JPH07236221A - Wire marker lamp - Google Patents

Abstract

PURPOSE:To enhance the weatherability by providing an annular core comprising split housing pieces each applied with a winding and disposing an independent annular core oppositely thereto. CONSTITUTION:The wire marker lamp has a split cylindrical body surrounding an overhead wire 6 wherein the upper halves of a clamp part 2, a light emitting part 3, a clamp part 3, and a current transformer part 5 are formed integrally into one housing piece 61. The lower half parts of a current transformer part 1, the clamp part 2, the light emitting part 3, and the clamp part 4 are formed integrally into the other housing piece 62 wherein the upper half part of the current transformer part 1 and the lower half part of the current transformer part 5 are formed independently from the housing pieces 61, 62. Wirings are applied only to the half cores 12, 52 on the side of housing pieces 61, 62 provided individually with a winding and an LED light source 33 and the split bodies are separated electrically from each other. This structure enhances the weatherability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire indicator lamp that indicates the presence of an overhead electric wire, and more particularly to an electric wire indicator lamp that is durable against wind and rain and has high power efficiency.

[0002]

It is well known that night aviation obstruction lights are installed in tall buildings such as skyscrapers, chimneys, and steel towers.
The nighttime aviation obstruction light is provided as a sign that informs an aircraft flying at night of the existence of the above-mentioned structure that becomes an obstacle and prevents a collision or a contact accident from occurring. By installing the above-mentioned indicator lights on overhead power lines such as power lines, in addition to preventing aircraft accidents, contact accidents due to cranes during construction on the ground, or contact accidents during navigation or construction of ships on rivers or at sea. It can also be useful for prevention.

However, in order to install a marker lamp on an overhead wire, there was a problem with the light source of the marker lamp and a problem with the power source for turning on the light source, so that this kind of marker wire was not readily commercialized. The problem with the light source is that it is difficult to repair or replace the light source because the wire indicator light is installed on the overhead wire. For this purpose, it was necessary to use a light source that does not require repair or replacement, or that has a life of at least several years.
In addition, the problem with the power supply is that it is difficult to connect the power supply line from the power supply to the wire indicator light if a separate power supply is provided, and a battery is installed in the wire indicator light to eliminate the need for the power supply line. Doing so makes battery replacement difficult. If a current transformer that obtains inductive power from the electric current of the overhead wire is used as a power source, a power supply line is not necessary and replacement is also unnecessary. However, the current transformer needs a toroidal coil that goes around the overhead wire in order to obtain electromotive force from the induced magnetic field around the overhead wire. It was difficult to fit the toroidal coil onto the overhead wire by mounting it externally. Moreover, when the power source is attached to the overhead wire, it is necessary to make the power source small in terms of the weight of the power source and the wind pressure received by the power source.

To solve these problems, Japanese Utility Model Publication No. 4-53145 and Japanese Utility Model Publication No. 1-166393 have been devised. According to these known techniques, an LED (light emitting diode) is used as a light source, and the current transformer can be composed of a toroidal coil divided into two. LEDs have a longer life than incandescent lamps and discharge tubes, and can emit light with a relatively low voltage and small current. By using the LED as the light source, replacement of the light source is almost unnecessary and the power source can be downsized. In addition, by dividing the toroidal coil into two, it is easy to attach to the overhead wire.

[0005]

[Problems to be Solved by the Invention]
No. 53145 shows a concrete structure of a marker light. According to this, a two-divided body that can be attached to an overhead wire is formed, a half-divided coil is provided in each divided body, and the half-divided coils are connected to each other by electrodes. An induction coil is formed around the overhead wire by connecting with a socket. Further, a plurality of LEDs are distributed in the circumferential direction, and electrode sockets are also used at the dividing points of the wiring.

However, since this type of indicator lamp is exposed to wind and rain, the connecting portions such as the electrode sockets are easily damaged by rainwater and cannot be used for a long period of time. Although it is conceivable to seal the connection part, sufficient waterproofness cannot be obtained even if sealing is performed after joining the two divided bodies.
Moreover, it is not easy to perform the sealing in the field work.

