JP7373784B2 - Lighting equipment and lighting systems - Google Patents

Description

TECHNICAL FIELD The present invention relates to lighting fixtures and lighting systems.

BACKGROUND ART Lighting equipment such as street lights that are installed in areas where people pass by emit light around the area where they are installed, and are used to ensure visibility for passersby even at night. Patent Document 1 discloses a street light equipped with communication means, sensors, etc. in addition to the functions of a normal street light.

JP2017-059414A

Such lighting equipment, which is installed to illuminate areas where people pass, improves the safety of passersby by ensuring their visibility. However, simply increasing visibility may put passersby at risk, and there is a need for means to increase safety other than by increasing visibility.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide lighting equipment and the like that can further enhance safety for passersby.

A lighting device according to one aspect of the present invention includes a lamp body, a first light source and a second light source provided in the lamp body, and the first light source irradiates illumination light to a place where people pass. , the second light source emits display light indicating the position of a structure existing at the location.

A lighting system according to one aspect of the present invention includes the lighting fixture described above and a sensor that detects the water level.

A lighting system according to one aspect of the present invention includes a plurality of the above lighting fixtures, and the second light source of each of the plurality of lighting fixtures emits the display light indicating the position of the same structure.

According to the lighting equipment and the like according to the present invention, it is possible to further improve the safety of passersby.

FIG. 1 is a schematic diagram for explaining a lighting system according to an embodiment. FIG. 2 is a top view of the lighting system according to the embodiment. FIG. 3 is a block diagram showing the functional configuration of the lighting system according to the embodiment. FIG. 4 is a flowchart of the operation of the second light source in operation example 1. FIG. 5 is a flowchart of the operation of the second light source in operation example 2. FIG. 6 is a flowchart of the operation of the second light source in operation example 3.

Embodiments of the present invention will be described in detail below with reference to the drawings. It should be noted that the embodiments described below each represent a preferred specific example of the present invention. Therefore, the numerical values, shapes, components, arrangement and connection forms of the components, steps (processes) and order of steps, etc. shown in the following embodiments are merely examples, and are not intended to limit the present invention. . Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims of the present invention will be described as arbitrary constituent elements.

Furthermore, each figure is a schematic diagram and is not necessarily strictly illustrated. Furthermore, in each figure, the same components are designated by the same reference numerals.

(Embodiment)
[Overview of lighting system]
First, the overall configuration of the lighting system according to this embodiment will be described. FIG. 1 is a schematic diagram for explaining a lighting system according to this embodiment. FIG. 2 is a top view of the lighting system according to the embodiment.

As shown in FIGS. 1 and 2, the lighting system 1000 includes a lighting fixture 100 and a sensor 200. The lighting fixture 100 is a lighting fixture installed so that it can illuminate a place where people pass. The lighting fixture 100 is, for example, a street light and is installed on the street 300. Specifically, the lighting fixture 100 is installed on a street 300 where a structure such as a gutter 310 exists. In this specification, the street 300 is an example of a place where people pass, and the gutter 310 is an example of a structure that exists on the street 300. Furthermore, structures that exist in places where people pass include not only structures that exist inside places where people pass, but also structures that exist adjacent to places where people pass.

Note that the lighting fixture 100 may be installed in a place where people pass, and for example, it may be installed in an outdoor space such as a park, a parking lot, a forest road, the premises of an apartment complex, or the premises of a factory. .

The lighting fixture 100 includes a lamp body 10 and a first light source 11 and a second light source 12 provided within the lamp body 10.

The lamp body 10 includes a first light source 11 and a second light source 12 inside. The lamp body 10 is supported above the street 300 by a columnar member 110 erected on the street 300 via a support member 120 . In addition, in FIG. 1, the light body 10 is supported by a columnar member 110 that stands on the street 300, but as long as the lighting fixture 100 can illuminate the street 300, there are no restrictions on the installation method. For example, it may be attached to surrounding buildings.

