KR20240005625A - Transmission line safety lighting device and method for controlling the same - Google Patents

Abstract

A power transmission line safety lighting device that can be operated without separate power application for driving the lighting device and a control method thereof are provided. The lighting device includes a power generating unit disposed in a housing; and a light-emitting element electrically connected to the power generation unit, wherein the power generation unit includes a piezoelectric plate partially fixed within the housing, and a second light emitting element disposed on one surface of the piezoelectric plate and spaced apart from each other in a first direction. It includes a plurality of magnets including a first magnet and a second magnet.

Description

Transmission line safety lighting device and its control method {TRANSMISSION LINE SAFETY LIGHTING DEVICE AND METHOD FOR CONTROLLING THE SAME}

The present invention relates to a power transmission line safety lighting device and a control method thereof. In detail, it relates to a power transmission line safety lighting device that can be operated without separate power application for driving the lighting device and a control method thereof.

More specifically, it is equipped with a light-emitting element whose blinking period and color are controlled according to the size and frequency of the power flowing in the transmission line, so that the size and frequency of the power flowing in the transmission line can be intuitively recognized from the outside, and the ultrasonic generation source can be detected. This relates to a smart power transmission line safety lighting device that can block access by birds, insects, etc., and its control method.

High-voltage transmission lines that transport power generated from power plants are extremely dangerous aviation obstacles for low-flying aircraft. Therefore, Korea's Airport Facilities Act and the installation and management standards for aviation obstruction warning lights and aviation obstruction day signs stipulate air craft warning lights, and the U.S. Federal Aviation Administration (FAA) also stipulates aerial visibility markers. The use of an aerial visibility marker-ball is recommended.

In relation to this, the following patent documents disclose technology related to a safety lighting device that can be used as an aviation hazard indicator light.

KR 10-2015-0115103 A1 KR 10-1912246 B KR 10-2222537 B KR 10-2289215 B KR 10-2012-0089113 A1

One of the technical problems in power transmission line safety lighting devices is the problem of power supply for lighting devices. Maintenance of power transmission line safety lighting devices is very difficult because they are fixed to power lines, etc., and since they must be operated at all times, the authorization of the power source is an important technical issue.

The above patent document suggests the possibility of using power induced by a transmission line as a power source for lighting a lighting device. However, there is a limitation in that it does not specifically disclose whether the safety lighting device will be turned on efficiently using the power flowing along the power transmission line.

In particular, in order to satisfy not only domestic laws but also regulations such as the International Civil Aviation Organization (ICAO), aviation obstruction lights must display high luminance and brightness so that aircraft pilots can easily identify them. Therefore, it is not easy to provide power at a level that can display high luminance with simple induced electromotive force alone.

Accordingly, a problem that the present invention aims to solve is to provide a smart power transmission line safety lighting device that can efficiently emit light using high-voltage current flowing along the power transmission line.

Another problem to be solved by the present invention is to provide a control method for the safety lighting device.

The problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

A lighting device according to an embodiment of the present invention for solving the above problems includes a housing including an upper housing and a lower housing that can be fastened to each other with a hinge structure; a power generating unit disposed within the housing; and a light emitting element electrically connected to the power generation unit, wherein the power generation unit includes a piezoelectric plate disposed within the housing, and a first magnet disposed on one surface of the piezoelectric plate and spaced apart from each other in a first direction. It includes a plurality of magnets including a second magnet.

The first magnet and the second magnet each have a magnetic dipole in a third direction, and the polarity directions of the first magnet and the second magnet may be opposite.

The plurality of magnets may further include a third magnet facing the first magnet across the piezoelectric plate, and a fourth magnet facing the second magnet across the piezoelectric plate.

In addition, any of the housings may include a fixing part that fixes the piezoelectric plate and forms a bending line extending in the second direction on the piezoelectric plate when the first magnet or the second magnet moves in the third direction. there is.

The light emitting element may be configured to blink in conjunction with the bending repetition rate and/or bending degree of the piezoelectric plate.

Additionally, the light emitting device may be configured to emit different colors depending on the bending repetition rate and/or degree of bending of the piezoelectric plate.

In some embodiments, the lighting device may further include an ultrasonic generation element electrically connected to the piezoelectric plate.

The outer lower surface of the upper housing and the outer upper surface of the lower housing may have at least a partially curved surface.

The piezoelectric plate may include a first piezoelectric plate disposed in an upper housing and a second piezoelectric plate disposed in a lower housing.

At this point, the first piezoelectric plate and the second piezoelectric plate may be configured to bend in opposite directions.

A lighting device according to another embodiment of the present invention for solving the above problems includes a power generation unit disposed in a housing; and a light-emitting element electrically connected to the power generation unit, wherein the power generation unit includes a piezoelectric plate partially fixed within the housing, and a second light emitting element disposed on one surface of the piezoelectric plate and spaced apart from each other in a first direction. It includes a plurality of magnets including a first magnet and a second magnet.

The first magnet and the second magnet each have a magnetic dipole in a third direction, and the polarity directions of the first magnet and the second magnet may be opposite.

At this time, when a magnetic field is formed, the first magnet and the second magnet may be configured to move in the same direction and bend the piezoelectric plate.

In some embodiments, the lighting device may further include a sensor or processor that detects a bending degree or bending cycle of the piezoelectric plate.

The lighting device may further include a first fixing part and a second fixing part that contacts one surface and the other surface of the piezoelectric plate and fixes the piezoelectric plate.

In this case, the first fixing part and the second fixing part may be spaced apart in a third direction perpendicular to the first direction.

Additionally, from a planar view, a bending line of the piezoelectric plate may be formed between the first magnet and the second magnet.

