Multi-scene safe, efficient and intelligent sunlight lighting device and design method thereof

Abstract

The invention provides a multi-scene safe and efficient intelligent sunlight lighting device and a design method thereof, and relates to the technical field of sunlight lighting. The lighting device comprises reflective lighting devices, an automatic control device and a paraboloid-shaped reflector, and the reflective lighting devices are distributed on the periphery of the paraboloid-shaped reflector in an array mode; the reflective lighting device comprises a high-permeability condensing lens, a bearing structure, a bearing panel and an automatic cleaning device, the high-permeability condensing lens covers the bearing panel at the upper end of the bearing structure, the bearing panel is connected with the automatic control device through the bearing structure, and the automatic cleaning device comprises a brush. The upper end and the lower end of the brush clean the high-permeability condensing lens through the sliding rails. The defects in the prior art are overcome, the problems that according to an existing sunlight illumination technology, the sunlight transmission efficiency and the resource utilization efficiency are low, and the temperature of highly-focused sunlight is too high, so that device aging is accelerated or a fire disaster is caused are solved, the service life of equipment is prolonged, and applicability is high.

Description

Technical Field

[0001] The present invention relates to the field of sunlight lighting technology, and in particular to a multi-scenario safe, efficient and intelligent sunlight lighting device and a design method thereof. Background Art

[0002] As a renewable energy source, sunlight can provide high-intensity and uniform lighting, greatly improve the visibility inside some enclosed spaces, and significantly reduce energy consumption. The use of natural light can reduce dependence on artificial lighting, thereby saving electricity bills and reducing carbon emissions. Secondly, the natural spectrum of sunlight can help improve the comfort of the indoor environment, improve people's mental health and work efficiency. Studies have shown that an appropriate amount of natural light can improve concentration and productivity. In addition, the solar lighting system uses sunlight, a renewable energy source, which is in line with the development concept of green energy conservation, helps promote sustainable development, and reduces the overall environmental impact of buildings. At the same time, this system can also lower indoor temperatures, reduce air conditioning energy consumption, and further save energy.

[0003] However, there are still some problems with the existing solar lighting system lighting devices. For example, when there are fewer lighting devices, the received sunlight cannot meet the lighting needs of a large area in the application place. When there are more lighting devices, it causes a waste of resources. There is a lack of automatic control devices, and the sunlight cannot be effectively utilized, which affects the utilization efficiency of the sunlight. In addition, the highly focused sunlight directly shines on the lighting device, or directly shines on the light guide device when entering the light guide device because it is not parallel to the light guide device. The high temperature brought about accelerates the aging of the device equipment, reduces the efficiency, and increases the frequency and difficulty of manual maintenance. At the same time, the sunlight that is not parallel to the light guide device when entering the light guide device will undergo multiple reflections when transmitted in the light guide device, and the loss is greatly increased, which seriously affects the transmission efficiency of the sunlight. These problems have greatly restricted the promotion and application of solar lighting. Summary of the invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a multi-scenario safe, efficient and intelligent sunlight lighting device and a design method thereof, which solves the problems of low sunlight transmission efficiency and resource utilization efficiency in existing sunlight lighting technology and the excessively high temperature of highly focused sunlight leading to accelerated aging of the lighting device.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A multi-scenario safe, efficient, and intelligent sunlight lighting device, the lighting device comprising a reflective light collector, an automatic control device, and a parabolic reflector, the reflective light collector being dispersedly arranged in an array and fixed around the parabolic reflector; the reflective light collector comprising a high-transmittance focusing lens, a bearing structure, a bearing panel, and an automatic cleaning device, the high-transmittance focusing lens covering the bearing panel at the upper end of the bearing structure, and the outer surface of the high-transmittance focusing lens is coated with a protective film, the surface of the bearing panel is coated with a layer of high-reflectivity material that can reflect sunlight, the bearing panel is connected to the automatic control device through the bearing structure, the automatic cleaning device comprises a brush whose bristles are in contact with the upper surface of the high-transmittance focusing lens, and the upper and lower ends of the brush slide back and forth on the bearing panel through slide rails to clean the high-transmittance focusing lens.

[0007] Preferably, the automatic control device integrates light sensors, temperature sensors, servo motors, and intelligent algorithm module components, monitors light intensity, angle, and ambient temperature in real time, and transmits data to the intelligent algorithm module to adjust the lighting height and angle of the reflective light collector, and controls the automatic cleaning device to automatically clean the high-transmittance focusing lens.

