KR100401363B1 - Lighting device using sun lights - Google Patents

Abstract

The present invention relates to a lighting apparatus using solar light, and more specifically, to provide indoor lighting without using an apparatus such as an incandescent lamp or a fluorescent lamp that requires electric energy, and also provides power by itself using sunlight. The present invention relates to a lighting apparatus using sunlight that does not require a separate energy supply.

Lighting device using the sunlight of the present invention, in the device for providing lighting to the room using the sunlight, the light collecting unit 10 for collecting the light emitted from the sun, and the light collecting unit ( 10, a spectroscope 20 for dispersing the light incident from the light, an optical transmitter 30 for transmitting the light spectroscopically by the spectroscope 20, and the light transmitted from the optical transmitter 30 It is characterized in that it comprises a lighting unit 40 for illuminating by using, and a position and motor control unit 50 for adjusting the directing position of the condenser 10 in an optimal state according to the movement state of the sun.

Description

Lighting device using sun lights

The present invention relates to a lighting apparatus using solar light, and more specifically, to provide indoor lighting without using an apparatus such as an incandescent lamp or a fluorescent lamp that requires electric energy, and also provides power by itself using sunlight. The present invention relates to a lighting apparatus using sunlight that does not require a separate energy supply.

Fossil fuels such as coal and petroleum are causing many problems such as environmental pollution due to finite resources and harmful gases generated in the fuel combustion process. Currently, solar energy, wind energy, and hydrogen energy are being developed as energy sources to replace fossil energy. Among them, research to use enormous heat and light energy contained in sunlight radiated from the sun is being actively conducted. Solar energy is a pollution-free, clean energy that can be obtained almost free of charge until the sun is extinguished.

Solar energy currently being developed is a method of directly using solar heat or obtaining electrical energy from solar heat. In the case of using solar heat directly, the water is heated using a heat collecting plate, and hot water reaching a certain temperature is directly supplied to the kitchen or the toilet or used for indoor heating. In addition, a method of directly obtaining electrical energy is to use a solar panel using the movement of free electrons in a metal by solar heat. However, solar cells are still used in spacecraft or satellites because of their low energy conversion efficiency and high price. Therefore, the use of solar energy is still limited to a limited portion, and wastes a lot of solar energy that is poured into the ground.

Also in Korea, oil is used in power plants to obtain electrical energy. However, foreign currency is consumed because all the oil has to be imported from foreign countries. Therefore, the spillage of national wealth becomes a problem and a factor that degrades national competitiveness.

The construction of nuclear power plants is underway to reduce the dependence of oil, but the construction of nuclear power plants is nearing its limit due to the disposal of nuclear waste and environmental pollution. Therefore, energy-saving devices are urgently needed to reduce waste of energy and prevent local leakage.

The present applicant has thus developed a device of the present invention that can dramatically reduce the electrical energy by applying infinite and clean solar energy to the indoor lighting device.

The present invention has been made to solve the above problems, an object of the present invention is to provide a lighting device using the sunlight that can reduce energy consumption and there is no concern of environmental pollution by using sunlight directly.

Another object of the present invention is to provide indoor lighting without the use of devices such as incandescent lamps, fluorescent lamps that require electrical energy, and also to generate power by itself using sunlight, which does not require separate energy supply. To provide a lighting device using.

The lighting apparatus using the solar light of the present invention for achieving the above object, in the apparatus for providing lighting to the room using the sunlight, the device for collecting light emitted from the sun, and A spectroscope for dispersing light incident from the condenser, an optical transmitter for transmitting the light spectroscopy by the spectroscope, an illumination unit for illuminating using the light transmitted from the optical transmitter, and movement of the sun It is characterized by consisting of a position and a motor control unit for adjusting the directing position of the light collecting portion to an optimal state according to the state.

1 is a schematic view of a lighting apparatus using solar light of the present invention,

2 is a front view illustrating an external structure of the light collecting part of FIG. 1;

3 is a side cross-sectional view showing the structure of the collecting plate of FIG.

4 is a block diagram of a position and motor control unit of the present invention;

Figure 5 is a flow chart of the operating state of the lighting apparatus using the solar light of the present invention,

6A and 6B illustrate embodiments of an illumination lamp configured by using a plurality of lighting units.

