shown in Fig. 10A, the upper surface of the horizontal extension portion 72 of the first spacer portion 70 is abutted against the flat mounting portion of the frame portion (support structure) 110. Also provided is an L-shaped fastener 120 having a vertical extension portion 121 where the left end of the horizontal extension portion 72 of the first spacer portion 70 and the left wall portion of the second spacer portion 80 are joined (adhered) via an adhesive layer 90 that spans these portions, and a horizontal extension portion 122 that is bent at a right angle (approximately a right angle) from this vertical extension portion 121 and is continuous with the horizontal extension portion 72 of the first spacer portion 70 and follows the flat mounting portion of the frame portion (support structure) 110. By inserting a connecting screw 123 into an insertion hole formed in a horizontally extending portion 122 of the L-shaped fixture 120 and screwing it into the frame portion 110, the dimming module 1 is indirectly fixed to the existing glass window 50 via the sash member 53, the frame portion 110, and the L-shaped fixture 120 (including the connecting screw 123). Also, as shown in Fig. 10B , the lower end portion (setting block 56B2) of the opposing glass window 40 of the dimming module 1 is supported by the flat mounting portion of the frame portion (support structure) 110 in a sealed and airtight state by the sealing seal 54B.

[0077] 11A and 11B are diagrams showing first and second examples of the arrangement of the first spacer portion 70 and the second spacer portion 80. FIG.

[0078] In the example of Figure 3G described above, the first spacer portion 70 and the second spacer portion 80 are installed in the region corresponding to the upper edge of the rectangular (approximately rectangular) peripheral portion of the opposing glass window 40, and the first spacer portion 70 and the second spacer portion 80 are not installed in the other regions corresponding to the lower edge, left edge, and right edge.

[0079] 11A, the first spacer portion 70 is provided in a region corresponding to the upper edge of the rectangular (substantially rectangular) peripheral edge of the opposing glass window 40, and the first spacer portion 70 is not provided in the remaining regions corresponding to the lower, left, and right edges. Also, the second spacer portion 80 is provided over the entire rectangular (substantially rectangular) peripheral edge of the opposing glass window 40 (regions corresponding to the upper, lower, left, and right edges).

[0080] 11B, a first spacer portion 70 is provided in a region corresponding to the upper edge of the rectangular (substantially rectangular) peripheral edge of the opposing glass window 40, and a first spacer portion 70 is not provided in the remaining regions corresponding to the lower, left, and right edges. Also, a second spacer portion 80 is provided in a region corresponding to the upper and lower edges of the rectangular (substantially rectangular) peripheral edge of the opposing glass window 40, and a second spacer portion 80 is not provided in the remaining regions corresponding to the left and right edges.

[0081] The structures are not limited to those exemplified above, and it is sufficient that the first spacer portion 70 is disposed corresponding to a partial or entire area of ​​the peripheral edge of the opposing glass window 40, and the second spacer portion 80 is disposed corresponding to a partial or entire area of ​​the peripheral edge of the opposing glass window 40. This makes it possible to configure the first spacer portion 70 and the second spacer portion 80 in a manner that flexibly corresponds to the combination of the shapes of the opposing glass window 40 and the existing glass window 50, etc.

[0082] 12A, 12B, and 12C are diagrams showing a modified example in which a gas inlet / outlet hole 130 is formed in the spacer portion 60 (second spacer portion 80). FIG. 12A is a perspective view showing the first spacer portion 70 and the second spacer portion 80 attached to each other, and FIG. 12B is the perspective view of FIG. 12A with the first spacer portion 70 omitted. In both cases, the gas inlet / outlet hole 130 is formed adjacent to the side of the attachment surface of the adhesive layer 90 in the second spacer portion 80. FIG. 12C shows a resin part having the gas inlet / outlet hole 130 attached to the end of the second spacer portion 80, with the part slightly protruding beyond the end of the opposing glass window 40. The gas inlet / outlet hole 130 has a check valve, allowing gas to be introduced or released by passing a small-diameter tube through it. The structure is such that internal gas does not leak when the tube is removed, but the gas inlet / outlet hole 130 is ultimately sealed.

[0083] 12A to 12C, the gas inlet / outlet hole 130 is formed in the second spacer portion 80, but the gas inlet / outlet hole 130 may also be formed in the first spacer portion 70. That is, at least one of the first spacer portion 70 and the second spacer portion 80 needs to have the gas inlet / outlet hole 130 that allows gas to enter and exit the facing space between the existing glass window 50 and the opposing glass window 40. This gas inlet / outlet hole 130 may be used to at least one of evacuate and reduce the pressure of the air in the facing space between the existing glass window 50 and the opposing glass window 40 and replace it with an inert gas, thereby creating a sealed and airtight structure.

