A light tracking solar street light

Abstract

The present invention discloses a light tracking solar street light, which involves the technical field of solar street lights, including a lamp post and a street light. A supporting platform is installed on the top of the lamp post, and a solar panel is arranged on the supporting platform. The solar panel includes a solar panel, a supporting frame, a back plate and a transparent plate. The back of the solar panel is fixed to the supporting frame, and the supporting frame is connected to the back plate by bolts. The lamp post and the solar panel are connected in a fixed manner, so that the solar panel is in a fixed state and cannot move, so as to avoid the high risk of falling caused by the movement of the solar panel. The solar cell is set as a hemispherical surface, and the area of ​​the solar cell is increased under the same plane to increase the amount of light received. Multiple beams of sunlight are concentrated in a focusing tube through a light tracking component, and then after total reflection in the focusing tube, they are fully irradiated on the solar cell from the bottom of the focusing tube to avoid the problem of shading and affect the area of ​​light receiving.

Description

Technical Field

[0001] The present invention relates to the technical field of solar street lamps, and in particular to a light tracking solar street lamp. Background Art

[0002] Working principle of solar street light: During the day, under the control of the controller, the solar panel absorbs the sunlight and converts it into electrical energy. During the day, the solar cell module charges the battery pack, and at night, the battery pack provides electricity to the light source to realize the lighting function. The DC controller can ensure that the battery pack is not damaged due to overcharge or over discharge, and it also has functions such as light control, time control, temperature compensation, lightning protection and reverse polarity protection.

[0003] In order to allow the solar cell modules to receive as much solar radiation as possible in a year, the solar cell modules are usually selected at an inclination angle. However, due to the revolution and rotation, the angle of the sun is constantly changing in a day or even a year, and the direction of the solar panels of the solar street lights on the market is mostly fixed, resulting in insufficient utilization and absorption of solar energy, reducing efficiency. Summary of the invention

[0004] The object of the present invention is to provide a light-tracking solar street light, which has a solar cell arranged as a hemispherical surface, increasing the area of ​​the solar cell in the same plane to increase the amount of light received, focusing multiple beams of sunlight in a focusing tube through a light-tracking component, and then irradiating the solar cell from the bottom of the focusing tube after total reflection in the focusing tube, comprehensively irradiating the solar cell, avoiding the problem of shading and affecting the area of ​​light reception, so as to solve the above-mentioned problems.

[0005] To achieve the above object, the present invention provides the following technical solutions: a light tracking solar street light, comprising a lamp post and a street light, a supporting platform is installed on the top of the lamp post, a solar panel is arranged on the supporting platform, the solar panel comprises a solar panel, a supporting frame, a back plate and a transparent plate, the back of the solar panel is fixed to the supporting frame, the supporting frame is connected to the back plate by bolts, and solar cells are distributed on the solar panel in a matrix and connected in series;

[0006] The transparent plate is arranged above the solar panel, and light tracking components are also distributed on the transparent plate in a matrix, and photoresistors are connected to the light tracking components. Each light tracking component is arranged in a one-to-one correspondence with each solar cell, and the light tracking component is controlled by the photoresistor. After the photoresistor senses light, it drives the light tracking component to perform a circular motion at an angle perpendicular to the sunlight;

[0007] A focusing tube is also provided on the solar panel between the light tracking component and the solar cell. The sunlight is focused in the focusing tube by the light tracking component and then irradiated onto the solar cell.

[0008] Preferably, reinforcing plates are welded on the peripheral surface of the supporting platform, and reinforcing rods connected to the back plate are arranged on each reinforcing plate.

[0009] Preferably, the solar cell is a hemispherical structure, and the transparent plate is connected to the solar panel.

