Illumination system and control method for a vehicle using a fluid

Abstract

The present disclosure relates to a lighting system using a fluid for a vehicle, and a control method thereof, the lighting system including a first flow path configured in an interior portion of the vehicle and receiving a fluid stored in the vehicle and guiding a flow of the fluid, a lighting portion arranged in the interior of the vehicle to radiate light toward the first flow path, and a controller for receiving state information of the vehicle and providing the state information of the vehicle to a passenger by controlling the flow of the fluid flowing through the first flow path or the lighting portion according to the state information.

Description

Technical Field

[0001] This disclosure relates to a system and method for using fluid stored in a vehicle for interior lighting. Background Technology

[0002] The excessive use of fossil fuels emits large amounts of greenhouse gases, and extreme weather events are occurring more frequently worldwide as the global average temperature rises. To prevent the global average temperature from rising, many countries have joined the Kyoto Protocol and the Paris Convention, and technologies to replace fossil fuels with renewable energy sources such as wind, solar, waste, and hydrogen are constantly being developed.

[0003] Among them, hydrogen energy, compared with fossil fuels, produces fewer greenhouse gases such as CO2 and NO. x SO x It produces fewer pollutants and is more energy efficient than fossil fuels, making it a highly sought-after renewable energy source.

[0004] Hydrogen fuel cells are devices that convert the chemical energy generated by the electrochemical reaction between oxygen (O2) and hydrogen (H2) into electrical energy to generate electricity, and produce water (H2O) as a byproduct, making them an environmentally friendly energy source.

[0005] Typically, water produced by fuel cells is discharged to the outside through an exhaust system, and methods for producing water using fuel cells have been proposed.

[0006] The above description of the background art is intended only to help understand the background of this disclosure, and is not intended to imply that this disclosure falls within the scope of related fields known to those skilled in the art. Summary of the Invention

[0007] This disclosure is made to address the aforementioned problems, and the purpose of this disclosure is to maximize the environmentally friendly image traditionally maintained by hydrogen vehicles by using water generated from fuel cells that are typically emitted inside fuel cell vehicles, and to provide aesthetic appeal by using the generated water and interior lighting to guide the vehicle status to passengers.

[0008] A lighting system for a vehicle using fluid, according to one aspect of the present disclosure, for achieving this purpose, includes: a first flow path configured in an interior portion of the vehicle and receiving and guiding the flow of fluid stored in the vehicle; an illumination portion arranged inside the vehicle to radiate light toward the first flow path; and a controller for receiving vehicle status information and, based on the status information, providing the vehicle status information to passengers by controlling the flow of fluid through the first flow path or the illumination portion.

[0009] The fluid stored in the vehicle can be water produced by the fuel cell.

[0010] The first flow path may provide a scattering device that flows in the interior space, and the scattering device may scatter light radiated from the lighting section according to the flow.

[0011] The scattering device can be a panel mounted inside a first flow path via a rotating shaft, and the panel can be rotated relative to the rotating shaft by the fluid flowing inside the first flow path and scatter the light radiated from the illumination part.

[0012] The lighting section can be installed parallel to the first flow path and consists of a light source for radiating light and a diffusion section that diffuses the light radiated from the light source into the first flow path.

[0013] The lighting system using fluid may further include: a main chamber for storing produced water generated by the fuel cell; a second flow path for guiding the flow of produced water discharged from the main chamber; and a humidification section for receiving the produced water from the second flow path to humidify the inlet air of the fuel cell.

[0014] The first flow path can receive the generated water from the fuel cell from the main tank.

[0015] The lighting system using fluid may further include a valve for distributing generated water discharged from the main tank to a first flow path or a second flow path.

[0016] The valve can be a three-way valve that can preferentially supply generated water from the main tank discharge to the first flow path, and supply generated water to the second flow path if humidification of the fuel cell inlet air is required.

[0017] The valve can be a three-way valve that can preferentially supply generated water discharged from the main tank to the second flow path, and supply generated water to the first flow path if a predetermined amount of generated water is stored in the main tank or if humidification of the inlet air of the fuel cell is not required.

[0018] A control method for a fluid-based lighting system according to another aspect of this disclosure includes: delivering fluid stored in a vehicle to a first flow path installed in an interior portion of the vehicle; radiating light onto the first flow path using an illumination portion arranged inside the vehicle; and receiving vehicle status information by a controller, and, based on the status information, guiding the vehicle status to passengers by controlling the flow of fluid through the first flow path or the illumination portion.