On the other hand, in Japanese Utility Model Laid-Open No. 1-166393, a ring-shaped iron core is divided into two and a two-divided iron core is provided, and a coil is wound around one of the two-divided iron core. With this configuration,
Since an induction magnetic field is formed in the annular core, electromotive force can be obtained by winding the coil around only one core. Moreover, since the coil does not require an electrode for connection, the coil does not have a problem of durability against rainwater. However, in this invention, the LEDs distributed in each of the two divided cases are connected by the connector. Since the iron core passes a magnetic field, it may be electrically separated, but the LED has to be electrically connected, so that the connector must be used. LE as mentioned above
Since D is turned on with a relatively small current, an increase in contact resistance due to corrosion and dirt of the electrodes becomes a big problem. Therefore,
This device also has a problem of durability against rainwater.

In the latter device, the two-divided iron cores are housed in the two-divided cases, and it is necessary to assemble the two-divided cases with the overhead wire sandwiched between them in order to form the iron core in a ring shape. The whole case must be fixed to the overhead wire by assembling the two-part case at the same time. This fixing must be done firmly to withstand wind and rain. If the inner diameter of the case is larger than the outer diameter of the overhead wire when the two split cases are fitted together, the fixing becomes loose, which is inconvenient. Rather, when the overhead wire is sandwiched between the two split cases, it is advantageous for the two split cases to have a space between them for tightening. On the other hand, when the annular core of the toroidal coil has a gap, it is advantageous that the smaller the gap, the more preferably there is no gap. However, the condition for tightening the case and the condition for continuity of the annular core conflict with each other. If the two-piece iron cores come into close contact with each other when the case is tightened, the case cannot be tightened any more, and the holding force is reduced. If the two-piece iron cores are not brought into contact with each other in order to sufficiently tighten the case, a gap will be created, and the magnetic flux will leak from the gap, resulting in a decrease in the efficiency of obtaining electric power.

This problem is common to the former device. Even if the induction coil of the former invention is to be provided with an iron core, there arises a problem that the iron core hinders the electric wire from being gripped by the two-piece body of the resin mold.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve the above problems and to provide a wire indicator lamp which is durable against wind and rain and has high power efficiency.

[0011]

In order to achieve the above object, the present invention provides a housing for external fitting on an overhead wire in two parts, and a fastening member for tightening the divided housing pieces together. Two semi-annular magnetic cores each having a winding on a housing piece, a power source connected to the winding, and an LED light source to be turned on by the power source, each having no winding separate from the housing. The semi-annular magnetic core of (1) is provided so as to oppose each of the semi-annular magnetic cores having the above-mentioned windings via an overhead wire.

A tightening space is formed between the two housing pieces, and the inner diameter of the current transformer section composed of a semi-annular magnetic core having windings and a semi-annular magnetic core having no windings By making the diameter larger than the outer diameter, the joining surfaces of the semi-annular magnetic cores may be brought into close contact with each other.

The semi-annular magnetic core may be arranged at the longitudinal end of the overhead wire of the housing.

[0014]

With the above structure, the semi-annular magnetic core having the winding wire on one of the divided housing pieces and the semi-annular magnetic core having no winding wire separate from the housing surrounds the overhead wire. Forming an annular magnetic core. The induced magnetic field due to the current of the overhead wire in the annular magnetic core causes an electromotive force in the winding of the housing piece. The electromotive force causes the power source portion of the housing piece to turn on the LED light source of the housing piece. Also in the other housing piece, since the semi-annular magnetic core having the winding wire and the semi-annular magnetic core having no other winding wire form the annular magnetic core around the overhead wire, the housing piece is similarly formed. The power supply part of this is L of this housing piece
Turn on the ED light source. That is, the LEDs of both housing pieces
The light sources are electrically turned on independently of each other by the electromotive force of each winding.

