Tide signal light and method for driving the same

Abstract

The present invention relates to a tide signal light and a method for driving the same. The tide signal light according to an embodiment of the present invention may include a signal light that is installed on the seashore to prevent accidents caused by tides, and a control unit that controls the operating state of the signal light to indicate the change from high tide to low tide and from low tide to high tide based on data that indicates the tides.

Description

[Technical field]

[0001] The present invention relates to a tide signal light and a method for driving the same, and more specifically, to a tide signal light and a method for driving the same that allow people traveling to the seaside to see at a glance the dangerous conditions at high tides when they go clamming. [Background technology]

[0002] Regarding the current situation of clam digging accidents, a press release from the Coast Guard dated November 2, 2020 revealed that there were a total of 178 tidal flat accidents from 2017 to October 2020, of which 21 were fatal.

[0003] In particular, there have been a series of safety accidents while clamming, such as when a family of eight was caught by rising tides while collecting shellfish on a tidal flat on the western coast in June 2020 and had to be rescued by the Coast Guard. Clamming here refers to the act of collecting seafood from the tidal flats at low tide, a traditional fishing method that mainly involves lighting a torch (e.g., a lantern) at night and catching the fish that rush towards the light.

[0004] For this reason, in order to prevent people who come to the seaside to gather clams from drowning due to tides not knowing the exact tide times, a safety signal system is needed that will allow people to know dangerous situations at a glance. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Korean Patent Registration No. 10-1427866 (2014.08.01) [Patent Document 2] Korean Patent Registration No. 10-1566762 (2015.11.02) [Patent Document 3] Korean Patent Registration No. 10-1646162 (2016.08.01) Summary of the Invention [Problem to be solved by the invention]

[0006] An object of the embodiment of the present invention is to provide a tide signal light and a method for driving the signal light that allow people traveling to the seaside to know at a glance the dangerous situation at tide when they go clamming. [Means for solving the problem]

[0007] A tide signal light according to an embodiment of the present invention includes a signal light that is installed on the seashore to prevent accidents caused by tides, and a control unit that controls the operating state of the signal light to indicate the change from high tide to low tide and from low tide to high tide based on data indicating the tides.

[0008] The signal light includes a directional light between a red light and a blue light, and the control unit can control the directional light to display the change state from high tide to low tide and from low tide to high tide on the signal light.

[0009] The control unit can display the direction of the directional light from the red light to the blue light when displaying the situation from high tide to low tide on the signal light, and can display the direction of the directional light from the blue light to the red light when displaying the situation from low tide to high tide on the signal light.

[0010] The signal light may further include a convex lens portion for adjusting a viewing angle so that a user can clearly view the signal light from multiple angles.

[0011] The signal light may further include a sunshade for improving visibility in sunlight.

[0012] The control unit can control the operation state of the signal light in cooperation with a control device that provides control data as an analysis result of the ocean data that reveals the tides.

[0013] In addition, a method for operating a tide signal light according to an embodiment of the present invention includes a step of displaying the changing states of tide from high tide to low tide and from low tide to high tide by a signal light installed on the seashore to prevent accidents caused by tides, and a step of a control unit controlling the operating state of the signal light based on data indicating the tides so as to display the changing states of tide from high tide to low tide and from low tide to high tide, respectively.

[0014] The signal light includes a directional light between a red light and a blue light, and the controlling step can control the directional light to display the change state from high tide to low tide and from low tide to high tide on the signal light.

[0015] The controlling step can include, when displaying the situation from high tide to low tide on the signal light, displaying the direction of the directional light from the red light to the blue light, and, when displaying the situation from low tide to high tide on the signal light, displaying the direction of the directional light from the blue light to the red light.

[0016] The signal light may further include a convex lens portion for adjusting a viewing angle so that a user can clearly view the signal light from multiple angles.

[0017] The signal light may further include a sunshade for improving visibility in sunlight.

