street lights

Abstract

To provide a street light capable of emitting illumination light from a high position while suppressing the height at which a solar panel is arranged. [Solution] A street light comprising a first power generation unit and a second power generation unit that generate electricity using sunlight, a support unit that holds the first and second power generation units, and an illumination unit that emits illumination light, wherein the horizontal length of the first and second power generation units is greater than the height, the first power generation unit is positioned below and forward of the second power generation unit, the first and second power generation units are positioned at different horizontal positions, a first blank area is formed to the side of the first power generation unit and below the second power generation unit, and a second blank area is formed to the side of the second power generation unit and above the first power generation unit, and the illumination unit is positioned in either the first blank area or the second blank area.

Description

[Technical Field]

[0001] The present invention relates to a street light, and more particularly to a street light that emits light from a lighting unit using electricity generated from sunlight. [Background technology]

[0002] An autonomous street light has been proposed that includes a solar panel and a lighting unit, stores the electricity generated by the solar panel in a secondary battery, and emits light from the lighting unit using the power supplied from the secondary battery (see, for example, Patent Document 1). Such an autonomous street light has the advantage of being able to illuminate the street at night even in situations where commercial power cannot be secured, such as during a disaster or in a remote location. Another advantage is that the use of LEDs (Light Emitting Diodes) in the lighting unit reduces the frequency of maintenance work. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-220348 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional autonomous street lights are designed to prioritize the power generation efficiency of solar panels, so the lighting unit is positioned below the solar panels to avoid shading the solar panels. This results in the lighting unit being positioned too low, making it difficult to illuminate a wide area. Furthermore, solar panels are generally installed facing south, so if the lighting unit is positioned away from the solar panels, the lighting direction and range are limited. Furthermore, in order to raise the solar panel and lighting unit positions, the poles supporting the solar panels must be long. However, because the solar panels are large, the poles must be strong to prevent them from collapsing or deforming due to wind force, making it difficult to reduce the weight of the street lights.

[0005] Therefore, the present invention has been made in consideration of the above-mentioned conventional problems, and aims to provide a street light that can emit illumination light from a high position while reducing the height at which the solar panel is placed. [Means for solving the problem]

[0006] In order to solve the above problem, the street light of the present invention comprises a first power generating unit and a second power generating unit that generate electricity using sunlight, a support unit that holds the first power generating unit and the second power generating unit, and an illumination unit that emits illumination light, wherein the first power generating unit and the second power generating unit have a horizontal length greater than their vertical length, the first power generating unit is positioned below and forward of the second power generating unit, the first power generating unit and the second power generating unit are positioned at different horizontal positions, a first blank area is formed to the side of the first power generating unit and below the second power generating unit, and a second blank area is formed to the side of the second power generating unit and above the first power generating unit, and the illumination unit is positioned in the first blank area or the second blank area.

[0007] In such a street light of the present invention, the first power generating unit is positioned below and forward of the second power generating unit, and their horizontal positions are different, and the lighting unit is positioned in the first blank area or the second blank area provided to the side of the first power generating unit and the second power generating unit, so it is possible to emit illumination light from a high position while keeping the height of the solar panel placement low.

[0008] In one aspect of the present invention, the illumination unit is attached to the first power generation unit or the second power generation unit.

[0009] In one aspect of the present invention, the illumination unit is attached so as to be rotatable in at least two axial directions, making it possible to change the irradiation direction.

[0010] In one aspect of the present invention, the upper end of the first power generating section is located higher than the lower end of the second power generating section.

[0011] In one aspect of the present invention, the first power generating section and the second power generating section are arranged such that the power generating surfaces are inclined at an angle in the range of 50 degrees to 70 degrees with respect to the horizontal direction.

