KR20190120917A - An Energy Reduction Type LED Channel Signboard Using LED Light - Google Patents

Abstract

The present invention relates to an energy reduction type LED channel signboard. The LED channel signboard has floor having a shape such as a figure or a character, a side wall extending upward while maintaining the shape of the floor, and a plurality of LED lighting units and a plurality of photovoltaic cells inside a three-dimensional shape formed by the floor and side wall. The LED lighting units using commercial power condenses illumination light used for illuminated channel sign on light receiving surfaces of the photovoltaic cells, and use electromotive force of the photovoltaic cells.

Description

An Energy Reduction Type LED Channel Signboard Using LED Light}

The present invention relates to an energy-saving LED channel signage, and more particularly, to an energy-saving LED channel signage using power generated by developing a solar cell with LED illumination light.

Signboard characters, which are fixed to the walls of buildings and display desired letters or figures, are widely used because they have a propaganda effect. The signboard character is a signboard body, which is generally formed in a letter shape representing a store name or a trademark of a product and fixed to a wall surface or the like. The signboard of this structure is installed protruding from the wall and is displayed in a prominent state with a perspective when viewed from a distance. Light sources such as light bulbs and LEDs (light emitting diodes), which can improve visibility inside or on the surface thereof, are disposed.

At night, light bulbs are arranged at predetermined intervals with a light source inside the sign character in order to enhance visibility of the sign character. In the signboard which uses a bulb as a light source, the filament of the bulb is broken after a certain period of time and needs to be replaced. Bulbs using filaments have a very short lifespan compared to light emitting diode (LED) light sources. Signboard characters are used for a long time almost every night, so when using a light bulb as a light source for dimming, the frequency of replacement is increased. Replacing a bulb is not only costly, but also time consuming. Sign letters are often installed in high places such as walls, it is difficult to replace the bulb easily. Therefore, the signboard character using the bulb is difficult to use in special applications.

As a light source embedded in the signboard, a long-life light emitting diode (LED) is used instead of the filament bulb. A light emitting diode (LED) can obtain high luminance with low power consumption, and a light emitting diode (LED) energizes electrons by flowing a current through a laminated semiconductor layer having a completely different light emission principle from a light bulb which heats a filament to emit light. And emit light to have a very long life like other semiconductor devices. Therefore, there is almost no need to replace the light emitting diode (LED) built in the sign body. The light emitting diode (LED) lighting device can be arbitrarily configured by combining a plurality of individually, so the design freedom is high.

The photovoltaic system that supplies the power produced by the solar cell module to the light source unit is attracting attention as a renewable energy utilization technology. In order to use the solar system independently for sign letters, a space for solar cell modules must be provided on the wall of a building. While the attitude of the solar cell module supported by the support device is constant throughout the year, while the altitude of the sun varies from season to season, the tracking system increases the incident amount to the light receiving surface by varying the angle of the light receiving surface of the solar cell module by season. The amount of power can be increased. The introduction of a tracking system has a problem that the purchase cost and maintenance cost become large.

In the commercial area of the downtown area, the front of the building is located in different directions along the road leading to the north, south, east and west. The front part of most buildings has little sunshine. The independent solar cell module fixed to the front part of the building cannot produce the electrical energy required by the light source part of the signboard, and it is rainy even when the front part of the building has a certain amount of sunshine. In the weather conditions, such as a cloudy day after the sunset, weak sunlight, there is a problem that the independent solar cell module can not produce the required electrical energy as a useless.

KR 10-1038499 B1 KR 10-1350773 B1 KR 10-1164073 B1 KR 10-1285608 B1

The present invention is to solve the above problems, after rainy weather or at sunset, the sun receives a light of the LED light unit used as an illumination light in the channel sign fixed to the wall of the building on the cloudy day and weak sunlight without light sunlight An object of the present invention is to provide an LED lighting unit with the power generated by generating a solar cell by the light receiving surface and light receiving of the battery.