[0018] The step of controlling can control the operation state of the signal light in cooperation with a control device that provides control data as an analysis result of the ocean data containing the tides. Effect of the Invention

[0019] According to the embodiment of the present invention, when people who come to the beach to go clamming, the tide times can be displayed at a glance using signal lights, thereby preventing safety accidents during clamming and ensuring public safety. [Brief description of the drawings]

[0020] [Figure 1]FIG. 1 is a diagram showing a tide light system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram for explaining the tide signal light of FIG. 1. [Diagram 3] FIG. 2 is a diagram for explaining the tide signal light of FIG. 1. [Figure 4a] FIG. 2 is a diagram for explaining the operation of the control device of FIG. [Figure 4b] FIG. 2 is a diagram for explaining the operation of the control device of FIG. [Diagram 5] FIG. 2 is a block diagram showing a detailed structure of the tide signal light of FIG. 1. [Figure 6] 4 is a flow chart illustrating a method of operating a tide light according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0022] FIG. 1 is a diagram showing a tide light system according to an embodiment of the present invention, FIG. 2 and FIG. 3 are diagrams for explaining the tide light of FIG. 1, and FIG. 4a and FIG. 4b are diagrams for explaining the operation of the control device of FIG. 1.

[0023] As shown in FIG. 1, a tide light system 90 according to an embodiment of the present invention includes some or all of a tide light 100, a communication network 110, a control device 120, and a third party device 130.

[0024] Here, "including some or all" means that the tide light system 90 may be configured by omitting some of the components such as the third-party device 130, or that some or all of the components constituting the control device 120 may be integrated into a network device (e.g., a wireless switching device) that constitutes the communication network 110, and it is described as including everything to facilitate a full understanding of the invention.

[0025] The tide signal light 100 can be installed in various places such as a white sandy beach so that people who come to the beach can accurately know the tide time when they go clamming. Of course, the tide signal light 100 is preferably installed and operated on a beach where high tide and low tide occur due to the tides, such as the tidal flats of the West Sea, but the embodiment of the present invention is not particularly limited to such a situation. In other words, marine accidents occur not only on tidal flats but also on ships passing under bridges, so the light can be used in many cases.

[0026] The tide signal light 100 may be configured in various shapes. Usually, a bar-shaped mounting base may be configured to be installed on the sandy beach at the seaside, and a red light, a yellow light, and a blue light may be configured sequentially or in sequence at the tip of the mounting base. As shown in FIG. 2, the yellow light is configured between the red light and the blue light, which is not very different from conventional traffic signals. However, in the embodiment of the present invention, it may be easy to configure the signal lights with the same colors for users who are familiar with the traffic signal system. This is because users can easily understand and recognize them.

[0027] Above all, in the embodiment of the present invention, since it is necessary to inform people of the current state of the tide changing (or transition) from high tide to low tide and from low tide to high tide, it is preferable that the yellow light is configured in the form of a directional light. This is clearly shown in FIG. 3. In other words, in the embodiment of the present invention, the red light is used to inform people of a dangerous state. Therefore, as shown in FIG. 3, the tide signal light 100 informs people of whether the current state is changing from high tide to low tide or from low tide to high tide. FIG. 3(a) shows the state of the tide changing from high tide to low tide, and FIG. 3(b) shows the state of the tide changing from low tide to high tide. Of course, only the red light can be turned on at high tide, and only the blue light can be turned on at low tide.

[0028] Furthermore, the tide signal light 100 according to the embodiment of the present invention can indicate the tide time in various ways. For example, a CCTV, a night watch light, an announcement facility, an emergency alarm, etc. can be further configured to perform a multi-purpose safety function in cooperation with the tide signal light 100. Of course, these devices can be peripheral devices of the tide signal light 100, but since these devices can be included in the category of the tide signal light 100 according to the embodiment of the present invention, no special distinction is made in the embodiment of the present invention. This is because the relevant devices can be configured as an integral part of the tide signal light 100.

[0029] For example, a tourist who comes to a beach may not know the purpose of the tide signal light 100 at first, so an explanation board may be attached to the tide signal light 100. This will inform the purpose of the installation. Of course, when the tide signal light 100 is installed and operated, its purpose will be easily understood if public relations are conducted through the maritime police, the media, local governments, etc. In addition, the tide signal light 100 may be configured in the form of a convex lens (or lens part) so that people can see it from various angles, and a sunshade may be installed so that it can be seen while clamming on the beach. Of course, the convex lens is intended to improve the viewing angle, while the sunshade is intended to improve visibility due to sunlight. For example, in the case of a sunshade, it is possible to configure the sunshade in a way that it moves according to the direction of the sun, rather than being fixed and protruding from the display part (e.g., LED display part) of the tide signal light 100. Of course, the display part of the signal light is fixed, but the sunshade part surrounding the display part can be controlled in various shapes. The direction of the sun can be detected using an illuminance sensor, and the sunshade can be controlled in various shapes to improve visibility.