[0084] When the sealing seals (54, 54A, 54B, 54C1, 54C2) and rubber gaskets (beads) (57A, 57B, 57C, 57C1, 57C2) serving as the above-described "sealed and airtight structure" are properly installed, only the gas inlet / outlet hole 130 serves as a path connecting the facing space between the existing glass window 50 and the facing glass window 40. After at least one of degassing and reducing the pressure of the air in the facing space between the existing glass window 50 and the facing glass window 40 and replacing it with an inert gas is performed through the gas inlet / outlet hole 130 (for example, after degassing and reducing the pressure and then replacing it with an inert gas), closing the gas inlet / outlet hole 130 ensures (guarantees) the sealed and airtight structure of the facing space. This prevents condensation between the existing glass window 50 and the facing glass window 40, as well as associated electrical leakage or malfunctions, and even thermal cracking. In addition, damage to the existing glass window 50, the opposing glass window 40, and even the light-control sheet 10 can be prevented (for example, scratches and dirt caused by inadvertent contact with people or objects in order to achieve an airtight and sealed structure can be prevented).

[0085] 13A and 13B are diagrams showing a modified example in which a tip-over prevention part 140 is formed on the spacer part 60 (first spacer part 70). In this modified example, a frame part 110 is connected to the indoor-side end of the sash member 53 as an additional support structure that further extends indoors (FIG. 13B). Furthermore, a tip-over prevention part 140 is provided that extends from the connection part between the vertical extension part 71 and the horizontal extension part 72 of the first spacer part 70 to the side opposite the horizontal extension part 72, so that the upper surface of the tip-over prevention part 140 abuts against (fits along) the flat mounting surface of the frame part 110. Furthermore, by inserting a connecting screw 141 into an insertion hole formed in the tip-over prevention part 140 and screwing it into the frame part 110, the dimming module 1 is indirectly fixed to the existing glass window 50 via the sash member 53, the frame part 110, and the tip-over prevention part 140 (including the connecting screw 141). Moreover, the tip-over prevention section 140 prevents the dimming module 1 from tipping over onto the existing glass window 50.

[0086] Thus, the dimming module of this embodiment is a dimming module attached to an existing light-transmitting window, and includes an opposing light-transmitting window facing the existing light-transmitting window, a light-controlling sheet attached to the opposing light-transmitting window, a drive voltage application unit that applies a drive voltage to the light-controlling sheet, and a spacer unit that supports the drive voltage application unit and positions the dimming module on the existing light-transmitting window. The multi-layered light-transmitting device of this embodiment is a multi-layered light-transmitting device in which a dimming module is attached to an existing light-transmitting window, and the dimming module has an opposing light-transmitting window facing the existing light-transmitting window, a light-controlling sheet attached to the opposing light-transmitting window, a drive voltage application unit that applies a drive voltage to the light-controlling sheet, and a spacer unit that supports the drive voltage application unit and positions the dimming module on the existing light-transmitting window. This allows for improved structure when attaching a dimming module to an existing light-transmitting window to form a multi-layered light-transmitting device.

[0087] In one aspect, the light control module and double-glazing device of this embodiment are light control film-coated glass modules that can be retrofitted to existing glass windows (sashes) without replacing the glass. They include an electrode protection structure, an electrode hiding structure, a spacer with a wiring route (wiring termination), and an adhesive layer on at least one side, enabling a sealed structure equivalent to that of double-glazing after installation. This allows installation on existing single-glazed exterior windows without worrying about problems such as condensation and thermal cracking. Furthermore, the module can be installed as a unit without replacing the existing glass. In addition to adding light control functionality as an alternative to curtains or blinds, the double-glazed system can also provide added value, such as thermal insulation, heat protection, and condensation prevention. Furthermore, because the light control film is installed inside the glass, it is protected from external contact and scratches, improving appearance maintenance and reliability. Furthermore, the system can be easily installed on large projects, such as exterior windows in existing buildings, by simplifying on-site work. Furthermore, because the process of attaching the glass, protecting the electrodes, hiding the electrodes, and arranging the wiring can be completed in the factory (meaning it is completed when the dimming module is manufactured), weak points in dimming installation can be reduced and a high level of quality control can be maintained. Furthermore, when used indoors as well as on exterior windows, it is possible to realize a privacy protection structure that also includes soundproofing. Furthermore, in the unlikely event of deterioration or malfunction, it is possible to replace only the retrofit unit without replacing the window itself.