[0008] Preferably, the parabolic reflector is made of a metal material with good heat dissipation and is fixed in position by a fixing device. The concave surface of the parabolic reflector is facing downward as a whole and is coated with a high-reflectivity material that can absorb red and ultraviolet rays and reflect visible light, or is plated with a high-reflectivity metal film that can absorb red and ultraviolet rays and reflect visible light, and a protective film is coated on the surface.

[0009] Preferably, the high focusing lens is a Fresnel lens or an aspherical lens.

[0010] The reflective daylighting devices installed in an array and dispersed arrangement control the angle and direction of real-time daylighting through an automatic control device, reflecting and focusing the sunlight to the focus of the parabolic reflector. The parabolic reflector reflects the sunlight reflected on it as parallel light, and then guides the sunlight to a specified direction or into a light guide device. The specific calculation steps of the number of reflective daylighting devices and the equation of the parabolic reflector are as follows:

[0011] S1. Calculate the total luminous flux Φ required to meet the lighting needs in the application area according to actual needs;

[0012] S2. The specific calculation formula for determining the luminous flux that each reflective light collector can collect is as follows:

[0013] φ=sinθ·E·a·b

[0014] Wherein, φ is the luminous flux (lm) that each reflective daylighting device can collect, θ is the angle between the irradiated light and the reflective daylighting device's carrying panel, E is the light intensity required to meet the lighting needs of the application site, and a and b are the length and width of the reflective daylighting device, respectively;

[0015] S3. The specific calculation formula for the number of light collectors required for the solar lighting system is as follows:

[0016]

[0017] Where N is the number of reflective daylighting devices required for the solar lighting system, Φ is the total luminous flux (lm) required to meet the lighting needs of the application site, φ is the luminous flux (lm) that each reflective daylighting device can collect, and η 采 is the daylighting efficiency of the reflective daylight collector;

[0018] S4. When the lighting requirements in the application area are met, the specific calculation formula for the area of ​​the parabolic reflector is as follows:

[0019]

[0020] Where S is the area of ​​the parabolic reflector, η 热 is the heat conversion efficiency of the parabolic reflector, E 热 is the heat energy generated by unit luminous flux (W / lm), h is the heat transfer coefficient between the parabolic reflector and the surrounding environment, T 抛 is the optimal operating temperature of the parabolic reflector (℃), T 环 is the ambient temperature (℃);

[0021] S5. Based on the area and maximum diameter of the parabolic reflector, the specific equation of the parabolic reflector is as follows:

[0022] z=a(x 2 +y 2 )

[0023] Where z is the specific equation of the parabolic reflector, and D is the maximum diameter of the parabolic reflector;

[0024] Where a is obtained by the following formula:

[0025]

[0026] The present invention provides a multi-scenario safe, efficient and intelligent sunlight lighting device and a design method thereof, which has the following advantages over the prior art:

[0027] (1) The present invention provides a multi-scenario safe, efficient and intelligent sunlight lighting device and its design method. Compared with the traditional sunlight lighting system lighting device, the present invention effectively reduces the heat accumulation on the parabolic reflector by calculating the specific equation of the parabolic reflector in the lighting device, and uses a metal material with good heat dissipation to manufacture the reflector, and adopts a high reflectivity material coating, which effectively reduces the aging rate of the parabolic reflector and extends the service life. At the same time, the parallel effect of the parabolic reflector on sunlight makes it possible for the highly focused sunlight to not directly shine on other equipment after being parallel, effectively avoiding the high temperature caused by the highly focused sunlight shining on the surface of other equipment, which will accelerate its aging or cause a fire, greatly improving the safety of the overall system, significantly reducing the frequency of manual maintenance and replacement of equipment, and reducing operating costs;

[0028] (2) Compared with the traditional solar lighting system, the present invention improves the utilization efficiency and transmission efficiency of sunlight by real-time tracking and focusing of the reflective light collectors arranged in an array and the parallel effect of the parabolic reflector on the sunlight. At the same time, according to the actual lighting demand of the required lighting area in the application site, the number of reflective light collectors in the lighting device required by the solar lighting system is accurately calculated, thereby avoiding insufficient lighting in the application site due to a small number of reflective light collectors and unnecessary waste of resources due to a large number of reflective light collectors, thereby improving the overall energy efficiency of the system;

[0029] (3) The present invention effectively avoids the influence of dust or dirt on the surface of the reflector on the lighting effect by setting an automatic cleaning device on the reflector, and always maintains efficient light reflection ability, which not only reduces the need for manual cleaning, but also ensures the lighting stability of the system during long-term operation, reduces cleaning and maintenance costs and prolongs the service life of the equipment;