And the first fixing part, the first magnet, and the second magnet may be arranged to overlap in a second direction orthogonal to the first and third directions.

An energy harvesting device according to an embodiment of the present invention for solving any of the above problems includes a power generation unit disposed within a housing, wherein the power generation unit includes a piezoelectric plate partially fixed within the housing, and It includes a plurality of magnets including a first magnet and a second magnet disposed on one surface of the piezoelectric plate and spaced apart from each other in a first direction.

An energy harvesting device according to another embodiment of the present invention for solving any of the above problems includes an upper module and a lower module coupled to each other in a hinge structure, wherein the upper module includes an upper housing and a partial portion within the upper housing. It includes a first piezoelectric plate fixed to, and a first magnet and a second magnet disposed on the upper surface of the first piezoelectric plate and spaced apart from each other in a first direction, wherein the lower module includes a lower housing, within the lower housing. It includes a second piezoelectric plate partially fixed in, and a third magnet and a fourth magnet disposed on the upper surface of the second piezoelectric plate and spaced apart from each other in the first direction.

The outer lower surface of the upper housing or the outer upper surface of the lower housing may have an at least partially curved surface, and a cable extending in a second direction perpendicular to the first direction may be interposed and fixed between the upper housing and the lower housing. there is.

At this time, the curved surface may be formed so that the first piezoelectric plate overlaps the cable in a third direction perpendicular to the first direction.

The upper module may further include a first fixing part for fixing the first piezoelectric plate, and the lower module may further include a second fixing part for fixing the second piezoelectric plate.

Additionally, the first fixing part and the second fixing part may be spaced apart in a third direction intersecting the first direction.

The upper module further includes a first fixing part for fixing the first piezoelectric plate, and the lower module further includes a second fixing part for fixing the second piezoelectric plate, and the first magnet is configured to 1 is disposed on one side of the first fixture in the first direction, the second magnet is disposed on the other side of the first fixture in the first direction, the third magnet is disposed on one side of the second fixture in the first direction, and the fourth magnet is disposed on one side of the second fixture in the first direction. The magnet may be disposed on the other side of the second fixture in the first direction.

In this case, the first magnet and the third magnet each have a magnetic dipole in the third direction, but the polarity directions of the first magnet and the third magnet are in the same direction, and when a magnetic field is formed, the first magnet and the third magnet The third magnet may be configured to move in different directions.

A method of controlling a lighting device according to an embodiment of the present invention to solve another problem described above is a method of controlling a lighting device including a piezoelectric plate and a light-emitting element that uses the power generated by the piezoelectric plate as a power source. It includes controlling the blinking repetition rate and/or light emission color of the lighting device in conjunction with the bending repetition rate and/or bending degree of the plate.

Specific details of other embodiments are included in the detailed description.

According to embodiments of the present invention, it is possible to form mechanical movement of a piezoelectric plate and generate electrical energy from a magnetic field generated around a power transmission line. By using this as a power source for lighting a safety lighting device, it is possible to provide a safety lighting device that can be maintained without providing a separate power source.

Effects according to embodiments of the present invention are not limited to the contents exemplified above, and further various effects are included in the present specification.

1 is a schematic diagram of a safety lighting system according to an embodiment of the present invention.
Figure 2 is a perspective view of the safety lighting device of Figure 1;
Figure 3 is a projection perspective view showing the upper lighting module of Figure 2.
Figure 4 is a side cross-sectional view of the upper lighting module of Figure 3.
Figure 5 is an exploded perspective view of the piezoelectric plate of Figure 3.
Figures 6 and 7 are diagrams showing the operation of the safety lighting device of Figure 1.
Figure 8 is a hardware schematic diagram of the safety lighting device of Figure 1.
Figure 9 is a perspective view of a safety lighting device according to another embodiment of the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms, and only the embodiments serve to ensure that the disclosure of the present invention is complete, and those skilled in the art It is provided to fully inform the person of the scope of the invention, and the present invention is only defined by the scope of the claims. That is, various changes may be made to the embodiments presented by the present invention. The embodiments described below are not intended to be limiting, and should be understood to include all changes, equivalents, and substitutes thereto.

The size, thickness, width, length, etc. of components shown in the drawings may be exaggerated or reduced for convenience and clarity of explanation, so the present invention is not limited to the form shown.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings that can be commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless clearly specifically defined.

Spatially relative terms such as 'above', 'upper', 'on', 'below', 'beneath', and 'lower' are used in the drawing. As shown, it can be used to easily describe the correlation between one element or component and other elements or components. Spatially relative terms should be understood as terms that include different directions of the element when used in addition to the direction shown in the drawings. For example, when an element shown in a drawing is turned over, an element described as 'below or beneath' another element may be placed 'above' the other element. Accordingly, the illustrative term 'down' may include both downward and upward directions.

As used herein, 'and/or' includes each and every combination of one or more of the mentioned items. Additionally, the singular form also includes the plural form unless specifically stated in the phrase. As used herein, 'comprises' and/or 'comprising' do not exclude the presence or addition of one or more other components in addition to the mentioned components. The numerical range expressed using 'to' indicates a numerical range that includes the values written before and after it as the lower limit and upper limit, respectively. ‘About’ or ‘approximately’ means a value or numerical range within 20% of the value or numerical range stated thereafter.

In this specification, when referring to components, ordinal modifiers such as 'first component', 'second component', '1-1 component', etc. are used to distinguish one component from another component. It just happens. Accordingly, the first component referred to below may be referred to as the second component within the scope of the technical idea of the present invention. For example, what is referred to as a first component in one embodiment may be referred to as a second component in another embodiment. Also, of course, what is referred to as a first component in the description of the invention may be referred to as a second component in the claims.

