Bathroom lighting control system

Abstract

To provide a bathroom lighting control system that increases durability of a lighting control sheet placed on bathroom door.SOLUTION: A bathroom door that opens inside the bathroom when the door is opened is equipped with a door transparent plate 52, in a bathroom lighting control system that is provided with a lighting control sheet 10 that is disposed on the exterior surface of the door transparent plate 52 and reversibly switched from transparent to opaque by supplying a voltage signal VA and a power supply circuit 20 that switches between supplying and stopping supplying the voltage signal VA based on input from an operation part 40, an interlock switch 30 is provided that connected in series between the power supply circuit 20 and the lighting control sheet 10, and closes the supply circuit of the voltage signal VA when the bathroom door is closed, and opens the supply circuit when the bathroom door is opened.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a bathroom dimming system including a dimming sheet that can be reversibly switched from transparent to opaque.

Background Art

[0002] The dimming sheet includes a dimming layer and a pair of transparent electrode sheets sandwiching the dimming layer. The dimming layer includes a transparent resin layer partitioning a plurality of voids and a liquid crystal composition filling the voids. A voltage signal supplied between the two transparent electrode layers changes the refractive index difference between the liquid crystal composition and the transparent resin layer. The change in the refractive index difference between the liquid crystal composition and the transparent resin layer reversibly changes the state of the dimming sheet from transparent to opaque. The reverse-type dimming sheet includes an alignment layer between the dimming layer and the transparent electrode layer. The liquid crystal compound receiving an alignment regulating force from the alignment layer makes the dimming sheet transparent when the supply of the voltage signal stops. The supply of the voltage signal applying a force against the alignment regulating force to the liquid crystal compound makes the dimming sheet opaque (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] A dimmable sheet that reversibly switches from transparent to opaque achieves both the visual expansion of the space partitioned by the sheet and the protection of privacy within that space. From the perspective of providing comfortable spatial design, there is a strong demand for visually opening up enclosed spaces that are used for short periods of time within living spaces that are used for long periods. For example, if a dimmable sheet is applied to a bathroom door, it allows for the conventional protection of privacy within the bathroom space while the transparent sheet opens up the enclosed bathroom space to the living space. On the other hand, if a dimmable sheet supplied with a voltage signal is exposed to hot water or steam, moisture can easily penetrate the dimming layer from the edges of the sheet. Contact between the liquid crystal composition and water degrades the electrical properties of the liquid crystal compound, rendering the reversible switching of the dimmable sheet impossible. [Means for solving the problem]

[0005] A bathroom dimming system to solve the above problems comprises a bathroom door that opens into the bathroom when opened and is equipped with a transparent plate, a dimming sheet positioned on the exterior surface of the transparent plate and reversibly switching from transparent to opaque by the supply of a voltage signal, and a power supply circuit that switches the supply and desupply of the voltage signal based on the input of an operating unit, wherein an interlock switch is connected in series between the power supply circuit and the dimming sheet and closes the voltage signal supply circuit when the bathroom door is closed and opens the supply circuit when the bathroom door is opened.

[0006] According to the above configuration, the interlock switch closes the supply circuit when the bathroom door is closed, and opens the supply circuit when the bathroom door is opened. The bathroom door is required to protect privacy within the bathroom space while the bathroom is in use. When the bathroom is in use with the bathroom door closed, privacy protection can be achieved by the opacity of the dimming sheet through the closure of the supply circuit by the interlock switch. Before and after use of the bathroom with the bathroom door open, the supply circuit is opened by the interlock switch, making it difficult for a voltage signal to be supplied to the dimming sheet that is exposed to hot water or steam. As a result, the bathroom door is given a transparency suitable for when the bathroom is in use and when it is not, and the durability of the dimming sheet installed on the bathroom door is increased.

[0007] In the above-described bathroom dimming system, the power supply circuit may monitor the closing and opening of the supply circuit, and when it detects the opening by the interlock switch, it may stop generating the voltage signal.

[0008] With the above configuration, the generation of the voltage signal is stopped by opening the supply circuit via the interlock switch. As a result, the durability of the dimming sheet installed on the bathroom door is increased, and the power consumption required to generate the voltage signal is suppressed.

[0009] In the above-described bathroom dimming system, the transparent panel is a door transparent panel, the dimming sheet is a first dimming sheet, the voltage signal is a first voltage signal, the supply circuit is a first supply circuit, the bathroom wall further comprises a wall transparent panel, the bathroom dimming system further comprises a second dimming sheet disposed on the exterior surface of the wall transparent panel and reversibly switching from transparent to opaque by the supply of a second voltage signal, and the power supply circuit may switch the supply and desupply of the second voltage signal based on the input of the operation unit via a second supply circuit that connects the second dimming sheet to the power supply circuit without going through the interlock switch.