The problem to be solved by the present invention is not limited to the above-mentioned problem. Other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

Energy-saving LED channel signage according to the present invention for solving the above problems and achieves the object is a floor having a shape, such as a figure or a character, the side wall is formed to extend the top while maintaining the shape of the bottom, the bottom and the side wall In the LED channel signage consisting of a plurality of LED lighting unit and a plurality of solar cells inside the three-dimensional shape formed of,

The LED lighting unit using the commercial power is characterized in that the LED lighting unit uses the electromotive force of the solar cell by condensing the illumination light to the light receiving surface of the solar cell as the illumination light used for the internal lighting channel sign.

Preferably, the solar cell element of the solar cell is characterized in that it comprises a pn junction to single crystal silicon.

Preferably, the solar cell element of the solar cell is characterized in that it is composed of a dye-sensitized solar cell using a light absorbing layer, the dye is adsorbed.

Preferably, the light absorption layer is applied to the inside of the three-dimensional shape.

Preferably, the solar cell device of the solar cell is characterized in that the CZTS-based compound thin film solar cell having a light absorption layer containing Cu, Zn, Sn, S and Se. Preferably, the solar cell device of the solar cell is characterized in that it is composed of a perovskite solar cell having a compound having a perovskite crystal structure as a light absorption layer.

Preferably, the compound is chemical composition formula ABX ₃ A is a monovalent cation, B is a divalent cation, X is characterized in that the perovskite solar cell consisting of a halogen anion.

Preferably, the light absorption layer is characterized in that to produce the electromotive force by the condensing of the illumination light.

According to the present invention configured as described above, the solar cell is illuminated by the light source of the LED unit powered by commercial power, and installed as light in the visible light region of the LED light source irrespective of climatic conditions such as sunshine time, sunshine amount and sun altitude. Electric energy is generated from the solar cell, and power stored in the solar cell power storage unit can be supplied to the LED unit.

In particular, after sunset there is an advantage that the electrical energy can be produced from the solar cell installed as the light receiving surface of the solar cell receiving the illumination light of the surrounding signage as well as the illumination light of the LED unit inside the three-dimensional signboard character.

Referring to the detailed description items and claims for carrying out the invention together with the accompanying drawings, various objects and advantages of the present invention will become clear and the present invention will be more readily understood. Where the same numerals are indicated in different figures, this case refers to the same or similar components or steps.
1 is a perspective view according to a first embodiment of the present invention, which is an embodiment of an energy-saving LED channel signboard of the letter "CA" shape.
2 is a cross-sectional view of the energy-saving LED channel signage according to an embodiment of the present invention.
Figure 3 is a perspective view according to a second embodiment of the present invention, an embodiment of the energy-saving LED channel signboard of the letter "CA" shape.
4 is a plan view of a housing of the LED lighting unit according to the embodiment of the present invention.
5 is a circuit diagram of a circuit board of the LED lighting unit according to the embodiment of the present invention.
6 is a plan view showing a light receiving surface of a solar cell according to an embodiment of the present invention.
FIG. 7 is a perspective view of the solar cell panel to which the electrode of FIG. 6 is attached.
8 is a plan view of a solar cell panel with a plurality of electrodes attached thereto.

An exemplary embodiment will be described. Other embodiments may additionally or instead be used. Obvious or unnecessary contents may be omitted for space saving and more efficient expression. Conversely, some embodiments may be practiced without using all of the disclosed details.

Hereinafter, the most preferred embodiment of the energy-saving LED channel signage of the present invention will be described in detail with reference to the accompanying drawings.

As illustrated in FIGS. 1 to 8, the sign text in the energy-saving LED channel signage 500 has a three-dimensional shape with a bottom 400, a sidewall 450, a floodlight (not shown), and a reflector (not shown). It is composed of a plurality of LED lighting unit 100, a plurality of solar cells 300. LED channel signage 500 is the light emitted from the LED (L ¹ , L ² ,, L ⁿ ) mounted on the LED lighting unit 100 attached to the inner side of the side wall is reflected to the front through a reflecting plate to the surface of the light emitting It is intended to represent shapes such as figures or characters in the form.

The floor 400 is configured to have a shape such as a figure or a character. The floors are either individually attached directly to the exterior walls of the building or via an intermediate frame or intermediate panel.

As the material of the floor, various known materials used for the channel signage may be used. Typically, synthetic resin materials such as PC (polycarbonate) or metal materials such as lightweight aluminum are used.