[0030] For example, as shown in FIG. 2, assuming that the sunshade is configured on the upper side, left and right sides, the sunshade is controlled to protrude only in one direction. If the sun is located in the south, the sunshade on the south side of the display unit can protrude. If the sun is located in the west, the sunshade on the west side protrudes and the sunshade on the south side can be folded down. Of course, if the sunshade straddles the south and west sides, it is possible to protrude all of the sunshade in the corresponding part as many times as necessary. The sunshade can be configured in various shapes, and is not particularly limited to any shape in the embodiment of the present invention. For example, the sunshade can be embodied in any number of ways by connecting the sunshade to the drive shaft of a motor (e.g., a linear motor) and then controlling the motor with a control device such as a CPU.

[0031] Referring to Fig. 3, the tide signal light 100 can indicate the degree of danger by flashing at different flashing intervals. For example, when the signal starts to change, the yellow light flashes every 2 seconds. Also, when the tide comes in and it becomes dangerous, the yellow light may flash every 0.5 seconds with the red light coming in. For example, if an electronic sign is installed next to the signal light, the electronic sign can be used to provide additional explanations, and even in this case, the signal light can be configured to be viewed from various angles.

[0032] The tide light 100 may be configured with a separate control device for controlling the operation of the red light, the yellow light, and the blue light. The control device may be configured on a printed circuit board (PCB) and may include a processor such as a CPU or an MPU, as well as a communication module for communicating with an external device such as the control device 120 of FIG. 1. This allows the control device to control the operation state of the tide light 100 by remote control of the external device. Of course, the tides are constant when viewed in terms of year or date, but there may be differences in time, and the accuracy of predicting the tides may decrease. In other words, this assumes a case in which annual tide data is stored in the control device and then automatic control is performed through this. Of course, in this case, the tide light 100 can operate in a stand-alone, i.e., independent form. However, in order to improve the accuracy of predicting the tides, it may be preferable for the tide light 100 to operate in conjunction with the control device 120. Of course, the tide signal light 100 can operate in a variety of ways, such as independently or in conjunction with the control device 120, and the embodiment of the present invention is not limited to any particular way.

[0033] The communication network 110 includes all wired and wireless communication networks. For example, a wired and wireless Internet network can be used or linked as the communication network 110. Here, the wired communication network includes Internet networks such as a cable network and a public switched telephone network (PSTN), and the wireless communication network includes CDMA, WCDMA (registered trademark), GSM, EPC (Evolved Packet Core), LTE (Long Term Evolution), Wibro network, etc. Of course, the communication network 110 according to the embodiment of the present invention is not limited thereto, and can be used as a connection network for a next-generation mobile communication system to be implemented in the future, for example, a cloud computing network in a cloud computing environment, a 5G network, etc. For example, when the communication network 110 is a wired communication network, an access point in the communication network can be connected to a telephone exchange, etc., but when the communication network 110 is a wireless communication network, data can be processed by connecting to an SGSN or GGSN (Gateway GPRS Support Node) operated by a communication company, or data can be processed by connecting to various relays such as a BTS (Base Transceiver Station), NodeB, e-NodeB, etc.

[0034] The communication network 110 may include an access point. The access point includes a small base station such as a Femto or Pico base station that is often installed in a building. Here, the Femto or Pico base station is classified according to the maximum number of tide signal lights 100 and the like that can be connected in the classification of small base stations. Of course, the access point may include a short-range communication module for short-range communication with the tide signal lights 100 and the like, such as ZigBee and Wi-Fi. The access point may use TCP / IP or RTSP (Real-Time Streaming Protocol) for wireless communication. Here, the short-range communication may be performed by various standards such as Bluetooth (registered trademark), ZigBee, infrared (IrDA), RF (Radio Frequency) such as UHF (Ultra High Frequency) and VHF (Very High Frequency), and ultra-wideband (UWB) in addition to Wi-Fi. This allows the access point to extract the location of the data packet, designate the best communication path for the extracted location, and transmit the data packet along the designated communication path to a next device, for example, the control device 120. The access point can share multiple lines in a general network environment, and includes, for example, a router, a repeater, and a relay.

[0035] The control device 120 may perform operations for controlling and monitoring the status of the tide lights 100 installed at multiple locations. Of course, the control device 120 may operate in any number of ways without performing separate monitoring operations. The control device 120 may be operated by a company that provides the services according to the embodiment of the present invention, or may be operated by a government or local government. The control device 120 may accurately predict or determine the tidal conditions in the area or location where the tide lights 100 are installed, and control the tide lights 100 based on the predictions.