[0010] With the above configuration, regardless of whether the first supply circuit is opened by the interlock switch, the second dimming sheet switches from transparent to opaque based on the input from the operating unit. This allows for the independent realization of states where the bathroom wall is transparent and the bathroom door is transparent, where the bathroom wall is opaque and the bathroom door is transparent, where the bathroom wall is transparent and the bathroom door is opaque, and where the bathroom wall is opaque and the bathroom door is opaque. Therefore, the convenience of bathroom dimming is enhanced.

[0011] In the above-described bathroom dimming system, the bathroom door may have only one transparent panel, and the dimming sheet may be attached to the exterior surface of the transparent panel to constitute the exterior surface of the bathroom door.

[0012] In the above-described bathroom dimming system, the transparent plate is an indoor substrate, the bathroom door further comprises an outdoor substrate disposed on the outdoor side relative to the indoor substrate, and the dimming sheet may be sealed between the indoor substrate and the outdoor substrate.

[0013] According to the above configurations, exposure of the dimming sheet to hot water or steam is also suppressed by the placement of the dimming sheet, thus further increasing the durability of the dimming sheet installed on the bathroom door. [Effects of the Invention]

[0014] The above bathroom dimming system enhances the durability of the dimming sheet installed on the bathroom door. [Brief explanation of the drawing]

[0015] [Figure 1] Figure 1 is a diagram showing the configuration of a bathroom lighting control system. [Figure 2] Figure 2 is a cross-sectional view showing the configuration of the dimming sheet. [Figure 3] Figure 3 is a diagram illustrating the operation of the bathroom lighting control system. [Figure 4] Figure 4 is a diagram illustrating the operation of the bathroom lighting control system. [Figure 5]FIG. 5 is an operational diagram showing the operation of the bathroom dimming system.

Mode for Carrying Out the Invention

[0016] [Bathroom Dimming System] As shown in FIG. 1, the bathroom 50 is partitioned by the bathroom peripheral wall into a bathroom space 50S. The bathroom peripheral wall includes a transparent wall and a bathroom door. The transparent wall is an example of a bathroom wall and includes a wall transparent plate 51. The bathroom door includes a door transparent plate 52 and a detected portion 52T. The constituent materials of each of the transparent plates 51 and 52 may each independently be a transparent resin or a transparent inorganic glass. An example of the transparent resin is any one selected from the group consisting of polyester, polyacrylate, polyolefin, and polycarbonate. An example of the transparent inorganic glass is any one selected from the group consisting of silicon oxide, silicon oxynitride, and silicon nitride.

[0017] The detected portion 52T is close to the interlock switch 30 when the bathroom door is closed. The detected portion 52T causes the interlock switch 30 to detect that the bathroom door is closed. The detected portion 52T causes the interlock switch 30 to detect the opening of the bathroom door. The detected portion 52T may act magnetically or mechanically with the interlock switch 30.

[0018] The dimming sheets 10 are respectively arranged on the wall transparent plate 51 and the door transparent plate 52. The dimming sheets 10 constitute the bathroom dimming system. Each dimming sheet 10 is independently sandwiched between two transparent base materials. FIG. 2 shows an example in which the dimming sheet 10 is sandwiched between two transparent base materials.

[0019] [Dimming Sheet 10] As shown in FIG. 2, the two transparent substrates sandwiching the dimming sheet 10 are an indoor substrate 53A and an outdoor substrate 53B. The indoor substrate 53A faces the bathroom space 50S. The indoor substrate 53A may be another transparent plate different from each of the transparent plates 51, 52, or may be each of the transparent plates 51, 52. The indoor substrate 53A and the outdoor substrate 53B may each independently be the above-described transparent resin or transparent inorganic glass. The dimming sheet 10 is joined to each of the substrates 53A, 53B via a water-resistant intermediate film. The dimming sheet 10 is sealed between the indoor substrate 53A and the outdoor substrate 53B.

[0020] Note that the dimming sheet 10 may be adhered to the outdoor surfaces of each of the transparent plates 51, 52. The transparent adhesive layer for adhering the dimming sheet 10 to each of the transparent plates 51, 52 is an OCA film (Optical Clear Adhesive film). The dimming sheet 10 adhered to the outdoor surface of the wall transparent plate 51 constitutes the outdoor surface of the bathroom wall. The dimming sheet 10 adhered to the outdoor surface of the door transparent plate 52 constitutes the outdoor surface in the closed bathroom door.