[0019] When delivering fluid stored in the vehicle to the first flow path, the fluid can be water produced by the fuel cell.

[0020] Vehicle status guidance can visually guide passengers about the vehicle's status by adjusting the flow rate of the discharged fluid or changing the brightness or color of the light radiated by the lighting components.

[0021] The delivery of fluid to the first flow path allows the generated water produced by the fuel cell to be stored in the main tank, and when the generated water is stored above a predetermined level in the main tank, the generated water is discharged into the first flow path.

[0022] The method may further include: humidifying the inlet air of the fuel cell by a humidification section that receives generated water discharged from the main chamber through a second flow path, the humidification section humidifying the inlet air of the fuel cell.

[0023] The generated water can be stored in the main tank and preferentially discharged to the first flow path. If the generated water above the predetermined water level is stored in the main tank or if the inlet air of the fuel cell needs to be humidified, the generated water can be transported to the humidification section through the second flow path.

[0024] Alternatively, the generated water can be stored in the main tank and preferentially discharged to the humidification section, and if the generated water at a predetermined level is stored in the main tank or if humidification of the inlet air of the fuel cell is not required, the generated water can be delivered to the first flow path.

[0025] According to the lighting system and control method using fuel cell-generated water disclosed herein, the water generated by the fuel cell in the vehicle can be used to maximize the environmental image of the hydrogen vehicle, and to provide luxury and aesthetics by guiding the vehicle state through a scattering device along the fluid flow, the flow rate towards the vehicle passengers, and the lighting. Attached Figure Description

[0026] The above and other objects, features and advantages of this disclosure will become clearer from the following detailed description, taken in conjunction with the accompanying drawings, wherein:

[0027] Figure 1 This is a diagram illustrating a sensor, controller, first flow path, and lighting section of a fluid-using lighting system according to an exemplary embodiment of the present disclosure.

[0028] Figure 2 and Figure 3 This is a circuit diagram of a lighting system using fluid according to an exemplary embodiment of the present disclosure.

[0029] Figure 4 and Figure 5 This is a circuit diagram of a fluid-based lighting system according to an exemplary embodiment of the present disclosure, the lighting system further including a sub-box.

[0030] Figure 6This is a diagram illustrating an example of the use of a lighting system according to an exemplary embodiment of the present disclosure.

[0031] Figure 7 This is a flowchart illustrating a lighting priority mode in a control method for a lighting system using fluid according to an exemplary embodiment of the present disclosure.

[0032] Figure 8 This is a flowchart illustrating a humidification priority mode in a control method for a lighting system using fluid according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0033] The specific structural and functional descriptions of exemplary embodiments of this disclosure disclosed in this specification or application are shown for the purpose of describing embodiments according to this disclosure only, and exemplary embodiments of this disclosure may be embodied in various forms and should not be construed as limiting this disclosure to the exemplary embodiments described in this specification or application.

[0034] Because various modifications and forms can be made to the embodiments according to this disclosure, specific exemplary embodiments will be shown in the accompanying drawings and described in detail in this specification or application. However, this is not intended to limit the exemplary embodiments according to the concepts of this disclosure to the specific forms disclosed, and it should be understood that this disclosure includes all modifications, equivalents, and substitutions included within the spirit and scope of this disclosure.

[0035] Terms such as “first” and / or “second” may be used to describe various components, but these components should not be limited by these terms. The term is used only for the purpose of distinguishing one component from another, and, for example, without departing from the concepts according to this disclosure, a first component may be named a second component, and similarly, a second component may be named a first component.

[0036] When a component is referred to as "connected" or "coupled" to another component, the component may be directly connected or coupled to the other component; however, it should be understood that other components may also exist between the components. On the other hand, when a component is referred to as "directly connected" or "directly coupled" to another component, it should be understood that there are no other components between the components. Expressions describing relationships between components should be interpreted in the same way, i.e., "between" and "directly between," or "adjacent to" and "directly adjacent to."

[0037] The terminology used in this specification is for describing specific exemplary embodiments only and is not intended to limit this disclosure. Singular forms may include plural forms unless the context clearly indicates otherwise. In this specification, it will be understood that the terms "comprising," "having," etc., specify the presence of the described features, integers, steps, operations, components, parts, or combinations thereof, and do not preclude the possibility of the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0038] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. Terms defined in common dictionaries may be interpreted as having a meaning consistent with their meaning in the context of this art, and should not be construed as having an ideal or overly formal meaning unless expressly defined in this application.