[0030] (4) The lighting device of the present invention has a simple structure and a reasonable design. It is not only easy to install and maintain later, but also significantly improves the resource utilization efficiency of the solar lighting system in various application sites through its efficient lighting capacity and low-cost operation characteristics. It has effectively promoted the widespread application of solar lighting technology in various closed spaces, especially in tunnels, underground parking lots, underground shopping malls and other places where natural light is required, and expanded the application prospects of solar lighting in other closed spaces. It provides green and energy-saving lighting solutions for more fields, conforms to the development concept of green energy conservation, and provides a strong guarantee for the sustainable development of solar lighting technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the light path of the lighting device of the present invention;

[0032] Figure 2It is a structural schematic diagram of a reflective light collector of the light collecting device of the present invention;

[0033] Figure 3 It is a structural schematic diagram of a parabolic reflector of the lighting device of the present invention;

[0034] In the figure: 1. reflective light collector; 2. parabolic reflector; 1-1. automatic control device; 1-2. high-transmittance focusing lens; 1-3. bearing structure; 1-4. bearing panel; 1-5. automatic cleaning device. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention is clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are 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.

[0036] Embodiment 1:

[0037] A multi-scenario safe, efficient and intelligent sunlight lighting device: its specific settings are as follows Figure 1 As shown, it includes a reflective light collector 1, a parabolic reflector 2 and an automatic control device 1-1. The reflective light collector 1 automatically controls the lighting angle and direction through the automatic control device 2, reflects and focuses the sunlight to the focus of the parabolic reflector 1-1, and the parabolic reflector 1-1 reflects the received sunlight into parallel light, and then directs the sunlight to a specified direction. The number of reflective light collectors 1 and the specific parameters of the parabolic reflector 1-1 are determined by the actual lighting needs of the required lighting area in the application site;

[0038] The reflective light collector 1 includes a high-transmittance focusing lens 1-2, a bearing structure 1-3, a bearing panel 1-4 and an automatic cleaning device 1-5. The high-concentrating lens 1-2 uses a Fresnel lens or an aspherical lens, which is covered on the bearing panel 1-4 at the upper end of the bearing structure 1-3 and is used to focus sunlight. The outer surface is coated with a layer of silicon protective film to protect the high-transmittance focusing lens 1-2. The surface of the bearing panel 1-4 is coated with a layer of mirror aluminum material with high reflectivity that can reflect sunlight, which is used to reflect sunlight. The bearing panel 1-4 is connected to the automatic control device 1-1 through the bearing structure 1-3. When in use, the automatic cleaning device 1-5 moves freely through the slide rail and uses a soft brush to regularly clean the surface of the reflective light collector 1. The reflective light collector 1 is dispersedly arranged in an array and fixed around the parabolic reflector 2;

[0039] The automatic control device 1-1 integrates components such as light sensors, temperature sensors, servo motors, and intelligent algorithm modules. It monitors light intensity, angle, and ambient temperature in real time, and transmits data to the intelligent algorithm module. It dynamically adjusts the orientation and angle of the light collector and reflector based on the ray tracing algorithm to adapt to the needs of different scenarios. When an abnormality or a change in light demand is detected, it automatically triggers the adjustment to ensure that the system still meets the lighting needs when the lighting conditions suddenly change. The control system also predicts future lighting trends based on historical data, and adjusts the lighting height and angle of the reflective light collector in advance to ensure stable lighting output in different weather and time periods.

[0040] The parabolic reflector 2 is made of aluminum or copper, a metal material with good heat dissipation, and is fixed at a specific position by a fixing device. The sunlight focused at its focal point is reflected as parallel light and then guided to a specified position or into a light guiding device. The concave surface of the parabolic reflector 2 is coated with nano silver, a high reflectivity material that can absorb red and ultraviolet rays and reflect visible light, or is plated with a high reflectivity aluminum film that can absorb red and ultraviolet rays and reflect visible light, and a layer of silicon protective film is coated on the surface.

