KR101290858B1 - Light emitting diode street light capable of controlling turn on and off together with dimming - Google Patents

Abstract

PURPOSE: An LED street light capable of controlling operation is provided to effectively control operation of a street light by using an electric power property which is generated during an operation process of a solar cell module. CONSTITUTION: A fuel-sensitized solar cell module (11) comprises multiple monomers (111a,111b,111c) which are rotatable around a rotary shaft (114) as a center. An LED module (12) comprises multiple units (121a,121b,121c) which are installed to be faced with a solar cell module. A battery (18) is connected to the solar cell module. A sensor unit (15) generates a feedback signal by being connected to the solar cell module and the LED module. A comparator (16) compares a value which is measured by the sensor unit with a predetermined value, and delivers a compared value to a control unit (C).

Description

Light Emitting Diode Street Light Capable of Controlling Turn On and Off together with Dimming}

The present invention relates to a street light capable of operation control, and more particularly, to a street light that is driven by the power generated from the dye-sensitized solar cell module and controls the operation by using the generation degree of the power as a feedback signal.

Street lamps are lighting facilities installed for the safety and security of street traffic. Highways, main roads of the city, and commercial district roads. Can be installed for residential roads or for rest roads such as parks. In general, the light source of the street lamp may be a lighting lamp such as a high pressure mercury lamp, a fluorescent lamp, a sodium lamp, or an incandescent lamp. Since the light source has a structure that emits light using filament, the efficiency is low, and an LED (Lighting Emitting Diode) that converts electrical energy directly into light energy using an optical semiconductor has been developed for a street light. When the LED is used as a lighting means of the street light, the power supply can be supplied from an external power source. However, in general, since the street lamp is installed at a certain height from the ground, all or part of the power required for the use of the street lamp is advantageous for reducing energy supplied by, for example, a solar cell module.

Prior art related to streetlights using solar light is Patent Publication No. 2006-0034768, "Energy saving solar street light and its control method." The prior art is a solar cell for converting the incident sunlight into electric power, a charging unit for converting and charging the electrical energy converted from the solar cell into a constant current, a sensor unit for detecting the amount of light and the presence of pedestrians, The lighting unit is provided to emit light when supplied, the charging unit is a constant current output means for converting the electrical energy output from the solar cell into a constant current, a battery for charging the constant current output through the constant current output means, and the degree of charge of the battery And overcharge preventing means for sensing and controlling the constant current output means, and overdischarge preventing means for controlling the discharge of the battery by detecting a discharge degree of the battery. The lighting unit includes a plurality of LED lamps and the plurality of LEDs. Shape a plurality of slopes with different angles to which the lamps are fixed And a support bracket for supporting the rear surface of the support plate, the support plate being arranged at the same angle as the inclined surface of the support plate, and connected to the light emitting driver and the light emitting driver for outputting electric energy charged in the charging unit. Disclosed is a street light including a control unit controlling a light emitting driver to supply different levels of power to the lighting unit according to a light amount detection signal and a pedestrian detection signal applied from a sensor unit.

Another prior art related to solar streetlights is Patent Publication No. 2011-0119031, “Photovoltaic LED Street Light”. The prior art is a straight line as a whole, while the upper end is formed with a stepped upper end is formed in the upper side, coupled to the outside of the extension from the upper side of the support is settled on the stepped but irradiated so that light can be irradiated to the inside after the combination An irradiation tube made of a transparent material forming a space portion, an LED substrate coupled to an upper side of the irradiation tube and having a plurality of LEDs ring-arranged so as to irradiate light to the outer periphery of the support through the irradiation space portion, and positioned above the LED substrate. Connecting tube fixedly coupled to the part, the heat dissipation tube is fitted and fixed from the top of the connection tube to the outside, the solar cell plate is fitted and fixed by fitting the inner side from the top of the heat dissipation tube to produce electrical energy using solar energy Electricity installed on the posts and produced by the solar panel It is provided on the storage battery and the charging holding discloses a solar power LED street lamp comprising an inverter for converting the DC power charged in the storage battery to the AC power supply available in the LED light bulb.