There is a winding, a power supply section and an LED for each housing piece, and since these are electrically separated for each housing piece, there is no need for a connecting section, so there is also a problem of sealing of the connecting section. Does not happen.

Further, by tightening both housing pieces with an appropriate force with a tightening member, the housing can be fixed while being fitted onto the overhead wire. On the other hand, since the semi-annular magnetic core having no winding is separate from the housing, it is attached separately from the fixing of the housing and can be attached regardless of the fastening of the fastening member.
Preferably, if a space for tightening is formed between both housing pieces, it becomes easy to control the tightening force of the tightening member, and the housing is securely fixed to the overhead wire. Further, if the inner diameter of the current transformer part composed of the semi-annular magnetic core having the winding and the semi-annular magnetic core not having the winding is made larger than the outer diameter of the overhead wire, the semi-annular magnetic core having no winding. When the semi-annular magnetic core having the winding and the winding are opposed to each other via the overhead wire, the semi-annular cores are brought into close contact with each other without being restricted by the overhead wire. Therefore, a ring-shaped magnetic core with no gap is formed, and LE from the current of the overhead wire
The power efficiency for obtaining the power of the D light source is increased.

According to the present invention, two semi-annular magnetic cores having windings and two semi-annular magnetic cores having no windings are used.
Two annular magnetic cores having a half turn of the winding are formed. The winding of each annular magnetic core obtains an electromotive force according to the current passing through the annular core. However, when the electric wire indicator light is attached, the electric current flowing through the overhead electric wire is shunted to the housing of the electric wire indicator light. The current flowing through the housing does not contribute to the electromotive force because it passes through the outside of the annular magnetic core. When the annular magnetic core is arranged inside the housing, the shunt component that does not contribute to this electromotive force increases. When the annular magnetic core is arranged at the longitudinal end of the overhead wire of the housing,
Most of the current will pass through the ring core, contributing to the electromotive force. That is, by arranging the semi-annular magnetic core at the end of the housing in the longitudinal direction of the aerial wire, in the longitudinal direction of the aerial wire, the annular magnetic core, most of the housing including the fastening member,
The annular magnetic cores are arranged in order, and most of the electric current of the overhead wire is used for electromotive force, which improves power efficiency.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, the electric wire indicator lamp of the present invention is formed in a substantially cylindrical shape so as to cover the periphery of the overhead wire 6, and the current transformer is sequentially arranged in the longitudinal direction of the overhead wire 6. It has a part 1, a clamp part 2, a light emitting part 3, a clamp part 4, and a current transformer part 5. Both parts are divided into two parts so that they can be fitted onto the overhead wire 6. Clamp part 2,
The light emitting part 3, the clamp part 4, and the upper half of the current transformer part 5 are 1
The two housing pieces 61 are integrally formed.
The lower half of the current transformer part 1, the clamp part 2, the light emitting part 3, and the clamp part 4 are integrally formed as another housing piece 62. The upper half of the current transformer portion 1 and the lower half of the current transformer portion 5 are formed separately from the housing pieces 61 and 62, respectively. That is, the electric wire indicator light is divided into four parts.

The clamp portion 2 and the clamp portion 4 are intended to be fixed when the electric wire indicator lamp is fitted onto the overhead electric wire 6, and both have the same structure. A sectional view of the clamp portion 2 is shown in FIG. In the clamp part 2,
The flanges 63, 63 formed so as to extend radially outward from the respective housing pieces 61, 62 are arranged to face each other.
A bolt 64 and a nut 65 for tightening the bolt are provided. The bolt 64 and the nut 65 are the tightening member 6
It is 6. In the example of FIG. 3B, the housing piece 6
Although there are bolts 64 and nuts 65 on both sides in the radial direction of 1 and 62 to separate the housing pieces 61 and 62 from each other, one side of both housing pieces 61 and 62 may be openably and closably connected by a hinge member. In that case, it becomes easy to attach to the overhead wire. A housing piece 61 in the clamp portions 2 and 4,
The inner diameter of 62 is substantially equal to the outer diameter of the overhead wire 6, and the inner circumference thereof is formed to be slightly smaller than the semicircle. Therefore, when the insides of the clamp portions 2 and 4 of both housing pieces 61 and 62 contact the overhead wire 6, a gap g is formed between the flanges 63 and 63 facing each other.