In this specification, the first direction (X) refers to an arbitrary direction in a plane, and the second direction (Y) refers to another direction intersecting the first direction (X) in the plane. Additionally, the third direction (Z) refers to a direction perpendicular to the plane. Unless otherwise defined, 'plane' means the plane to which the first direction (X) and the second direction (Y) belong. Also, unless otherwise defined, 'overlap' means that components overlap in the third direction (Z) from the above plane viewpoint.

Hereinafter, the present invention will be described in detail with reference to the attached drawings.

1 is a schematic diagram of a safety lighting system according to an embodiment of the present invention.

Referring to Figure 1, the safety lighting system according to this embodiment includes a power transmission line (C) (or power transmission cable) and a safety lighting device (1) coupled to the power transmission line (C). Figure 1 illustrates a case where a transmission line (C) has a substantially circular cross-section and extends in the second direction (Y). However, this is for clarity of explanation, and the transmission line (C) may include a plurality of wire bundles extending in the second direction (Y) and an insulating coating surrounding the bundles.

A transmission line (C) may be a line used to transmit power or electrical signals. The transmission line C can transmit power, for example, alternating current power (AC power). The power flowing along the transmission line (C) may have a frequency of about 60 Hz, but the present invention is not limited thereto. In other embodiments, the power flowing along transmission line C may have a frequency of about 50 Hz or less, or about 40 Hz or less, or about 70 Hz or more, or about 80 Hz or more.

Accordingly, a magnetic field located in a plane to which the first direction (X) and the third direction (Z) belong, approximately based on the cross-sectional center of the transmission line (C), may be formed around the transmission line (C). The direction of the magnetic field can be described by Ampere's right-handed screw rule.

The lighting device 1 may be fixed adjacent to the power transmission line C, at least partially surrounding the power transmission line C. For example, the lighting device 1 may include an upper lighting module 11 and a lower lighting module 12 coupled with a hinge structure 1h.

Hereinafter, the lighting device 1 will be described in detail with further reference to FIGS. 2 to 5. Figure 2 is a perspective view of the safety lighting device of Figure 1, showing the upper lighting module in a tilted state using a hinge portion. Figure 3 is a projection perspective view showing the upper lighting module of Figure 2. Figure 4 is a side cross-sectional view of the upper lighting module of Figure 3. Figure 5 is an exploded perspective view of the piezoelectric plate of Figure 3.

Referring further to FIGS. 2 to 5, the upper lighting module 11 of the lighting device 1 according to this embodiment may have an upper hinge 11h and the lower lighting module 12 may have a lower hinge 12h. there is. The upper hinge 11h and the lower hinge 12h may together form the hinge portion 1h. Accordingly, while the position of the lower lighting module 12 is fixed, the upper lighting module 11 may be rotated or tilted within the plane to which the first direction (X) and the third direction (Z) belong.

In addition, the upper lighting module 11 may have an upper fixing part 11s and the lower lighting module 12 may have a lower fixing part 12s. The upper fixing part 11s and the lower fixing part 12s are directly opposed to each other and can enable fastening of the upper lighting module 11 and the lower lighting module 12. For example, although not shown in the drawing, the upper lighting module 11 and the lower lighting module 12 can be coupled using screws that penetrate the upper fixing part 11s and the lower fixing part 12s. However, the present invention is not limited to this, and the upper lighting module 11 and the lower lighting module 12 are connected to each other from the other side of the first direction (X) with the hinge structure (1h) formed on one side of the first direction (X). Various mechanical fastening structures may be adopted for mutual fastening.

That is, the lighting device 1 according to the present embodiment includes an upper lighting module 11 and a lower lighting module 12 joined by a hinge structure 1h, and a transmission line C extending very long in one direction. Can be easily fixed to.

In an exemplary embodiment, the upper lighting module 11 and the lower lighting module 12 may be substantially identical or may be configured to be extremely similar. For example, as will be described later, the lighting device 1 includes a power generation unit disposed inside the housing, and the upper lighting module 11 and the lower lighting module 12 may each include a power generation unit. Hereinafter, the upper lighting module 11 will be described as an example, but it will be easily understood that the components described with the upper lighting module 11 can also be applied to the lower lighting module 12.

Top lighting module 11 may include a housing 100 (eg, upper housing) and a power generation unit (eg, top power generation unit) disposed within housing 100. Additionally, the power generation unit may include a piezoelectric plate 200 (eg, upper piezoelectric plate) and a plurality of magnets 310, 320, 330, and 340 (eg, upper magnets).

The piezoelectric plate 200 may include a base plate 210 and a piezoelectric layer 230 disposed on the base plate 210 . The base plate 210 may provide a space for the piezoelectric layer 230 to be disposed. The base plate 210 has a predetermined elasticity or bending rigidity and may be made of a conductive material. For example, the base plate 210 may be a metal plate.

The piezoelectric layer 230 may be understood as a coating layer, plate, or film containing a piezo-electric material. Piezoelectric material refers to a material that exhibits a piezoelectric effect that changes mechanical kinetic energy into electrical energy or performs the opposite mechanism. That is, when an external force is applied to the piezoelectric layer 230 containing a piezoelectric material, a potential difference may occur, or mechanical displacement, such as bending, may occur when an external voltage is applied.

Examples of piezoelectric materials include tourmaline, quartz, topaz, barium titanate, PZT (lead zirconate titanate), lead zirconate, and berlinite (AlPO ₄ ). , sodium niobate (NaNbO ₃ ), potassium niobate (KNbO ₃ ), sodium tungstate (Na ₂ WO ₃ ), bismuth ferrite (BiFeO ₃ ), bismuth tita It may include bismuth titanate (Bi ₄ Ti ₃ O ₁₂ ) or crystals thereof.