Although known prior art discloses the use of solar energy or power generated from a solar cell module, it does not disclose a configuration or method that is suitable for the characteristics of the LED street light and in which the technical advantages of the solar cell module can be utilized. Do not.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art and has the following purpose.

An object of the present invention is a dye for controlling the operation of the street lamp by using the power characteristics appearing in the operation of the solar cell module and the power generated during the day and night power generation using a dye-sensitized solar cell It is to provide an LED street light that can be operated by using a sensitive solar cell module.

According to a preferred embodiment of the present invention, the LED street light is a dye-sensitized type consisting of a plurality of units each of which is rotatable about a rotation axis, each of which has a curved shape and the reflecting plate 112 is provided on one plane of each unit Solar cell module; An LED module, wherein each unit is installed to face the solar cell module and at least one LED element is arranged in each unit such that the LED module emits light into the unit of the corresponding dye-sensitized solar cell module; controller; A storage battery connected to the solar cell module; A sensor unit connected to the solar cell module and the LED module to generate a feedback signal; A comparator comparing the measured value with the predetermined value in the sensor unit and delivering the predetermined value to the control device; And a communication module capable of wired and wireless communication, and the light transmitted from the LED module is transmitted to the illumination region via a reflection plate installed in the dye-sensitized solar cell module.

According to another suitable embodiment of the invention, the comparator compares the preset voltage value with the feedback signal and transmits it to the control device.

According to another suitable embodiment of the present invention, the LED street light is a dye-sensitized solar cell that is capable of generating electromotive force by the sunlight and the LED light and is installed to be attached to the counter electrode and rotatable; At least one LED element disposed to transmit light emitted into the solar cell; controller; A comparator having a predetermined illuminance value according to time; A sensing sensor measuring a voltage generated from the solar cell and generating a signal and transferring the signal to a comparator; An illuminometer for measuring illuminance for measuring illuminance generated from the LED element and transmitting the illuminance to a comparator; A storage battery storing power generated from the solar cell; And a communication module capable of communicating with an external device and updating a preset illuminance value of the comparator, wherein the comparator compares the preset illuminance value with the measured illuminance value and transmits the measured illuminance value to the control device, and the control device is connected to the transmitted value. Accordingly, the output value of the LED device or whether the specific LED device emits light is determined.

Street light according to the present invention has the advantage that by applying the dye-sensitized solar cell module to the street lamp to enable the production of power in both day and night so that the power can be efficiently produced from the solar cell module. In addition, the street lamp according to the present invention has an advantage that the maintenance and management of the street lamp is easy by automatically controlling the operation. In addition, the street lamp according to the present invention has an advantage of easy maintenance of the street lamp through management of information on the operating state of the solar cell module and the street lamp.

Figure 1a shows an embodiment of a street lamp is installed with a dye-sensitized solar cell module according to the present invention.
Figure 1b shows an embodiment of the dye-sensitized solar cell and the LED device, respectively.
2 illustrates an embodiment of a process in which electromotive force is generated in a solar cell module applied to a street lamp according to the present invention.
3 schematically illustrates an embodiment of a device configuration of a street lamp according to the present invention.
4 illustrates an embodiment of an operation process of a street lamp according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

FIG. 1A illustrates an embodiment of a street lamp having a dye-sensitized solar cell module according to the present invention, and FIG. 1B illustrates an embodiment of a dye-sensitized solar cell and an LED device, respectively.

1A and 1B, an LED street light according to the present invention includes a plurality of units 111a, 111b, and 111c, each of which is rotatable about a rotation axis 114, and each unit 111a, 111b, and 111c. Dye-sensitized solar cell module 11, reflecting plate 112 is provided on one plane of the respective units 121a, 121b, 121c is installed to face the solar cell module 11 and at least one The LED module 12, the control device (C) arranged in the LED element, the storage battery 18 connected to the solar cell module 11, the solar cell module 11 and the LED module 12 is connected to generate a feedback signal The sensor unit 15, a comparator 16 for comparing the value measured in the sensor unit 15 and a predetermined value and transmits it to the control device (C) and a communication module 17 capable of wired and wireless communication, the LED Light transmitted from the module 12 is half installed in the dye-sensitized solar cell module. By way of the plate 112 it is transmitted to the illumination area.

