KR101791346B1 - Street lights having solar cell and hydrogen fuel cell, and energy harvesting system using the same - Google Patents

Abstract

The present invention relates to an integrated LED street light including a solar cell and a hydrogen fuel cell, and an energy harvesting system including the same. The street light includes a plurality of road lamps installed on the road, a thermoelectric module installed on a road underground, And a piezoelectric element module, wherein the streetlight includes: a strut; at least one LED lighting device installed on the strut; a solar cell module mounted on the strut top; a meteorological observing device mounted on the strut top; And a controller for electrically connecting and connecting the solar cell module, the illuminator, and the hydrogen fuel cell module to each other, wherein the rainwater reservoir is installed at an intermediate portion of the tower, The thermoelectric module and the piezoelectric element module are connected to each other by the control device of the streetlight, And it provides a solar cell and a fuel cell integrated LED street lights and road energy harvesting system for including them with a characterized in that for connection.

Description

TECHNICAL FIELD [0001] The present invention relates to an integrated LED street light including a solar cell and a hydrogen fuel cell, and an energy harvesting system for a road including the solar cell and the hydrogen fuel cell.

The present invention relates to an integrated LED street light including a solar cell and a hydrogen fuel cell, and an energy harvesting system including the same. More particularly, the present invention relates to an integrated LED street light including a solar cell and a hydrogen fuel cell, The hydrogen produced by the installed piezoelectric device is used to separate hydrogen from the rainwater stored in the street lamp and supply the separated hydrogen to the hydrogen fuel cell, thereby enabling the hydrogen fuel cell to generate electricity and supply it to the street lamp. An integrated LED street lamp having a battery, and an energy harvesting system for road including the same.

Energy harvesting technology is a technology that harvests small energy that is normally abandoned or not used and converts it into usable electric energy. Recently, it is attracting attention as a source of renewable energy.

These types of energy harvesting include body energy harvesting using body temperature, static electricity and kinetic energy generated through body movement, light energy harvesting using sunlight, vibration energy harvesting to generate piezoelectric elements by applying vibration or pressure, Air pressure pumps are installed in electric energy harvesting, which uses electromagnetic energy such as broadcast radio waves or mobile phone radio waves, speeding brakes on roads, and pedestrian crossing stoppages, by using heat energy harvesting, which uses a lot of waste heat generated from industrial sites, And the energy of the position energy harvesting using the difference of the position energy generated in the water discharge hole of the hydroelectric power plant and the water discharge passage of the thermal power plant can be divided into the gravity energy harvesting which compresses the air by using the weight of the air,

Among them, energy harvesting technology, which can be used on roads in general, is light energy harvesting technology that uses sunlight to illuminate street lights. However, in the case of the conventional street light using the solar light, when the sunlight is not enough, that is, when the sunlight is insufficient in the winter, or when the sunlight can not sufficiently reach the solar cell due to rain or mist, There is a disadvantage in that the energy conversion efficiency is not so excellent to actually operate the streetlight because the amount of electric power generated is not sufficient.

In the case of vibration energy harvesting in which a piezoelectric element is buried in a road and power is generated by vibration or pressure generated by a vehicle, when power is generated using only a piezoelectric element, the generation amount is insufficient as described above, It is not suitable for the following reasons.

A related prior art is Korean Patent No. 10-1189089 (registered on October 10, 2012).

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a street lamp having a solar cell mounted on a top thereof, in which an LED lamp having low energy consumption is used as a light source of a street lamp, And an object of the present invention is to provide an integrated LED street light including a solar cell and a hydrogen fuel cell that can minimize the energy consumption of the street lamp by controlling the brightness of the light source by sensing the intensity of the light.

In the present invention, a piezoelectric sensor module is installed in a road around a streetlight or under a car, a storage space capable of storing rainwater is provided in the middle of the street lamp, and a hydrogen fuel cell , The piezoelectric sensor first generates electricity and the first-produced electricity separates and stores the hydrogen. Thereafter, the hydrogen fuel cell reacts with the stored hydrogen to generate electricity. And an object of the present invention is to provide an integrated LED street light including a solar cell and a hydrogen fuel cell that can be produced and stored, and a road harvesting system including the same.