[0010] Preferably, each of the light tracking components comprises a support bracket fixed on the transparent plate, the two support brackets are connected to the frame via a rotating shaft, and the frame and the transparent plate are connected via a telescopic cylinder for the frame to rotate around the rotating shaft;

[0011] A symmetrical first semicircular plate and a second semicircular plate are fixed at both ends of the frame, and semicircular grooves are provided on the opposite surfaces of the first semicircular plate and the second semicircular plate. The rods at both ends of the convex lens are respectively inserted into the semicircular grooves of the first semicircular plate and the second semicircular plate, and the rods of the convex lens rotate synchronously around the semicircular grooves on both sides to ensure that the plane where the convex lens is located is perpendicular to the sunlight, and the focusing point of the sunlight passing through the convex lens is in the focusing tube.

[0012] Preferably, the rotation of the rod body of the convex lens is driven by a rotating assembly, and the rotating assembly includes a positioning shaft rotating on a supporting bracket, one end of a connecting rod is sleeved on the positioning shaft, the other end of the connecting rod is fixed to the axis of the convex lens, the positioning shaft is connected to the axis of a micro motor, and the micro motor drives the positioning shaft and the connecting rod to rotate, so as to move the convex lens around the semicircular groove, and the convex lens is always perpendicular to the connecting rod during the movement.

[0013] Preferably, the distance between the convex lens and the focusing point in the focusing tube is the same during the movement of the convex lens along the semicircular groove.

[0014] Preferably, the extension line of the rotating shaft overlaps with the focusing point in the focusing tube, and the top opening of the focusing tube is rounded.

[0015] Preferably, the axis of the focusing tube overlaps with the center of the solar cell.

[0016] Technical effects and advantages of the present invention:

[0017] 1. The lamp post and the solar panel are connected in a fixed way, so that the solar panel is fixed and cannot move, to avoid the high risk of falling caused by the movement of the solar panel.

[0018] 2. The solar cell is set to be a hemispherical surface, and the area of ​​the solar cell is increased on the same plane to increase the amount of light received and avoid the problem of self-shading of the hemispherical solar cell under oblique sunlight. Multiple beams of sunlight are focused in the focusing tube through the light tracking component, and then after total reflection in the focusing tube, they are irradiated from the bottom of the focusing tube to the solar cell. The emission path of sunlight is controlled by the focusing tube to fully irradiate the solar cell, avoiding the problem of shading and affecting the area of ​​light receiving. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the overall structure diagram of the street lamp of the present invention;

[0020] Figure 2 This is a schematic diagram of a supporting platform supporting a solar panel according to the present invention;

[0021] Figure 3 This is a distribution diagram of the solar cell matrix of the present invention;

[0022] Figure 4 An exploded view of a solar panel of the present invention;

[0023] Figure 5 A connection diagram of the light tracking component and the solar panel of the present invention;

[0024] Figure 6 The convex lens of the present invention rotates around the rotation axis and the semicircular groove to be used in the light chasing state Figure 1 ;

[0025] Figure 7 The convex lens of the present invention rotates around the rotation axis and the semicircular groove to be used in the light chasing state Figure 2 ;

[0026] Figure 8 It is a structural diagram of the rotating assembly of the present invention;

[0027] Fig. 9 The concentrator of the present invention reflects light to the solar cell. Figure 1 ;

[0028] Fig.10 The concentrator of the present invention reflects light to the solar cell. Figure 2 ;

[0029] Fig.11 It is a schematic diagram of light reflection in the focusing tube of the present invention.

[0030] In the figure:

[0031] 1. Lamp post; 2. Street light; 3. Supporting platform; 31. Strengthening rod; 4. Light tracking component; 41. Supporting bracket; 42. Frame; 43. First semi-circular arc plate; 44. Second semi-circular arc plate; 45. Convex lens; 46. Semicircular groove; 47. Rotating shaft; 5. Focusing tube; 6. Solar panel; 61. Solar panel; 611. Solar cell; 62. Support frame; 63. Back plate; 64. Transparent plate; 7. Photoresistor; 8. Rotating assembly; 81. Positioning shaft; 82. Connecting rod; 83. Micro motor. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In order to make solar panels maximize the use of light, photoresistors and angle adjustment devices are combined to allow solar panels to adjust their angles according to the light to achieve maximum resource utilization. Solar cell modules that can rotate with the sun require horizontal and vertical rotating parts to drive them. Then, the movable solar panels are installed on street lamps to achieve the light-chasing action. The height of street lamps is 6-12m and they are located on both sides of the road. Pedestrians often walk under the street lamps. The movable solar cells installed on street lamps have a higher risk of falling than solar panels fixed on street lamps, and the degree of danger is greater.