The dye-sensitized solar cell module 11 may be composed of a plurality of units 111a, 111b, and 111c, and each unit 111a, 111b, and 111c may include at least one dye-sensitized solar cell. As shown in (a) of FIG. 1B, the unit 111 includes at least one cell 21 arranged in a predetermined shape to generate an electromotive force by light.

The unit body 111 may have a shape in which two curved surfaces forming a concave curved surface on one side thereof and a curved surface on which the other side is convex are extended while facing each other. The dye-sensitized solar cell 21 includes a transparent electrode 211 for inducing external light, a counter electrode 212 installed to face the transparent electrode 211, and a transparent electrode 211 and a counter electrode 212. It may be made of an electrolyte 213 filled in between. The transparent electrode 211, the counter electrode 212, and the electrolyte 213 may be made in various shapes using any material known in the art, and the present invention is not limited to the embodiments shown. The plurality of cells 21 may form the unit 111, and the plurality of units 111 may form the dye-sensitized solar cell module 11. Each solar cell 21 disposed in the solar cell module 11 is disposed such that the transparent electrodes 211 are in the same direction. In detail, the transparent electrode 211 may be disposed to form a concave curved surface of the unit 111. The counter electrode 212 of each solar cell 21 may be arranged to form a convex curved surface of the unit 111. The reflective plate 112 may be attached to the bottom of the surface on which the counter electrode 212 of the solar cell 21 is disposed or the convex curved surface of the unit 111. The reflecting plate 112 may be made of any material capable of reflecting light emitted from the LED elements 122a and 122b.

Each unit 111a, 111b, 111c of the dye-sensitized solar cell module 11 may be connected to each other to have a function of a cover of the LED module 12. In addition, the dye-sensitized solar cell module 11 may be installed in consideration of the incident angle of the sunlight according to the location where the street light is installed. In other words, the sunlight may be disposed to be incident on the surface of the transparent electrode 211 at an angle close to the vertical.

Units 111a, 111b, and 111c of each dye-sensitized solar cell module may be installed to be rotatable. Specifically, each unit 111a, 111b, 111c may be rotated by the rotation shaft 114, and the rotation shaft 114 may be, for example, a motor (not shown) driven by an external power source or its own power source. It can be operated by the same device. Rotation of the unit (111a, 111b, 111c) may be made in such a way that the unit (111a, 111b, 111c) is adjusted to suit the angle of the incident sunlight. In addition, the rotation of the unit (111a, 111b, 111c) is such that the transparent electrode 211 and the counter electrode 212 at different positions during the day and night. Specifically, the surface of the transparent electrode 211 should be disposed outside so that electromotive force is generated from the cell 21 during the day when the sun ray is present. On the other hand, since the cell 21 generates electromotive force by light emitted from the LED elements 122a and 122b at night, the transparent electrode 211 should be disposed to face the inner side or the LED module 12. As such, the rotation of the units 111a, 111b, and 111c is required to cause the transparent electrode 211 surface and the counter electrode 212 surface to be reversed with each other during the day and at night.

Electromotive force generated from the dye-sensitized solar cell module 11 may be transmitted to and stored in the storage battery 18 via a cell control unit 13 including a device such as a transformer. The cell control unit 13 properly converts the voltage generated from the solar cell module 11 through a device such as a transformer so as to enable power storage in the capacitor 18 and to block the connection when no electromotive force is generated. Can have And the capacitor 18 may be in any form known in the art and the present invention is not limited by the particular structure of the cell control unit 13 or the capacitor 18.

The plurality of dye-sensitized solar cell units 111a, 111b, 111c may be fixed by the fixing means 113.