[0039] The present disclosure will now be described in detail with reference to the accompanying drawings, which illustrate preferred exemplary embodiments of the present disclosure. The same reference numerals in each drawing denote the same components.

[0040] Figure 1 This is a diagram illustrating a sensor, controller, first flow path, and lighting section of a fluid-using lighting system according to an exemplary embodiment of the present disclosure.

[0041] Figure 2 and Figure 3 This is a circuit diagram of a lighting system using fluid according to an exemplary embodiment of the present disclosure.

[0042] Figure 4 and Figure 5 This is a circuit diagram of a fluid-based lighting system according to an exemplary embodiment of the present disclosure, the lighting system further including a sub-box.

[0043] Figure 6 This is a diagram illustrating an example of the use of a lighting system according to an exemplary embodiment of the present disclosure.

[0044] Figure 7 This is a flowchart illustrating a lighting priority mode in a control method for a lighting system using fluid according to an exemplary embodiment of the present disclosure.

[0045] Figure 8 This is a flowchart illustrating a humidification priority mode in a control method for a lighting system using fluid according to an exemplary embodiment of the present disclosure.

[0046] Figure 1 This is a diagram illustrating a sensor, controller, first flow path, and lighting section of a fluid-using lighting system according to an exemplary embodiment of the present disclosure. (Refer to...) Figure 1The fluid-based lighting system according to this disclosure includes: a first flow path 100, installed in the interior of a vehicle, and receiving and guiding the flow of fluid stored in the vehicle; a lighting section 120, installed in the vehicle to radiate light toward the first flow path 100; and a controller C for receiving vehicle status information and, based on the status information, controlling the flow of fluid through the first flow path 100 or the lighting section 120 to provide information about the vehicle's status to passengers.

[0047] Specifically, the fluid stored in the vehicle is squeezed and discharged by an electric water pump (EWP) controlled by controller C, and the flow rate of the fluid discharged into the first flow path 100 is adjusted according to the vehicle status information received by controller C.

[0048] The first flow path 100 is provided with a scattering device 110 that flows in the interior space, and the scattering device 110 can scatter light radiated from the lighting section 120 according to the flow.

[0049] The scattering device 110 is a panel mounted inside the first flow path 100 via a rotating shaft, and the panel can be rotated relative to the rotating shaft by the generated water flowing into the first flow path 100 to scatter the light radiated from the lighting section 120.

[0050] Therefore, the scattering device 110 can rotate to different degrees depending on the flow rate of the generated water. When the flow rate of the generated water is slower than the desired rate, the scattering device 110 moves and rotates in a state that does not change much from the initial state, and when the flow rate of the generated water is faster than the desired rate, the scattering device 110 will move and rotate rapidly due to the flow of the generated water. Furthermore, since the scattering device 110 displays different movements according to the flow rate of the generated water, various light scattering states can be generated, thereby diversifying the expressible visual effects and intuitively guiding the vehicle's status information to the passengers.

[0051] The lighting section 120 is mounted parallel to the first flow path 100 and consists of a light source 121 for radiating light and a diffuser section 122, wherein the diffuser section 122 can diffuse the light radiated from the light source 121 into the first flow path 100.

[0052] Specifically, the light source 121 of the lighting section 120 can radiate light directly into the first flow path 100, but the light source 121 can preferentially radiate light into the diffusion section 122, and the light reflected by the diffusion section 122 can radiate into the first flow path 100. Therefore, light is reflected from the diffusion section 122 and radiated towards the first flow path 100, thereby obtaining a more colorful lighting effect than if the light were directly radiated into the first flow path 100.

[0053] Figure 2 and Figure 3 This is a circuit diagram of a fluid-based lighting system according to an exemplary embodiment of this disclosure. (Refer to...) Figure 2 and Figure 3 This disclosure is described.

[0054] The fluid stored in the vehicle can be water produced by the fuel cell. That is, the fluid can be water produced as a byproduct of generating electricity during the power generation process of the hydrogen fuel cell.

[0055] The lighting system using fluid may further include: a main tank 400 for storing produced water generated by the fuel cell; a second flow path 200 for guiding the flow of produced water discharged from the main tank; and a humidification section 300 for humidifying the inlet air of the fuel cell by receiving the produced water from the second flow path 200.

