KR100853099B1 - Street light foundation - Google Patents

Abstract

The present invention relates to a street lamp base, and more particularly, to a street lamp base having a branch pipe formed with an upper tube, a conduit, and a ground pipe integrally formed inside a concrete base, and having a tip-type ground copper plate attached to the bottom of the street lamp base. will be.

As described above, according to the present invention, it is easy to install street lamps, there is no need for additional grounding work, and the earthing ability is extremely improved by the tip of the ground copper plate. There is an effect that can lower the height of the foundation corresponding to the wind speed, the height of the same streetlight.

Street lamps, street lamps, grounding, electric shock, triangular tips, earth pressure wings, 4 emission

Description

Street light foundation {STREET LIGHT FOUNDATION}

1 is a schematic perspective view showing a state in which a street lamp is installed on the top of the street lamp base according to the present invention.

Figure 2a is a half sectional perspective view of a street lamp base according to the present invention.

Figure 2b is a cross-sectional perspective view showing the wire and ground wire inserted in Figure 2a.

Fig. 2C is a sectional view of a state using a conventional conduit and a tip-type ground copper plate.

Figure 2d is a cross-sectional view of a state using a plurality of conduits and tip-type ground copper plate.

Fig. 2E is a perspective view of the state in which Fig. 2D is implemented.

FIG. 2F is a cross-sectional view of a short implementation of a plurality of conduits in FIG. 2D;

Fig. 2G is a perspective view of a state in which Fig. 2F is implemented.

3 is a schematic perspective view of a bolt and bolt reinforcement;

4 is a schematic perspective view of a branch pipe in which the upper pipe, the conduit and the ground pipe are integrally formed;

5 is an exemplary branch pipe showing various aspects of the branch pipe.

Figure 6a is a perspective view showing the connection between the grounding copper plate and the ground line formed with a triangular tip to the bottom.

Figure 6b is a perspective view of the ground copper plate to facilitate the attachment of the ground copper plate by drilling a hole in the center of the ground copper plate.

Figure 6c is a partial perspective view showing the ground copper plate upside down with a triangular tip facing up;

Figure 6d is a perspective view of a ground copper plate formed with a rectangular tip.

6E is a perspective view of a ground copper plate that is bent to form a bent portion;

Figure 7a is a cross-sectional view showing a state in which the ground wire connected to the ground copper plate penetrated to the grounding tube plug inserted into the grounding tube.

Figure 7b is a cross-sectional view showing the grounding tube plug fitted to the grounding tube, when the hole is formed in the ground copper plate.

Figure 8a is a perspective view showing a street lamp foundation is formed with a earth pressure wing is attached to the horizontal system.

Fig. 8B is a perspective view showing a rectangular streetlight foundation with a toe pressure vane formed and a horizontal gauge attached thereto;

Figure 8c is a cross-sectional view of the earth pressure blade is formed and the ground copper plate is implemented on the earth pressure wing.

*** Explanation of main parts of drawing ***

10. Concrete foundation 12. Projection 14. Earth pressure wing

20. Branch pipe 22. Upper pipe 24. Conduit pipe

26. Grounding pipe 30. Bolt 32. Bolt reinforcement

40. Ground copper plate 42. Tip 44. Hole

50. Grounding wire 54. Grounding tube plug 60. Wire

70. Street lamp 72. Nut 74. Coupling hole

80. Level

The present invention relates to a street lamp base, and more particularly, a branch pipe having an upper tube, a conduit, and a ground tube integrally formed inside the concrete foundation, and attaching a tip-type ground copper plate to the bottom of the street lamp foundation, and the side of the foundation. By forming the earth pressure wing in the lower part of the lamp, it is easy to install the street lamp pole, and there is no need for separate grounding work, and the earthing power is greatly improved by the tip of the ground copper plate, and the earth pressure wing is formed on the side of the lower part of the foundation. The present invention relates to a street lamp base having a lower base height corresponding to the same wind speed and the same lamp column height.

Korean Patent Laid-Open Publication No. 10-2005-0015899 includes a storage box in the interior of a streetlight base and stores electric wires in the storage box, such as a street lamp by a fork lane during other works such as city gas pipeline construction, water and sewage construction, underground cable construction, and landscaping construction. Disclosed is a street light foundation for preventing a short circuit or a short circuit due to pulling or breaking of a wire connected between a street light and a street light, and attaching a ground copper plate to a lower portion of the base to ground the street lamp column through a bolt 30. .