[0036] For example, as shown in Figs. 4a and 4b, the control device 120 can display the tide signal light 100 based on materials provided by the government in order to accurately predict the state of the tides. The tides can be determined by receiving materials from the tidal forecast of the National Oceanographic Survey and using these. As a result, the light is turned on red when the tide is coming in or at high tide. If the danger is low, the light is turned on flashing. If the tide is going out and the water level is below the danger level and it is safe, the light is turned on blue. If the tide is going from low tide to high tide, the light is turned on yellow to indicate caution. Also, as shown in Fig. 4b, weather reports such as materials provided by the Weather Nuri of the Japan Meteorological Agency can be used. If the sea conditions are dangerous, such as a typhoon, heavy rain, or strong wind report, the red light is turned on. In other special cases, the tide signal light 100 can be operated arbitrarily. Of course, even in the case of arbitrary operation, remote control by the control device 120 is possible as many times as possible. The control device 120 can generate control data for controlling the tide signal light 100 by analyzing tidal forecasts and weather information from the Meteorological Administration. The control data can use 6-bit or 12-bit binary bit information. This allows for various forms, such as lighting or blinking of a red light, to be embodied using 2 or 4 bits of "1" and "0". Of course, the tide signal light 100 can control the display of the signal light based on the corresponding control data through a setting program with the control device 120 in advance.

[0037] The control device 120 works in conjunction with a third-party device 130 such as a server operated by the National Oceanographic Survey Institute or the Japan Meteorological Agency, for example, and can receive and analyze data such as tidal forecasts and weather forecasts from the Japan Meteorological Agency periodically or in real time through an API (Application Programming Interface). This allows multiple tide signal lights 100 installed in a specific area to be controlled collectively, or multiple tide signal lights 100 can be controlled sequentially in the same area if there is a tidal difference.

[0038] Of course, the control device 120 can accurately determine the situation of the place where the tide light 100 is installed using images captured by CCTV or IP cameras installed at or around the place, and can accurately control the tide light 100 based on the determination result. A representative example is determining the age of people analyzed from the images captured by the camera. Thus, in the case of elderly people, it is possible to control the tide light 100 in consideration of the promptness of action by activating the warning state of the tide light 100 early. Of course, such promptness of action can be based on data provided by an expert or a professional, and thus the control device 120 can request the tide light 100 to perform the same action several seconds earlier in the case of elderly people compared to normal people.

[0039] For example, the control device 120 notifies people of dangerous situations through the tide signal light 100 according to the program settings, and can also notify the local government's emergency room of the dangerous situation by analyzing the presence or absence of people through the captured video. In this case, the emergency situation can be notified not only to the emergency room but also to the fire department and police station in the relevant area to ensure safety.

[0040] The third party device 130 may include a server operated by a government agency such as the National Oceanographic Survey or the Meteorological Agency, or a computer operated by an administrator. The third party device 130 may provide data related to tidal forecasts or weather to the control device 120 periodically or in real time. By linking with an API, the data of the relevant data can be transmitted in real time without changing over time. In addition, the third party device 130 may include a situation room device of a local government or a related party device of a local fire station or police station. The related party device may include a computer, a smartphone, etc. The related party device may be notified of an emergency situation at the location where the tide signal light 100 is installed.

[0041] FIG. 5 is a block diagram showing a detailed structure of the tide signal light of FIG.

[0042] As shown in FIG. 5, a tide signal light 100 according to an embodiment of the present invention includes some or all of an interface unit 500, a control unit 510, a display unit 520 and a storage unit 530, and may further include peripheral devices such as an IP camera and an electronic display board.

[0043] Here, "including some or all" means that the tide signal light 100 is configured with some components such as the storage unit 530 omitted, or that some components such as the storage unit 530 are integrated with other components such as the control unit 510, and it is described as including everything to facilitate a full understanding of the invention.

[0044] The interface unit 500 may include a user interface unit or a communication interface unit. Here, the user interface unit is a unit in which a user inputs data related to the tides so that the tide signal light 100 operates independently. For example, an administrator who manages the tide signal light 100 can set the operating state of the tide signal light 100 based on tidal data as much as desired. In addition, the communication interface unit such as a communication module can communicate with the control device 120 via the communication network 110 in FIG. 1. For example, it can receive control data from the control device 120 and control the state of the display unit 520 that constitutes a signal light consisting of red, yellow, and blue colors based on the control data. Here, the display unit 520 can be composed of LED elements.