The LED module 12 may be composed of a plurality of LED units 121a, 121b, 121c having at least one LED element 122a, 122b. Each LED unit 121a, 121b, 121c may be disposed to face the dye-sensitized solar cell module 11 or the units 111a, 111b, and 111c.

As illustrated in (b) of FIG. 1B, the LED unit 121 may include at least one LED element 122 and may be formed such that an upper surface on which the LED element 122 is disposed is a concave curved surface. The concave curved surface of the upper surface has an advantage that the light emitted from the LED element 122 can be easily introduced into the unit (111a, 111b, 111c) of the dye-sensitized solar cell module. In addition, an illumination lens 123 may be disposed outside each LED element 122, and a heat dissipation plate 124 may be disposed below each LED element 122. The illumination lens 123 may be a concave lens, a convex lens or a composite lens depending on the illumination position or purpose and the heat dissipation plate 124 may be any shape known in the art.

Light emitted from the LED module 11 may be incident on the dye-sensitized solar cell module 11 through the transparent electrode 211 to generate an electromotive force. The LED module 11 may be supplied with power from the battery 18 under control of the LED control unit 14 or from an external power source when the battery 18 is not sufficiently powered.

The controller C may control the rotation of the units 111a, 111b and 111c of the dye-sensitized solar cell module and control the operation of the LED module 12. Specifically, the control device C may control the driving of the entire street light.

The sensor unit 15 detects the voltage generated from the unit 111a, 111b, 111c or the cell 21 of each dye-sensitized solar cell module or detects illuminance to control the control device C or the comparator 16. Can be delivered to. The comparator 16 may compare the voltage or illuminance measured from the sensor unit 15 with a preset value and transmit the same to the control device C. FIG. The controller C may control the rotation angles of the units 111a, 111b, and 111c of the dye-sensitized solar cell module, the blinking or the output value of the LED module 12 according to the signal transmitted from the comparator 16. . The communication module 17 transmits data necessary for the management of the street lamp to the external device such as the management system or updates the preset value stored in the comparator 16 under the control of the control device C. Can receive data from an external device

The sensor unit 15, the comparator 16 or the communication module 17 are connected with the dye-sensitized solar cell module 11, the LED module 12 or the control device C in an appropriate manner to transmit or receive the necessary signals. can do.

Hereinafter, a process of generating electromotive force in a dye-sensitized solar cell will be described.

2 illustrates an embodiment of a process in which electromotive force is generated in a solar cell module applied to a street lamp according to the present invention.

2A illustrates an embodiment in which electromotive force is generated in the dye-sensitized solar cell 21 by sunlight, and FIG. 2B illustrates electromotive force in the cell 21 by the LED element 222. Each of these embodiments is shown.

Referring to (a) of FIG. 2, the cell 21 may be properly rotated and positioned according to the angle of incidence of sunlight, and sunlight is introduced into the electrolyte 213 of the cell 21 through the transparent electrode 211. By inducing a reaction, electrons are transferred to the counter electrode 212 so that an electromotive force may be generated in the cell 21. The generation of electromotive force of the cell 21 by the sunlight can be generated during the day of the sunny day. In this case, the reflecting plate 24 is positioned below or on the side where the LED module 22 is disposed.

Referring to (b) of FIG. 2, the positions of the transparent electrode 211 and the counter electrode 212 are reversed so that the transparent electrode 211 faces the LED module 22. The LED element 222 is fixed to a substrate 221 such as, for example, a printed circuit board, and the light emitted from the LED element 222 flows into the cell 21 through the transparent electrode 211 to form an electrolyte ( In 213), the reaction is induced to make the electrons excited. The electrons are transferred to the counter electrode 212 to generate an electromotive force in the cell 21. Light emitted from the LED element 222 may be reflected back to the reflecting plate 24 to be directed to the area where lighting is required. This process may be performed at night, cloudy day, or day when precipitation occurs when the LED module 22 operates.

The electromotive force generated in the cell 21 by sunlight or LED emission light may be stored in a capacitor as described above and used for driving a device associated with light emission or a street light of the LED module 22. The street lamp may be connected to an external power source, and external power may be used when the power generated by the cell 21 is not sufficient.