The first light source 11 irradiates the street 300 with illumination light 111 . The first light source 11 is a light source for illuminating a wide area of the street 300 around the lighting fixture 100 in order to improve the visibility of passersby 400, similar to a conventional street light.

The second light source 12 emits display light 112 that indicates the position of the gutter 310. This makes it easier for the passerby 400 to recognize the position of the gutter 310 and reduces the possibility of falling into the gutter 310. Therefore, the safety of passersby 400 can be improved. FIG. 1 shows a street 300 flooded with rainwater 320 due to heavy rain or the like. When the street 300 is flooded and the water level h on the street 300 reaches a predetermined level or higher, the gutter 310 becomes invisible to passersby 400, increasing the possibility that the passerby 400 will fall into the gutter 310 without noticing it. Irradiation of the display light 112 makes it easier for passersby 400 to recognize the position of the gutter 310, thereby further increasing safety for passersby.

Although the gutter 310 is exemplified as a structure, the structure is not limited to this, and the structure is a structure that poses a risk of falling or falling to passersby 400, such as a recess or a protrusion existing in the street 300. . The lighting system 1000 of this embodiment is particularly effective when there is a structure on the street 300 that has a recessed portion, such as a gutter 310, because if the street 300 is flooded, it becomes difficult to be recognized by passersby 400.

In FIGS. 1 and 2, the lighting fixture 100 includes one second light source 12, but it is equipped with a plurality of second light sources 12, and one lighting fixture 100 uses display light 112 to indicate the positions of a plurality of structures. may be irradiated.

The display light 112 is emitted linearly onto the street 300 along the gutter 310, for example, as shown in FIG. The display light 112 may be emitted in an arrow shape or in a striped form, or may be emitted so that characters are displayed on the street 300. Moreover, the display light 112 may be light of a single light color, or may be light that is a combination of light of a plurality of light colors. In addition, in FIGS. 1 and 2, the display light 112 is irradiated onto the street 300 on the side where the passerby 400 passes rather than the gutter 310, but the display light 112 is not irradiated within the range where the passerby 400 can recognize the display light 112. That's fine. For example, the display light 112 may be irradiated around the side gutter 310 or may be irradiated onto the side gutter 310.

As shown in FIGS. 1 and 2, in the lighting fixture 100, the second light source 12 emits display light 112 between the second light source 12 and the gutter in a top view from the side of the gutter 310 where a passerby 400 passes. It may be irradiated. In this case, when the position of the water surface 330 of the street 300 rises due to flooding, the position where the display light 112 is irradiated onto the water surface 330 moves to the side where the passerby 400 passes rather than the gutter 310. Therefore, even if the water surface 330 rises, the distance between the gutter 310 and the position where the display light 112 is irradiated increases, making it more difficult for passersby 400 to approach the gutter 310.

Further, as shown in FIG. 2, the lighting system 1000 includes a plurality of lighting fixtures 100. As shown in FIG. 2, the second light sources 12 of each of the plurality of lighting fixtures 100 emit display light 112 indicating the position of the same gutter 310, and a portion of each display light 112 overlaps. Since the two second light sources 12 emit display light 112 indicating the same position of the gutter 310, even if the second light source 12 of one lighting fixture 100 fails, the second light source 12 of the other lighting fixture 100 will Display light 112 is emitted from two light sources 12 . Note that the number of lighting fixtures 100 may be set depending on the structure such as the gutter 310, and is not limited to two as shown in FIG. 2. Further, the second light source 12 of each of the lighting fixtures 100 may emit display light 112 that indicates the position of a different structure. Furthermore, the second light sources 12 of each of the lighting fixtures 100 may emit display light 112 to an overlapping position.

The sensor 200 is a sensor that detects the water level h of the street 300 around the lighting fixture 100. The sensor 200 is capable of communicating with the lighting fixture 100 and notifies the lighting fixture 100 of the detected water level h.

[Lighting system configuration]
The detailed configuration of the lighting system 1000 will be described below. FIG. 3 is a block diagram showing the functional configuration of the lighting system 1000 according to the embodiment.