Figure 5 illustrates a case where the piezoelectric layer 230 is formed with an area substantially equal to that of the base plate 210, but the present invention is not limited thereto. In another embodiment, the planar area of the base plate 210 may be larger than the area of the piezoelectric layer 230. That is, the piezoelectric layer 230 may be disposed only on a portion of the base plate 210. At this time, the piezoelectric layer 230 may be located within a bending line that will be described later.

Magnets 310, 320, 330, and 340 may be disposed on both edges of the piezoelectric plate 200 in the first direction (X). The magnets 310, 320, 330, and 340 include a first magnet 310 and a second magnet 320, and may further include a third magnet 330 and a fourth magnet 340. The first to fourth magnets 310 to 340 may have a bar shape extending approximately in the second direction (Y), but the present invention is not limited thereto.

The first magnet 310 and the second magnet 320 may be disposed on one surface of the piezoelectric plate 200, for example, on the upper surface of FIG. 4 . The first magnet 310 and the second magnet 320 may contact the piezoelectric plate 200 or at least contact the base plate 210. The first magnet 310 and the second magnet 320 may be spaced apart in the first direction (X).

The third magnet 330 and the fourth magnet 340 may be disposed on the other surface of the piezoelectric plate 200, for example, on the lower surface of FIG. 4 . The third magnet 330 and the fourth magnet 340 may contact the piezoelectric plate 200 or at least contact the base plate 210. The third magnet 330 and the fourth magnet 340 may be spaced apart in the first direction (X).

In this case, the first magnet 310 and the third magnet 330 are arranged to be spaced apart in the third direction (Z) with the piezoelectric plate 200 in between, and the second magnet 320 and the fourth magnet 340 are They may be spaced apart in the third direction (Z) with the piezoelectric plate 200 interposed therebetween.

In some embodiments, at least some of the magnets 310, 320, 330, and 340 may be omitted. For example, the magnets may include a first magnet 310 and a second magnet 320 fixedly disposed on one surface of the piezoelectric plate 200, but may not include a third magnet and a fourth magnet.

The first to fourth magnets 310 to 340 may have a polarity in the third direction (Z). In an embodiment in which the first magnet 310 and the third magnet 330 overlap in the third direction (Z), the magnetic dipoles of the first magnet 310 and the third magnet 330 may face substantially the same direction. You can. Likewise, in an embodiment in which the second magnet 320 and the fourth magnet 340 overlap in the third direction (Z), the magnetic dipoles of the second magnet 320 and the fourth magnet 340 are directed in substantially the same direction. can be directed to

In this case, the first magnet 310 and the third magnet 330 may form magnetic field lines located in the plane to which the first direction (X) and the third direction (Z) belong. Additionally, the second magnet 320 and the fourth magnet 340 may together form magnetic force lines located in a plane to which the first direction (X) and the third direction (Z) belong.

When the first magnet 310 and the third magnet 330 have the same magnetic dipole arrangement and the second magnet 320 and the fourth magnet 340 have the same magnetic dipole arrangement, the magnets 310, 320, and 330 , 340) and the piezoelectric plate 200 are fixed via the piezoelectric plate 200 by magnetic attraction acting between the first magnet 310 and the third magnet 330 without a means for coupling, such as an adhesive layer, etc. , the second magnet 320 and the fourth magnet 340 may be fixed via the piezoelectric plate 200 by magnetic attraction acting between them.

In an exemplary embodiment, the first magnet 310 and the second magnet 320 disposed spaced apart in the first direction (X) on one surface of the piezoelectric plate 200 have magnetic dipoles in opposite directions, and the piezoelectric plate ( The third magnet 330 and the fourth magnet 340 spaced apart in the first direction (X) on the other surface of the 200 may have magnetic dipoles in opposite directions.

In this way, when the first magnet 310 and the second magnet 320 have polarities opposite to each other, the first magnet 310 and the second magnet 320 are connected to each other by the magnetic field formed by the transmission line (C). Can receive force in the same direction. Accordingly, the piezoelectric plate 200 may be bent to be concave downward or convex upward.

Similarly, when the third magnet 330 and the fourth magnet 340 have polarities opposite to each other, the third magnet 330 and the fourth magnet 340 are separated from each other by the magnetic field formed by the transmission line (C). Can receive force in the same direction. Accordingly, the piezoelectric plate 200 may be bent to be concave downward or convex upward. This will be described later along with FIGS. 6 and 7.

Hereinafter, as shown in FIG. 4, the first magnet 310 to the fourth magnet 340 each have a first pole (P1) and a second pole (P2), and the first magnet 310 and the fourth magnet 340 each have a first pole (P1) and a second pole (P2). The description will be made by taking as an example the case where the second magnets 320 are arranged to have polarities in opposite directions, and the third magnet 330 and the fourth magnet 340 are arranged to have polarities in opposite directions. The first pole (P1) and the second pole (P2) may be either an N pole or an S pole, respectively.

The external housing 100 may have an internal space to accommodate the internal piezoelectric plate 200 and the magnets 310, 320, 330, and 340. In particular, as will be described later with reference to FIG. 6, the piezoelectric plate 200 and the magnets 310, 320, 330, and 340 can be bent approximately in the third direction (Z), and the housing 100 has the piezoelectric plate 200. It may have sufficient internal space so as not to interfere with bending operations such as the like.

Additionally, the housing 100 may be formed integrally with the above-described hinge 11h (eg, upper hinge) and the fixing part 11s (eg, upper fixing part) without a physical boundary. For example, the housing 100 may include a hinge 11h and a fixing portion 11s. Although not shown in the drawings, the housing 100 may be configured to open and close its internal space, or the housing 100 may be configured to be separated into a plurality of parts, such as a main body and a cap.