The present invention also relates to a solar cell and a hydrogen fuel cell which are equipped with a weather-related sensor on the street lamp and a communication device capable of transmitting data collected from the sensor to the outside, And an object of the present invention is to provide a road harvesting system including the same.

The present invention also relates to a solar cell and a hydrogen fuel cell which can prevent freezing of a road surface in winter by embedding a thermoelectric element in a road around a streetlight or under a streetlight and radiating heat by a peltier effect of a thermoelectric element, And an object of the present invention is to provide a road harvesting system including the same.

The present invention further provides a solar cell and a hydrogen fuel cell which can prevent the deterioration of the performance of a street lamp or the damage caused by a pest by causing a light of a wavelength capable of eliminating insects to be emitted to the LED light source, And an object of the present invention is to provide a road harvesting system including the same.

The present invention also relates to an integrated LED street light including a solar cell and a hydrogen fuel cell that can prevent light pollution by controlling the brightness by interlocking the LED light source with a gas-phase related sensor, The present invention is directed to provide a road harvesting system including a road.

In addition, the present invention is intended to provide an independent and independent development function in case of a problem in a power supply system in the case of a natural disaster such as a tsunami or a typhoon, an exhibition, an incident or an emergency, The present invention provides an integrated LED streetlight and a roadside harvesting system including the same.

The technical objects to be achieved by the present invention are not limited to the above-mentioned technical problems.

According to an aspect of the present invention, there is provided an integrated LED street light including a solar cell, a hydrogen fuel cell, and an energy harvesting system for road including the same. The street light includes a plurality of road lamps installed on the road, And a piezoelectric element module, wherein the streetlight includes at least one of a strut, at least one LED lighting device installed in the strut, a solar cell module mounted on the upper end of the strut, And a hydrogen fuel cell module mounted on a lower portion of the strut, and a controller for electrically connecting and connecting the solar cell module, the illuminator, and the hydrogen fuel cell module to each other And a control device, wherein the thermoelectric module and the piezoelectric module are connected to the control device of the streetlight Thereby connecting the hydrogen fuel cell to the hydrogen fuel cell.

Specifically, the control device of the streetlight is characterized in that the streetlight is connected to the outside of the streetlight so that the electric power generated or charged by the streetlight can be used by an external customer.

Specifically, the hydrogen fuel cell module includes a power generator for generating electricity by generating hydrogen by supplying electricity from the piezoelectric element module and electrolyzing the rainwater stored in the rainwater reservoir to generate electricity, And a battery unit for storing the battery.

Specifically, when the surface temperature of the road falls below a predetermined value, the thermoelectric module is supplied with electricity from the hydrogen fuel cell or the solar cell module to dissipate heat.

Specifically, the LED illumination device is characterized in that the LED illumination device emits light in a wavelength band that pests do not like.

Specifically, the meteorological observing apparatus further includes a fine dust detecting sensor for detecting minute dust and a communication device for transmitting and receiving collected data to / from the outside.

As described above, since the solar cell module and the hydrogen fuel cell module are mounted on the street lamp and the piezoelectric element module is mounted on the underground of the streetlight, the electricity generated by the solar cell module is filled in the daytime, [0031] After the electricity generated by the module is electrolyzed to generate and store hydrogen, when the night or the street light needs to be turned on, the LED lighting device is operated using the stored electric power, Since the hydrogen fuel cell module generates electricity to operate the LED lighting device of the streetlight, the electric power can be supplied in a double manner, and the streetlight can be efficiently operated.

In addition, since the module capable of controlling the power generated by the hydrogen fuel cell so as to be used solely in the external customer is mounted on the ground surface at the lower end of the streetlight, the present invention can be applied to a case where natural disaster, It is possible to utilize the power as an emergency power in a customer who has a problem in the power supply system.

In addition, since the brightness of the LED lighting device of the streetlight is controlled according to the brightness of the surroundings by attaching the illuminance sensor to the upper part of the streetlight, it is possible to save electricity consumed in the streetlight, It has the effect of reducing pollution.