[0056] Reference Figure 2 and Figure 3 The humidification unit 300 may be located in a space such as the engine compartment of a vehicle, i.e., in the fuel cell, main compartment, or lower space, and the first flow path 100 is mounted on the interior portion of the vehicle. Similar to the first flow path 100, the lighting unit 120 is mounted parallel to the first flow path 100 on the interior portion of the vehicle.

[0057] Specifically, the main tank 400 is a space for storing the generated water discharged to the first flow path 100 and the second flow path, and the generated water discharged to the first flow path 100 and the second flow path is squeezed and discharged by the EWP.

[0058] Since the air supplied to the fuel cell should contain sufficient humidity for the fuel cell to generate energy stably, a humidification device is required, and in order to humidify the inlet air, the fluid-based lighting system may further include a humidification section 300 and a second flow path 200 connecting the humidification section 300 to the main chamber.

[0059] The first flow path 100 can receive the generated water from the fuel cell from the main tank.

[0060] The lighting system using fluid may further include a valve for distributing the generated water discharged from the main tank to a first flow path 100 or a second flow path 200.

[0061] Specifically, the valve can be an on / off valve 600 or a three-way valve 700. The on / off valve is used in a method that does not prioritize the production water discharged into the first flow path 100 and the second flow path 200. For example... Figure 2As shown, if the on / off valve is located between the main tank and the pipelines distributing to the first and second flow paths, then when the valve is open, the generated water is discharged into both the first flow path 100 and the second flow path 200. Using the on / off valve can save system costs.

[0062] In addition, the valve can be a three-way valve that can preferentially supply the generated water discharged from the main tank to the first flow path, and supply the generated water to the second flow path if humidification of the inlet air of the fuel cell is required.

[0063] Alternatively, the valve may preferentially supply generated water discharged from the main tank to the second flow path, and supply generated water to the first flow path if a predetermined amount of generated water is stored in the main tank or if humidification of the fuel cell inlet air is not required.

[0064] Therefore, a three-way valve can supply water to only one flow path or to both flow paths. When using a three-way valve, a lighting-priority mode or a humidification-priority mode can be selected, and additionally, water can be supplied to both flow paths simultaneously, thus allowing both modes to be enabled concurrently.

[0065] Lighting systems that use fluids may include a secondary tank 500 capable of storing the generated water discharged into a first flow path separately from the main tank.

[0066] Figure 4 and Figure 5 This is a circuit diagram of a fluid-based lighting system according to an exemplary embodiment of the present disclosure, the lighting system further including a sub-box.

[0067] Reference Figure 4 and Figure 5 The auxiliary tank 500 can be further added to the lighting system that uses fluid to store the generated water received from the main tank 400 and discharge the generated water into the first flow path. Therefore, the first flow path 100 can be controlled independently regardless of the amount of water stored in the main tank 400 and the humidification section 300.

[0068] Figure 6 This is a diagram illustrating an example of the use of a lighting system according to an exemplary embodiment of this disclosure. (Refer to...) Figure 6 The example describing the use of a lighting system shows that the first flow path is primarily installed on the dashboard, window frames, or upper part of the vehicle to guide vehicle information. However, the first flow path can be installed anywhere that is where the user can easily obtain information about the vehicle's interior status. Figure 6An exemplary implementation is shown, wherein a first flow path is located at the lower part of the vehicle to guide vehicle status information to the driver. Even though the lower part of the vehicle is a part that is difficult for the driver to notice, it is preferable to provide simple or intuitive information at the lower part of the vehicle so that the driver can obtain the vehicle status information simply by looking out from the corner of his / her eye. For example, when the current battery capacity of the vehicle's hydrogen fuel cell is above 70%, only the last of the three battery bars flashes; when its current battery capacity is 30% or above, only the last of the two battery bars flashes; and when its current battery capacity is less than 30%, one battery bar flashes, thereby guiding information about the battery status.

[0069] Figure 7 This is a flowchart illustrating a lighting priority mode of a control method for a fluid-based lighting system according to an exemplary embodiment of the present disclosure, and Figure 8 This is a flowchart illustrating a humidification-priority mode of a control method for a lighting system using fluid according to an exemplary embodiment of the present disclosure. (Refer to...) Figure 7 and Figure 8 This disclosure describes a control method for achieving this purpose using a fluid-based lighting system.