The housing 100 may include fixing protrusions 131 and 132 disposed toward the interior space. For example, the fixing protrusions 131 and 132 include an upper fixing protrusion 132 (or a first fixing protrusion, or an upper fixing member) and a lower fixing protrusion 131 (or a second fixing protrusion, or a lower fixing member). may include.

The upper fixing protrusion 132 and the lower fixing protrusion 131 may be spaced apart from each other in the third direction (Z), and a piezoelectric plate 200 or at least a piezoelectric layer 230 may be interposed between them. Specifically, the upper fixing protrusion 132 is disposed on one surface of the piezoelectric plate 200 and is located between the first magnet 310 and the second magnet 320, and the first magnet 310 and the second magnet 320 ) and can overlap in the first direction (X). In addition, the lower fixing protrusion 131 is disposed on the other side of the piezoelectric plate 200 and is located between the third magnet 330 and the fourth magnet 340, and the third magnet 330 and the fourth magnet 340 and can overlap in the first direction (X). 4 illustrates a case where the widths of the upper fixing protrusion 132 and the lower fixing protrusion 131 in the first direction (X) are substantially the same, but the upper fixing protrusion 132 and the lower fixing protrusion 131 are The widths may be different.

Either or both of the upper fixing protrusion 132 and the lower fixing protrusion 131 may contact the piezoelectric plate 200. For example, the upper fixing protrusion 132 may contact the piezoelectric layer 230 and the lower fixing protrusion 131 may contact the base plate 210 . Through this, the upper fixing protrusion 132 and the lower fixing protrusion 131 of the housing 100 are positioned in the third direction (Z) and the horizontal position of the piezoelectric plate 200, that is, in the first direction (X) and/or The position in the second direction (Y) can be fixed.

As will be described later, when AC power is applied to the transmission line (C), a bending line extending in the second direction (Y) may be formed on the piezoelectric plate 200. At this time, the width of the bottom of the upper fixing protrusion 132 and the width and shape of the top of the lower fixing protrusion 131 may affect the position of the bending line formed on the piezoelectric plate 200. 4 and other examples illustrate a case in which the upper fixing protrusion 132 has a shape that narrows in width toward the bottom and the lower fixing protrusion 131 has a shape that narrows in width toward the top, but the present invention is not limited thereto. If the width of the lower and upper ends of the upper fixing protrusion 132 and the lower fixing protrusion 131 in the first direction (X) is sufficiently small, the bending line is approximately the upper fixing protrusion 132 and the lower fixing protrusion 131. It can be overlapped in the third direction (Z). Alternatively, depending on the shape of the fixing protrusions 131 and 132, two or more bending lines extending approximately in the second direction (Y) may be formed spaced apart in the first direction (X).

Additionally, the outer surface of the housing 100 may have a curved shape that is at least partially indented or curved so as to be in close contact with the transmission line (C). 4 illustrates a case where a curved portion 11c is formed on the lower surface of the housing 100 (eg, upper housing).

One or more light-emitting devices 400, for example, LED devices, may be disposed on the outer surface of the housing 100. The light emitting element 400 may be electrically connected to the piezoelectric plate 200. For example, the light emitting element 400 may be electrically connected directly to the piezoelectric plate 200, or may be electrically connected via a control circuit (not shown) to be controlled based on the potential difference generated in the piezoelectric plate 200. there is. The operation of the light emitting device 400 will be described later.

Hereinafter, the operating principle of the lighting device 1 according to this embodiment will be described in detail with further reference to FIGS. 6 and 7. Figures 6 and 7 are diagrams showing the operation of the safety lighting device of Figure 1.

Referring further to FIGS. 6 and 7, the upper lighting module 11 and/or the lower lighting module 12 of the lighting device 1 according to this embodiment includes a power generating unit and a light emitting element 400, respectively. , the piezoelectric plates 200 and 250 of a power generation unit may be bent to generate power.

Specifically, the magnets 310, 320, 330, 340, 350, 360, 370, and 380 move or vibrate approximately in the third direction (Z) depending on the direction of the electromotive force of the alternating current power flowing along the transmission line (C). And the piezoelectric plates (200, 250) can be bent.

First, as shown in FIG. 6, when a current direction is formed in one side of the second direction (Y) along the transmission line (C), an approximately circular shape is formed within the plane to which the first direction (X) and the third direction (Z) belong. A magnetic field can be formed. The magnets 310, 320, 330, 340, 350, 360, 370, and 380 of the power generation unit may receive an attractive or repulsive force in the third direction (Z) by the magnetic field.

Figure 6 shows the magnets 310, 320, 330, 340 of the upper power generation unit (e.g., the 1-1 magnet, the 1-2 magnet, the 1-3 magnet, and The 1-4 magnet) receives downward force so that the upper piezoelectric plate 200 is bent concavely downward, and the magnets 350, 360, 370, 380 of the lower power generation unit (e.g., the 2-1 magnet) , 2-2 magnets, 2-3 magnets, and 2-4 magnets) receive upward force and the lower piezoelectric plate 250 is bent concavely upward, but the present invention is not limited thereto.

Next, as shown in FIG. 7, the magnets 310, 320, 330, and 340 of the upper power generation unit are forced upward by the magnetic field formed in different directions around the transmission line C, and the upper piezoelectric plate 200 ) is bent concavely upward, and the magnets 350, 360, 370, and 380 of the lower power generation unit receive force downward, and the lower piezoelectric plate 250 is bent concavely downward, but the present invention It is not limited to this.