<Description of the code | symbol about the principal part of drawing>

10: light collecting unit 12: collecting plate

14: front panel 16: case

18: Base 20: Spectroscope

22 mirror 24 rotation axis

30: light transmission unit 32: condenser lens

34: connection part 36: optical fiber

40: lighting unit 42: storage unit

44: diffuse reflection lens 50: position and motor control unit

60: wiper 62: fixed portion

64: motor 66: thermoelectric power generating unit

70: control unit 72: electromotive force detection unit

74: solenoid drive unit 76: solenoid

78: switching unit 80: solar panel

82: motor driving unit 84: motor

Hereinafter, a lighting apparatus using sunlight according to the present invention will be described in detail with reference to the accompanying drawings.

The present invention is a device that can save energy by providing lighting indoors using sunlight. Conventionally, indoor lighting using sunlight uses a skylight, but this is a natural light method that is difficult to control the illumination of sunlight. In addition, it was hardly used because it is difficult to induce sunlight in a place deep inside the sky where it is difficult to emit skylights. Even in places such as subways, natural lighting is not possible, so lighting is always used with fluorescent lights.

1 is a schematic configuration diagram of a lighting apparatus using sunlight according to the present invention, which includes a light collecting unit 10 for collecting light emitted from the sun and a spectroscopic unit 20 for dispersing light incident from the light collecting unit. ), An optical transmission unit 30 for transmitting light spectroscopically by the spectroscope 20, and an illumination unit 40 for illuminating using the light transmitted from the optical transmission unit 30 is displayed. . In addition, although not shown, it further includes a position and motor controller 50 for optimally adjusting the directing position of the light concentrator 10 according to the movement state of the sun.

The condenser 10 performs a function of collecting light emitted from the sun at one point. Many techniques for collecting sunlight are known, and in the present invention, the light collecting unit 10 collects sunlight in one place and then transmits the light in a straight line.

Referring back to FIG. 1, the light collecting unit 10 is provided with a front plate 14 for receiving sunlight, and a collecting plate 12 installed at an inner center portion of the front plate 14 to collect sunlight at a single point. And, to support the front plate 14 and the inside is coated with a material for reflecting sunlight and includes an elliptical or circular case (16). The front plate 14 is a transparent circular plate having a good form of sunlight transmittance. The central portion of the case 16 is formed with a hole through which concentrated sunlight can pass.

FIG. 2 is a front view of the light collecting part 10. In the center of the transparent front plate 14, a wiper 60 is installed to clean the surface of the front plate 14. As shown in FIG. The wiper 60 is operated using a thermoelectric power generated by the temperature difference of the collecting plate 12 as a power source. In addition, a solar panel 80 that can generate a voltage directly from the sun is provided under the front panel 14. The solar panel 80 is used to operate the motor of the spectroscope 20. Although not shown in the interior of the base 18, a solenoid 76 for rotating the light collecting portion 10 and a control circuit for operating the same are provided. The solenoid 76 is operated to maintain the optimal direction of incidence of sunlight.

Sunlight incident through the front plate 14 is collected by the reflecting material and collected at the center of the collecting plate 12. The collected sunlight is in a state of very strong thermal energy as focused by the lens. This is actually similar to the state in which sunlight collected at a point by a lens is concentrated on a paper and ignited. Since it is in a high temperature state, it is preferable to comprise the collection plate 12 using the metal which can prevent it from being damaged by high temperature, or using the metal with high heat transfer rate. In addition, it is preferable to use a metal having high heat transfer rate or a metal that can withstand high temperatures as the external material of the case 16. The movement states of the incident light and the focused light are indicated by arrows in the figure.

Concentrating sunlight as described above is intended to deliver in a concentrated state in a high energy state because the normal solar light has a low energy density and low illuminance when delivered to a distant place.

The light collected by the condenser 10 is incident on the spectroscope 20. The spectroscope 20 serves to disperse incident sunlight. That is, the light incident from the condenser 10 is focused light, which is a high energy integrated state that is hard to be seen by a human eye, and is thus distributed by about 100 Hz.

Referring to FIG. 1 again, the spectroscope 20 includes a mirror 22 for refracting solar light incident from the light concentrator 10, and a motor (not shown) for rotating the mirror 22. It is composed of The mirror 22 is rotated by connecting the central portion to the rotation shaft 24 of the motor. The sunlight in the focused state is refracted instantaneously by the rotation of the mirror 22. Therefore, the sunlight which is refracted by the mirror 22 instantaneously is transmitted in the form of a flash, and does not cause much damage even when directly viewed by the eye. The rotation speed of the mirror 22 is about 60 to 120 per second, preferably about 100 times.