In addition, since the present invention can mount the weather observation device on the streetlight and then collect the collected data, it is possible to utilize the detailed weather information in the surrounding area where the streetlight is installed.

In addition, since the wavelength of the light emitted from the LED lighting apparatus is set to a wavelength that does not like the pest, the streetlight has a pest control effect to prevent the intensity of the streetlight light from being lowered by insects pesting on the streetlight It is possible to reduce the cost and maintenance cost of the street lamp.

In addition, since the thermoelectric module connected to the hydrogen fuel cell module is buried in the road around the streetlight or in the underground of the streetlight, the heat is dissipated when the surface temperature of the road falls below a certain value, It is possible to prevent ice from being frozen.

1 is a perspective view illustrating an integrated LED street light including a solar cell and a hydrogen fuel cell according to an embodiment of the present invention, and a road energy hubbing system including the same.
2 is a right side view of the integrated LED streetlight shown in Fig.
3 is a left side view of the integrated LED streetlight shown in Fig.
4 is a plan view of the integrated LED streetlight shown in Fig.
FIG. 5 is a perspective view of the hydrogen fuel cell module shown in FIG. 1. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference symbols whenever possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 1 is a perspective view showing an integrated LED street light including a solar cell and a hydrogen fuel cell according to an embodiment of the present invention, and an energy harvesting system including the same, FIG. 2 is a right side view FIG. 3 is a left side view of the integrated LED streetlight shown in FIG. 1, and FIG. 4 is a plan view of the integrated LED streetlight shown in FIG. 1, showing a solar cell and a hydrogen fuel cell according to an embodiment of the present invention An integrated LED street light and an energy harvesting system for a road including the street light include a street light 100 installed at a predetermined distance on the roadside, a thermoelectric module 200 embedded in a road underground around the streetlight, ).

A plurality of streetlights 100 are installed at predetermined intervals on the road or a side of the street. The streetlights 100 include a support 110, one or more LED lighting devices 120 installed on the support 110, A communication device for transmitting and receiving data collected from the meteorological observing device 140 and a communication device for transmitting and receiving data collected from the meteorological observing device 140. The supporting device 110 includes a solar cell module 130 mounted on the support 110, A hydrogen fuel cell module 170 mounted at a lower end of the strut 110 and a solar cell module 130 connected to the solar cell module 130 and the lighting device and the hydrogen fuel cell module 170 And a switching module embedded in the periphery of the support 110 to control the electric power generated and charged by the streetlight 100 in an emergency so as to be supplied to an external customer .

The column 110 is a tubular structure having an empty interior, and has a height of a typical street lamp 100 column 110.

The LED lighting device 120 is installed at the end of one or more columnar structures extending from the column 110, and includes a power source unit, an LED unit, and a control unit. The power source unit, the LED unit, and the control unit And may be installed in the enclosure of the headlight of the LED lighting apparatus 120 or may be installed in the connecting portion where the LED lighting apparatus 120 is connected to the support 110, In addition, the illuminance sensor mounted on one side of the streetlight 120 may be connected to the LED illuminating device 120.

The power unit receives power from the solar cell module 130 and the hydrogen fuel cell module 170 to operate LEDs of the LED unit.

The controller controls the LED unit so that the wavelength of the light emitted from the LED unit can be varied. When the light intensity becomes dark according to the illuminance sensor to be described later, the LED unit can emit a wavelength of light suitable for pest control. For example, in the case of a mosquito, the wavelength of 600 nm to 670 nm is diverted because it hates the wavelength of yellowish red. The control of such a wavelength can be adjusted to suit the situation in each area where the streetlight 100 is installed. As a result, the LED lighting apparatus 120 can prevent the pests such as moths, mosquitoes, ferns, and the like from flocking to the LED lighting apparatus 120 when emitting light.

In addition, the control unit may receive the data of the weather observing apparatus 140 or the illuminance sensor, which will be described later, and adjust the output of the LED illuminating apparatus 120 according to the degree of brightness of the surroundings. That is, according to the illuminance sensor mounted on a part of the streetlight, when the surroundings are bright like a downtown area, the output of the LED illuminating device 120 is weakened, so that the power consumed can be reduced and the light pollution due to excessive light can be prevented .