[0041] Embodiment 2:

[0042] The above-mentioned lighting device is set in the tunnel, and the equation design of the number of reflective daylighters 1 and parabolic reflectors 2 of the lighting device is as follows:

[0043] S1. Calculate the total luminous flux Φ required to meet the lighting needs in the application area. The specific steps are as follows:

[0044] ①Based on the lighting parking sight distance D S The length of each section of the entrance section is calculated based on the clearance height h of the opening. The calculation formula is as follows:

[0045]

[0046] Among them, D th1 and D th2 They are respectively expressed as the length of inlet section 1 and inlet section 2 (m);

[0047] ② Based on the calculated entrance section length and tunnel operation design speed v t The length of each section of the transition section is further calculated, and the calculation formula is as follows:

[0048]

[0049] Among them, D tr1 , D tr2 and D tr3 Denote the lengths of transition section 1, transition section 2 and transition section 3 (m), respectively. th1 and D th2are the lengths of inlet section 1 and inlet section 2, respectively (m);

[0050] The remaining length of the tunnel is the length of the middle section D in (m);

[0051] ③ Determine the required lighting area A for each section in the tunnel i , the calculation formula is as follows:

[0052] A i =D i ×W

[0053] Among them, A i The required lighting area for each section in the tunnel (m 2 ), D i is the calculated length of each section in the tunnel (m), W is the width of the road in the tunnel (m);

[0054] ④ Calculate the brightness L of each section of the entrance section based on the actual brightness outside the tunnel th1 , L th2 , the calculation formula is as follows:

[0055] L th1 = k × L 20 (S)

[0056] L th2 =0.5×k×L 20 (S)

[0057] Among them, L th1 and L th2 Respectively represent the required lighting brightness of tunnel entrance section 1 and entrance section 2 (cd / m 2 ), L 20 (S) is the brightness outside the cave (cd / m 2 );k is the brightness reduction coefficient of the entrance section;

[0058] ⑤According to the calculated entrance brightness L th1 and L th2 , calculate the transition brightness L tr1 , L tr2 and L tr3 , the calculation formula is as follows:

[0059] L tr1 =0.15×L th1

[0060] L tr2 =0.05×L th1

[0061] L tr3 =0.15×L th1

[0062] Among them, L tr1 , L tr2 and L tr3 Respectively represent the required lighting brightness of tunnel transition section 1, transition section 2 and transition section 3 (cd / m 2 );

[0063] The brightness of the middle section is calculated based on the design speed and design traffic volume;

[0064] ⑥Convert the required brightness into lighting intensity E i , the calculation formula is as follows:

[0065] E i =c×L i

[0066] Among them, E i is the lighting intensity (lx); L i is the lighting brightness (cd / m 2 ); c is the conversion factor. When there is no actual measurement condition, the black asphalt road surface can be taken as 15lx / (cd / m 2 ), cement concrete pavement can take 10lx / (cd / m 2 );

[0067] ⑦According to the lighting area A required for each section of the tunnel i With the lighting intensity E i , calculate the required luminous flux Φ for each section in the tunnel i , the calculation formula is as follows:

[0068] Φ i =A i ×E i

[0069] ⑧Calculate the total luminous flux Φ required for the tunnel to meet actual lighting needs:

[0070]

[0071] Among them, Φ is the total luminous flux required for the tunnel to meet the actual lighting needs, Φ i is the luminous flux required for each section in the tunnel, MF i is the solar attenuation coefficient of each section in the tunnel;

[0072] S2. The specific formula for determining the luminous flux that each reflective light collector 1 can collect is as follows:

[0073] φ=sinθ·E·a·b

[0074] Wherein, φ is the luminous flux (lm) that each reflective daylighting device 1 can collect, θ is the angle (°) between the irradiated light and the bearing panel of the reflective daylighting device 1, E is the light intensity required for the application site to meet the lighting requirements, and a and b are the length and width of the reflective daylighting device 1, respectively;

[0075] S3. The calculation formula for the number of reflective light collectors 1 required for the solar light guide lighting system is as follows:

[0076]

[0077] Wherein, N is the number of reflective daylighting devices 1 required for the solar light guide lighting system, Φ is the total luminous flux (lm) required for the application site, φ is the luminous flux (lm) that each reflective daylighting device 1 can collect, and η 采 is the light collection efficiency of the reflective light collector 1;

[0078] S4. When the lighting requirements in the application site are met, the specific calculation formula for the area of ​​the parabolic reflector 2 is as follows:

[0079]

[0080] Where S is the area of ​​the parabolic reflector, η 热 is the heat conversion efficiency of the parabolic reflector, E 热 is the heat energy generated by unit luminous flux (W / lm), h is the heat transfer coefficient between the parabolic reflector and the surrounding environment, T 抛 is the optimal operating temperature of the parabolic reflector (℃), T 环 is the ambient temperature (℃);