The flash generated from the spectroscope 20 is transmitted by the light transmitter 30. The light transmission unit 30 transmits the flash to a room or a place where lighting is required.

The light transmission unit 30 includes a condenser lens 32 for concentrating solar light incident from the spectroscope 20, an optical fiber 36 serving as an optical transmission path, and the condenser lens 32 and an optical fiber 36. It includes a connecting portion 34 for fixing. As is well known, the optical fiber has a characteristic of transmitting light to a desired place with a low loss rate.

Sunlight transmitted through the light transmission unit 30 has a light emission state by the illumination unit 40. That is, the lighting unit 40 functions as a conventional lamp, and the energy source used at this time is different from sunlight, not electricity.

As shown, the lighting unit 40 includes an accommodating unit 42 accommodating the optical fiber 36, and a diffuse reflection lens connected to the accommodating unit 42 to disperse sunlight incident through the optical fiber 36 ( 44). Various types of lamps may be configured according to the shape of the diffuse reflection lens 44, and the illumination may be adjusted.

In addition, the lighting device using the sunlight of the present invention further includes a position and the motor control unit 50. The position and motor control unit 50 is for adjusting the position of the light collecting unit 10 of the present invention and for adjusting the motor for rotating the mirror 22 in the spectroscopic unit 20. Since the mirror 22 is used to reflect sunlight, a small mirror having a rectangular shape can be used. Accordingly, a small motor output is used, and a small motor that can be operated by a solar cell is possible. The position and the structure of the motor control unit 50 are shown in FIG.

Since the light collecting unit 10 uses sunlight as a light source, it must always collect sunlight in an optimal state (the brightest state). Therefore, the orientation position of the collecting plate 12 should be changed in accordance with the movement of the sun that changes with time. In the present invention, the position of the sun is identified using the thermoelectric power, and the case 16 of the light collecting unit 10 is moved according to the identified position to maintain an optimal facing state. At this time, the reference voltage for the thermoelectric power is preferably set to be the same value as the thermoelectric power generated by the sunlight to provide the appropriate illuminance in the place where the illumination is installed by the sunlight. Thus, the reference voltage can be changed depending on the place where the device of the present invention is installed.

3 is a structure for generating thermoelectric power, in particular, an embodiment in which the thermoelectric power generation unit 66 is installed in the collecting plate 12.

The thermoelectric power generated by the thermoelectric generator 66 is used to determine the position of the sun and drive the wiper 60. The wiper 60 is operated by driving the motor 64 using the electromotive force generated by the thermoelectric generator 66. The wiper 60 cleans the surface of the front plate 14 to remove foreign substances such as dust and keeps the maximum sunlight at all times.

First, the thermoelectric power will be briefly described as follows.

Thermoelectric power refers to the electromotive force generated in a circuit when two ends of two different conductors (or semiconductors) are joined together to maintain two contacts at different temperatures. This phenomenon is called the Seebeck effect because T. Seebeck discovered about copper, bismuth, and antimony in 1821. The temperature can be measured by measuring the thermoelectric power. That is, one junction is kept at a constant temperature (standard temperature such as ice), and the potential difference generated at its two ends is measured to find the temperature. This is called a thermocouple, and is widely used.

In order to use the thermoelectric power by the Seebeck effect, two circuits are connected to each other to form a closed circuit. When two junctions are at the same temperature, no current flows, but if the temperatures are different, current flows in the circuit due to thermoelectric phenomena. For example, in thermoelectric pairs of copper and constantan (alloy 60% copper and 40% nickel), if one junction is kept at 0 ° C and the other is at 100 ° C, the thermal current flows to the copper through the junction at 100 ° C. The power is 4.24 mV. The thermoelectric power does not change when the temperature of both joints is made the same even if the third metal is joined by cutting the middle of the circuit while maintaining the temperature at each junction. From this fact, the thermoelectric power can be measured using a millivoltmeter or a more accurate potentiometer.

In the present invention, the thermoelectric power generating unit 66 is installed on the collecting plate 12 because the collecting plate 12 is brought to a high temperature state by concentrating solar light. That is, since the inner end of the collection plate 12 is a high temperature and the outer end is a relatively low temperature, a pair of metals (a, b) are in contact with each other to generate a thermoelectric power.