[0021] [[ID=⑧]]The drive type of the dimming sheet 10 is a reverse type. The dimming sheet 10 applied to the reverse type transitions from transparent to opaque by the supply of voltage signals VA, VB, and returns from opaque to transparent by the stop of the supply of voltage signals VA, VB. That is, the dimming sheet 10 applied to the reverse type is reversibly switched from transparent to opaque by the supply of voltage signals VA, VB.

[0022] It should be noted that in the original text, there is a number "⑧" which may be an error. It is translated as "⑧" here for the sake of consistency with the original. If it is a misprint, it should be corrected in the original text.The dimming sheet 10 comprises a first transparent electrode sheet 11, a second transparent electrode sheet 12, and a dimming layer 13. The first transparent electrode sheet 11 comprises a first transparent substrate film 11A, a first transparent electrode layer 11B, and a first orientation layer 11C. The second transparent electrode sheet 12 comprises a second transparent substrate film 12A, a second transparent electrode layer 12B, and a second orientation layer 12C. The first transparent electrode layer 11B is supported by the first transparent substrate film 11A. The first orientation layer 11C is supported by the first transparent electrode layer 11B. The second transparent electrode layer 12B is supported by the second transparent substrate film 12A. The second orientation layer 12C is supported by the second transparent electrode layer 12B.

[0023] The constituent materials of each transparent substrate film 11A and 12A may be the transparent resin described above or transparent inorganic glass, respectively. The constituent materials of each transparent electrode layer 11B and 12B are selected from the group consisting of conductive inorganic oxides, metals, and conductive organic polymer compounds. An example of a conductive inorganic oxide is selected from the group consisting of indium tin oxide, fluorine-doped tin oxide, tin oxide, and zinc oxide. The metal is gold or silver nanowire. An example of a conductive organic polymer compound is selected from the group consisting of carbon nanotubes and poly(3,4-ethylenedioxythiophene).

[0024] Each alignment layer 11C and 12C applies an alignment restricting force to the liquid crystal compound of the light-adjusting layer 13. The alignment restricting force applied by each alignment layer 11C and 12C to the liquid crystal compound makes the light-adjusting layer 13 transparent. The first transparent electrode layer 11B is positioned between the first transparent substrate film 11A and the first alignment layer 11C. The second transparent electrode layer 12B is positioned between the second transparent substrate film 12A and the second alignment layer 12C.

[0025] The dimming layer 13 comprises a transparent resin layer 13P and a liquid crystal composition 13L. The dimming layer 13 includes spacers dispersed throughout the dimming layer 13. The dimming layer 13 is located between the first transparent electrode layer 11B and the second transparent electrode layer 12B. The dimming layer 13 is bonded to the first transparent electrode layer 11B and the second transparent electrode layer 12B via the respective alignment layers 11C and 12C.

[0026] The transparent resin layer 13P partitions the light-adjusting layer 13 into multiple voids. The liquid crystal composition 13L contains a liquid crystal compound and additives. The additive is selected from the group consisting of viscosity reducers, defoamers, antioxidants, weather-resistant agents, and dichroic dyes. The transparent resin layer 13P is a cured product of an ionization-curable compound. An example of an ionization-curable compound is at least one selected from the group consisting of acrylate compounds, methacrylate compounds, styrene compounds, thiol compounds, and oligomers of each compound. The liquid crystal composition 13L fills the voids partitioned in the transparent resin layer 13P. An example of a liquid crystal compound is at least one selected from the group consisting of Schiff bases, azos, azoxys, biphenyls, terphenyls, benzoic acid esters, trans, pyrimidines, cyclohexanecarboxylic acid esters, phenylcyclohexanes, and dioxanes.

[0027] The content of the transparent resin layer 13P relative to the total amount of the transparent resin layer 13P and the liquid crystal composition 13L is preferably 30% by mass or more and 70% by mass or less, from the viewpoint of easily achieving both transparency and opacity. The thickness of the light-adjusting layer 13 is preferably 5 μm or more and 50 μm or less, from the viewpoint of easily achieving both transparency and opacity under low power consumption. The type of holding the liquid crystal composition 13L in the light-adjusting layer 13 may be a polymer dispersion type, a polymer network type, or a capsule type. The polymer network type has a polymer network having a three-dimensional mesh structure, and the liquid crystal composition 13L is held in the voids of the polymer network. The capsule type holds the liquid crystal composition 13L in capsules within the polymer network.