The size and the shape of the solar cell module 130 may be appropriately determined in consideration of the condition of the strut 110 of the streetlight 100, Make the plate form. In particular, since the solar cell module 130 is mounted on the upper end of the strut 110, the solar cell module 130 is inclined so as to prevent the solar cell module 130 from being damaged due to strong or gusty winds.

The meteorological observing apparatus 140 is installed at the upper end of the strut 110, and allows the collected information to be transmitted / received to / from the outside. The weather observing apparatus 140 is composed of sensors capable of collecting various weather related data. Examples of the weather observing apparatus 140 include an anemometer, a temperature measuring sensor, a humidity measuring sensor, a barometric measuring sensor, a precipitation detecting sensor, A dust sensor, and the like. The data collected from these are transmitted to the communication device described later.

The communication device transmits the data collected by the weather observation device 140 to the various local collection devices through the communication network and further sends the data to the weather information system or the weather service server so that the accurate weather observation of the area where the streetlight 100 is installed So that it can be utilized as data. In addition, in the case of the above communication network, a wired and wireless communication network is all possible, and they may be connected to the Internet through these communication networks, or may be used close to the streetlight 100 by using Bluetooth or the like.

In the embodiment of the present invention, two rainwater storages 160 are installed at the middle portion of the pillar 110. In this embodiment, two rainwater storages 160 are installed with the pillar 110 interposed therebetween. However, It is possible. The rainwater reservoir 160 is connected to a hydrogen fuel cell module 170, which will be described later, so that rainwater transferred through the pipe is electrolyzed by the hydrogen generator of the hydrogen fuel cell module 170 to generate hydrogen do. The tube may be mounted inside the column 110 or may be mounted on the outside (not shown).

5 is a perspective view of the hydrogen fuel cell module shown in FIG. 1, wherein the hydrogen fuel cell module 170 is partially or completely exposed at the lower end of the support 110, that is, And can be mounted to be buried. The upper portion of the hydrogen fuel cell module 170 is connected to the rainwater reservoir 160 through a pipe and is electrically connected to the LED lighting device 120. The lower portion of the hydrogen fuel cell module 170 may be connected to the piezoelectric element module 300 and the thermoelectric module 200 buried in the vicinity of the streetlight 100. Finally, the control device is connected to the control device so that the control device can control the operation of the hydrogen fuel cell module 170.

The hydrogen fuel cell module 170 includes a battery unit 171 and a power generation unit 172. The power generation unit 172 generates electricity by electrolyzing the rainwater stored in the rainwater storage unit 160, And a generator for generating electricity by reacting the generated hydrogen with the oxygen in the air. The power generation unit 172 may be a charger that stores power generated by the power generation unit 172. [

In particular, the hydrogen fuel cell module 170 generates electric power at a time when the LED lighting device 120 of the streetlight 100 is not turned on, stores the electric power in the electricity storage unit 171, It is possible to replace the power required for the streetlight 100 by replacing the solar cell module 130 and the hydrogen fuel 120. In addition, Since the battery module 170 does not discharge carbon dioxide, it has an eco-friendly effect.

The control device is connected to the solar cell module 130, the weather observation device 140, the communication device, the rainwater storage 160, and the hydrogen fuel cell module 170, which are components mounted on the streetlight 100, 100 and a piezoelectric element module 300 connected to the thermoelectric module 200 buried in the underground of the road around the road 100 to control operation of the street light 100, distribution of electric power, communication with the outside, and the like. Although not shown in the drawings, such a control device may be mounted inside the streetlight 100, or may be mounted outside the streetlight 100.

The switching module is buried around the support 110 and connected to a control device of the streetlight 100 to control the electric power generated and charged in the streetlight 100 to be supplied to an external customer. Although not shown in the drawing, the switching module may also be embedded in the interior of the streetlight 100, as shown in the above description, in the embodiment of the present invention, Of course.