[0034] Example 1: Reference Figure 1-Figure 4 In order to solve the above problems, a light tracking solar street light is provided, comprising a lamp post 1 and a street light 2, the street light 2 is mounted on the lamp post 1, a supporting platform 3 is mounted on the top of the lamp post 1, a solar panel 6 is arranged on the supporting platform 3, the solar panel 6 comprises a solar panel 61, a supporting frame 62, a back plate 63 and a transparent plate 64, the back of the solar panel 61 is fixed to the supporting frame 62, the supporting frame 62 is connected to the back plate 63 by bolts, and solar cells 611 are distributed on the solar panel 61 in a matrix and connected in series;

[0035] Without changing the fixing method between the lamp post 1 and the solar panel 6, the solar panel 6 is kept in a fixed state and cannot move, so as to avoid a high risk of falling caused by the movement of the solar panel 6. The light tracking action is performed through the light tracking component 4 on the transparent plate 64, and the overall activity is replaced by local activity. At the same time, the light tracking component 4 is lighter than the entire solar panel 6, and the danger of the light tracking component 4 falling is much smaller than the danger of the entire solar panel 6 falling.

[0036] A reinforcing plate is welded on the side of the supporting platform 3 , and a reinforcing rod 31 connected to the back plate 63 is arranged on each reinforcing plate, so that the connection strength between the solar panel 6 and the back plate 6 is improved by the arranged reinforcing rod 31 .

[0037] The solar cell 611 is a hemispherical structure, and the transparent plate 64 is connected to the solar panel 61 .

[0038] Solar cell 611 is different from the existing planar solar cell 611 in that it has a hemispherical shell designed to maximize light absorption and angle coverage. Compared with the flat structure of the hemispherical photovoltaic cell design, the hemispherical shell structure of solar cell 611 has significant advantages in light absorption, and its light absorption is increased for both TE polarized and TM polarized light, while having a wider angle coverage range, which is particularly beneficial for applications that require flexible light capture. By setting it as a hemispherical surface, the area of ​​solar cell 611 is increased in the same plane to increase the amount of light received.

[0039] Example 2: Reference Figure 2 , Figure 5-Figure 11 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment. During the implementation of the first embodiment, it is found that although the hemispherical solar cell 611 increases the amount of light absorption, due to the convex characteristics of the hemispherical solar cell 611 itself, such as in the morning and afternoon, when the sunlight is oblique, the oblique sunlight can only shine on a part of the hemispherical solar cell 611, and the backlight surface cannot be illuminated by the light because it is blocked by itself, thereby wasting this part of the light energy.

[0040] In order to solve the above problem, this embodiment is provided with a light tracing component 4 capable of tracking the sun. Since the light tracing component 4 continuously adjusts its position following the ecliptic path, the light beam is irradiated on the light tracing component 4 to realize fixed-point focusing. With the structure of the focusing tube 5, the concentrated light beam is guided to irradiate the hemispherical solar cell 611 after multiple reflections to change the angle of sunlight. Since the focusing tube 5 is provided directly above the solar cell 611, the light reflected by the focusing tube 5 will also be emitted from directly above the solar cell 611, maximizing the irradiation on the solar cell 611, thereby avoiding the problem of the raised solar cell 611 being blocked by itself under oblique sunlight in the prior art.