[0012] In one aspect of the present invention, the device further includes a power storage unit that stores the power generated by the first power generation unit and the second power generation unit and supplies the power to the illumination unit. [Effects of the Invention]

[0013] The present invention can provide a street light that can emit illumination light from a high position while suppressing the height at which the solar panel is arranged. [Brief explanation of the drawings]

[0014] [Figure 1] 1A and 1B are schematic perspective views showing an overview of a street light 100 according to a first embodiment, where FIG. 1A is a view seen obliquely from the front, and FIG. 1B is a view seen obliquely from the rear. [Figure 2] FIG. 1 is a schematic perspective view showing an enlarged view of the upper part of the street light 100, as viewed obliquely from the front. [Figure 3] FIG. 1 is a schematic perspective view showing an enlarged view of the upper part of the street light 100, as viewed obliquely from behind. [Figure 4] FIG. 2 is a schematic front view showing an enlarged view of the upper part of the street light 100. [Figure 5] FIG. 2 is a schematic rear view showing an enlarged view of the upper part of the street light 100. [Figure 6] FIG. 2 is a schematic side view showing an enlarged view of the upper part of the street light 100. [Figure 7] FIG. 2 is a schematic perspective view showing an enlarged view of the illumination unit 40a. [Figure 8] FIG. 10 is a schematic perspective view showing a state in which the irradiation directions of the illumination units 40a and 40b are changed. [Figure 9] 9A and 9B are schematic perspective views showing an enlarged view of the upper part of a street light 100 according to a second embodiment, where FIG. 9A shows an example in which lighting units 40a and 40b are attached to a power generation unit 30a, and FIG. 9B shows an example in which lighting units 40a and 40b are attached to a power generation unit 30b. DETAILED DESCRIPTION OF THE INVENTION

[0015] (First embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The same or equivalent components, members, and processes shown in each drawing will be denoted by the same reference numerals, and redundant explanations will be omitted where appropriate. FIG. 1 is a schematic perspective view showing an overview of a street light 100 according to this embodiment, with FIG. 1(a) being a view from diagonally forward and FIG. 1(b) being a view from diagonally rear. As shown in FIGS. 1(a) and 1(b), the street light 100 includes a base 10, a pole 20, power generation units 30a and 30b, lighting units 40a and 40b, and a power storage unit 50. The power generation units 30a and 30b are fixed to the pole 20 by arms 21a and 21b.

[0016] The base 10 is provided at the bottom end of the street light 100 and holds the pole 20 in an upright position. Most of the base 10 is buried underground, and only the top surface of the base 10 is exposed after the street light 100 is installed. The specific structure of the base 10 is not limited, but a structure in which a concrete pole has a metal top surface can be used. Furthermore, pipes for drawing electrical wiring and communication wiring may be buried inside the base 10 as needed.

[0017] The support column 20 stands vertically upward from the base 10 and is a portion that holds the power generation units 30a, 30b and the power storage unit 50. The specific shape and structure of the support column 20 are not limited, but it may have a structure in which multiple cylinders are connected. Also, a cavity may be provided inside the support column 20, and wiring (not shown) that electrically connects the power generation units 30a, 30b and the power storage unit 50 may be housed in the cavity. Also, electronic devices such as an imaging device (not shown) and a communication device (not shown) that are driven by power from the power storage unit 50 may be attached to the support column 20.

[0018] The power generation units 30a and 30b are attached to the support unit 20 and generate electricity using sunlight. The electricity generated by the power generation units 30a and 30b is supplied to the power storage unit 50 via wiring (not shown) and stored in the power storage unit 50. Although FIG. 1 shows an example in which the power generation units 30a and 30b are rectangular, the shape is not limited thereto. Furthermore, lighting units 40a and 40b are attached to the power generation units 30a and 30b, respectively. The power generation unit 30a corresponds to the first power generation unit in the present invention, and the power generation unit 30b corresponds to the second power generation unit in the present invention.

[0019] The power generation units 30a and 30b are oriented such that their horizontal (lateral) lengths are greater than their heights. Furthermore, the power generation unit 30a is positioned lower and forward than the power generation unit 30b. Furthermore, the power generation units 30a and 30b are positioned at different horizontal positions. This ensures that a space is provided to the side of the power generation unit 30a and below the power generation unit 30b as a first blank area W1. Furthermore, a space is provided to the side of the power generation unit 30b and above the power generation unit 30a as a second blank area W2. While FIG. 1 shows an example in which the power generation units 30a and 30b have the same height and horizontal lengths, they may have different height or horizontal lengths.