In addition, the switching module may be connected to a customer, such as a hospital, a fire station, or the like, located near the streetlight 100. When a problem arises in the power supply system connected to the customer in the event of a natural disaster such as a tsunami, a typhoon, an earthquake or the like, or an emergency such as an exhibition, an incident, or the like, the switching module is operated manually or automatically, 100 to the customer.

That is, an integrated LED street light and an energy harvesting system for road use, which are an embodiment of the present invention, allow a customer such as a nearby hospital or a fire station to individually utilize power generated or stored in the integrated LED streetlight in an emergency, Road energy harvesting system can be utilized as a single electric power generation facility.

The thermoelectric module 200 and the piezoelectric module 300 are installed in the vicinity of the road where the streetlight 100 is installed so that one or more of the thermoelectric module 200 and the piezoelectric module 300 are connected to the hydrogen fuel cell and controlled by the controller do.

The thermoelectric module 200 is made of a pair of a semiconductor material having a large Peltier effect such as vidermustelide, antimony alloy, or the like. When a different kind of metal wire is connected and a current is passed through the connection point, generation or absorption of heat other than the jellows appears at the connection portion. This heat effect is reversible, reversing the direction of the current, the generation of heat becomes absorption, and the absorption of heat changes into generation. When the surface temperature of the road falls below a certain value, the thermoelectric module 200 receives electricity from the hydrogen fuel cell module 170 or the solar cell module 130 to radiate heat, Thereby preventing the road or the surface of the road from freezing. As described above, the thermoelectric module 200 connected to the streetlight 100 can replace the use of calcium chloride, which has been used when the road is frozen or snowy, and thus can reduce environmental pollution. Further, since the material constituting the thermoelectric module 200 is not a general copper wire but a semiconductor utilizing the Peltier effect, the temperature can be rapidly increased and decreased.

The piezoelectric element module 300 is a device using piezoelectric ceramics or the like which generates a voltage when a mechanical stress is applied and a distortion occurs when a voltage is applied thereto. The piezoelectric element module 300 has a property that a voltage changes when a pressure is applied, Respectively. That is, the piezoelectric element can convert mechanical energy such as vibration into electrical energy. Therefore, the piezoelectric element module 300 is buried near the surface of the road and generates electricity through vibration and pressure generated by passage of a vehicle or a person. In particular, in one embodiment of the present invention, the piezoelectric element module 300 transmits electricity generated each time electricity is generated to the hydrogen fuel cell module 170 to electrolyze the rainwater to generate hydrogen . Since the electricity supplied to the street light 100 does not have to be dependent on the solar cell module 130 only when the electricity generated using the hydrogen generated by the piezoelectric element module 300 is used, There is also an effect of increasing efficiency.

Hereinafter, the operation of the integrated LED street light including the solar cell of the present invention and the hydrogen fuel cell constructed as above, and the energy harvesting system for road including the same will be described.

First, the solar cell module 130 and the piezoelectric element module 300 generate electricity principally. Specifically, the solar cell module 130 of the streetlight 100 continuously generates and stores electricity during the daytime And the piezoelectric element module 300 continuously generates electricity by using vibration and pressure generated by a passing vehicle or a person and transmits the generated electricity to the hydrogen fuel cell module 170.

Next, in the hydrogen fuel cell module 170, electricity generated in the piezoelectric element module 300 or the solar cell module 130 is used to electrolyze the stored rainwater to generate hydrogen, and the generated hydrogen is stored.

Then, when the ambient light sensor of the weather observing apparatus 140 senses that the night is dark or the surroundings are dark due to the weather condition, the controller transmits a signal to the control unit of the LED lighting apparatus 120, Thereby operating the LED lighting apparatus 120. [

At this time, the electric power used to drive the LED lighting device 120 is the electric power generated and stored by the solar cell module 130 during the daytime, and then the electric power that is charged by the solar cell module 130 If the power is insufficient, the hydrogen fuel cell module 170 reacts with the stored hydrogen to produce electric power.

The weather observing device 140 installed at the upper end of the street light 100 continuously senses weather-related data around the streetlight 100, collects data, and transmits the data to the control device. Then, the control device drives the LED lighting device 120 at an appropriate time, transmits the collected data to the outside by the communication device, or senses snow or rain, and when the temperature falls below a certain level, It is sent to the element module 200 to prevent freezing of roads and roads.