[0041] A focusing tube 5 is also provided on the solar panel 61 between the light tracking component 4 and the solar cell 611 . Sunlight is focused in the focusing tube 5 by the light tracking component 4 and then irradiated onto the solar cell 611 .

[0042] During the light tracking process, the light tracking component 4 can be adjusted according to the sun's ecliptic to ensure that the light tracking component 4 keeps most of the sunlight focused in the focusing tube 5 to increase the light intensity.

[0043] The transparent plate 64 is arranged above the solar panel 61, and the transparent plate 64 is also provided with light tracking components 4 in a matrix form, each light tracking component 4 is arranged one-to-one corresponding to each solar cell 611, and a photoresistor 7 is installed on the light tracking component 4, and the light tracking component 4 is controlled by the photoresistor 7, and the photoresistor 7 drives the light tracking component 4 to perform circular telemotion at an angle perpendicular to the sunlight after sensing light;

[0044] In addition, to avoid the problem of hemispherical solar cell 611 being shielded by itself under oblique sunlight, multiple beams of sunlight are concentrated in the focusing tube 5 through the light tracking component 4, and then irradiated on the solar cell 611 from the bottom of the focusing tube 5 after total reflection in the focusing tube 5, and the top opening of the focusing tube 5 is rounded. The axis of the focusing tube 5 overlaps with the center of the solar cell 611. Since the focusing tube 5 is located directly above the center of the solar cell 611, the direction of the light beam outlet is changed after being concentrated by the focusing tube 5;

[0045] The rounded corners are used to increase the diameter of the focusing tube 5, and the internal channel of the focusing tube 5 is in the shape of a truncated cone, wherein the focusing tube 5 with symmetrical rounded corners has the largest diameter, while the focusing tube 5 with a smaller diameter than the rounded corners will project the sunlight after multiple reflections onto the solar cell 611, so that the concentrated sunlight can be emitted from the top of the solar cell 611, so that no matter what direction the sunlight is in, the light tracking component 4 will focus the sunlight on the focusing tube 5, and control the emission path of the sunlight through the focusing tube 5 to fully irradiate the solar cell 611, avoiding the problem of shading and affecting the area of ​​light receiving.

[0046] The inner channel of the focusing tube 5 is coated with a reflective coating, which can reflect the light entering the focusing tube 5 away to reduce light loss.

[0047] Each light tracking component 4 includes a support bracket 41 fixed on a transparent plate 64. The two support brackets 41 are connected to the frame 42 via a rotating shaft 47. The frame 42 and the transparent plate 64 are connected via a telescopic cylinder for rotating the frame 42 around the rotating shaft 47. The transparent plate 64 can also transmit light, and the solar cell 611 can continue to receive the remaining sunlight.

[0048] A symmetrical first semicircular plate 43 and a second semicircular plate 44 are fixed at both ends of the frame 42. Semicircular grooves 46 are provided on the opposite surfaces of the first semicircular plate 43 and the second semicircular plate 44. The rods at both ends of the convex lens 45 are respectively inserted into the semicircular grooves 46 of the first semicircular plate 43 and the second semicircular plate 44. The rods of the convex lens 45 rotate synchronously around the semicircular grooves 46 on both sides to ensure that the plane where the convex lens 45 is located is perpendicular to the sunlight, and the focusing point of the sunlight passing through the convex lens 45 is in the focusing tube 5.

[0049] The rotation of the rod body of the convex lens 45 is driven by the rotating assembly 8, and the rotating assembly 8 includes a positioning shaft 81 rotating on the support bracket 41, and one end of the connecting rod 82 is sleeved on the positioning shaft 81, and the other end of the connecting rod 82 is fixed to the axis of the convex lens 45. The positioning shaft 81 is connected to the axis of a micro motor 83, and the micro motor 83 drives the positioning shaft 81 and the connecting rod 82 to rotate, so as to move the convex lens 45 around the semicircular groove 46, and the convex lens 45 is always perpendicular to the connecting rod 82 during the movement.