[0045] Of course, the communication interface unit can receive analysis data such as weekly, monthly, and daily data on a daily, weekly, or monthly basis from the control device 120 in Fig. 1 and store it in the storage unit 530, and then the control unit 510 can control the display unit 520 on a daily, weekly, or monthly basis based on the data. Therefore, the embodiment of the present invention is not particularly limited to any one of the forms.

[0046] Also, the interface unit 500 may further include a camera, etc., and in this case, it may selectively operate to take pictures only when tides occur. This allows accurate detection of dangerous situations while simultaneously saving power. As described above, in the case of a camera, it may be operated under the control of the control unit 510 or the control device 120 of FIG. 1 to take pictures and transmit the taken pictures. In the case of further using the taken pictures, for example, it is possible to help elderly people who are less swift in their actions to take action in sufficient time by notifying them of the same signal a little earlier, i.e., earlier, than younger people.

[0047] The control unit 510 is responsible for the overall control operation of the interface unit 500, the display unit 520, and the storage unit 530 in Fig. 5. When the control data for controlling the tide signal light 100 in Fig. 1 is provided via the interface unit 500, the control unit 510 can store the control data in the storage unit 530. Of course, the data can be provided in real time, but as described above, the data can also be received on a daily, weekly, or monthly basis and stored in the storage unit 530. Thus, the control unit 510 controls the operating state of the display unit 520 based on the data.

[0048] The control unit 510 can turn on a red light when the tide is coming in or when it is high tide. Also, when the danger is low, the control unit 510 can operate the red light in a blinking manner. And, when the tide is going out and the water level is below the danger level and it is safe, the control unit 510 can turn on a blue light. When the tide is going from low tide to high tide, the control unit 510 can turn on a yellow light to indicate caution. In addition, the control unit 510 can notify people that the tide is changing from high tide to low tide or from low tide to high tide through a yellow directional indicator light as shown in FIG. 3.

[0049] For example, if the tide signal light 100 further includes an electronic board next to the display unit 520, the control unit 510 can further control the electronic board. In this regard, the signal light can be configured to include a display unit 520 in red, yellow, blue, etc., and an electronic board that informs people of the contents of the display unit 520. For example, the control unit 510 can provide any number of guidance messages related to the situation, such as "please leave quickly" or "it is dangerous", on the electronic board. It can also display whether the current state is high tide or low tide. Of course, the data of the message is stored in the storage unit 530, and the signal light and electronic board can be controlled so that an appropriate operation is performed depending on the case where a preset condition is satisfied. In other words, the control unit 510 turns on the red light when it is high tide, and at the same time displays the message "high tide" on the electronic board.

[0050] As described above, the signal light may include the display unit 520 and the light board. Of course, the light board may also be included in the category of the display unit 520. In the case of a signal light, it may be configured to include a red light, a yellow light, and a blue light, and the yellow light can indicate a direction in addition to simply indicating the color yellow. This can indicate whether the tide is changing from low tide to high tide, or from high tide to low tide, etc. Also, the display unit 520 turns on the red light when the tide is coming in or at high tide under the control of the control unit 510, and the light board can display any number of relevant messages.

[0051] The storage unit 530 can store various types of data to be processed under the control of the control unit 510. Of course, the stored data can be control data provided by the control device 120 of Fig. 1. The control unit 510 controls the display unit 520 based on the control data stored in the storage unit 530.

[0052] In addition to the above, the interface unit 500, the control unit 510, the display unit 520, and the storage unit 530 in FIG. 5 can perform various operations, and other details have been fully explained above, so the contents thereof shall apply instead.

[0053] The interface unit 500, the control unit 510, the display unit 520, and the storage unit 530 in FIG. 5 according to the embodiment of the present invention are configured as hardware modules physically separated from each other, and each module can store and execute software for performing the above operations. However, the software is a collection of software modules, and each module can be formed by hardware in any number of ways, so it is not particularly limited to the configuration of software or hardware. For example, the storage unit 530 can be a storage or memory, which is hardware. However, it is not particularly limited to the above content, because it is possible to store information in a software-based repository in any number of ways.