The side wall 450 is a place where the LED light unit 100, which is the illumination light 111, and the solar cell 300 are attached, and correspond to the support of the LED channel signage 500 having a three-dimensional shape.

The LED lighting unit 100 houses a circuit board (PCB, not shown) including the LEDs L ¹ , L ² ,,, and L ⁿ in the housing 140, and supplies commercial power to the wire 150. The light emitted by the LEDs L ¹ , L ² , and L ⁿ is used as the illumination light 111 by feeding power.

Instead of being electrically connected by soldering the circuit board, the electric wire 150 for supplying power is in close contact with the bottom of the circuit board, and then inserts a conductive screw into the groove for power input of the circuit board, and then ends the wire 150. Install by tightening to penetrate. In this way, the conductive screw is electrically connected to the pattern of the circuit board and the wire 150 at the same time.

The circuit board may be implemented using the circuit diagram shown by way of example.

One or more LEDs 11, transistors Tr. 15, and resistors R, 16 are soldered to the insertion holes on the circuit board, each of which is electrically connected in a pattern on the circuit board. A circuit diagram of a circuit board implemented using two LEDs 11 according to which the input current is branched into three places, each of which is connected to the LEDs 11 and then joined again, through the collector of the transistor 15 to emitter. The output is connected to the resistor again, and the other one is connected to the collector of the transistor through the resistor and then output to the emitter. Meanwhile, it can be seen that the base of the transistor is connected between the resistor and the transistor, and the base of another transistor is connected between the transistor and the resistor.

The solar cell 300 includes a photoelectric conversion unit (not shown) that receives and receives the illumination light 111 of the LED lighting unit 100 and generates a frame (not shown) that supports the solar cell (solar panel). It is composed. The solar cell is a plurality of solar cells arranged on the light receiving surface 300a side of the transparent transparent substrate (not shown), and arranged at regular intervals in series or in parallel on the back side of the transparent substrate to convert the light energy into electrical energy A solar cell array in which cells are arranged side by side is formed.

Here, the solar cell is a semiconductor device that converts light energy into electrical energy, and there are a silicon solar cell, a compound semiconductor solar cell, a stacked solar cell, an organic solar cell, and the like.

Solar cells based on silicon are classified into monocrystalline silicon solar cells, polycrystalline silicon solar cells, and amorphous silicon solar cells. Among them, the single crystal silicon solar cell is cut into a wafer shape with a wire saw, processed into a wafer having a thickness of 100 to 200 μm, and a pn junction electrode and a protective film are formed on the single crystal silicon to form a solar cell. To make.

Silicon solar cells use expensive large equipment at the time of manufacture, and the manufacturing cost is high because the raw material price is high. In addition, there have been many difficulties in improving the efficiency of converting light energy into electrical energy. There is an increasing interest in solar cells using inexpensive organic materials. In particular, dye-sensitized solar cells with significantly lower manufacturing costs are receiving great attention.

Dye-sensitized solar cell is a photoelectrochemical solar cell comprising a transparent electrode and a dye, adsorbed on the surface of the semiconductor membrane of the porous semiconductor membrane consisting of nanoparticles attached to the transparent electrode and a redox electrolyte filled in the space between the two electrodes. . The metal oxide semiconductor film used in the dye-sensitized solar cell has a very large surface area, and has a merit that the light absorption efficiency of the battery is high because the dye can be adsorbed on the surface thereof. In order to achieve the high electromotive force of the photovoltaic device, the light absorbing layer needs to absorb the light energy as much as possible. The light absorbing layer is formed of a porous metal oxide semiconductor having a large surface area, and it is preferable to adsorb dye into the pores. The light absorbing layer is a material that can be applied to the inside of the three-dimensional shape of the channel sign, which is a signboard character, to simplify the process. The light absorbing layer is preferably formed of at least one metal oxide selected from the group consisting of oxides of titanium, niobium, hafnium, indium, tin and zinc. More preferably, it is titanium oxide.

Compound thin film solar cells have a layer made of a compound semiconductor as a light absorbing layer. Among them, compound thin film solar cells using the I-III-VI group ₂ compound semiconductor and the I- (I-IV) -VI group ₄ compound semiconductor as the p-type compound semiconductor constituting the light absorbing layer are relatively inexpensive and accessible. Since it can be formed from a material and its manufacture is easy, research and development is vigorously progressing.