[0020] The illumination units 40a, 40b are attached to the power generation units 30a, 30b and emit illumination light using power supplied from the power storage unit 50. As described below, the illumination units 40a, 40b are preferably attached so as to be rotatable in at least two axial directions so as to change the direction of illumination, and more preferably so as to be rotatable in three axial directions. In the example shown in FIG. 1, the illumination unit 40a is attached to the upper part of the power generation unit 30a in a front view and is disposed in the second blank area W2. The illumination unit 40b is attached to the lower part of the power generation unit 30b in a front view and is disposed in the first blank area W1. Although FIG. 1 shows an example in which the illumination units 40a, 40b are attached to the power generation units 30a, 30b, they may also be attached to the support unit 20 using a fixing member and disposed in the first blank area W1 or the second blank area W2.

[0021] The power storage unit 50 is a component that stores the power generated by the power generation units 30a and 30b and supplies power to the lighting units 40a and 40b. If the street light 100 is equipped with other electronic devices, the power storage unit 50 may also supply power to the other electronic devices. The specific configuration of the power storage unit 50 is not limited, and a conventionally known secondary battery may be used. Furthermore, the type and arrangement of the secondary battery are not limited, and lithium-ion batteries, all-solid-state batteries, lead-acid batteries, etc. may be used. Furthermore, secondary batteries used in electric vehicles or hybrid vehicles may be reused.

[0022] 1 shows an example in which a secondary battery is housed in a housing case as the power storage unit 50 and attached to the support unit 20, but the location where the power storage unit 50 is provided is not limited, and the power storage unit 50 may be housed inside the support unit 20 or the base unit 10. Furthermore, the power storage unit 50 may be provided with a circuit board for controlling charging and discharging, or with a control unit for controlling the operation of the lighting units 40a, 40b and other electronic devices.

[0023] The arm portions 21a and 21b extend from the support column 20 and support the power generation units 30a and 30b. In the example shown in FIG. 1, the arm portion 21a is attached to the support column 20 below the arm portion 21b, with the arm portion 21a extending forward and the arm portion 21b extending upward. The arm portions 21a and 21b also extend in directions separating them from each other to the left and right. The relative positional relationship between the power generation units 30a and 30b is maintained by the extension direction and length of the arm portions 21a and 21b. Alternatively, a cavity may be provided inside the arm portions 21a and 21b, and wiring (not shown) that electrically connects the power generation units 30a and 30b to the power storage unit 50 may be housed in the cavity.

[0024] As shown in Figures 1(a) and 1(b), by arranging the power generation units 30a and 30b horizontally, it is possible to achieve a low profile while ensuring the area of ​​the power generation units 30a and 30b. Furthermore, by arranging the power generation units 30a and 30b at different horizontal positions to create a first blank area W1 and a second blank area W2, it is possible to ensure space for arranging the illumination units 40a and 40b, and by elevating the positions of the illumination units 40a and 40b, it is possible to expand the illumination range of the illumination light. Furthermore, by positioning the power generation unit 30a below and forward of the power generation unit 30b, it is possible to prevent the shadows of the illumination units 40a and 40b from falling on the power generation units 30a and 30b, even if the illumination units 40a and 40b are arranged in the first blank area W1 or the second blank area W2.

[0025] Fig. 2 is a schematic perspective view showing an enlarged view of the upper part of the street light 100, as viewed obliquely from the front. Fig. 3 is a schematic perspective view showing an enlarged view of the upper part of the street light 100, as viewed obliquely from the rear. As shown in Figs. 2 and 3, the power generation units 30a and 30b have solar panels 31a and 31b and frames 32a and 32b, respectively. Furthermore, the arm units 21a and 21b have holding bars 22a and 22b and holding brackets 23a and 23b.

[0026] The solar panels 31a, 31b are disposed in front of the power generation units 30a, 30b and generate electricity using received light. The specific configuration of the solar panels 31a, 31b is not limited, and conventionally known materials such as monocrystalline silicon, polycrystalline silicon, amorphous silicon, CIGS, dye-sensitized, organic semiconductor, and perovskite can be used. The surfaces of the solar panels 31a, 31b may be smooth glass surfaces or may be rough surfaces with fine irregularities that scatter light. Wiring (not shown) and connectors extend from the solar panels 31a, 31b to transmit the generated power to the power storage unit 50. The types of wiring and connectors are not limited, and conventionally known MC4 connectors, etc., can be used.