The lighting system 1000 includes a lighting fixture 100 and a sensor 200. The lighting fixture 100 includes a first light source 11 , a second light source 12 , a control section 13 , a lighting circuit 14 , a communication section 15 , and a drive section 16 provided within the lamp body 10 . Note that the control unit 13, the lighting circuit 14, and the communication unit 15 may not be provided within the lamp body 10, but may be provided in a separate casing or the like and connected to the lamp body 10.

First, each element of the lighting fixture 100 will be explained.

The lamp body 10 is a housing that accommodates the first light source 11, the second light source 12, the control section 13, the lighting circuit 14, the communication section 15, and the drive section 16, and is made of materials such as metal and resin. The lamp body 10 has, for example, a structure in which each component can be hermetically sealed, and protects each component from wind, rain, impact, and the like.

The first light source 11 is a light source that emits illumination light 111. The first light source 11 is controlled to turn on and off by the control unit 13 according to a set time schedule and the like. The first light source 11 may be lit all the time. When the first light source 11 emits illumination light 111, the lighting fixture 100 functions as a general street light. Examples of the first light source 11 include an LED (Light Emitting Diode) light emitting module that emits white light, a fluorescent lamp, an incandescent lamp, and the like. For example, when the first light source 11 is an LED light emitting module, the first light source 11 may be a light emitting module in which a plurality of LED elements are mounted on a substrate. It may be equipped with a transparent lens or a transparent cover.

The second light source 12 emits display light 112 that indicates the position of the structure where it is installed. The second light source 12 is controlled to turn on and off by the control unit 13 . The second light source 12 may be lit all the time. The second light source 12 may have the light distribution of the display light 112 controlled by the control unit 13 .

Further, the display light 112 and the illumination light 111 may have different light colors. For example, the color of the display light 112 may be red, orange, or yellow. Since red, orange, or yellow light is a color that people tend to perceive as dangerous, it can alert passersby 400 to caution.

Further, the display light 112 emitted by the second light source 12 is preferably light with higher directivity than the illumination light 111. This makes the position illuminated by the display light 112 clear, making it easier for passersby 400 to recognize the gutter 310.

Examples of the second light source 12 include laser light sources such as a semiconductor laser and a gas laser. Thereby, the second light source 12 can easily emit highly directional display light 112. The second light source 12 may be configured with one laser light source, may be configured using multiple laser light sources of the same type, or may be configured using multiple laser light sources with different light colors or light amounts. It's okay.

The control unit 13 controls lighting and extinguishing of the first light source 11 and the second light source 12 via the lighting circuit 14 . The control unit 13 turns on or off the first light source 11 based on time information such as a time schedule, for example. Further, the control unit 13 acquires information on the water level h from the sensor 200, and turns on or off the second light source 12 based on the information on the water level h. The control unit 13 may cause the communication unit 15 to receive weather information, and may turn on or off the second light source 12 based on the obtained weather information. Furthermore, the control unit 13 may control the light distribution of the display light 112 emitted by the second light source 12 based on the information on the water level h obtained from the sensor 200 via the drive unit 16.

Further, in order to make it easier for passersby 400 to notice the display light 112, the control unit 13 may cause the drive unit 16 to drive the second light source 12 so as to change the position where the display light 112 is irradiated. , the display light 112 may be blinked by controlling the supply of power to the lighting circuit 14.

The control unit 13 includes, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like. The control unit 13 may be a microcomputer that includes a memory that stores programs and a microprocessor, or may be hardware that includes an analog circuit and a digital circuit. Further, the control unit 13 may include a clock circuit or the like.

The lighting circuit 14 is a circuit that lights up the first light source 11 and the second light source 12 by supplying power to the first light source 11 and the second light source 12. The lighting circuit 14 may include a dimming circuit such as a PWM (Pulse Width Modulation) control circuit for dimming the first light source 11 and the second light source 12.