Among these, a solar cell having a light absorption layer composed of a chalcogenide-based I- (I-IV) -VI ₄ compound semiconductor containing Cu, Zn, Sn, S and Se is called a CZTS-based compound thin film solar cell. The CZTS-based light absorbing layer has a composition of Cu ₂ ZnSnS ₄ , Cu ₂ ZnSnSe ₄ or Cu ₂ ZnSn (S, Se) ₄ . The CZTS-based compound thin film solar cell has a stacked structure arranged in order of a first electrode layer, a light absorbing layer made of a p-type compound semiconductor, a buffer layer made of an n-type compound semiconductor, and a second electrode layer. When light is incident on the solar cell, power is generated according to the electromotive force due to the pn junction, which is a junction between the light absorbing layer and the buffer layer.

CZTS-based compound thin film solar cells using CZTS-based compound semiconductors (Cu ₂ ZnSnS ₄ , Cu ₂ ZnSnSe ₄ , Cu ₂ ZnSn (S, Se) ₄ ) as light absorbing layers have CIGS-based compound semiconductors (CuInGaSe ₂ ) as light absorbing layers. Unlike CIGS compound thin film solar cells, rare metals are not used. Therefore, CZTS-based compound thin film solar cells can be reduced in cost and are attracting great attention as next generation solar cells.

The light absorbing layer of the CZTS-based compound thin film solar cell can be produced by a dry method such as vapor deposition and sputtering and a wet method such as a fine particle coating method. In the fine particle coating method, a precursor containing at least one of Cu, Zn, Sn, S and Se is dissolved in an organic solvent and used as a light absorbing layer solution. The light absorbing layer solution is heat treated to obtain a light absorbing layer as a reaction product of the precursor described above. The fine particle coating method has attracted much attention because it can reduce cost. The organic-inorganic composite material composed of organic materials such as carbon, metals such as lead, and halogens such as iodide or chloride has perovskite, and has excellent charge transfer in the material. R & D is underway. The perovskite solar cell includes a conductive first electrode, a light absorbing layer positioned on the first electrode and converting light into electric charges, and a second electrode disposed on the light absorbing layer. Compounds having a perovskite crystal structure are represented by chemical formula ABX ₃ and the like, and are composed of cations of A site and B site and anions of X site.

As the light absorbing layer of the perovskite solar cell, a perovskite compound represented by CH ₃ NH ₃ PbI ₃ and a perovskite compound represented by (NH ₂ ) ₂ CHPbI ₃ are used. In the CH ₃ NH ₃ PbI ₃ perovskite compound, the cation of A site corresponds to CH ₃ NH ₃ +, the cation of B site to Pb ₂₊ , and the anion of X site to I −, respectively. In the (NH ₂ ) ₂ CHPbI ₃ perovskite compound, the cation of A site corresponds to (NH ₂ ) ₂ CH ₊ , the cation of B site to Pb ₂₊ , and the anion of X site to I −, respectively. do. The cation at the B site is coordinatively bonded to the X site anion and forms a symmetric or asymmetric octahedron.

The solar cell is formed of a light receiving surface on which light is incident and a back side of the light receiving surface, and a collecting electrode is formed on the light receiving surface and the back side of the solar cell. In addition, the solar cell array is sealed with an encapsulation resin or an electrical insulating material to form a solar cell panel. EVA (ethylene vinyl acetate) or polyolefin is used as the sealing resin, and PET (polyethylene terephthalate) or PVF (poly vinyl fluoride) is used as the electrical insulation material. In the solar cell panel, a frame member manufactured by extrusion molding such as aluminum is fixed with a silicone adhesive over part or the entire circumference of the outer edge of the solar cell panel.

FIG. 6 is a plan view showing a light receiving surface of a solar cell, and as shown, the light receiving surface 300a of the solar cell 300 has a square shape having a length of one side slightly shorter than a short side of the solar cell 300. A plurality of hook electrodes 338 are formed inside the edge electrode 336 at the same time and surrounded by the edge electrode 336. In addition, the light receiving surface 300a of the solar cell 300 is provided with a mounting portion 342 in which the upper lead electrode 344 shown in FIG. 7 is mounted at one end in the longitudinal direction.