The current transformer section 1 and the current transformer section 5 are composed of an overhead wire 6
It is for obtaining the electric current by induction from the electric current flowing in the both, and both have the same structure. A cross-sectional view of the current transformer portion 1 is shown in FIG. The current transformer unit 1 includes an annular magnetic core 71 having a predetermined thickness at the outer periphery and a space having a predetermined diameter formed in the center, windings (not shown) wound around the annular magnetic core 71, and And an outer shell 72 and a housing piece 62 for covering. The annular magnetic core 71 of the current transformer portion 1 is composed of a semi-annular magnetic core 11 provided in the upper half of the current transformer portion 1 and a semi-annular magnetic core 12 provided in the lower half of the current transformer portion 1. The magnetic core 11 has no winding, and only the semi-annular magnetic core 12 has a winding. The upper half of the current transformer portion 1 is covered with the outer shell 72, and the lower half is covered with the housing piece 62. The outer shell 72 of the upper half of the current transformer unit 1 is separate from the housing pieces 61 and 62. The outer shell 72 and the flanges 73, 73 formed so as to extend radially outward from the housing piece 62 face each other, and a bolt 74 and a nut 75 for tightening the facing flanges 73, 73 are provided. Has been. In the example of FIG. 3A, there are bolts 74 and nuts 75 on both sides of the outer shell 72 in the radial direction, and the outer shell 72 and the housing piece 62 can be separated into two parts. A hinge member may be connected to one side of the housing piece 62 so as to be openable and closable. The inner diameters of the semi-annular magnetic cores 11 and 12 are slightly larger than the outer diameter of the overhead wire 6. For this reason, when the two semi-annular magnetic cores 11 and 12 are combined, there is a room for accommodating the overhead wire 6 in the core part, so that the semi-annular magnetic cores 11 and 12 are closely attached to each other without being restricted by the overhead wire 6. Has become.

As shown in FIG. 1, the light emitting section 3 is composed of a large number of LEDs 301, and the LEDs 301 are arranged at predetermined intervals in the circumferential direction and the longitudinal direction. Each LED3
01 is placed so that the direction of light emission is in the radial direction of the housing 60 including both housing pieces 61 and 62. Further, the light emitting unit 3 accommodates a power supply unit for each LED 301 in an inner layer unit (not shown).

As shown in FIG. 2, the electric wire indicator lamp circuit of the present invention is provided in each of the housing pieces 61 and 62, and the two circuits have the same structure. The winding 81 wound around the semi-annular magnetic core 12 is connected to the power supply control circuit 32. The power supply control circuit 32 configures the power supply unit 82 on the housing piece 62 side, and specifically includes a rectifier circuit and a constant voltage circuit, and generates a desired power supply voltage from the current obtained by the winding 81. It is a thing. LED light source 3
Reference numeral 4 denotes the LED 301 of the housing piece 62 of the light emitting unit 3 connected in series and in parallel with the control resistor. On the other hand, the winding wire 83 wound around the semi-annular magnetic core 52 is connected to the power supply control circuit 31, and the power supply output of the power supply control circuit 31, which is the power supply unit 82, is connected to the LED light source 33. LED light source 33
The LED 301 of the housing piece 61 of the light emitting unit 3 is connected in series and in parallel with the control resistor. The four parts separated by chain lines in the figure are the housing pieces 61, 62,
While showing the four divisions of the outer shells 72 and 72, it also shows that these divisions have no electrical connection relationship.

Next, the operation of the embodiment will be described.