Republic of Korea Utility Model Registration No. 20-420012 discloses a streetlight foundation formed with three conduits on the side.

However, the ground copper plate used in the above-mentioned conventional techniques has a need to keep the ground resistance within the reference value because the ground resistance exceeds the reference value in the mountainous region, the rock region, etc., and it is easy to install by lowering the height of the streetlight foundation. There was a need to lower the unit price, and at the construction site, there were four need for street lamp foundations that can be wired in various directions, rather than two or three side conduits formed.

The present invention is to solve the problems of the prior art as described above, by embedding a branch pipe formed integrally with the upper tube, conduit, and ground tube in the interior of the concrete foundation, by attaching a tip-type ground copper plate on the lower part of the street lamp base, Easy installation of street lamp poles, no need for additional grounding work. Extremely improve the grounding ability by the tip of the ground copper plate, and the earth pressure wing is formed on the lower side of the foundation to correspond to the same wind speed and the same street lamp pole height. The purpose of the present invention is to provide a street lamp foundation in which the height of the foundation is lowered and the grounding state is maintained by the ground pressing the ground copper plate surrounding the earth pressure wing even when the ground subsides and the ground in the center of the concrete base is depressed. do.

Street light base according to the present invention,

A concrete foundation, buried in the concrete foundation, the upper part of which protrudes to an upper portion of the concrete foundation, a bolt on which a street lamp is fixed, an upper pipe directed from the top of the concrete foundation to the center, and the concrete at the bottom of the upper pipe; A branch pipe formed integrally with a conduit extending to the side of the foundation, a ground copper plate attached to the lower portion of the concrete foundation, and a ground wire attached to the ground copper plate and drawn out through the interior of the concrete foundation to the ground to ground the street lamp. It includes.

The branch pipe further includes a ground pipe extending from the lower part of the upper pipe to the lower part of the concrete foundation, and the ground wire is preferably drawn out to the upper pipe through the inside of the ground pipe.

The ground copper plate, the surface is bent, the pointed portion is directed downward, or the surface is cut and the tip formed by bending the cut surface is preferably directed downward.

The lower side of the concrete foundation is preferably protruded to the side by a predetermined width to form a earth pressure wing.

The lower edge portion of the concrete foundation is preferably formed with a protrusion protruding downward by a predetermined height.

It is preferable that the horizontal system is attached or embedded on the upper surface of the concrete foundation.

Two of the conduits are disposed on one side, preferably one on each other side adjacent to the side.

The bolt is preferably extended to the lower portion of the base and fastened to the ground copper plate.

Another street lamp foundation according to the present invention is embedded in the concrete foundation, and the concrete foundation, the upper portion of the bolt protruding to the upper portion of the concrete foundation fixed to the street lamp pole, and embedded through the upper side in the side of the concrete foundation And a grounding wire attached to the lower portion of the concrete base, and a grounding line attached to the grounding copper plate and drawn through the inside of the concrete base to be drawn upward to ground the lamppost.

The ground copper plate, the surface is bent, the pointed portion is directed downward, or the surface is cut and the tip formed by bending the cut surface is preferably directed downward.

It further comprises a ground pipe which is embedded through the upper portion from the bottom of the concrete foundation, the ground wire is preferably drawn out through the inside of the ground pipe.

The lower side of the concrete foundation is preferably protruded to the side by a predetermined width to form a earth pressure wing.

The lower edge portion of the concrete foundation is preferably formed with a protrusion protruding downward by a predetermined height.

It is preferable that the horizontal system is attached or embedded on the upper surface of the concrete foundation.

Two of the conduits are disposed on one side, preferably one on each other side adjacent to the side.

The bolt is preferably extended to the lower portion of the base and fastened to the ground copper plate.

Another street lamp foundation according to the present invention is embedded in the concrete foundation, and the concrete foundation, the upper portion of the bolt protruding to the upper portion of the concrete foundation fixed to the street lamp pole, and embedded through the upper side in the side of the concrete foundation The conduit and the lower portion of the side of the concrete foundation protruding to the side by a predetermined width, the earth pressure blades, a ground copper plate wrapped in any one or two or more of the upper, side, lower surface of the earth pressure blade, and attached to the ground copper plate And it penetrates through the interior of the concrete foundation and includes a grounding wire for grounding the street lamp pole.

The ground copper plate is preferably all or part of the surface is bent toward the bottom pointed, or the surface formed by cutting the cut surface is bent toward the bottom.

It further comprises a ground pipe which is embedded through the upper portion from the bottom of the concrete foundation, the ground wire is preferably drawn out through the inside of the ground pipe.