[0088] The present invention is not limited to the above-described embodiments, and various modifications can be made in the implementation stage without departing from the spirit of the invention. Furthermore, the embodiments may be implemented in appropriate combinations, in which case the combined effects can be obtained. Furthermore, the above-described embodiments include various inventions, and various inventions can be extracted by combining selected elements from the disclosed elements. For example, if the problem can be solved and the desired effect can be obtained even if some elements are deleted from all elements shown in the embodiments, the configuration from which these elements are deleted can be extracted as an invention. [Explanation of symbols]

[0089] 1 Dimming Module 1x Double Glazing Device (Double Glazing Device) 10. Light-controlling sheet (light-controlling film) 11 Peripheral sealing portion 20X 20Y Electrode section (driving voltage application section) 30X 30Y Wiring section (drive voltage application section) 40 Opposite glass window (opposite translucent window) 50 Existing glass window (existing translucent window) 51 Wall 52 Ceiling 53 Sash components (outer window frames) (support structures) 53A 53B 53C Recessed portion 54 54A 54B 54C1 54C2 Sealing seal (sealed / airtight structure) 55 sponge rubber 56 56B1 56B2 Setting block 57A 57B 57C 57C1 57C2 Rubber packing (sealed / airtight structure) 60 Spacer part 70 first spacer portion 71 Vertical extension section 72 Horizontal extension part 80 second spacer part 81 Inner chamber 82 Moisture absorbent material 90 Adhesive layer (joint part) 100 Sealant (adhesive) 110 Frame (support structure) 120 L-shaped fixture 121 Vertical extension section 122 Horizontal extension section 123 Coupling screw 130 Gas inlet / outlet 140 Fall prevention unit 141 Coupling screw

Claims

1. A dimming module that can be attached to an existing translucent window, an opposing light-transmitting window facing the existing light-transmitting window; a light-controlling sheet attached to the opposing light-transmitting window; a driving voltage application unit that applies a driving voltage to the light controlling sheet; a spacer portion that supports the drive voltage application portion and positions the light control module on the existing light-transmitting window; A dimming module comprising:

2. The driving voltage application unit has an electrode unit attached to the light controlling sheet and a wiring unit connected to the electrode unit. The dimming module according to claim 1 .

3. The light-controlling sheet is attached to a surface of the opposing light-transmitting window on the side of the existing light-transmitting window, The spacer portion is a first spacer portion covering a peripheral portion of a surface of the opposing light-transmitting window opposite to the existing light-transmitting window and extending toward the existing light-transmitting window; a second spacer portion positioned between the existing light-transmitting window and the light controlling sheet on a surface of the opposing light-transmitting window facing the existing light-transmitting window; and the electrode portion and the wiring portion are supported between the first spacer portion and the second spacer portion; The dimming module according to claim 2 .

4. the second spacer portion supports the electrode portion and the wiring portion along its outer casing and holds a moisture absorbent material in its internal chamber; The dimming module according to claim 3 .

5. at least one of the first spacer portion and the second spacer portion has a joint portion for joining to at least one of the existing light-transmitting window and its supporting structure; The dimming module according to claim 3 .

6. At least one of the first spacer portion and the second spacer portion has a gas inlet / outlet hole that allows gas to enter and exit a space between the existing light-transmitting window and the opposing light-transmitting window. The dimming module according to claim 3 .

7. the gas inlet / outlet hole is used to perform at least one of degassing / decompressing the air in the opposing space between the existing light-transmitting window and the opposing light-transmitting window and replacing the air with an inert gas to form a sealed / airtight structure. The dimming module according to claim 6 .

8. the first spacer portion is disposed so as to correspond to a partial area or the entire area of ​​a peripheral edge portion of the opposing light-transmitting window, the second spacer portion is disposed so as to correspond to a partial area or the entire area of ​​a peripheral edge portion of the opposing light-transmitting window; The dimming module according to claim 3 .

9. The spacer portion has a tip-over prevention portion that prevents the light control module from tipping over with respect to the existing light-transmitting window. The dimming module according to claim 1 .

10. A multi-layered light-transmitting device in which a light control module is attached to an existing light-transmitting window, The dimming module comprises: an opposing light-transmitting window facing the existing light-transmitting window; a light-controlling sheet attached to the opposing light-transmitting window; a driving voltage application unit that applies a driving voltage to the light controlling sheet; a spacer portion that supports the drive voltage application portion and positions the light control module on the existing light-transmitting window; A multi-layered light transmitting device comprising:

11. a sealed / airtight structure for forming a sealed / airtight structure in the opposing space between the existing light-transmitting window and the opposing light-transmitting window; 11. The multi-layered light transmitting device according to claim 10.

Images