[0027] The frames 32a, 32b support the solar panels 31a, 31b on the front side and are portions to which the holding brackets 23a, 23b are attached on the back side. Furthermore, the lighting units 40a, 40b may be attached to the outer circumferential side surfaces of the frames 32a, 32b. The frames 32a, 32b may be provided with a plate-shaped back surface, and a space may be provided between the frames 32a, 32b and the solar panels 31a, 31b to accommodate wiring.

[0028] The holding bars 22a and 22b branch off from the tips of the arms 21a and 21b, and have holding brackets 23a and 23b attached to both ends. 2 and 3 show an example of holding bars 22a and 22b having a cylindrical shape extending horizontally, but the shape and structure are not limited thereto.

[0029] The holding brackets 23a and 23b are attached to both ends of the holding bars 22a and 22b and are used to hold the rear surfaces of the frames 32a and 32b. The holding brackets 23a and 23b are fixed at a predetermined angle relative to the horizontal direction around the holding bars 22a and 22b, thereby maintaining the tilt angle of the power generation units 30a and 30b.

[0030] FIG. 4 is a schematic front view showing an enlarged view of the upper part of the street light 100. FIG. 5 is a schematic rear view showing an enlarged view of the upper part of the street light 100. As shown in FIGS. 4 and 5, because the arm portions 21a, 21b extend in the left-right direction from the support portion 20, the lateral center positions of the power generation units 30a, 30b are offset in the left-right direction from the support portion 20, and their positions in the horizontal direction are different. As a result, a first blank area W1 is provided to the side of the power generation unit 30a and below the power generation unit 30b in a front view. Furthermore, a second blank area W2 is provided to the side of the power generation unit 30b and above the power generation unit 30a in a front view.

[0031] Furthermore, the illumination unit 40a is attached to the outer peripheral side surface of the frame 32a and is disposed in the second blank area W2. This allows the illumination unit 40a to be disposed at a high position to expand the illumination range, while preventing the power generation amount from being reduced due to the shadow of the illumination unit 40a being cast on the power generation unit 30b. Furthermore, the illumination unit 40b is attached to the outer peripheral side surface of the frame 32b and is disposed in the first blank area W1. This allows the illumination unit 40b to be disposed at a high position to expand the illumination range, while preventing the power generation amount from being reduced due to the shadow of the illumination unit 40b being cast on the power generation unit 30a. Furthermore, because the illumination units 40a and 40b are disposed in the space secured by the first blank area W1 or the second blank area W2, the illumination direction of the illumination light can be freely selected by rotating their orientation.

[0032] Fig. 6 is a schematic side view showing an enlarged view of the upper part of the street light 100. As shown in Fig. 6, power generation unit 30a is held by arm unit 21a in front of support pole 20, and power generation unit 30b is held by arm unit 21b above the upper end of support pole 20. Power generation units 30a and 30b are held by holding brackets 23a and 23b, respectively, so that the power generation surfaces of solar panels 31a and 31b are inclined at an angle θ with respect to the horizontal. The upper end of power generation unit 30a is located higher than the lower end of power generation unit 30b by a height H, and the two are arranged with a horizontal distance D therebetween.

[0033] The inclination angle θ between the power generation surface of each of the power generation units 30a and 30b and the horizontal direction is preferably between 50 degrees and 70 degrees, more preferably between 55 degrees and 65 degrees. This range of inclination angle θ can prevent damage to the solar panels 31a and 31b due to impact from hailstones falling from the sky during a hailstorm. Furthermore, the inclination angle θ of the power generation surface facilitates the sliding of debris, reducing the possibility of the solar panels 31a and 31b being covered by snow or fallen leaves, causing power generation to stop. While FIG. 6 shows an example in which the inclination angles θ of the power generation units 30a and 30b are the same, the inclination angle θ1 of the power generation unit 30a and the inclination angle θ2 of the power generation unit 30b may be different.

[0034] Furthermore, the difference in height H between the upper end of power generation unit 30a and the lower end of power generation unit 30b is preferably in the range of 1 cm to 20 cm, more preferably 1 cm to 10 cm. By positioning the upper end of power generation unit 30a at height H higher than the lower end of power generation unit 30b, wind noise generated when air flows between power generation units 30a and 30b can be suppressed, thereby reducing noise in the surrounding environment.