Although the thermoelectric power generation unit 66 has been described as being configured by bringing a pair of metals (a, b) into contact with each other, it is obvious that the thermoelectric power generation unit 66 can also be configured using other elements capable of generating thermoelectric power by using a temperature difference.

The metal (a, b) can be configured using alumel and cromel. Cromel is a nickel alloy with about 20% chromium added to nickel, and is often used in thermoelectric pairs in combination with aluminel. Alumel is the addition of aluminum (3.5%) and iron (0.5%) to nickel. The electromotive force of the aluminel and cromel thermoelectric pairs is converted approximately linearly with respect to temperature, and is most often used as an industrial thermoelectric pair.

It is stable in the air and can be used up to about 1200 ° C., so it has sufficient durability to withstand the high temperature of sunlight in the present invention. The increase in electromotive force for the rise of 100 ° C. is about 4.1 mV.

Referring again to FIG. 4, the position and motor control unit 50 includes an electromotive force sensing unit 72 for sensing the thermoelectric power generated from the thermoelectric power generation unit 66, and the heat input from the electromotive force sensing unit 72. A control unit 70 for determining the position of the sun by comparing the power with a predetermined reference voltage, a solenoid driving unit 74 for moving the position of the light collecting unit 10 according to a control signal output from the control unit 70, and And a solar panel 80 for generating a predetermined voltage using sunlight, and a motor driver 82 for driving the motor 84 for rotating the mirror 22.

The electromotive force detecting unit 72 detects the electromotive force generated by the electromotive force generating unit 66 and inputs a signal corresponding thereto to the controller 70. The controller 70 compares the input electromotive force data with preset reference voltage data. As a result of comparison, when the thermoelectric power is equal to or greater than the set reference voltage, the current position is maintained, and when the thermoelectric power is small, it is determined that a sufficient amount of light is not incident from the sunlight. In the case of adjusting the position, when the control unit 70 outputs a control signal to the solenoid driver 74, the solenoid driver 74 controls the solenoid 76 to move the position of the condenser 10 by one step angle.

One step angle can be determined in the following manner. Determining a time zone having an appropriate illuminance for illumination during sunrise and sunset of the area where the lighting device using the solar light of the present invention is installed, measuring the thermoelectric power change threshold according to the solar movement state, the measured change threshold as time In conversion, the illuminance time period is divided by the converted time and set at one step angle.

For example, if the time zone with adequate illumination is from 8 am to 4 pm, the time zone is 8 hours. In addition, the thermoelectric power change threshold point is that the thermoelectric power measured at one step angle becomes smaller than the reference voltage, and if this is 15 minutes, 8 hours becomes 8x60 (= 480) / 15 = 32 steps. That is, eight hours are divided into 32 steps, and each time the solenoid 76 is operated once, the front plate 14 of the light collecting unit 10 is moved by one step angle. The step angle is a value that can be changed depending on the region. Although the installation state of the solenoid 76 is not shown, it can be easily manufactured by the prior art. In addition, it is apparent that the stepping motor and the gear mechanism can be configured to move the light collecting unit 10 by one step angle without using the solenoid 76.

The controller 70 may also use the voltage supplied through the solar panel 80 as an operating power source. At this time, in order to ensure the stability of the operation it is possible to use the storage battery for storing the voltage supplied from the solar panel 80 or to supply the power required to the control unit 70 using a commercial battery. Therefore, the lighting device using the solar light of the present invention, once installed, is characterized by operating without a power supply from the outside.

The voltage generated through the solar panel 80 is used to drive a motor 84 that rotates the mirror 22 of the spectroscope 20. That is, when the controller 70 confirms that the solar light is incident from the electromotive force detecting unit 72, the controller 70 detects the voltage of the solar panel 80, and then controls the motor driving unit 82 when the predetermined voltage reaches the motor 84. Apply voltage to When a voltage is applied, the motor 84 rotates, and the mirror 22 connected to the rotating shaft 24 rotates to speculate the sunlight incident from the light collecting unit 10.

In the above description with reference to FIG. 1, only one optical transmitter 30 connected to the spectroscope 20 is displayed, but since the spectroscope 20 rotates 100 times per second, the optical transmitter 30 is theoretically 100 for the same solar light source. Can connect dogs Therefore, it is possible to maintain appropriate lighting by adjusting the number of lighting units 40 that emit sunlight.