The communication unit 15 is a communication circuit for the lighting fixture 100 to receive weather information via a wide area communication network 20 such as the Internet. Specifically, the communication unit 15 receives a weather warning regarding rain or flooding in the area to which the street 300 belongs. The communication unit 15 transmits the received information to the control unit 13. A weather warning regarding rain or flooding is, for example, a heavy rain, flood, wave, storm surge or tsunami warning. The communication performed by the communication unit 15 may be wired communication or wireless communication. The communication standard for communication performed by the communication unit 15 is not particularly limited. The communication unit 15 includes a wired or wireless communication interface.

The drive unit 16 drives the second light source 12 in order to change the light distribution of the display light 112. The drive unit 16 is composed of, for example, an electric motor, and changes the direction of the display light 112 emitted from the second light source 12 by moving and rotating the second light source 12 using the electric motor.

Next, the sensor 200 will be explained.

The sensor 200 is a water level sensor that detects the water level h on the street 300. The sensor 200 is connected to the control unit 13 and outputs information on the water level h to the control unit 13. As the sensor 200, various water level sensors can be used, such as a light wave type, a float type, an analog type using an electrode rod, or a pressure detection type. Among these, the sensor 200 is preferably a light wave type water level sensor that detects the water level using reflected light from the water surface. Specifically, the light wave water level sensor measures the water level by emitting light from an infrared laser or the like onto the water surface, measuring the time until the reflected light returns, and measuring the distance to the water surface. Since the sensor 200 is a light wave water level sensor, there is no need for the sensor 200 to be in contact with the water surface, so there are many options for installing the sensor 200. For example, it can be installed on the columnar member 110 where the lighting fixture 100 is installed. can do. Furthermore, since the sensor 200 is installed above the water surface 330, the possibility that the sensor 200 will be washed away by a flood or the like can be reduced.

When the lighting system 1000 includes a plurality of lighting fixtures 100, one sensor 200 may output information on the water level h to the plurality of lighting fixtures 100, or a plurality of sensors 200 are provided, and each lighting fixture 100 Different sensors 200 may output information on the water level h.

Although the sensor 200 is directly connected to the control unit 13 in FIG. 2, it is also possible to send information on the water level h to the control unit 13 via the communication unit 15 by wired or wireless communication. good. Further, the sensor 200 may be included in the lighting fixture 100.

[Operation example 1]
Next, operation example 1 of the lighting system 1000 will be described. First, the operation of the first light source 11 of the lighting fixture 100 will be described. Normally, the control unit 13 of the lighting fixture 100 controls the supply of power to the lighting circuit 14 based on a time schedule or the like, and controls the lighting state in which the first light source 11 emits the illumination light 111 and the lighting state in which the first light source 11 does not emit the illumination light 111. The lights-out state is repeated every day. For example, the first light source 11 is turned on when the street 300 around the lighting fixture 100 is installed is dark, and is turned off when the street 300 is bright. Thereby, the lighting fixture 100 functions as a general street light. The first light source 11 may always emit illumination light 111. Furthermore, the lighting fixture 100 may further include a brightness sensor, and the control unit 13 may control turning on and off of the first light source 11 based on information from the brightness sensor.

Next, the operation of the second light source 12 of the lighting fixture 100 will be explained. FIG. 4 is a flowchart of the operation of the second light source 12 in operation example 1.

First, the control unit 13 determines whether the water level h of the street 300 is equal to or higher than a predetermined value based on the information about the water level h output from the sensor 200 (S11). The determination in step S11 is continued until the water level h is determined to be equal to or higher than a predetermined value (No in S11). That is, while the water level h is below a predetermined level, only the first light source 11 repeats the lighting state and the lighting off state every day, and the lighting fixture 100 functions as a normal street light.

If it is determined in step S11 that the water level h is equal to or higher than the predetermined value (Yes in S11), the control unit 13 turns on the second light source 12 by supplying power to the second light source 12 via the lighting circuit 14. Turn it on. As a result, the display light 112 indicating the position of the gutter 310 is irradiated (S12). The water level h used in the determination for turning on the second light source 12 may be set to a water level h that makes it difficult for passersby 400 to recognize the gutter 310, depending on the shape of the street 300 and the gutter 310.