It is preferable that the lower side of the concrete foundation protrudes laterally by a predetermined width to form a earth pressure wing.

The lower edge portion of the concrete foundation is preferably formed with a protrusion protruding downward by a predetermined height.

It is preferable that the horizontal system is attached or embedded on the upper surface of the concrete foundation.

Two of the conduits are disposed on one side, preferably one on each other side adjacent to the side.

The bolt is preferably extended to the lower portion of the base and fastened to the ground copper plate.

Hereinafter, with reference to the drawings will be described in detail. However, these drawings are for illustrative purposes only and the present invention is not limited thereto.

1 is a schematic perspective view showing a state in which a street lamp is installed on the top of the street lamp base according to the present invention.

Referring to Figure 1, the street lamp base according to the present invention, the concrete base 10, the upper tube 22 and bolt 30 formed on the upper portion of the concrete base 10 and the conduit 24 formed on the side and the base Consists of a protrusion 12 formed at the lower edge of the.

Concrete base 10 is a cement-based concrete, such as ready-mixed concrete, gravel, sand, water and the like is mixed and cured, and if necessary, fiber reinforcement, rapid curing agent is used.

The ground line 50 and the wire 60 are drawn out to the upper pipe 22. The ground wire 50 is connected to the ground copper plate under the base 10, and the wire 60 is connected to the conduit 24.

Four bolts 30 are typically buried so as to correspond to the coupling hole 74 of the street lamp 70 and the number may vary as necessary. When the street lamp 70 is seated on the upper portion of the base 10, it is screwed and fastened by the nut 72.

Protruding portion 12 formed at the lower edge of the foundation is a street lamp foundation according to the present invention is manufactured in the factory is embedded in the construction site, so that the top of the foundation 10 to maintain the flatness even if the conditions of the site is not completely flat . In addition, the protrusion 12 protects the ground copper plate mounted on the lower portion of the base 10.

Figure 2a is a half sectional perspective view of a street lamp base according to the present invention.

Referring to Figure 2a, the street lamp base according to the present invention, the concrete foundation 10, the upper pipe 22, the conduit tube 24, the ground pipe 26 integrally formed branch pipe 20, bolts 30 ), The bolt reinforcement 32, the ground copper plate 40 attached to the lower portion of the base 10, and the protrusion 12 formed on the corner of the lower portion of the base 10.

The branch pipe 20 in which the upper pipe 22, the conduit 24, and the ground pipe 26 are integrated is located at the center.

The bolts 30 are four at the top of the concrete foundation 10 (two because they are half-sections, one is almost invisible by the top pipe), and the bolt reinforcement 32 is formed inside the concrete foundation 10. Are connected to each other.

The bolt reinforcing rod 32 is configured to resist a large force when an external impact is applied to the bolt 30, and connects four bolts 30 to each other. Connection method can be connected by various methods such as screwing, welding, fixing with wire.

The ground copper plate 40 is attached to the lower portion of the concrete foundation 10. Attaching the ground copper plate 40 to the lower part of the concrete foundation 10 may use an adhesive, nail nails to fix the concrete nails, or, before the concrete is cured, appropriate fastening means may be attached to the concrete foundation 10. After being inserted into the lower part and cured and fixed thereto, the bolt 30 can be attached using various methods such as extending to the lower part of the concrete foundation 10 and fastening it using nuts.

FIG. 2B is a half sectional perspective view showing the wire and the ground wire inserted in FIG. 2A.

Referring to FIG. 2B, the wire 60 is inserted into the conduit 24 from the side of the concrete foundation 10, and is led out through the center of the branch pipe 20 to the top of the upper pipe 22.

The wire 60 drawn out to the upper tube 22 is connected to the interior of the street lamp (70 in Figure 1) to supply electricity to the street lamp.

One end of the ground wire 50 is attached to the ground copper plate 40. The ground wire 50 is welded to the ground copper plate 40 with copper, lead or the like, or is fixed by pressure.

The other end of the ground line 50 passes through the center of the branch pipe 20 and is drawn out to the upper portion of the upper pipe 22. The ground wire 50 drawn out to the upper tube 22 is connected to the inside of the street lamp (70 of FIG. 1) and grounded, or is connected to the outside of the street lamp (70 of FIG. 1) or the bolt 30 is grounded.

Fig. 2C is a perspective view of a state in which a conventional conduit and a tip-type ground copper plate are used.

Referring to Figure 2c, the conduit 24 used a corrugated tube (wrinkles are omitted for convenience of illustration) used in the conventional streetlight base.