[0050] The photoresistor 7 is mounted on the convex lens 45. The direction of sunlight sensed by the photoresistor 7 rotates. By continuously adjusting the angle of the convex lens 45, the photoresistor 7 is always facing the sun, thereby enabling the convex lens 45 to track the position of the sun. When the convex lens 45 moves along the semicircular groove 46, the distance between the convex lens 45 and the focusing point in the focusing tube 5 is the same, and the extension line of the rotating shaft 47 overlaps with the focusing point in the focusing tube 5.

[0051] By overlapping the rotating shaft 47 with the focal point in the focusing tube 5, the frame 42 rotates and the convex lens 45 follows the rotation, and the focal point always remains stationary. Similarly, the setting of the first semi-arc plate 43 and the second semi-arc plate 44 and the connecting rod 82 that allows the convex lens 45 to slide around the semicircular groove 46 through the positioning axis 81 also ensures that the focal point always remains stationary during the rotation of the convex lens 45 in the semicircular groove 46, thereby ensuring the fixed point of the focal point.

[0052] The telescopic cylinder is used to rotate the frame 42 around the rotation axis 47. The purpose is to adjust the apparent motion trajectory of the sun in the sky as the earth revolves around the sun throughout the year. The ecliptic is a large circle on the celestial sphere, representing the projection of the earth's orbit on the celestial sphere. Since the earth's rotation axis is not perpendicular to the revolution plane, there is an angle between the ecliptic plane and the equatorial plane, and this angle is about 23.5 degrees. The ecliptic meridian runs from 0 degrees to 360 degrees and intersects the equatorial plane at the vernal equinox and the autumnal equinox. In the process of rotating the frame 42 around the rotation axis 47 through the telescopic cylinder, the different ecliptic angles of the sun in the four seasons of the year can be adjusted.

[0053] The micro motor 83 drives the positioning shaft 81 and the connecting rod 82 to rotate, ensuring that the convex lens 45 always rotates with the sun throughout the day to achieve fixed-point focusing. No matter what time of the year it is, the sunlight shining on the convex lens 45 can be guided into the focusing tube 5 through the light path, and then reflected and guided by the focusing tube 5 to be emitted from directly above the solar cell 611, thereby maximizing the illumination on the solar cell 611.

[0054] See also Fig. 9 and Fig.11 The movement trajectory of the convex lens 45 is like the sun on the ecliptic. The movement trajectory of the center of the convex lens 45 is on the circular surface, and the distance between the center of the convex lens 45 and the focusing tube 5 is always kept constant. Since the convex lens 45 is always kept perpendicular to the sunlight, according to the refraction principle of the lens, the sunlight passing through the convex lens 45 must have a focusing point, and the focusing point is a fixed point. By adjusting the distance between the focusing tube 5 and the convex lens 45, the focusing point of the sunlight passing through the convex lens 45 is kept within the rounded opening of the focusing tube 5. The channel in the focusing tube 5 is trapezoidal, and the diameter is small near the rounded corner of the focusing tube 5. The channel opening at the other end of the focusing tube 5 symmetrical to the rounded corner is large. The sunlight passing through the focusing point is reflected multiple times through the inclined channel to adjust the direction of the light beam. The focusing tube 5 can concentrate the light and make it shine more concentratedly on the solar cell 611.

[0055] In the above structure, the surface of the micro motor 83 is also coated with reflective paint, and the inside of the channel of the focusing tube 5 is also coated with reflective paint. The remaining structures are made of transparent materials mainly including high borosilicate glass materials. Sunlight can penetrate the light tracking component 4 to reduce light loss, and the reflective paint on the micro motor 83 and the focusing tube 5 will reflect the sunlight shining thereon. Since a number of solar cells 611 are provided, part of the sunlight reflected by the micro motor 83 and the focusing tube 5 can also be projected onto the solar cell 611, so as to reduce light loss due to shading.