[0054] Meanwhile, as another embodiment of the present invention, the control unit 510 may include a CPU and a memory, and may be formed as a single chip. The CPU may include a control circuit, an arithmetic unit (ALU), an instruction analysis unit, and a registry, and the memory may include a RAM. The control circuit may perform a control operation, the arithmetic unit may perform an arithmetic operation of binary bit information, and the instruction analysis unit may perform an operation of converting a high-level language, including an interpreter or a compiler, into a machine language and vice versa, and the registry may be involved in software-like data storage. According to the above configuration, for example, at the beginning of the operation of the control device 120, a program stored in the control device 120 may be copied and loaded into a memory, i.e., a RAM, and then executed, thereby rapidly increasing the data arithmetic processing speed. In the case of a deep learning model, the program may be stored in a GPU memory instead of a RAM, and the execution speed may be accelerated using a GPU.

[0055] FIG. 6 is a flow chart illustrating a method of operating a tide light according to an embodiment of the present invention.

[0056] For ease of explanation, referring to Fig. 6 together with Fig. 1, the tide signal light 100 according to an embodiment of the present invention is a signal light installed on the seashore to prevent accidents caused by tides, and displays the change in tide from high tide to low tide and from low tide to high tide S600. Tide is a term that collectively refers to low tide (when the tide is at its lowest) and high tide (when the tide is at its highest). Therefore, the signal light can turn on a red light at high tide and a blue light at low tide, and the change in tide can be displayed with a yellow directional indicator light.

[0057] In this way, the tide signal light 100 controls the operation state of the signal light to indicate the change from high tide to low tide and from low tide to high tide based on the tide data (S610). The tide signal light 100 can inform people of the change from high tide to low tide by controlling the yellow directional indicator light to turn from red to blue or from blue to red.

[0058] In addition to the above, the tide light 100 of FIG. 1 may perform a variety of operations, other details of which have been fully described above and are hereby incorporated by reference.

[0059] Meanwhile, even if all components constituting the embodiment of the present invention are described as being combined or operating in combination, the present invention is not necessarily limited to such an embodiment. That is, within the scope of the object of the present invention, all the components can be selectively combined and operated in one or more combinations. Also, all the components can be embodied as a single independent piece of hardware, but some or all of the components can be selectively combined and embodied as a computer program having a program module that performs some or all of the functions combined in one or more pieces of hardware. Codes and code segments constituting the computer program can be easily deduced by a person skilled in the art of the present invention. Such a computer program can be embodied by being stored in a non-transitory computer readable storage medium and being read and executed by a computer.

[0060] Here, the non-transiently readable recording medium refers to a medium that stores data semi-permanently and can be read by a device, rather than a medium that stores data for a short time such as a register, cache, memory, etc. In particular, the above-mentioned program may be provided by being stored in a non-transiently readable recording medium such as a CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM, etc.

[0061] Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and it goes without saying that various modifications can be made by a person having ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims, and such modifications are not to be understood separately from the technical ideas and perspectives of the present invention.

Claims

1. Signal lights installed on the seashore to prevent accidents caused by tides; and a control unit for controlling the operation state of the signal light so as to display a change state from high tide to low tide and from low tide to high tide based on the data showing the tides, The signal light includes a directional light between a red light and a blue light, The control unit controls the direction light to display the change state from high tide to low tide and from low tide to high tide on the signal light. A tide signal light characterized by:

2. The control unit, when displaying the high tide to low tide situation on the signal light, displays the direction of the directional light from the red light to the blue light, and when displaying the low tide to high tide situation on the signal light, displays the direction of the directional light from the blue light to the red light.

2. A tide signal light as claimed in claim 1.

3. The signal light further includes a convex lens portion for adjusting a viewing angle so that a user can clearly see the signal light from multiple angles.

2. A tide signal light as claimed in claim 1.

4. The signal light further includes a sunshade for improving visibility in sunlight.

2. A tide signal light as claimed in claim 1.

5. The control unit controls the operation state of the signal light in cooperation with a control device that provides control data as an analysis result of the ocean data that shows the tides.

2. A tide signal light as claimed in claim 1.

6. A step in which a signal light installed on the beach to prevent accidents caused by tides displays the change of tide from high tide to low tide and from low tide to high tide, respectively; and a step of controlling an operation state of the signal light so as to display the change state from the high tide to the low tide and from the low tide to the high tide, based on the data indicating the tides, by the control unit; The signal light includes a directional light between a red light and a blue light, The control unit controls the direction light to display the change state from high tide to low tide and from low tide to high tide on the signal light. A method for driving a tide signal light, comprising:

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