At the lower edge of the concrete foundation 10, a protrusion 12 is formed.

In addition, a ground copper plate 40 is attached to the center of the lower portion of the concrete foundation 10, and the ground copper plate 40 has a triangular tip 42 formed thereon. Although not shown in detail, a hole is formed in the center of the ground copper plate 40, and the ground pipe 26 is exposed downward through the hole.

In FIG. 2C, the ground pipe 26 is not integrally formed with the conduit 24 but is exposed to the upper portion of the concrete foundation 10 separately.

In FIG. 2A or FIG. 2B, the ground pipe 26 may be formed separately as in FIG. 2C.

The ground pipe 26 is excluded from the configuration, and a ground wire (not shown) may be embedded directly in the concrete foundation 10.

2D is a cross-sectional view of a state using a plurality of conduits and a tip-type ground copper plate.

Looking at Figure 2d, it is the same as Figure 2c except that the conduits 24 do not overlap each other at the top.

FIG. 2E is a perspective view of a state in which FIG. 2D is implemented.

Referring to Figure 2e, the street lamp base according to the present invention has four conduits 24.

Two conduits 24 are formed on the right front side, and the remaining two conduits are formed on the left front side and the right rear side, respectively.

When four conduits 24 are formed, the front side (right side of the figure) when the street lamp foundation or the conduits 24 on both sides (left front side and right rear side of the drawing) that are to be installed at the position where the electric wires are branched is not available Since two conduits 24 on the front side can be used, they are useful in construction sites.

Bolt reinforcement 32 in Figure 2e is not shown for ease of observation.

FIG. 2F is a cross-sectional view of a short implementation of a plurality of conduits in FIG. 2D, and FIG. 2G is a perspective view of a state in which FIG. 2F is implemented.

2F and 2G, the street lamp base according to the present invention does not expose the conduit tube 24 to the top, so that inconveniences such as being caught when installing street lamps are eliminated.

3 is a schematic perspective view of a bolt and bolt reinforcement;

3, the bolt 30 is L-shaped, four bolts 30 are connected by the bolt reinforcement 32.

In the figure, a screw is omitted from the upper part of the bolt 30.

Although the bolt reinforcing bar 32 is shown in one piece in the drawing, it is possible to reinforce the bolt 30 in various forms as necessary. For example, four rods may be welded to each bolt 30 or fixed with wires without being integrated, and may be reinforced one more time in the middle without only one reinforcement at the bottom.

4 is a schematic perspective view of a branch pipe in which the upper pipe, the conduit, and the ground pipe are integrally formed.

Looking at Figure 4, the upper tube 22 is thick and straight enough to enter the forearm of the adult, the conduit 24 is branched to the left and right arcs from the lower side of the upper tube 22, the thickness is the upper tube ( It is preferable to go to 22).

The lower portion of the upper tube 22 is attached to the ground tube 26, the thickness thereof may be enough to pass through one or two ground wires.

The branch pipe 20 may not be integral. For example, a hole may be drilled in the upper tube 22, and the conduit 24 and the ground tube 26 may be inserted and then attached.

In addition, all or the lower part of the upper tube 22 may be a rectangular tube and an embossed tube instead of a cylindrical shape. When the branch pipe 20 is made of a prefabricated, the upper pipe 22 may be used to easily drill the hole for the assembly of the conduit 24 using a square tube.

5 is an exemplary view illustrating a branch pipe showing various aspects of the branch pipe.

Referring to Figure 5, (a) is a conduit tube 24 is in direct contact with the ground pipe 26, (b) is the same shape as the branch pipe 20 shown in Figure 4, (c) is a ground pipe (26) has the same diameter as the upper tube 22, (d) can be used when the grounding tube 26 is not necessary, and (e) is flexible to the lower portion of the upper tube 22 to the grounding tube (26) (F) is a form in which both the conduit tube 24 and the ground tube 26 are connected to the lower portion of the upper tube 22.

In the above (a) ~ (f), the upper tube 22 may be used in a circular tube, square tube, hexagonal tube, and the like. If necessary, the ground pipe 26 may also use a square tube or a square tube.

Figure 6a is a perspective view showing the connection relationship between the ground copper plate and the ground line formed with a triangular tip to the bottom.

6A, a number of triangular tips 42 are shown. The triangular tip 42 is made by cutting a triangle on the copper plate 40 and the other two sides except for one side, and then bending the triangle based on one side that is not cut.