[0028] [Power circuit 20] Returning to Figure 1, the dimming sheet 10 placed on the bathroom door is the first dimming sheet 10A. The dimming sheet 10 placed on the bathroom wall is the second dimming sheet 10B. The first dimming sheet 10A and the second dimming sheet 10B are each independently connected to the power supply circuit 20. The circuit connecting the first dimming sheet 10A to the power supply circuit 20 is the first supply circuit. The circuit connecting the second dimming sheet 10B to the power supply circuit 20 is the second supply circuit.

[0029] The power supply circuit 20 is connected to the operation unit 40. The operation unit 40 receives external operations and inputs operation signals to the power supply circuit 20. External operations include transparency operations that switch each dimming sheet 10A and 10B from opaque to transparent, and opacity operations that switch each dimming sheet 10A and 10B from transparent to opaque. The operation signals include a first drive signal that makes the first dimming sheet 10A opaque, and a first stop signal that makes the first dimming sheet 10A transparent. The operation signals include a second drive signal that makes the second dimming sheet 10B opaque, and a second stop signal that makes the second dimming sheet 10B transparent.

[0030] The power supply circuit 20 constitutes the dimming system. The power supply circuit 20 supplies a first voltage signal VA to the first dimming sheet 10A through a first supply circuit. The power supply circuit 20 supplies a second voltage signal VB to the second dimming sheet 10B through a second supply circuit. Each voltage signal VA and VB is a square wave AC voltage. The maximum instantaneous value of the square wave AC voltage is, for example, 20V or more and 50V or less. The maximum instantaneous values ​​of each voltage signal VA and VB may be equal to each other or may be different to each other.

[0031] The power supply circuit 20 includes a voltage conversion unit 21, a first signal generation unit 22A, a second signal generation unit 22B, and an interlock switch 30. The voltage conversion unit 21 generates a DC voltage HV from an AC voltage to generate the respective voltage signals VA and VB.

[0032] The first signal generation unit 22A receives a first drive signal and generates a first voltage signal VA from a DC voltage HV. The first signal generation unit 22A stops generating the first voltage signal VA when it receives a first stop signal. The second signal generation unit 22B receives a second drive signal and generates a second voltage signal VB from a DC voltage HV. The second signal generation unit 22B stops generating the second voltage signal VB when it receives a second stop signal.

[0033] The interlock switch 30 is connected in series between the first signal generation unit 22A and the first dimming sheet 10A. The interlock switch 30 constitutes the first supply circuit, but is not connected to the second supply circuit. The interlock switch 30 detects that the bathroom door is closed through interaction with the detected unit 52T. The interlock switch 30 detects that the bathroom door is open through interaction with the detected unit 52T. The open state of the bathroom door includes the motion state in which the bathroom door is beginning to open, the stationary state in which the bathroom door is open, and the motion state in which the bathroom door is beginning to close.

[0034] The interlock switch 30 closes the first supply circuit when the bathroom door is closed. The interlock switch 30 allows the supply of the first voltage signal VA to the first dimming sheet 10A when the bathroom door is closed. The interlock switch 30 opens the first supply circuit when the bathroom door is opened. The interlock switch 30 prevents the supply of the first voltage signal VA to the first dimming sheet 10A when the bathroom door is opened.

[0035] The first signal generation unit 22A may monitor the state of the interlock switch 30. That is, the first signal generation unit 22A may monitor the closing and opening of the first supply circuit. The first signal generation unit 22A may receive a first drive signal when the first supply circuit is closed and generate a first voltage signal VA therefrom. Alternatively, the first signal generation unit 22A may stop generating the first voltage signal VA when the first supply circuit is opened, provided that the opening of the first supply circuit is a sufficient condition.

[0036] [Function of the bathroom lighting system] Figures 3 to 5 show the state of the bathroom 50, respectively. Figure 3 shows the state where transparent operation is input to the control unit 40 and the bathroom door is closed. Figure 4 shows the state where opaque operation is input to the control unit 40 and the bathroom door is closed. Figure 5 shows the state where opaque operation is input to the control unit 40 and the bathroom door is open. Note that in Figures 3 to 5, the transparent dimming sheet 10 is shown with white outlines, while the opaque dimming sheet 10 is shown with dots.