Next, the control unit 13 determines whether the water level h of the street 300 is below a predetermined value based on the information about the water level h output from the sensor 200 (S13). The process in step S13 is continued until the water level h is determined to be below a predetermined value (No in S13). In other words, the display light 112 continues to be emitted from the second light source 12 while the water level h is equal to or higher than the predetermined level.

If it is determined in step S13 that the water level h is below the predetermined value (Yes in S13), the control unit 13 stops the power supply via the lighting circuit 14 and turns off the second light source 12 (S14). . As a result, only the first light source 11 repeats the lighting state and the non-lighting state every day again, and the lighting fixture 100 functions as a general street light.

As described above, in operation example 1, in the lighting system 1000, the lighting fixture 100 causes the first light source 11 to irradiate the illumination light 111, thereby increasing the visibility of the surroundings of the lighting fixture 100. Furthermore, the lighting fixture 100 detects the water level of the street 300 around the lighting fixture 100, and when the water level reaches a predetermined water level or higher, causes the second light source 12 to emit display light 112 indicating the position of the gutter 310. . As a result, even if the street 300 is flooded due to heavy rain or a tsunami, and the gutter 310 becomes difficult to see, the display light 112 indicates the position of the gutter 310, making it easier for passersby 400 to recognize the gutter 310. 310 and being washed away. Therefore, the lighting fixture 100 can further enhance the safety of passersby 400.

In addition, since the display light 112 is emitted only while the water level is above the predetermined water level h, the display light 112, which is highly directional light, is not emitted during normal times when the position of the gutter 310 is easy to recognize. First, the risk of damaging the eyes of passersby 400 can be reduced.

[Operation example 2]
Next, a second operation example of the lighting system 1000 will be described. The operation of the first light source 11 of the lighting fixture 100 is the same as in operation example 1. FIG. 5 is a flowchart of the operation of the second light source 12 in operation example 2.

First, the control unit 13 determines whether the water level h of the street 300 is equal to or higher than a predetermined value based on the information on the water level h output from the sensor 200 (S21). The determination in step S21 is continued until the water level h is determined to be equal to or higher than a predetermined value (No in S21).

If it is determined in step S21 that the water level h is equal to or higher than the predetermined value (Yes in S21), the control unit 13 turns on the second light source 12 by supplying power to the second light source 12 via the lighting circuit 14. Turn it on. Thereby, the display light 112 indicating the position of the gutter 310 is irradiated (S22).

Next, the control unit 13 determines whether the water level h of the street 300 has changed based on the information about the water level h output from the sensor 200 (S23). The determination in step S23 is continued until the water level h changes (No in S23).

When it is determined in step S23 that the water level h has changed (Yes in S23), the control unit 13 further determines whether the water level h is equal to or lower than a predetermined water level (S24). If the water level h is not below the predetermined value (No in S24), the control unit 13 causes the drive unit 16 to change the light distribution of the display light 112 irradiated by the second light source 12 (S25). Specifically, the control unit 13 changes the light distribution of the display light 112 so that the position where the display light 112 is irradiated in a top view does not change even if the water level changes. After the process in step S25, the control unit 13 performs the determination in step S23 again.

If it is determined in step S24 that the water level h is below the predetermined value (Yes in S24), the control unit 13 stops the power supply via the lighting circuit 14 and turns off the second light source 12 (S26). . As a result, only the first light source 11 irradiates the street 300 with illumination light 111 again, and the lighting fixture 100 functions as a normal street light.

In changing the light distribution of the display light 112 in steps S23 to S25, a threshold may be set for the amount of change in the water level h, and the light distribution may be changed when it is determined that the amount of change is greater than or equal to the threshold. Further, the display light 112 may be continuously controlled so that the water level h and the light distribution are linked.