As described above, according to the present invention, solar energy, vibration energy, and the like, which are small amounts of energy that are routinely discarded including the solar cell module 130, the hydrogen fuel cell module 170, and the piezoelectric element module 300, It saves energy and is environmentally friendly because it uses hydrogen fuel cell.

In addition, since the module capable of controlling the power generated by the hydrogen fuel cell so as to be used solely in the external customer is mounted on the ground surface at the lower end of the street lamp 100, the present invention can be applied to a natural disaster, It is possible to utilize the electric power as emergency power in a customer who has a trouble in the electric power supply system in an emergency.

The brightness of the LED lighting device 120 of the streetlight 100 is controlled according to the surrounding brightness by mounting an illuminance sensor on the streetlight 100 so that the electricity consumed by the streetlight 100 It has the effect of saving and the effect of reducing light pollution generated in the city center.

In addition, since the present invention can mount the weather observation device 140 on the upper part of the streetlight 100 and then transmit the collected data to the outside, detailed weather information can be utilized in the surrounding area where the streetlight 100 is installed There is an effect to be able to.

In addition, since the wavelength of light emitted from the LED lighting device 120 is a wavelength having a length that the insect does not like, the present invention has the insect repellent effect. Therefore, It is possible to prevent the strength of the streetlight 100 from decreasing and the maintenance cost of the streetlight 100 to be reduced.

In the present invention, the thermoelectric module 200 connected to the hydrogen fuel cell module 170 is installed on the road or the vicinity of the streetlight 100 so that heat is emitted when the surface of the road falls below a predetermined value , It is possible to prevent the surface of the road from freezing in winter.

The integrated LED street lamp including the solar cell and the hydrogen fuel cell, which is one embodiment of the present invention, and the energy harvesting system for the road including the integrated LED streetlight are not limited to the configuration and the operation method of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

100: street lamp 110: holding
120: LED lighting device 130: solar cell module
140: weather observation device 160: rainwater storage
170: hydrogen fuel cell module 171:
172: power generation unit 200: thermoelectric module
300: piezoelectric element module

Claims (6)

An integrated LED street light including a solar cell and a hydrogen fuel cell including a thermoelectric module and a piezoelectric element module installed in a road underground in the vicinity of the streetlight, and an energy harvesting system for road including the same As a result,
The streetlight includes:
And a rainwater reservoir installed at an intermediate portion of the strut, wherein the rainwater reservoir is installed at an upper portion of the strut, A hydrogen fuel cell module mounted on a lower portion of the column, and a controller for electrically connecting and connecting the solar cell module, the illumination device, and the hydrogen fuel cell module,
The thermoelectric module and the piezoelectric element module are arranged such that,
And an integrated LED street lamp including a solar cell and a hydrogen fuel cell, wherein the LED lamp is connected to the hydrogen fuel cell by a control device of the streetlight.
The method according to claim 1,
Wherein the control unit of the streetlight is connected to the outside of the streetlight such that electric power generated or charged by the streetlight can be used by an external customer. Energy harvesting system.
The method according to claim 1,
The hydrogen fuel cell module includes a power generation unit that receives electricity from the piezoelectric element module and generates electricity using hydrogen generated by electrolyzing the rainwater stored in the rainwater storage to generate hydrogen, And an integrated LED street lamp with a hydrogen fuel cell.
The method according to claim 1,
Wherein the thermoelectric module is supplied with electricity from the hydrogen fuel cell module or the solar cell module to dissipate heat when the surface temperature of the road falls below a predetermined value. Energy harvesting systems for roads including.
The method according to claim 1,
Wherein the LED lighting device is adapted to emit light in a wavelength band that pests are disliked to include an integrated LED streetlight with a solar cell and a hydrogen fuel cell.
The method according to claim 1,
The meteorological observing apparatus includes a solar cell including a fine dust detecting sensor for detecting fine dust and a communication device capable of transmitting and receiving data to and from the outside, and an integrated LED street light including a hydrogen fuel cell. system.

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