[0035] Furthermore, the horizontal distance D between the upper end of power generation unit 30a and the lower end of power generation unit 30b is preferably in the range of 1 cm to 50 cm, and more preferably in the range of 3 cm to 20 cm. By separating the upper end of power generation unit 30a and the lower end of power generation unit 30b by distance D, air can easily flow between power generation units 30a and 30b. This reduces the wind pressure received by the entire power generation units 30a and 30b during strong winds, preventing the street light 100 from collapsing.

[0036] Furthermore, it is preferable that the difference in height H between the upper end of power generating section 30a and the lower end of power generating section 30b and the distance D satisfy the relationship D > H. This prevents the shadow of power generating section 30a, which is located in front, from falling on the power generating surface of power generating section 30b, thereby preventing a decrease in the amount of power generated by power generating section 30b.

[0037] Fig. 7 is a schematic perspective view showing an enlarged view of the illumination unit 40a. As shown in Fig. 7, the illumination unit 40a has a case 41a, an irradiation surface 42a, a holder 43a, and rotation shafts 44a to 46a. The illumination unit 40b also has a case 41b, an irradiation surface 42b, a holder 43b, and rotation shafts 44b to 46b, but these are not shown in the figure because they are similar to the illumination unit 40a. Although Fig. 7 shows an example in which two illumination units 40a are provided, the number and arrangement of the illumination units 40a are not limited.

[0038] The case 41a is a housing that houses a light-emitting unit (not shown) and wiring inside, and has an opening on one side where the irradiation surface unit 42a is disposed. While FIG. 7 shows an example of the case 41a as a roughly rectangular parallelepiped that is elongated in the longitudinal direction, the shape and structure are not limited. The material that constitutes the case 41a is not limited, and resin or metal can be used. The light-emitting unit housed in the case 41a is also not limited, and an incandescent bulb, halogen light, LED, organic EL, etc. can be used, with LED being preferable from the viewpoints of size, weight, power saving, and weather resistance.

[0039] The irradiation surface 42a is made of a material that transmits light from the light-emitting unit, and is a portion that covers the opening of the case 41a. The configuration of the irradiation surface 42a is not limited, and as long as the desired light distribution can be achieved, it may be a smooth surface that transmits light in a straight line, or a scattering surface that scatters light. The irradiation surface 42a and the case 41a are preferably attached liquid-tightly using a packing member or the like.

[0040] The holder 43a is provided at one end of the case 41a and is rotatably attached to the rotating shaft 44a. Wiring (not shown) for supplying power to the inside of the case 41a is arranged inside or outside the holder 43a. The holder 43a may also be provided with a light on / off button for controlling the turning on and off of the illumination unit 40a. The holder 43a may also be provided with an illuminance meter and a control circuit that turns on the illumination unit 40a when the ambient illuminance falls below a threshold and turns off the illumination unit 40a when the ambient illuminance rises above the threshold.

[0041] The rotating shafts 44a to 46a are parts of a two-axis rotation mechanism that can rotate around two axes. The rotating shaft 44a holds the holder 43a so that it can rotate around one axis. The rotating shaft 45a is provided between the rotating shafts 44a and 46a and rotatably holds both of them. The rotating shaft 46a is attached to the frame 32a and holds the rotating shaft 45a. As a result, the combination of the rotating shafts 44a to 46a forms a multi-joint rotation mechanism, and the case 41a, the irradiation surface 42a, and the holder 43a can be rotated in any direction to select the direction of light irradiation by the lighting unit 40a.

[0042] Figure 8 is a schematic perspective view showing the state in which the irradiation direction of the illumination units 40a, 40b has been changed. As shown in Figure 8, the illumination units 40a, 40b are attached so that they can rotate freely in at least two axial directions using rotation shafts 44a-46a and 44b-46b, allowing the irradiation surfaces 42a, 42b to be oriented in any direction. Furthermore, because the illumination units 40a, 40b are disposed in the first blank area W1 and the second blank area W2, respectively, it is easy to change their orientation so as not to interfere with the power generation units 30a, 30b.

[0043] As described above, in the street light 100 of this embodiment, the power generation unit 30a is positioned below and forward of the power generation unit 30b, and their horizontal positions are different, and the lighting units 40a, 40b are positioned in the first blank area W1 or the second blank area W2 provided to the side of the power generation unit 30a and the power generation unit 30b, so that it is possible to emit illumination light from a high position while suppressing the placement height of the solar panels 31a, 31b.