The semi-annular magnetic core 11 and the semi-annular magnetic core 12 form an annular magnetic core 71 around the overhead wire 6. The induced magnetic field due to the current of the overhead wire 6 in the annular magnetic core 71 produces an electromotive force in the winding 81 of the semi-annular magnetic core 12. Therefore, the power supply unit 82 turns on the LED light source 34. On the other hand, since the semi-annular magnetic core 51 and the semi-annular magnetic core 52 form the annular magnetic core 71 around the overhead wire 6, the LED light source 33 is similarly turned on. That is, the LED light sources 33 and 34 are electrically turned on independently of each other by the electromotive force of the windings 81 and 83.

The windings 81 and 83 have housing pieces 61 and 62.
Only on the side semi-annular magnetic core 12, 52, and for each of the housing pieces 61, 62, the windings 81, 83 and the power supply unit 8 are provided.
2 and 82 and the LED light sources 33 and 34, which are electrically separated for each divided body, the windings 81 and 83
Also, the LED light sources 33 and 34 do not require a connecting portion, and therefore, the problem of sealing the connecting portion does not occur. Further, it is possible to carry out a waterproof treatment in advance so that rainwater does not enter each housing piece 61, 62.

Further, by fastening both housing pieces 61, 62 with a fastening member 66 with an appropriate force, the housing can be fixed while being fitted onto the overhead wire.
On the other hand, since the semi-annular magnetic core having no winding is separate from the housing, it is attached separately from the fixing of the housing and can be attached regardless of the fastening of the fastening member.

In this embodiment, both housing pieces 6
When the insides of the clamp portions 2 and 4 of the Nos. 1 and 62 contact the overhead wire 6, a gap g is formed between the two flanges 63 and 63 facing each other, and this gap g serves as a tightening gap. That is, the tightening force of the tightening member 66 can be easily adjusted, and the housing 60 can be reliably fixed to the overhead wire. Further, in the present embodiment, the semi-annular magnetic cores 11, 1
Since the inner diameters of 2, 51 and 52 are slightly larger than the outer diameter of the overhead wire 6, the semi-annular magnetic core 1 is not restricted by the overhead wire 6.
1, 12 (51, 52) are in close contact with each other. Therefore, the annular magnetic core 71 having no gap is formed, and the power efficiency of obtaining the electric power of the LED light sources 33 and 34 from the electric current of the overhead wire 6 is increased.

In the present invention, each annular magnetic core 7
The winding of No. 1 obtains an electromotive force according to the electric current passing through its ring portion. However, the current flowing through the overhead wire 6 is
It splits to 0 and flows. The current flowing through the housing 60 passes outside the ring of the ring-shaped magnetic core 71 and therefore does not contribute to the electromotive force. For example, when the annular magnetic core 71 is arranged between the clamp parts 2 and 4, the overhead wire 6-clamp part 2-housing 60-
A current passage of the clamp portion 4-the overhead wire 6 is formed, and a shunt component that does not contribute to electromotive force flows through this current passage. In the above-mentioned embodiment, since the annular magnetic core 71 is located at the end portion of the housing 60 in the longitudinal direction of the overhead wire, most of the current will pass through the annular core portion of the annular magnetic core 71, contributing to the electromotive force. . That is, most of the current of the overhead wire 6 is used for electromotive force, and the power efficiency is increased.

Further, if the secondary current induced by the magnetic flux induced in the annular magnetic core 71 is also induced in the parts other than the coil windings 81, 83, the conversion efficiency will be remarkably lowered, so that the housing 60, Care must be taken to prevent the formation of a secondary current circuit by the outer shell 72, the electric wire 6, and the like.

The shunt component may be eliminated by electrically insulating the housing 60.

When mounting the wire indicator light of the present invention on the overhead wire 6, a protective armor rod is wound around the overhead wire 6 so that the armor rod is interposed between the wire indicator light and the overhead wire 6. May be reinforced.