6A and 6B are fluorescent lamps formed using a plurality of lighting units 40. As shown, a circular or rectangular diffuse reflection lens 44 can be used to obtain the required level of illuminance to be used in place of a fluorescent lamp.

The operational effect of the lighting apparatus using the solar light of the present invention having the above configuration will be described with reference to the flowchart of FIG. 5.

When the installation is completed and the operation is started, the control unit detects the thermoelectric power. If the detected thermoelectric power is zero, the lighting device using the solar light of the present invention does not operate because it is before the sun rises or it is a cloudy day. Therefore, indoors should be illuminated using commercial power.

If the thermal power is greater than zero, the controller detects the thermal power and compares it with the reference voltage. As a result of the comparison, if the thermoelectric power is greater than or equal to, the controller determines that current sunlight is normally incident and maintains the current condenser 10 position.

However, when the thermoelectric power is low, sunlight does not normally enter, so the control unit outputs a control signal to the solenoid driving unit to change the current condenser position, thereby changing the condenser portion by one step angle.

After changing the position of the light collecting unit by one step angle, the controller detects the value of the thermoelectric power and compares it with the reference voltage. When the position is normally shifted according to the sunlight, the thermoelectric power is equal to or greater than the reference voltage. In this case, the light collector maintains its current position. In addition, it is desirable to measure the thermoelectric power for several minutes in order to allow an error in the incident position of sunlight.

On sun or cloudy days, the value of the thermoelectric power is zero or very weak. If the state continues for a predetermined time, the control unit returns the light collecting unit 10 to maintain the standby state to face the sun at the time when the next sun light is incident, that is, the next morning. In addition, the device of the present invention is preferably used in parallel with a lighting device using a commercial power source in preparation for night or cloudy days.

According to the present invention as described above, the indoor lighting is provided without using an apparatus such as an incandescent lamp or a fluorescent lamp that requires electrical energy, and also generates solar power by using solar light, and thus does not require a separate energy supply. It is possible to provide a lighting device using light.

Although the invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that modifications and variations can be made within the spirit and scope of the invention, and such variations or modifications will belong to the appended claims. .

Claims (4)

A device for providing indoor lighting using sunlight, the device comprising: A front plate 14 for receiving sunlight, a collecting plate 12 installed at an inner center portion of the front plate 14 to collect sunlight at one point, and the front plate 14 are supported therein. A light collecting part 10 including an oval case 16 coated with a material for reflecting sunlight; A spectroscope 20 comprising a mirror 22 for refracting sunlight incident from the light concentrator 10 and a motor 84 for rotating the mirror 22; A condenser lens 32 for concentrating solar glare incident from the spectroscope 20, an optical fiber 36 serving as a light transmission path, and a connecting portion 34 for fixing the condenser lens 32 and the optical fiber 36. Optical transmission unit 30 including; An illumination unit 40 including an accommodating part 42 accommodating the optical fiber 36 and a diffuse reflection lens 44 connected to the accommodating part 42 to disperse the sunlight incident through the optical fiber 36; And The electromotive force detecting unit 72 that detects the thermoelectric power generated by the thermoelectric power generating unit 66 and the thermoelectric power input from the electromotive force detecting unit 72 and a predetermined reference voltage are compared to determine the position of the sun. The control unit 70, the solenoid driving unit 74 to move the position of the light collecting unit 10 in accordance with the control signal output from the control unit 70, and the solar panel 80 to generate a predetermined voltage using sunlight And a motor control part 50 including a motor driving part 82 for driving the motor 84 for rotating the mirror 22; Lighting device using solar light comprising a. The method of claim 1, The wiper 60 is further installed on the front plate 14 of the light collecting unit 10 to remove foreign substances attached to the surface of the front plate 14, and the wiper 60 is thermoelectric power installed on the collecting plate 12. Lighting device using sunlight, characterized in that the power supply for the operation by the generation unit 66 is supplied. The method of claim 1, Illumination apparatus using sunlight, characterized in that the mirror 22 of the spectroscope 20 rotates 80 to 120 times per second, preferably 100 times. The method of claim 1, Illuminating device using sunlight, characterized in that the lighting unit 40 is connected in parallel to the same solar light source incident from the light collecting unit (10).