[0044] (Second embodiment) Next, a second embodiment of the present invention will be described with reference to Fig. 9. Description of content that overlaps with the first embodiment will be omitted. Fig. 9 is a schematic perspective view showing an enlarged view of the upper part of a street light 100 according to this embodiment, Fig. 9(a) shows an example in which illumination units 40a and 40b are attached to a power generation unit 30a, and Fig. 9(b) shows an example in which illumination units 40a and 40b are attached to a power generation unit 30b.

[0045] In the example shown in FIG. 9(a), the illumination unit 40a is attached to the upper side surface of the frame 32a and is disposed in the second blank area W2. The illumination unit 40b is attached to the lower side surface of the frame 32a and is disposed below the power generation unit 30a. This allows the illumination unit 40a to rotate freely within the space of the second blank area W2, allowing the orientation of the irradiation surface 42a to be freely set. The illumination unit 40b is also rotatable within the space below the power generation unit 30a, allowing the orientation of the irradiation surface 42b to be freely set. Therefore, the orientations of the illumination units 40a and 40b can be easily changed so as not to interfere with the power generation units 30a and 30b.

[0046] In the example shown in FIG. 9(b), the illumination unit 40a is attached to the upper side surface of the frame 32b and is positioned above the power generation unit 30b. The illumination unit 40b is attached to the lower side surface of the frame 32b and is positioned in the first blank area W1. This allows the illumination unit 40a to rotate freely within the space above the power generation unit 30b, allowing the orientation of the irradiation surface 42a to be freely set. The illumination unit 40b is also rotatable within the space of the first blank area W1, allowing the orientation of the irradiation surface 42b to be freely set. Therefore, the orientations of the illumination units 40a and 40b can be easily changed so as not to interfere with the power generation units 30a and 30b.

[0047] In the street light 100 of this embodiment, the power generation unit 30a is positioned below and forward of the power generation unit 30b, and their horizontal positions are different, and the lighting units 40a, 40b are positioned in the first blank area W1 or the second blank area W2 provided to the side of the power generation unit 30a and the power generation unit 30b, so it is possible to emit illumination light from a high position while reducing the placement height of the solar panels 31a, 31b.

[0048] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0049] 100...Street light 10...Base 20…Strut part 21a, 21b...Arm section 22a, 22b...Retaining bars 23a, 23b...Retaining bracket 30a, 30b... Power generation section 31a, 31b...Solar panels 32a, 32b...frame 40a, 40b...Lighting section 41a, 41b…Case 42a, 42b...irradiation surface part 43a, 43b...holding part 44a to 46a, 44b to 46b...Rotating shaft portion 50...Storage unit

Claims

1. a first power generation unit and a second power generation unit that generate electricity using sunlight; a support portion that holds the first power generating unit and the second power generating unit; an illumination unit that emits illumination light, the first power generation unit and the second power generation unit have a horizontal length greater than a height length, the first power generation unit is disposed below and forward of the second power generation unit, the first power generation unit and the second power generation unit are located at different positions in the horizontal direction, a first blank area is formed to the side of the first power generation unit and below the second power generation unit; a second blank area is formed to the side of the second power generation unit and above the first power generation unit; The street light is characterized in that the lighting unit is arranged in the first blank area or the second blank area.

2. 2. A street light according to claim 1, The street light is characterized in that the lighting unit is attached to the first power generation unit or the second power generation unit.

3. 2. A street light according to claim 1, The street light is characterized in that the lighting unit is attached so as to be rotatable in at least two axial directions, making it possible to change the direction of illumination.

4. 2. A street light according to claim 1, A street light, characterized in that an upper end of the first power generating unit is located higher than a lower end of the second power generating unit.

5. 2. A street light according to claim 1, The street light is characterized in that the first power generating unit and the second power generating unit are arranged such that their power generating surfaces are inclined at an angle of 50 degrees or more and 70 degrees or less with respect to the horizontal direction.

6. 6. A street light according to any one of claims 1 to 5, A street light comprising: a power storage unit that stores the power generated by the first power generation unit and the second power generation unit and supplies power to the lighting unit.

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