[0070] A control method for a lighting system using fluid includes: delivering fluid stored in the vehicle (which, as an exemplary embodiment, may be water produced by a fuel cell) to a first flow path installed in a portion of the vehicle interior (S300); radiating light onto the first flow path using a lighting component installed in the vehicle interior; and receiving vehicle status information by a controller and guiding the vehicle's status to passengers by controlling the flow of fluid through the first flow path or the lighting component based on the status information (S400).

[0071] Specifically, the fluid stored in the vehicle can be water, which is a byproduct of the fuel cell's power generation process, and based on the above, refer to Figure 7 and Figure 8 After generating water from the fuel cell by operating the vehicle (S100), the generated water is discharged into the first flow path (S300), and the vehicle state is guided according to the information transmitted by the controller (S400).

[0072] More specifically, the controller receives information about the vehicle's current state from sensor S and, based on the received information, directs that information to the passengers. More specifically, the controller can visually guide the passengers about the vehicle's state by adjusting the flow rate of the generated water discharged into the first flow path or by changing the brightness or color of the light radiated by the lighting components.

[0073] For example, when the air in the vehicle is currently very hot, cold air is rapidly discharged from the air conditioning system. The controller increases the speed and flow rate of the water generated in the first flow path, and the color of the light radiated by the lighting section can use a blue series to convey the vehicle's intuitive air conditioning status to the user.

[0074] In addition, if the driver exceeds the speed limit in the speed limit zone, the controller will control the lighting to repeatedly turn the red lights on and off to warn the driver.

[0075] In addition to the information mentioned above, it can also intuitively display the vehicle's current battery status, driving mode, etc.

[0076] Furthermore, after storing the generated water produced by the fuel cell in the main tank (S200) and measuring the water level of the generated water by a sensor measuring the water level inside the main tank (S700), if the generated water is stored above a predetermined level, the delivery of the generated water to the first flow path (S300) can be performed to discharge the generated water into the first flow path.

[0077] The control method may further include: humidifying the inlet air of the fuel cell by a humidification section that receives generated water discharged from the main chamber through a second flow path, the humidification section humidifying the inlet air of the fuel cell (S600).

[0078] Specifically, when it is identified that humidification is required for the inlet air supplied to the fuel cell from the sensor that performs the measurement of humidification of the inlet air supplied to the fuel cell (S500), the control method may further include using the generated water stored in the main chamber to humidify the dry inlet air by the humidification section (S600).

[0079] Reference Figure 7 The description of the lighting priority mode includes, in some cases, the generated water is stored in the main tank and preferentially discharged to the first flow path, and if generated water above a predetermined level is stored in the main tank or if humidification of the inlet air of the fuel cell is required, the control method may include delivering the generated water to the humidification section via a second flow path.

[0080] Fuel cells generate electricity and water through the combination of oxygen and hydrogen in the air. A separator inside the fuel cell maintains a constant humidity level, contributing to its efficiency and durability. Therefore, fuel cells use air that has already been humidified by a humidifier to generate electricity. For this purpose, a humidity sensor is installed inside the fuel cell or at the air inlet to control the humidity of the supplied air.

[0081] Specifically, a three-way valve can be provided in the flow path, allowing the generated water to be selectively discharged into either the first or second flow path. The situation where the generated water is preferentially discharged into the first flow path occurs when the humidity of the inlet air introduced into the fuel cell is sufficient, thus eliminating the need for separate humidification. In this case, the generated water can be used to guide vehicle status information. If a predetermined level of generated water is stored in the main tank or if it is detected that humidification of the inlet air is required, the generated water can be delivered to the humidification section via the second flow path.

[0082] Unlike the above, refer to Figure 8 The description of the humidification priority mode indicates that the generated water can be stored in the main tank and preferentially discharged to the humidification section, and if the generated water at a predetermined level is stored in the main tank or if humidification of the inlet air of the fuel cell is not required, the generated water can be discharged to the first flow path.

[0083] Specifically, a three-way valve can be installed in the flow path, allowing the generated water to be selectively discharged into either the first or second flow path. The generated water will be preferentially discharged into the second flow path when the humidity of the inlet air introduced into the fuel cell is insufficient and humidification is required. In this case, the generated water can be used to humidify the inlet air introduced into the fuel cell. Subsequently, when the humidity of the inlet air is sufficient or the water level in the main tank is above a predetermined level, the generated water can be discharged into the first flow path.