As explained above, in operation example 2, similarly to operation example 1, lighting fixture 100 detects the water level h of the street 300 around lighting fixture 100, and when the water level h exceeds the predetermined water level h, , the second light source 12 emits display light 112 indicating the position of the gutter 310. Furthermore, in operation example 2, the light distribution of the display light 112 is controlled according to the water level h, so that even if the water level h changes, the position where the display light 112 is irradiated when viewed from above remains the same. becomes possible. This can prevent the water level h from changing and the position of the display light 112 moving above the gutter 310 when the street 300 is viewed from above, thereby reducing the risk of the passerby 400 falling into the gutter 310. It can be lowered further.

[Operation example 3]
Next, a third example of operation of the lighting system 1000 will be described. The operation of the first light source 11 of the lighting fixture 100 is the same as in operation example 1. FIG. 6 is a flowchart of the operation of the second light source 12 in operation example 3.

The control unit 13 causes the communication unit 15 to acquire weather information, and determines from the obtained weather information whether a weather warning regarding rain or flooding has been issued for the area to which the street 300 belongs (S31). The determination in step S31 continues until it is determined that a weather warning regarding rain or flooding has been issued (No in S31). In other words, while no weather warning regarding rain or flooding has been issued for the area to which the street 300 belongs, only the first light source 11 repeats the on and off states every day, and the lighting fixture 100 functions as a normal street light. .

If it is determined in step S31 that a weather warning regarding rain or flooding has been issued (Yes in S31), the control unit 13 supplies power to the second light source 12 via the lighting circuit 14, thereby causing the second light source 12 to lights up. As a result, the display light 112 indicating the position of the gutter 310 is irradiated (S32).

Next, the control unit 13 causes the communication unit 15 to acquire weather information, and determines from the obtained weather information whether the issued weather warning regarding rain or flooding has been canceled (S33). The process in step S33 is continued until it is determined that the issued weather warning regarding rain or flooding has been canceled (No in S33). That is, while a weather warning regarding rain or flooding is issued, the display light 112 continues to be emitted from the second light source 12.

When it is determined in step S33 that the weather warning regarding rain or flooding has been canceled (Yes in S33), the control unit 13 stops the power supply via the lighting circuit 14 and turns off the second light source 12 (S34 ). As a result, only the first light source 11 irradiates the street 300 with illumination light 111 again, and the lighting fixture 100 functions as a normal street light.

As described above, in operation example 3, the lighting fixture 100 acquires weather information and indicates the position of the gutter 310 when a weather warning regarding rain or flooding is issued at the location where the lighting fixture 100 is installed. The second light source 12 is caused to irradiate the display light 112. As a result, when the possibility that the street 300 is flooded increases, the display light 112 indicates the position of the gutter 310, so that passersby 400 can easily recognize the gutter 310 even when the street 300 is flooded. Therefore, the safety of passersby 400 can be improved.

Furthermore, while the display light 112 is illuminated, it is indicated that a weather warning regarding rain or flooding has been issued, so that passersby 400 can be aware that a weather warning regarding rain or flooding has been issued. can be recognized.

[Effects etc.]
As described above, the lighting fixture 100 includes the lamp body 10 and the first light source 11 and the second light source 12 provided within the lamp body 10. The first light source 11 emits illumination light 111 onto the street 300, and the second light source 12 emits display light 112 indicating the position of the gutter 310 present on the street 300.

Thereby, the lighting fixture 100 uses the illumination light 111 of the first light source 11 to improve the visibility of the passerby 400 at night or the like. Furthermore, the display light 112 of the second light source 12 makes it easier for passersby 400 to recognize the position of the gutter 310, reducing the possibility of falling into the gutter 310. Therefore, the lighting fixture 100 can further enhance the safety of passersby 400.

Further, for example, the second light source 12 may emit the display light 112 when the water level h on the street 300 reaches a predetermined level or higher.