7 is a perspective view of a solar cell to which the electrode of FIG. 6 is attached.

The solar cell 300A to which the electrode is attached includes a solar cell 300, an upper lead electrode 344 soldered to the junction 342 of the light receiving surface 300a of the solar cell 300, and the solar cell 300. The lower lead electrode 346 is soldered to the front surface of the bottom surface of the bottom surface, and the backing plate 348 soldered to the rear surface of the lower lead electrode 346 (that is, the surface opposite to the solar cell 300 side).

8 is a plan view of a solar cell panel with a plurality of electrodes attached thereto.

As shown in FIG. 8, the solar cell 300B with the plurality of electrodes has an end portion of the upper lead electrode 344 and the lower lead electrode 346 of the solar cell 300A having the electrodes adjacent to each other. An end portion of the upper lead electrode 344 and an end portion of the lower lead electrode 346 which are in contact with each other are soldered. Therefore, the plurality of solar cells 300 (8 in FIG. 8) fixed on the heat sink 316 are connected in series.

The lower lead electrode 346 and the upper lead electrode 344 are bonded to a power extraction lead wire (not shown). It has a component (not shown) for taking out electric power from solar cells 300, 300A, 300B, such as a terminal box (not shown) which extracts electric power with a power extraction lead wire.

Although the technical idea of the energy-saving LED channel signage of the present invention has been described as shown in the accompanying drawings, this is illustrative of the best embodiment of the present invention and is not intended to limit the present invention.

Therefore, it is obvious that any person skilled in the art can make various modifications and imitations such as dimensions, shapes, structures, etc. without departing from the scope of the technical idea of the present invention. Imitation is included in the scope of the technical idea of the present invention.

100: LED light unit 11, L ¹ , L ² , L ⁿ : LED
111: illumination light, light
150: wire 400: floor
450: side wall 500: LED channel sign
300, 300A, 300B: Solar Cell
300a: light receiving surface 336: edge electrode
338: hook electrode 344: upper lead electrode
342: loading portion, junction portion 346: lower lead electrode
316: heat sink

Claims (10)

An LED comprising a plurality of LED lighting units and a plurality of solar cells in a floor having a shape such as a figure or a character, a sidewall extending upward while maintaining the shape of the bottom, and a three-dimensional shape formed by the bottom and the sidewall. In the channel signage, the LED lighting unit using the commercial power is the illumination light used for the refrigerated channel signage, the illumination light is focused on the light receiving surface of the solar cell, characterized in that the LED lighting unit uses the electromotive force of the solar cell Energy-saving LED channel signboard. The method of claim 1,
The solar cell device of the solar cell is energy-saving LED channel signage characterized in that it comprises a pn junction to the single crystal silicon. The method of claim 1,
The solar cell element of the solar cell is an energy-saving LED channel signage, characterized in that consisting of a dye-sensitized solar cell using a light absorbing layer to which the dye is adsorbed. The method of claim 3,
Energy-saving LED channel signage characterized in that the light absorption layer is applied to the interior of the three-dimensional shape. The method of claim 3,
The light absorption layer is energy-saving LED channel signage, characterized in that for producing the electromotive force by the condensing of the illumination light. The method of claim 1,
The solar cell device of the solar cell is energy-saving LED channel sign, characterized in that consisting of a CZTS-based compound thin film solar cell having a light absorption layer containing Cu, Zn, Sn, S and Se. The method of claim 6,
The light absorbing layer is energy-saving LED channel signage, characterized in that for producing the electromotive force by the concentration of the illumination light. The method of claim 1,
The solar cell device of the solar cell is an energy-saving LED channel sign, characterized in that consisting of a perovskite solar cell having a compound having a perovskite crystal structure as a light absorption layer. The method of claim 8,
The compound is a chemical formula ABX ₃ , A is a monovalent cation, B is a divalent cation, X is a halogen-saving LED channel sign, characterized in that consisting of a perovskite solar cell. The method of claim 8,
The light absorbing layer is energy-saving LED channel signage, characterized in that for producing the electromotive force by the concentration of the illumination light.

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