The operation of the apparatus related to the street lamp according to the present invention will be described.

3 schematically illustrates an embodiment of a device configuration of a street lamp according to the present invention.

Referring to FIG. 3, the control device 31 may control the rotation angle of the dye-sensitized solar cell module 32 for each time zone. The voltage may be measured by the voltage sensor 321 from the electromotive force generated in the solar cell module 32 according to each time period and transferred to the comparator 36 or the control device 31. On the other hand, the control device 31 controls the LED module 32 so that the lighting is made, and the peripheral illuminance according to the lighting of the LED module 32 is measured by the illuminometer 322 to control the control device 31 or the comparator. 36 may be passed. The illuminance value predetermined according to the time zone is stored in the comparator 36, and the electromotive force to be generated according to each time zone and the angle of the solar cell module 32 is stored. Values measured by the voltage sensor 321 and the illuminometer 322 for each time period may be transmitted to the control device 31 or the comparator 36. If the values transmitted from the voltage sensor 321 and the illuminometer 322 are not within the allowable range, the control device 31 controls the rotation angle of the solar cell module 32 or the output of the LED module 33. can do. Accordingly, the value measured by the voltage sensor 321 or the illuminometer 322 becomes a feedback signal FB and is transmitted to the control device 31 or the comparator 36 to be used as a control signal of the related device. Output control of the LED module 33 is possible, for example, by controlling the magnitude of the power flowing into the LED element or by controlling the number of LED elements to be lit.

The data generated during the control of the dye-sensitized solar cell module 32 or the LED module 33 may be stored in a storage medium attached to the control device 31 or through a communication module 35, for example, through a management system. Can be sent to. On the other hand, if the comparator 36 needs to update a preset value, related data may be transmitted from the management system to the communication module 35.

The control device C may determine whether the external power supply 37 is used by measuring the power stored in the battery 34, and the battery 34 may be a direct current (DC) type or an alternating current (AC) type. Storage battery 34 may include an inverter 341 for converting AC to DC or vice versa as needed.

Hereinafter will be described the operation of the street lamp according to the present invention.

4 illustrates an embodiment of an operation process of a street lamp according to the present invention.

Referring to FIG. 4, power may be generated by operating a dye-sensitized solar cell module to operate a street lamp according to the present invention (411). Power generated by the solar cell module during the day can be stored in the battery. In operation 412, a voltage signal according to generation of electromotive force may be detected by the voltage sensor at each time slot. If it is not time for the LED module to operate, but the generation of electromotive force by sunlight is not sufficient, the dye-sensitized solar cell module may be rotated (413). The LED module may be operated by the control device over time. In order to operate the LED module, the control device first detects the amount of power of the capacitor and determines whether the LED module can be operated for a predetermined time using self power (414). If the amount of power that can be operated for a certain time is not charged (NO), power is supplied from an external power source and at the same time, electromotive force is generated in the dye-sensitized solar cell module by light generated from the LED module. If the amount of power available to operate the LED module for a certain time (YES), the control device determines whether or not the dye-sensitized solar cell module. Specifically, the electrical connection between the storage battery and the dye-sensitized solar cell module may be blocked to prevent electromotive force from the dye-sensitized solar cell module. Alternatively, the degree of electromotive force can be controlled by changing the rotation angle of the dye-sensitized solar cell module. The voltage generated in such a control process may be measured and transmitted to the control device so that the feedback signal has a function.

The roughness by the operation of the LED module can be measured. The illuminance required for each time zone may be determined in advance, and it may be determined whether the value measured for the corresponding time zone is within an allowable range compared to the predetermined value (416). If the illuminance is not within the permitted range (NO), the rotation angle of the dye-sensitized solar cell module can be controlled. The measured illuminance again becomes a feedback signal and can be transmitted to the control device. On the other hand, if the measured illuminance value is within the allowable range (YES), electromotive force may be generated by the light emitted from the LED module. In addition, the change in illuminance according to the operation of the dye-sensitized solar cell module may be measured and transmitted to the control device as a feedback signal. In addition, the control device may control the rotation angle or operation of the dye-sensitized solar cell module according to the transmitted feedback signal.