As a result, even if the street 300 is flooded due to heavy rain or a tsunami, and the gutter 310 becomes difficult to see, the display light 112 indicates the position of the gutter 310, making it easier for passersby 400 to recognize the gutter 310. 310 and being washed away.

Further, for example, the second light source 12 may irradiate the display light 112 when a weather warning regarding flooding or rain is issued in the area to which the street 300 belongs.

As a result, when the possibility that the street 300 is flooded increases, the display light 112 indicates the position of the gutter 310, so that passersby 400 can easily recognize the gutter 310 even when the street 300 is flooded.

(Other embodiments)
Although the embodiments have been described above, the present invention is not limited to the above embodiments.

In the operation examples 1 to 3 of the above-described embodiments, in the lighting equipment, the control unit controls the irradiation of display light to the second light source based on the water level or weather warning, but the present invention is not limited to this. The lighting equipment does not need to include a control unit and a communication unit, and may emit display light all the time, for example, or may allow a person to control the illumination of display light using a switch or the like.

Further, in the above embodiment, a gutter is illustrated as an example of a structure, but the structure is not limited to this. Structures include, for example, structures such as manholes, cliffs, and irrigation channels into which passersby may fall, as well as structures into which passersby may trip such as curbs, steps, ledges, and poles. good.

Further, in the first to third operational examples of the embodiments described above, the control unit determines whether to cause the second light source to emit display light based on either the water level or the weather warning. Not limited to. The control unit obtains water level information and weather information, and when the water level reaches a predetermined level or higher. The second light source may emit display light in either of the following cases: and when a weather warning is issued. Thereby, even if either the sensor or the communication unit fails, the display light is irradiated.

Further, in the operation examples 1 to 3 of the above embodiments, the second light source is turned off when the water level falls below a predetermined level or when a weather warning is cancelled, but this is not limited to this. do not have. The control unit does not need to turn off the second light source; for example, the lighting fixture may include a turn-off button or the like, and when the turn-off button is pressed, the second light source may be turned off.

Other embodiments may be obtained by making various modifications to each embodiment that those skilled in the art can think of, or by arbitrarily combining the components and functions of each embodiment without departing from the spirit of the present invention. The present invention also includes such forms.

10 Light body 11 First light source 12 Second light source 100 Lighting fixture 111 Illumination light 112 Display light 200 Sensor 300 Street 310 Gutter 1000 Lighting system

Claims (11)

Light body and
a first light source and a second light source provided within the lamp body;
Equipped with
The first light source irradiates illumination light to a place where people pass,
The second light source emits display light indicating the position of a structure existing at the location when the water level at the location reaches a predetermined level or higher.
lighting equipment. The display light has a light distribution controlled according to the water level.
The lighting fixture according to claim 1. Light body and
a first light source and a second light source provided within the lamp body;
Equipped with
The first light source irradiates illumination light to a place where people pass,
The second light source emits display light indicating the position of a structure existing at the location,
The structure is a gutter,
When the place is viewed from above, the second light source is spaced from the gutter on the side of the gutter where the person passes, and when the place is viewed from the top from the side of the gutter where the person passes. irradiating the display light toward a region between the second light source and the gutter at the location of the case;
lighting equipment. the structure is a gutter;
The lighting fixture according to claim 1 or 2. The display light has a different light color from the illumination light,
A lighting fixture according to any one of claims 1 to 4. The display light is light with higher directionality than the illumination light,
A lighting fixture according to any one of claims 1 to 5. The second light source is a laser light source.
A lighting fixture according to any one of claims 1 to 6. The second light source emits the display light when a weather warning regarding flooding or rain is issued in an area to which the location belongs.
A lighting fixture according to any one of claims 1 to 7. The lighting fixture according to claim 1 or 2,
A sensor that detects the water level,
lighting system. The sensor detects the water level using reflected light from the water surface.
A lighting system according to claim 9 . A plurality of lighting fixtures according to any one of claims 1 to 8 are provided,
the second light source of each of the plurality of lighting fixtures emits the display light indicating the position of the same structure;
lighting system.

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