In this embodiment, the power source section 82 is housed in the inner layer of the light emitting section 3, but the clamp sections 2, 4 or the current transformer sections 1, 5 are included.
May be housed in. When the power supply unit 82 is housed in the inner layer of the light emitting unit 3, the diameter of the light emitting unit 3 increases, and a large number of LEDs are arranged in the circumferential direction.
301 can be arranged. If the power supply unit 82 is provided in a place other than the light emitting unit 3, the diameter of the light emitting unit 3 becomes small, and instead, the light emitting unit 3
Since the LED can be elongated in the longitudinal direction, a large number of LEDs 301 can be arranged in the longitudinal direction.

[0034]

The present invention exhibits the following excellent effects.

(1) Since there is no energizing circuit between the divided bodies, it is not necessary to expose the contactor or the conductive portion, and there is no fear of deterioration due to rainwater. In addition, waterproofing after mounting is also unnecessary. Furthermore, each divided body can be individually waterproofed, and furthermore, waterproofing can be performed in a factory or the like. Therefore, the reliability of waterproofing is improved over a long period of time, and the mounting work is simplified.

(2) The power conversion efficiency is excellent when acquiring the power source for the light source.

[Brief description of drawings]

FIG. 1 is an external view of a wire indicator lamp showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an electric circuit and a division section of the electric wire indicator lamp of the present invention.

FIG. 3 (a) is a cross section of a current transformer part of the electric wire marker lamp of the present invention,
(B) It is sectional drawing which shows the cross section of a clamp part.

[Explanation of symbols]

 6 Aerial wire 11, 12 Semi-annular magnetic core 33, 34 LED light source 60 Housing 61, 62 Housing piece 66 Tightening member 71 Annular magnetic core 81, 83 Winding 82 Power supply section

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Koji Otaka, 4-33 Komachi, Naka-ku, Hiroshima City, Hiroshima Prefecture, Chugoku Electric Power Co., Inc. (72) Masahiko Toyoshima, 5-1-1, Hidaka-cho, Hitachi City, Ibaraki Prefecture Hitachi Cable Co., Ltd. Power Systems Laboratory (72) Inventor Takeshi Abe 11-10 Motomachi, Naka-ku, Hiroshima City, Hiroshima Prefecture Hitachi Cable Co., Ltd. China Branch (72) Inventor Shoji Kuma 3550 Kidayomachi, Tsuchiura City, Ibaraki Prefecture Address Hitachi Cable Ltd. Advanced Research Center (72) Inventor Naofumi Tate 3550 Kidayomachi, Tsuchiura City, Ibaraki Prefecture Hitachi Cable Ltd. Advanced Research Center (72) Inventor Masachi Shibata 3550 Kidayomachi, Tsuchiura City, Ibaraki Prefecture Hitachi Cable Ltd. Advanced Research Center

Claims (3)

[Claims] 1. In an electric wire indicator lamp which is mounted on an overhead wire and which lights an indicator lamp with electric power obtained by induction from the current of the overhead wire, a housing to be fitted onto the overhead wire is divided into two parts, and the housing is divided into two parts. And a semi-circular magnetic core having windings on both housing pieces, a power source connected to the windings, and an LED light source turned on by the power source.
An electric wire indicator lamp, wherein two semi-annular magnetic cores having no winding separate from the housing are provided so as to face each semi-annular magnetic core having the above-mentioned windings through an overhead wire. 2. A tightening space is formed between the housing pieces, and an inner diameter of a current transformer section composed of a semi-annular magnetic core having a winding and a semi-annular magnetic core having no winding is aerial. The electric wire indicator lamp according to claim 1, wherein the joint surface of the semi-annular magnetic cores is brought into close contact with each other by making the diameter larger than the outer diameter of the electric wire. 3. The electric wire marker lamp according to claim 1, wherein the semi-annular magnetic core is arranged at an end portion in the longitudinal direction of the overhead electric wire of the housing.