[0037] As shown in Figure 3, the operation unit 40, upon receiving the transparency operation, inputs a stop signal to each of the signal generation units 22A and 22B. Each of the signal generation units 22A and 22B does not supply the respective voltage signals VA and VB to each of the dimming sheets 10A and 10B. Each of the dimming sheets 10A and 10B makes the bathroom door and bathroom wall transparent so that the bathroom space 50S can be seen from the outside. Even if the bathroom door is opened from this state, each of the signal generation units 22A and 22B continues to stop supplying the respective voltage signals VA and VB. Each of the dimming sheets 10A and 10B continues to make the bathroom door and bathroom wall transparent regardless of the opening of the first supply circuit by the interlock switch 30.

[0038] As shown in Figure 4, the operating unit 40 receives an opacity operation and inputs drive signals to the respective signal generation units 22A and 22B. The respective signal generation units 22A and 22B supply the respective voltage signals VA and VB to the respective dimming sheets 10A and 10B. At this time, since the bathroom door is closed, the interlock switch 30 closes the first supply circuit. The respective dimming sheets 10A and 10B then make the bathroom door and bathroom wall opaque so that the bathroom space 50S is not visible from the outside.

[0039] As shown in Figure 5, when the bathroom door is opened from the state of the bathroom 50 shown in Figure 4, the interlock switch 30 opens the first supply circuit. The signal generation units 22A and 22B continue to supply the respective voltage signals VA and VB, while the opening of the first supply circuit causes the interlock switch 30 to switch the first dimming sheet 10A from opaque to transparent, and also switches the bathroom door from opaque to transparent. Then, only the second dimming sheet 10B continues to keep the bathroom wall opaque. Note that if the first signal generation unit 22A is monitoring the closing and opening of the first supply circuit, the first signal generation unit 22A stops generating the first voltage signal VA itself when the first supply circuit is opened.

[0040] When the bathroom door is closed from the state of the bathroom 50 shown in Figure 5, the interlock switch 30 closes the first supply circuit. Upon closing the first supply circuit, the interlock switch 30 switches the first dimming sheet 10A back from transparent to opaque, and also switches the bathroom door back from transparent to opaque. If the first signal generation unit 22A is monitoring the closing and opening of the first supply circuit, the first signal generation unit 22A resumes generating the first voltage signal VA upon closing the first supply circuit.

[0041] According to the above embodiment, the following effects can be obtained. (1) When the bathroom 50 is in use with the bathroom door closed, privacy protection can be achieved by closing the first supply circuit with the interlock switch 30, which makes the dimming sheet 10 opaque.

[0042] (2) Before and after use of the bathroom 50 when the bathroom door is opened, the first supply circuit is opened by the interlock switch 30, making it difficult for the first voltage signal VA to be supplied to the first dimming sheet 10A which is exposed to hot water or steam. As a result, the bathroom door is given a transparency suitable for when the bathroom 50 is in use and when it is not, and the durability of the first dimming sheet 10A placed on the bathroom door is increased.

[0043] (3) The generation of the first voltage signal VA is stopped by opening the first supply circuit with the interlock switch 30. As a result, the durability of the first dimming sheet 10A installed on the bathroom door is increased, and the power consumption required to generate the first voltage signal VA is suppressed.

[0044] (4) Regardless of whether the first supply circuit is opened by the interlock switch 30, the second dimming sheet 10B switches from transparent to opaque based on the input of the operating unit 40. This makes it possible to independently achieve the following states: when the bathroom wall is transparent and the bathroom door is transparent, when the bathroom wall is opaque and the bathroom door is transparent, when the bathroom wall is transparent and the bathroom door is opaque, and when the bathroom wall is opaque and the bathroom door is opaque. This improves the convenience of bathroom dimming.

[0045] (5) When the first dimming sheet 10A is attached to the exterior surface of the transparent door panel 52 to constitute the exterior surface of the bathroom door, exposure of the first dimming sheet 10A to hot water or water vapor is also suppressed by the arrangement of the first dimming sheet 10A.

[0046] (6) When the first dimming sheet 10A is sealed between the indoor substrate 53A and the outdoor substrate 53B, exposure of the first dimming sheet 10A to hot water or water vapor is also suppressed by the configuration of the bathroom door.

[0047] The above embodiment can be implemented with the following modifications. [Dimming Sheet 10] The voltage signals VA and VB used to drive the dimming sheet 10 may be DC voltages. In this case, the voltage signals VA and VB may have equal voltage values ​​or different voltage values.