[0056] Due to the focusing characteristics of the convex lens 45, when ice forms on the solar panel 61 in winter, the convex lens 45 focuses light to quickly increase the temperature to melt the ice, and the temperature generated on the solar cell 611 heats the transparent plate 64 and the solar panel 61, thereby increasing the ice melting rate.

[0057] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to equate some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A light-tracking solar street light, comprising a lamp post (1) and a street light (2), wherein the street light (2) is mounted on the lamp post (1), and characterized in that: A supporting platform (3) is installed on the top of the lamp post (1), and a solar panel (6) is arranged on the supporting platform (3). The solar panel (6) comprises a solar panel (61), a supporting frame (62), a back plate (63) and a transparent plate (64). The back of the solar panel (61) is fixed to the supporting frame (62), and the supporting frame (62) is connected to the back plate (63) by bolts. Solar cells (611) are distributed on the solar panel (61) in a matrix and connected in series. The transparent plate (64) is arranged above the solar panel (61), and light tracking components (4) are also distributed on the transparent plate (64) in a matrix form. The light tracking components (4) are connected to photoresistors (7). Each light tracking component (4) is arranged in a one-to-one correspondence with each solar cell (611). The light tracking component (4) is controlled by the photoresistor (7). After the photoresistor (7) senses light, it drives the light tracking component (4) to perform circular telemetry at an angle perpendicular to sunlight. A focusing tube (5) is also provided on the solar panel (61) between the light tracking component (4) and the solar cell sheet (611); sunlight passes through the light tracking component (4), is focused in the focusing tube (5), and then irradiates the solar cell sheet (611); The light tracking component (4) comprises a support bracket (41) fixed on a transparent plate (64), the two support brackets (41) are connected to a frame (42) via a rotating shaft (47), and the frame (42) and the transparent plate (64) are connected via a telescopic cylinder for rotating the frame (42) around the rotating shaft (47); A symmetrical first semicircular plate (43) and a second semicircular plate (44) are fixed at both ends of the frame (42); semicircular grooves (46) are provided on the opposing surfaces of the first semicircular plate (43) and the second semicircular plate (44); rods at both ends of the convex lens (45) are respectively inserted into the semicircular grooves (46) of the first semicircular plate (43) and the second semicircular plate (44); the rods of the convex lens (45) rotate synchronously around the semicircular grooves (46) on both sides to ensure that the plane where the convex lens (45) is located is perpendicular to the sunlight, and that the focusing point of the sunlight passing through the convex lens (45) is within the focusing tube (5); When the convex lens (45) moves along the semicircular groove (46), the distance between the convex lens (45) and the focusing point in the focusing tube (5) is the same; The extension line of the rotating shaft (47) overlaps with the focusing point in the focusing tube (5), and the top opening of the focusing tube (5) is rounded; The axis of the focusing tube (5) overlaps with the center of the solar cell sheet (611).

2. The light tracking solar street light according to claim 1, characterized in that: A reinforcement plate is welded on the circumferential surface of the supporting platform (3), and a reinforcement rod (31) connected to the back plate (63) is arranged on each reinforcement plate.

3. The light tracking solar street light according to claim 2, characterized in that: The solar cell sheet (611) is a hemispherical structure, and the transparent plate (64) is connected to the solar panel (61).

4. The light tracking solar street light according to claim 3, characterized in that: The rotation of the rod body of the convex lens (45) is driven by a rotating assembly (8). The rotating assembly (8) includes a positioning shaft (81) that rotates on a support frame (41). One end of a connecting rod (82) is sleeved on the positioning shaft (81). The other end of the connecting rod (82) is fixed to the shaft of the convex lens (45). The positioning shaft (81) is connected to the shaft of a micro motor (83). The micro motor (83) drives the positioning shaft (81) and the connecting rod (82) to rotate so that the convex lens (45) moves around the semicircular groove (46). During the movement of the convex lens (45), the convex lens (45) is always perpendicular to the connecting rod (82).

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