As described above, when the power flowing along the transmission line C is AC power, the operations shown in FIGS. 6 and 7 are repeated, and the magnets 310, 320, 330, 340, 350, 360, 370, and 380 are Mechanical movement in the form of reciprocating or oscillating movement in the third direction (Z) may be performed. In addition, the piezoelectric plates 200 and 250 are repeatedly bent up and down along a bending line extending in the second direction (Y) by the magnets 310, 320, 330, 340, 350, 360, 370, and 380. , electromotive force may be generated according to the piezoelectric effect in the piezoelectric layer 230.

In other words, the current flowing along a typical transmission line (C) generates a magnetic field, but the magnetic field is not converted into a third energy source and is extinguished as is. However, the power generation unit of the lighting device 1 according to this embodiment uses the magnetic field of the transmission line C to vibrate the magnets 310, 320, 330, 340, 350, 360, 370, and 380 and magnets 310 , 320, 330, 340, 350, 360, 370, 380) can function as an energy harvesting system that can convert mechanical kinetic energy into current using the piezoelectric effect.

In particular, the first magnet 310, the second magnet 320, and the third magnet 330 and fourth magnet 340 have opposite magnetic dipole directions, thereby improving the mechanical stability of the energy harvesting system. It can be improved.

If, unlike this embodiment, the first magnet 310 and the second magnet 320 have the same magnetic dipole, the first magnet 310 and the second magnet 320 are separated by a magnetic field generated as current flows in the transmission line (C). One of the magnets 320 may receive force upward and the other may receive force downward. That is, the left end and right end of the piezoelectric plate 200 move in different directions, so that the degree of bending of the piezoelectric plate 200 is slight, or it may behave like a seesaw around the fixing protrusions 131 and 132. there is. Therefore, compared to the present embodiment, the degree of bending of the piezoelectric plate 200 is weak, so sufficient power may not be generated.

In addition, as in the above example, when a force in the third direction (Z) directed in opposite directions is repeatedly applied to one end and the other end of the piezoelectric plate 200, the upper lighting module 11 is stable on the power transmission line (C). may not be able to maintain the combined state.

Additionally, when a current with a frequency of several tens of hertz levels flows through the transmission line (C), the piezoelectric plate 200 may also receive force at a tens of hertz level and vibrate. At this time, when forces in opposite directions are applied to one end and the other end of the piezoelectric plate 200 and it behaves like a seesaw, the piezoelectric plate 200 is stably fixed between the upper fixing protrusion 132 and the lower fixing protrusion 131. If this is not possible and the piezoelectric plate 200 is moved out of position, the durability of the lighting device 1 may be reduced.

Furthermore, it may be desirable that the direction in which both ends of the upper piezoelectric plate 200 receive force at any moment is opposite to the direction in which both ends of the lower piezoelectric plate 250 receive force. For example, as shown in FIG. 6, when the upper piezoelectric plate 200 is bent concavely downward, it may be desirable for the lower piezoelectric plate 250 to be bent concavely upward. For another example, as shown in FIG. 7 , when the upper piezoelectric plate 200 is bent concavely upward, it may be desirable for the lower piezoelectric plate 250 to be bent concavely downward.

As described above, the lighting device 1 including the upper lighting module 11 and the lower lighting module 12 coupled by the hinge structure 1h may be combined to surround the transmission line C. At this point, when the power generation unit of the upper lighting module 11 and the power generation unit of the lower lighting module 12 receive a force in the same direction, the power transmission line C may also be applied in the same direction. Therefore, the transmission line (C) may vibrate, or at least the transmission line (C) may sway. In order to prevent this, the direction of the force applied by the magnets (310, 320, 330, 340) in the upper lighting module (11) and the magnets (350, 360, 370, 380) in the lower lighting module (12) It may be desirable to offset the applied force by configuring it in the opposite direction.

For this purpose, the other surface (e.g., lower surface) of the upper piezoelectric plate 200 and one surface (e.g., upper surface) of the lower piezoelectric plate 250 face each other, and a 1-1 magnet is placed on one surface of the upper piezoelectric plate 200. In an embodiment in which the 310 and the 1-2 magnet 320 are disposed, and the 1-3 magnet 330 and the 1-4 magnet 340 are disposed on the other side of the upper piezoelectric plate 200, The magnets disposed on one side of the lower piezoelectric plate 250 are referred to as the 2-1 magnet 350 and the 2-2 magnet 360, and the magnets disposed on the other side of the lower piezoelectric plate 250 are referred to as the 2-1 magnet 350 and the 2-2 magnet 360. It may be referred to as the 2-3 magnet 370 and the 2-4 magnet 380. In addition, the 1-1 magnet 310 and the 2-1 magnet 350 are arranged overlapping in the third direction (Z), and the 1-3 magnet 330 and the 2-3 magnet 370 are arranged in the third direction (Z). They are arranged overlapping in three directions (Z), and the 1-2 magnet 320 and the 2-2 magnet 360 are arranged overlapping in the third direction (Z), and the 1-4 magnet 340 and the second magnet 340 are arranged overlapping in the third direction (Z). -4 The magnets 380 may be arranged to overlap in the third direction (Z).

At this time, the 1-1 magnet 310 and the 2-1 magnet 350 may exhibit substantially the same magnetic dipole arrangement. For example, if the bottom of the 1-1 magnet 310 represents the first polarity and the top of the 1-1 magnet 310 represents the second polarity, the bottom of the 2-1 magnet 350 also has the second polarity. It may have polarity 1 and the top may have a second polarity.

Likewise, the 1-2 magnet 320 and the 2-2 magnet 360 have substantially the same magnetic dipole arrangement, and the 1-3 magnet 330 and the 2-3 magnet 370 have the same magnetic dipole. With the arrangement, the first-fourth magnet 340 and the second-fourth magnet 380 may have the same magnetic dipole arrangement.