The triangular tip 42 can vary its size. The size (height) of the triangular tip 42 is preferably formed to be similar to or lower than the height of the protrusion 12 of FIG. 1 or 2A, 2B. The street lamp base according to the present invention typically needs to be loaded and transported in a truck, and if the height of the triangular tip 42 is higher than the height of the protrusion 12, the triangular tip 42 is crushed to the bottom of the truck and thus cannot serve. It may be. The protrusion 12 is also a necessary component for the maintenance of the triangular tip 42.

The ground wire 50 is attached to the ground copper plate 40. One end of the ground wire 50 is attached to or attached to the ground copper plate 40 or pressed to form a tab 52.

Figure 6b is a perspective view of a ground copper plate to facilitate the attachment of the ground copper plate by drilling a hole in the center of the ground copper plate.

Referring to Figure 6b, a hole 44 is formed in the center of the ground copper plate (40).

The hole 44 is preferably drilled at a position corresponding to the ground pipe 26 of FIG. 1 or 2A or 2B, and the ground wire 50 is even after the ground copper plate 40 is attached to the lower portion of the concrete foundation 10. It may be connected to the ground copper plate (52).

The hole 44 attaches the ground copper plate 40 to the lower portion of the concrete foundation 10 without cutting the protruding ground tube 26 even when the ground tube 26 protrudes from the lower portion of the concrete foundation 10. Make it work.

Since the surface of the ground copper plate is not directly visible in FIG. 2A or FIG. 2B, the schematic view is shown in hidden line, and thus the triangular tip of FIG. 6A or 6B is not shown. 2A or 2B, it is not necessary to use a ground copper plate having a triangular tip, and a flat plate without a triangular tip may be used.

Fig. 6C is a partial perspective view showing the triangular copper plate upside down with the triangular tip facing upwards.

Forming a triangular tip 42 on the ground copper plate 40 results in lower ground resistance at the same topography, at the same humidity, and at the same load of the same streetlight base. Therefore, when the triangular tip 42 is formed in the lower portion of the ground copper plate 40, even in the mountain zone, rock zone where the ground resistance does not come out well can exhibit a low ground resistance can facilitate the construction of the streetlight base.

In addition, the ground resistance is lower even in a good ground resistance area is safer when a short circuit, it is possible to reduce the probability of electric shock accident even if the street lamp is flooded by rain or heavy rain.

6D is a perspective view of a ground copper plate on which a rectangular tip 43 is formed. The ground copper plate 40 is cut into a letter C among the rectangles, and the ground copper plate cut out based on one side that is not cut is bent downward to generate a rectangular tip 43. The rectangular tip 43 may have a higher ground resistance than the triangular tip 42 of FIGS. 6A to 6C, but may be easily used because the tip is unlikely to detach.

6E is a perspective view of a ground copper plate that is bent to form a bent portion 46. The ground copper plate 40 is bent properly to form the bent portion 46. The bent portion 46 faces downward, and may have a higher ground resistance than the rectangular tip 43 of FIG. 6d, but eliminates the possibility of the tip being detached.

FIG. 7A is a cross-sectional view showing a ground wire connected to a ground copper plate through a ground pipe plug inserted into a ground pipe; FIG.

Looking at Figure 7a, the grounding pipe stopper 54 is fitted in the lower portion of the grounding pipe (26).

In the center of the grounding pipe plug 54, a hole through which the grounding wire 50 can penetrate is drilled, and the grounding wire 50 is drawn downward from the grounding pipe 26 via the hole and welded to the grounding copper plate 40. (52).

A triangular tip 42 is formed below the ground copper plate 40.

The ground pipe plug 54 prevents water from flowing upward through the ground pipe 26.

7B is a cross-sectional view showing a grounding pipe plug inserted in a grounding pipe when a hole is formed in the grounding copper plate.

Looking at Figure 7b, it can be seen that the grounding pipe plug 54 is exposed to the lower portion of the ground copper plate (40).

The ground copper plate 40 is not cut off from the left side and the right side, but the center portion is shown as if it is disconnected for convenience of understanding that the hole 44 of FIG. 6B is formed. In addition, for convenience of understanding, the triangular tip 42 is also omitted.

In FIG. 7A, after the ground wire 50 is welded to the ground copper plate 40 in advance, the ground pipe stopper 54 is inserted into the ground wire 50, and the ground pipe stopper 54 is inserted into the ground pipe 26. When the ground copper plate 40 approaches the lower portion of the concrete foundation 10 while pulling the ground line 50 from the upper portion of the concrete foundation 10, it should be attached to the ground line 50. When welding the ground copper plate 40, the time when the ground copper plate 10 is attached to the lower portion of the concrete foundation 10, the time when the ground pipe plug 54 is inserted into the ground pipe 26, etc. It can mix. That is, there is an advantage that the order can be adjusted at will.