[0048] The bathroom walls may be made of opaque walls instead of transparent walls. In this case, the transparent wall panel 51 is opaque, and the bathroom dimming system may omit the second dimming sheet 10B and the second signal generation unit 22B.

[0049] The bathroom door may include a plurality of first dimming sheets 10A divided within the surface of the transparent door panel 52. In this case, the first signal generation unit 22A generates a first voltage signal VA for each dimming sheet 10A through a first supply circuit, one for each dimming sheet 10A. This allows the bathroom door to switch at least a portion of the transparent door panel 52 from transparent to opaque. The interlock switch 30 includes a plurality of switch elements connected in series between the power supply circuit 20 and each first dimming sheet 10A, and an element drive unit that closes all switch elements when the bathroom door is closed and opens all switch elements when the bathroom door is opened.

[0050] This configuration provides the effects described in (1) to (6) above, and also allows for a lower voltage to be applied to a single first dimming sheet 10A due to the smaller area of ​​each first dimming sheet 10A. The voltage applied to the first dimming sheet 10A promotes the penetration of moisture into the dimming layer 13. The configuration with multiple first dimming sheets 10A also enhances the durability of the first dimming sheets 10A by reducing the voltage.

[0051] [Power circuit 20] The power supply circuit 20 may begin monitoring the state of the interlock switch 30 upon receiving a drive signal from the operation unit 40. The power supply circuit 20 may also stop monitoring the state of the interlock switch 30 upon receiving a stop signal from the operation unit 40.

[0052] The voltage conversion unit 21 may monitor the state of the interlock switch 30 instead of the first signal generation unit 22A. That is, the voltage conversion unit 21 may monitor the closing and opening of the first supply circuit. The voltage conversion unit 21 may generate the DC voltage HV from the AC voltage when the first supply circuit is closed. The voltage conversion unit 21 may also stop generating the DC voltage HV when the first supply circuit is open, provided that the opening of the first supply circuit is a sufficient condition. [Explanation of Symbols]

[0053] VA…First voltage signal VB...Second voltage signal 10… Dimming sheet 10A…First dimming sheet 10B...Second dimming sheet 11, 12… Transparent electrode sheet 11A...First transparent substrate film 12A...Second transparent base film 11B...first transparent electrode layer 12B...Second transparent electrode layer 11C...First orientation layer 12C...Second orientation layer 13…Dimming layer 13P…Transparent resin layer 13L…Liquid crystal composition 20…Power circuit 21...Voltage conversion section 22A...First signal generation section 22B...Second signal generation section 30…Interlock switch 40...Operation unit 50...Bathroom 51…Wall transparent board 52... Door transparent panel 52T...Detected unit 53A…Indoor base material 53B…Outdoor base material

Claims

1. The bathroom door, which opens into the bathroom when opened, is equipped with a transparent panel, and a dimming sheet is placed on the exterior surface of the transparent panel and reversibly switches from transparent to opaque by the supply of a voltage signal. A power supply circuit that switches the supply and stop of the voltage signal based on the input of the control unit, A bathroom lighting system comprising: The power supply circuit and the dimming sheet are connected in series and include an interlock switch that closes the voltage signal supply circuit when the bathroom door is closed and opens the supply circuit when the bathroom door is opened. A bathroom lighting control system characterized by the following features.

2. The power supply circuit monitors the closing and opening of the supply circuit, and when it detects the opening by the interlock switch, it stops generating the voltage signal. Bathroom lighting control system according to claim 1.

3. The aforementioned transparent plate is a door transparent plate, The dimming sheet is a first dimming sheet, The aforementioned voltage signal is a first voltage signal, The supply circuit is a first supply circuit, The bathroom wall is further equipped with a transparent wall panel. The bathroom dimming system further comprises a second dimming sheet, which is positioned on the exterior surface of the transparent wall panel and reversibly switches from transparent to opaque by the supply of a second voltage signal. The power supply circuit switches the supply and desupply of the second voltage signal based on the input of the operation unit, via a second supply circuit that connects the second dimming sheet to the power supply circuit without using the interlock switch. Bathroom lighting control system according to claim 1.

4. The transparent panel provided in the bathroom door is one, The light-adjusting sheet is attached to the exterior surface of the transparent plate to form the exterior surface of the bathroom door. A bathroom lighting system according to any one of claims 1 to 3.

5. The transparent plate is an indoor substrate, The bathroom door further comprises an exterior substrate that is positioned on the exterior side relative to the interior substrate, The dimming sheet is sealed between the indoor substrate and the outdoor substrate. A bathroom lighting system according to any one of claims 1 to 3.

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