Figure 8 is a hardware schematic diagram of the safety lighting device of Figure 1. Referring further to FIG. 8, the electromotive force generated by bending the power generation unit of the lighting device 1 according to this embodiment, specifically the piezoelectric plates 200 and 250, is generated by an energy storage system (ESS) such as a battery. ) can be stored in . However, the present invention is not limited to this, and the energy generated by the power generation unit is not stored and immediately operates the light emitting element 400 (Light Source) and/or the ultrasonic wave source (or sound wave source). can be used for In other words, the light-emitting element 400 and the ultrasonic source are provided with the power necessary for operation by an energy storage system such as a power generation unit or battery including the piezoelectric plate 200, so they can be operated semi-permanently without a separate external power source. It can work.

As previously described, the lighting device 1 may be coupled to the power transmission line C exposed to the external environment. One of the problems that occurs in transmission lines (C) is transmission line obstruction caused by birds or insects. The lighting device 1 of this embodiment can prevent birds or insects from approaching the power transmission line by performing an ultrasonic generation function in addition to the lighting function.

Meanwhile, the lighting device 1 may further include a sensor in addition to the ultrasonic wave source. The sensor may be a sensor for detecting the bending degree and bending cycle of the piezoelectric plates 200 and 250. However, the present invention is not limited to this, and the generation cycle of electromotive force generated according to bending of the piezoelectric plates 200 and 250 may be measured using a control circuit or control unit. In other words, the term 'sensor' can be used to include sensing the measurement object using a control circuit as well as a separate element for sensing the measurement object.

In an exemplary embodiment, the light emitting device 400 may be configured to blink in conjunction with the bending repetition rate and/or bending degree of the piezoelectric plates 200 and 250 detected through the sensor. If the bending repetition rate is high, it may mean that the frequency of the current flowing in the corresponding transmission line (C) is high. For example, when a current of 60 Hz flows through the transmission line (C), the light emitting element 400 may blink with a cycle corresponding to 0.6 Hz, and when a current of 120 Hz flows through the transmission line (C), it can blink with a cycle corresponding to 1.2 Hz. there is. Through this, you can intuitively check the frequency of the corresponding transmission line (C). For another example, if the degree of bending of the piezoelectric plate is greater than a predetermined standard, the piezoelectric plate may blink with a cycle corresponding to 2.0 Hz, and if the degree of bending of the piezoelectric plate is less than a certain standard, it may blink with a cycle corresponding to 1.0 Hz.

Additionally, the light emitting element 400 may be configured to emit different colors depending on the bending repetition rate and/or bending degree of the piezoelectric plates 200 and 250 detected through the sensor. If the degree of bending is large, it may mean that the current (or voltage) flowing along the corresponding transmission line (C) is high. For example, a lighting device connected to a high-voltage transmission line transmitted from a power plant may have a large degree of bending of the piezoelectric plate due to the high voltage, and thus emit red light. For another example, a lighting device connected to a transmission line transmitted from a substation may have a small degree of bending of the piezoelectric plate due to a relatively low voltage, and thus emit green light.

Additionally, the ultrasonic generator may be configured to operate in conjunction with the bending repetition rate and/or bending degree of the piezoelectric plates 200 and 250 detected through the sensor. For example, an ultrasonic source in a lighting device connected to a high-frequency current flowing or high-voltage power transmission line may produce a sound of greater amplitude or at a greater frequency, for example, for 30 seconds per minute. Can produce sound. For example, an ultrasonic source in a lighting device connected to a relatively low-frequency current-carrying or low-voltage power transmission line may produce a sound of a smaller magnitude or at a lower frequency, for example, for only 10 seconds per minute. Can produce sound.

The lighting device 1 according to the present invention can be used as an air craft warning light or an aerial visibility marker-ball.

Hereinafter, other embodiments of the present invention will be described. However, the description of the same or extremely similar configuration as the above-described embodiment will be omitted, and this will be clearly understood by those skilled in the art from the attached drawings and detailed description.

Figure 9 is a perspective view of a safety lighting device according to another embodiment of the present invention.

Referring to FIG. 9, the lighting device 2 according to this embodiment includes an upper lighting module 11 and a lower lighting module 12, and the upper lighting module 11 and the lower lighting module 12 each provide power. Although it includes a generating unit, it is different from the above-described embodiment in that a groove 200g is formed in the piezoelectric plate 200. Hereinafter, the upper lighting module 11 will be described as an example, but it goes without saying that the lower lighting module 12 can also be understood in the same way.

Housing 100 (eg, upper housing) may include an upper fixing protrusion 132 and a lower fixing protrusion 131. Unlike the above-described embodiment in which the upper fixing protrusion and the lower fixing protrusion are spaced apart in the third direction (Z) and do not contact each other, the upper fixing protrusion 132 and the lower fixing protrusion 131 according to the present embodiment are at least partially fixed to the third direction (Z). They may be spaced apart in direction (Z) and at least partially contact each other. For example, the upper fixing protrusion 132 and the lower fixing protrusion 131 are in contact with each other at both ends of the fixing protrusions 131 and 132 in the second direction (Y), and the second fixing protrusions 131 and 132 are in contact with each other. In the central portion of the direction (Y), the upper fixing protrusion 132 and the lower fixing protrusion 131 may be spaced apart via the piezoelectric plate 200.