[0084] When the fuel cell produces enough water, the produced water can be discharged into all the first and second flow paths to perform all operations that guide vehicle information and humidify the inlet air.

[0085] Although specific exemplary embodiments of the present disclosure have been shown and described, it will be apparent to those skilled in the art that various modifications and changes may be made to the disclosure without departing from the technical spirit of the disclosure as set forth in the appended claims.

Claims

1. A lighting system using a fluid for a vehicle, the lighting system comprising: a first flow path configured in an interior portion of the vehicle, the first flow path configured to receive a fluid stored in the vehicle and to guide a flow of the fluid; a lighting portion arranged in an interior of the vehicle, having a configuration to radiate light toward the first flow path; and a controller to receive state information of the vehicle and to provide the state information of the vehicle to an occupant by controlling the flow of the fluid flowing through the first flow path or the lighting portion according to the state information; wherein the fluid stored in the vehicle is water generated by a fuel cell. the first flow path has a scattering device configured to flow in an internal space of the first flow path, and 2. The lighting system of claim 1, wherein, wherein the scattering device is configured to scatter light radiated from the lighting portion according to a flow motion of the scattering device. the scattering device has a panel shape, and the scattering device is rotatably arranged inside the first flow path with respect to a rotation axis, and 3. The lighting system of claim 2, wherein, wherein the scattering device is configured to rotate with respect to the rotation axis by the fluid flowing inside the first flow path, and to scatter light radiated from the lighting portion. the lighting portion is arranged in parallel with the first flow path, and the lighting portion includes:

4. The lighting system of claim 1, wherein, a light source to radiate light; and a diffusion portion to diffuse light radiated from the light source toward the first flow path.

5. The lighting system according to claim 1, further comprising: a main tank to store the water generated by the fuel cell; a second flow path configured to guide a flow of the water generated by the fuel cell and subsequently discharged from the main tank; and a humidification portion to receive the water from the second flow path, and the humidification portion is configured to humidify inlet air of the fuel cell. the first flow path receives the water generated by the fuel cell from the main tank.

6. The lighting system of claim 5, wherein, 7. The lighting system according to claim 5, further comprising a valve configured to be selectively opened and closed to distribute the water discharged from the main tank to the first flow path or the second flow path. when the valve is a three-way valve, the valve is controlled to be selectively opened and closed to supply the water discharged from the main tank to the first flow path, and then to the second flow path when humidification of the inlet air of the fuel cell is required.

8. The lighting system of claim 7, wherein, 9. The lighting system according to claim 7, when the valve is a three-way valve, the valve is controlled to be selectively opened and closed to supply the water discharged from the main tank to the second flow path, and then to the first flow path when a predetermined amount or more of the water is stored in the main tank or humidification of the inlet air of the fuel cell is not required. wherein, ​ 10.A control method of a lighting system using a fluid for a vehicle, the control method comprising: delivering a fluid stored in the vehicle to a first flow path configured in an interior portion of the vehicle; radiating light to the first flow path using a lighting portion arranged in the interior of the vehicle; receiving, by a controller, state information of the vehicle; and providing the state information of the vehicle to an occupant by controlling a flow of the fluid flowing through the first flow path or the lighting portion according to the state information. wherein the fluid stored in the vehicle and delivered to the first flow path is water generated by a fuel cell. providing the state information of the vehicle includes providing the state information to the occupant visually by the controller by adjusting a flow rate of the fluid discharged or changing a brightness or a color of light radiated by the lighting portion.

11. The control method according to claim 10, wherein delivering the fluid to the first flow path includes storing the water generated by the fuel cell in a main tank of the lighting system, and in a case where the water is stored above a predetermined water level in the main tank, discharging the water to the first flow path.

12. The control method according to claim 10, wherein 13.The control method of claim 10, further comprising humidifying inlet air of the fuel cell by a humidifying portion receiving the water discharged from the main tank through a second flow path. discharging the water to the first flow path, and then delivering the water to the humidifying portion through the second flow path in a case where the water is stored above a predetermined water level in the main tank or humidification of the inlet air of the fuel cell is required.

14. The control method according to claim 13, storing the water generated by the fuel cell includes: storing the water generated by the fuel cell includes discharging the water to the humidifying portion, and then discharging to the first flow path in a case where the water is present in the main tank at a predetermined water level or humidification of the inlet air of the fuel cell is not required.

15. The control method according to claim 13, wherein ​

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