The embodiment shown in FIG. 4 is exemplary and the operation of the street lamp according to the present invention may be controlled in various ways. For example, the feedback signal may be the temperature of the LED module or the solar cell module. In addition, dimming or blinking of the LED module may be controlled by the rotation angle of the dye-sensitized solar cell module as needed. As such, the present invention is not limited by the operation of the concrete street lamp.

Street light according to the present invention has the advantage that by applying the dye-sensitized solar cell module to the street lamp to enable the production of power in both day and night so that the power can be efficiently produced from the solar cell module. In addition, the street lamp according to the present invention has an advantage that the maintenance and management of the street lamp is easy by automatically controlling the operation. In addition, the street lamp according to the present invention has an advantage of easy maintenance of the street lamp through management of information on the operating state of the solar cell module and the street lamp.

Although described in detail above with reference to the embodiments of the present invention, those skilled in the art will be able to make various modifications and modifications to the invention without departing from the spirit of the present invention with reference to the embodiments presented. . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

11: dye-sensitized solar cell module 12: LED module
13: cell control unit 14: LED control unit
15: sensor unit 16: comparator
17: communication module 18: storage battery
21: dye-sensitized solar cell 22: LED module
111, 111a, 111b, 111c: dye-sensitized solar cell module unit
112: reflecting plate 113: fixing means
114: rotation axis 121a, 121b, 121c: LED unit
122a, 122b: LED element 123: illumination lens 124: heat dissipation plate
211: transparent electrode 212: counter electrode
213: electrolyte 221: substrate
222; LED element
31: control device 32: dye-sensitized solar cell module
33: LED module 34: storage battery
35: communication module 36: comparator
37: external power
321: voltage sensor 322: light meter
341: inverter
C: control device

Claims (3)

It is made up of a plurality of units (111a, 111b, 111c) each of which is rotatable about a rotation axis (114) and each has a curved shape and reflecting plate (112) on one plane of each unit (111a, 111b, 111c). Dye-sensitized solar cell module 11 is installed;
Each unit 121a, 121b, 121c is installed to face the solar cell module 11, and at least one LED element 122a, 122b is arranged in each unit to correspond to the unit of the dye-sensitized solar cell module ( An LED module 12 disposed to emit light into the interior of 111a, 11b, and 111c;
Control device C;
A storage battery 18 connected with the solar cell module 11;
A sensor unit 15 connected to the solar cell module 11 and the LED module 12 to generate a feedback signal;
A comparator 16 which compares the value measured by the sensor unit 15 with a predetermined value and transmits it to the control device C; And
It includes a communication module 17 capable of wired and wireless communication,
LED light is transmitted from the LED module 12, the LED street light of the operation control is possible, characterized in that transmitted to the lighting area via the reflecting plate 112 installed in the dye-sensitized solar cell module. The LED street light as claimed in claim 1, wherein the comparator compares the preset voltage value with a feedback signal and transmits it to the control device. A dye-sensitized solar cell 21 which is capable of generating electromotive force by sunlight and LED light, and which is installed such that the reflecting plate 24 is attached to the counter electrode 212 and is rotatable;
At least one LED element 22 disposed to transmit light emitted into the solar cell 21;
Control device 31;
A comparator 36 having a predetermined illuminance value according to time;
A sensing sensor measuring a voltage generated from the solar cell 22 to generate a signal and delivering the signal to the comparator 36;
An illuminometer measuring illuminance for measuring illuminance generated from the LED element 22 and transmitting the illuminance to the comparator 36;
A storage battery 34 storing power generated from the solar cell 21; And
A communication module 35 capable of communicating with an external device and updating a preset illuminance value of the comparator 36,
The comparator compares the preset illuminance value with the measured illuminance value and transmits the measured illuminance value to the control device 31. LED street light capable of operation control, characterized in that determining whether the light.

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