8A is a perspective view showing that the lower portion of the concrete foundation 10 protrudes laterally by a predetermined width to form the earth pressure wing 14, and the horizontal system 80 is attached to the upper portion of the foundation 10.

FIG. 8B is a perspective view of a rectangular streetlight foundation, in which a lower portion of the concrete foundation 10 protrudes laterally by a predetermined width to form a toe wing 14, and a horizontal gauge 80 is attached to the upper portion of the foundation 10.

FIG. 8B is the same as FIG. 8A except that the earth pressure wing 14 is not formed in a right-angled portion of a rectangular streetlight base having a vertical and vertical side shape.

8A and 8B, the earth pressure blades 14 are formed at a lower portion of the concrete foundation 10 in a predetermined width (about 5 cm to about 10 cm). The earth pressure wing 14 serves to reduce the weight, volume or height of the street light foundation by forming the earth pressure when the concrete foundation 10 is embedded in the ground, the soil is covered with the top of the earth pressure wing 14.

By inserting a wire as needed during concrete placement, the earth pressure wing 14 can be prevented from falling even if the earth pressure wing 14 is impacted from the outside after curing.

One or two horizontal gauges 80 may be attached or buried in the upper portion of the concrete foundation 10 as necessary. When the leveling system 80 embeds the concrete foundation 10, the upper surface of the foundation 10 helps to be horizontal.

Figure 8c is a cross-sectional view of the earth pressure blade is formed and the ground copper plate is implemented on the earth pressure wing.

Referring to Figure 8c, the ground copper plate 40 is attached to the upper, side, and bottom of the earth pressure wing (14). The ground copper plate 40 may be formed on a part of the earth pressure wing 14, or may surround the entire earth pressure wing 14.

A tip 42 is formed at the bottom of the ground copper plate 40. The tip 42 may not be formed.

When the ground copper plate 40 is attached to the earth pressure wing 14 as shown in FIG. 8C, even if the ground subsides and the ground corresponding to the center portion of the foundation 10 is recessed, the ground copper plate 40 is not recessed. In particular, there is an advantage in that the ground state is maintained by the ground pressing the earth pressure wing 14 in the upper portion.

1 to 8c, the bolt 30 is embedded in the base 10, but if necessary, extends in a straight line to the lower portion of the base 10 so as to be engaged with the ground copper plate 40 and the bolt 30 By the lamppost and the ground copper plate 40 may be grounded.

All of the drawings in FIGS. 1 to 8C may be extracted and simply joined to implement a new streetlight foundation. It is within the scope of the present invention to implement a new streetlight basis by simply combining some of the contents described herein with each other.

According to the present invention as described above, by embedding the branch pipe formed integrally with the upper tube, the conduit, and the ground tube inside the concrete base, and attaching the tip-type ground copper plate to the lower part of the street lamp base, easy installation of street lamp poles, There is no need to do the construction separately, and the grounding copper tip can improve the grounding ability extremely, and by forming the earth pressure wing on the side of the lower part of the foundation, it can lower the height of the foundation corresponding to the same wind speed and the same streetlight height. It works.
In addition, according to the present invention, even if the ground subsides and the ground of the central part of the concrete base is recessed, there is an effect that the ground state is maintained by the ground pressing the ground copper plate surrounding the earth pressure wing from the top and side.

Claims (18)

In the street light base, With concrete foundation, It is embedded in the concrete foundation, the upper portion of the bolt protruding to the upper portion of the concrete foundation is fixed, A conduit tube embedded in the concrete foundation and inserted with electric wires; The earth pressure wing is formed to protrude to the side of the lower side of the concrete foundation, The ground pressure base, characterized in that the ground copper plate surrounding the earth pressure wing is attached. The method of claim 1, The bolt, streetlight foundation, characterized in that extending to the lower portion of the base and connected to the ground copper plate. The method according to claim 1 or 2, The ground copper plate, the surface is bent toward the bottom pointed, or the surface is cut and the tip formed by bending the cut surface toward the bottom, The lower edge portion of the concrete foundation is a street lamp foundation characterized in that the protrusion is formed projecting downward by a predetermined height, the tip or the pointed portion is not damaged during transportation or loading. delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete

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