[0081] S5. Based on the area and maximum diameter of the parabolic reflector, the specific equation of the parabolic reflector is as follows:

[0082] z=a(x 2 +y 2 )

[0083] Where z is the specific equation of the parabolic reflector, and D is the maximum diameter of the parabolic reflector;

[0084] Where a is obtained by the following formula:

[0085]

[0086] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-scenario safe, efficient and intelligent sunlight lighting device, the lighting device comprising a reflective lighting device (1), an automatic control device (1-1) and a parabolic reflector (2), characterized in that: The reflective light collectors (1) are dispersedly arranged in an array and fixed around the parabolic reflector (2); The reflective light collector (1) comprises a high-transmittance focusing lens (1-2), a bearing structure (1-3), a bearing panel (1-4) and an automatic cleaning device (1-5); the high-transmittance focusing lens (1-2) is covered on the bearing panel (1-4) at the upper end of the bearing structure (1-3); the outer surface of the high-transmittance focusing lens (1-2) is plated with a protective film; the surface of the bearing panel (1-4) is coated with a layer of high-reflectivity material capable of reflecting sunlight; the bearing panel (1-4) is connected to the automatic control device (1-1) via the bearing structure (1-3); the automatic cleaning device (1-5) comprises a brush whose bristles are in contact with the upper surface of the high-transmittance focusing lens (1-2); and the upper and lower ends of the brush reciprocate on the bearing panel (1-4) via a slide rail to clean the high-transmittance focusing lens (1-2); The reflective light collectors (1) are arranged in an array and dispersedly, and the angle and direction of the real-time lighting are controlled by an automatic control device (1-1), so that the sunlight is reflected and focused to the focus of the parabolic reflector (2). After the parabolic reflector (2) reflects the sunlight reflected thereon as parallel light, the sunlight is guided to a designated direction or into a light guide device. The specific calculation steps of the number of reflective light collectors (1) and the equation of the parabolic reflector (2) are as follows: S1. Calculate the total luminous flux Φ required to meet the lighting needs in the application area according to actual needs; S2. The specific calculation formula for determining the luminous flux that each reflective light collector can collect is as follows: φ=sinθ·E·a·b Wherein, φ is the luminous flux (lm) that each reflective daylighting device can collect, θ is the angle between the irradiated light and the reflective daylighting device's carrying panel, E is the light intensity required to meet the lighting needs of the application site, and a and b are the length and width of the reflective daylighting device, respectively; S3. The specific calculation formula for the number of light collectors required for the solar lighting system is as follows: Where N is the number of reflective daylighting devices required for the solar lighting system, Φ is the total luminous flux (lm) required to meet the lighting needs of the application site, φ is the luminous flux (lm) that each reflective daylighting device can collect, and η 采 is the daylighting efficiency of the reflective daylight collector; S4. When the lighting requirements in the application area are met, the specific calculation formula for the area of ​​the parabolic reflector is as follows: Where S is the area of ​​the parabolic reflector, η 热 is the heat conversion efficiency of the parabolic reflector, E 热 is the heat energy generated by unit luminous flux (W / lm), h is the heat transfer coefficient between the parabolic reflector and the surrounding environment, T 抛 is the optimal operating temperature of the parabolic reflector (℃), T 环 is the ambient temperature (℃); S5. Based on the area and maximum diameter of the parabolic reflector, the specific equation of the parabolic reflector is as follows: z=a(x 2 +y 2 ) Where z is the specific equation of the parabolic reflector, and D is the maximum diameter of the parabolic reflector; Where a is obtained by the following formula:

2. The lighting device according to claim 1, characterized in that: The automatic control device (1-1) integrates a light sensor, a temperature sensor, a servo motor, and an intelligent algorithm module component, and adjusts the lighting height and angle of the reflective light collector by monitoring the light intensity, angle, and ambient temperature in real time and transmitting the data to the intelligent algorithm module, and controls the automatic cleaning device (1-5) to automatically clean the high-transmittance focusing lens (1-2).

3. The lighting device according to claim 1, characterized in that: The parabolic reflector (2) is made of a metal material with good heat dissipation, and is fixed in position by a fixing device. The concave surface of the parabolic reflector is facing downward as a whole, and is coated with a high-reflectivity material that can absorb red and ultraviolet rays and reflect visible light, or is plated with a high-reflectivity metal film that can absorb red and ultraviolet rays and reflect visible light, and a protective film is plated on the surface.

4. The lighting device according to claim 1, characterized in that: The high focusing lens (1-2) is a Fresnel lens or an aspherical lens.

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