A protruding groove 200g may be formed on one edge and/or the other edge of the piezoelectric plate 200 in the second direction (Y). The protruding groove 200g may be located at the center of the piezoelectric plate 200 in the first direction (X). The protruding groove 200g may have a slit shape extending approximately in the second direction (Y). Additionally, the lower fixing protrusion 131 may be at least partially inserted into the protrusion groove 200g. Figure 9 illustrates a case where the lower fixing protrusion 131 is inserted into the protrusion groove 200g, but in another embodiment, the upper fixing protrusion may be inserted. As described above, the fixing protrusions 131 and 132 are inserted into the protrusion groove 200g to fix the position of the piezoelectric plate 200 in the first direction (X) and/or the position in the second direction (Y). It can be.

The piezoelectric plate 200 can be bent and vibrated at a frequency of approximately 60 Hz or higher. Accordingly, a design to increase the placement stability of the piezoelectric plate 200 may be considered. To this end, improvement of mechanical stability according to the polarity direction of magnets was proposed.

In this embodiment, even when the first magnet 310 and the second magnet 320 have the same magnetic dipole, in other words, one end and the other end of the piezoelectric plate 200 in the first direction (X) are in opposite directions. Even when the piezoelectric plate 200 behaves like a seesaw under force, the placement stability of the piezoelectric plate 200 can be increased by adopting a means for fixing the position of the piezoelectric plate 200.

Although not shown in the drawings, in another embodiment, the inner surface of the housing 100 on the inner space side may have a concavely indented guide groove. And the length of the magnets 310, 320, 330, and 340 in the second direction (Y) is larger than the width of the piezoelectric plate 200 in the second direction (Y), and accordingly, the magnets are attached to the piezoelectric plate 200. It may protrude to one side and/or the other side in the second direction (Y). And the protruding ends of the magnets can be inserted into the housing guide groove. As mentioned above, mechanical stability must be secured in order for magnets that vibrate at very high speeds to not deviate from their original positions. At this time, the magnets are at least partially inserted into the guide groove and are guided within a defined path and move back and forth, thereby improving positional stability.

Although the description has been made above with a focus on embodiments of the present invention, this is merely an example and does not limit the present invention, and those skilled in the art will be able to understand the present invention without departing from the essential characteristics of the embodiments of the present invention. It will be apparent that various modifications and applications not illustrated above are possible.

Therefore, the scope of the present invention should be understood to include changes, equivalents, or substitutes of the technical ideas exemplified above. For example, each component specifically shown in the embodiments of the present invention can be modified and implemented. And these variations and differences in application should be construed as being included in the scope of the present invention as defined in the appended claims.

1: Lighting device
11: Upper lighting module
12: Lower lighting module
100: external housing
200: Piezoelectric plate
310, 320, 330, 340: Magnets
400: light emitting device

Claims (10)

A power generation unit disposed within the housing; And a light emitting element electrically connected to the power generation unit,
The power generation unit is,
a piezoelectric plate partially fixed within the housing, and
A lighting device comprising a plurality of magnets including a first magnet and a second magnet disposed on one surface of the piezoelectric plate and spaced apart from each other in a first direction. According to paragraph 1,
The first magnet and the second magnet each have a magnetic dipole in a third direction, and the polarity directions of the first magnet and the second magnet are opposite,
When a magnetic field is formed, the first magnet and the second magnet move in the same direction and bend the piezoelectric plate. According to paragraph 1,
A lighting device further comprising a sensor or processor that detects a bending degree or bending cycle of the piezoelectric plate. According to paragraph 1,
It further includes a first fixing part and a second fixing part that contacts one surface and the other surface of the piezoelectric plate to fix the piezoelectric plate,
The first fixing part and the second fixing part are spaced apart in a third direction perpendicular to the first direction,
A lighting device wherein, from a planar view, a bending line of the piezoelectric plate is formed between the first magnet and the second magnet. According to paragraph 4,
The first fixing part, the first magnet, and the second magnet are arranged to overlap in a second direction perpendicular to the first and third directions. Including a power generating unit disposed within the housing,
The power generation unit is,
a piezoelectric plate partially fixed within the housing, and
An energy harvesting device comprising a plurality of magnets including a first magnet and a second magnet disposed on one surface of the piezoelectric plate and spaced apart from each other in a first direction. It includes an upper module and a lower module joined by a mutual hinge structure,
The upper module is,
upper housing,
a first piezoelectric plate partially secured within the upper housing, and
It includes a first magnet and a second magnet disposed on the upper surface of the first piezoelectric plate and spaced apart from each other in a first direction,
The lower module is,
lower housing,
a second piezoelectric plate partially secured within the lower housing, and
An energy harvesting device comprising a third magnet and a fourth magnet disposed on the upper surface of the second piezoelectric plate and spaced apart from each other in the first direction. In clause 7,
The outer lower surface of the upper housing or the outer upper surface of the lower housing has an at least partially curved surface, and a cable extending in a second direction perpendicular to the first direction is interposed and fixed between the upper housing and the lower housing,
The curved surface is formed such that the first piezoelectric plate overlaps the cable in a third direction perpendicular to the first direction. In clause 7,
The upper module further includes a first fixing part for fixing the first piezoelectric plate, and the lower module further includes a second fixing part for fixing the second piezoelectric plate,
The first fixing part and the second fixing part are energy harvesting devices spaced apart in a third direction intersecting the first direction. In clause 7,
The upper module further includes a first fixing part for fixing the first piezoelectric plate, and the lower module further includes a second fixing part for fixing the second piezoelectric plate,
The first magnet is disposed on one side of the first fixture in the first direction, and the second magnet is disposed on the other side of the first fixture in the first direction,
The third magnet is disposed on one side of the second fixture in the first direction, and the fourth magnet is disposed on the other side of the second fixture in the first direction,
The first magnet and the third magnet each have a magnetic dipole in a third direction, and the polarity directions of the first magnet and the third magnet are in the same direction,
An energy harvesting device configured to cause the first magnet and the third magnet to move in different directions when a magnetic field is formed.