JP2022039008A - Pole - Google Patents

Abstract

To provide a pole that hardly corrodes, and whose diameter can be reduced.SOLUTION: A pole 1 comprises a cylindrical pole body 10 of which an outside surface 101 is fitted with a device 30 that produces heat. In the pole body 10, a ventilating hole 11 through which air in the pole body 10 goes in and out is formed above a position at which the device 30 is fitted.SELECTED DRAWING: Figure 3

Description

The present invention relates to a pole installed outdoors or the like.

Conventionally, as a pole for a street light or the like, in order to give the pole a plurality of functions, a pole for installing a street light in which a device such as a mobile phone base station or a radio is installed in the internal space of the pole body is disclosed ( For example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2018-195501

Since poles such as street lights are usually installed outdoors, moisture tends to accumulate inside the poles, and the poles tend to be corroded by the humidity. Further, as the number of functions of the pole increases, the pole tends to become large, and it is required to reduce the diameter of the pole from the viewpoints of cost reduction of the pole, saving of resources used, and ease of installation.

Therefore, an object of the present invention is to provide a pole that is not easily corroded and can be reduced in diameter.

The pole according to one aspect of the present invention includes a cylindrical pole body to which a device that generates heat is attached to an outer surface, and the pole body has an inside of the pole body above a position where the device is attached. Vents for air to enter and exit are formed.

The pole according to the present invention is not easily corroded and can be reduced in diameter.

FIG. 1 is a front view showing a schematic configuration of a pole according to an embodiment. FIG. 2 is a cross-sectional view of the pole according to the embodiment at the position shown by line II-II in FIG. FIG. 3 is a cross-sectional view of the pole according to the embodiment at the position shown by line III-III in FIG. FIG. 4 is a cross-sectional view showing a schematic configuration of a pole according to a modified example of the embodiment.

Hereinafter, embodiments will be specifically described with reference to the drawings. It should be noted that all of the embodiments described below show comprehensive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps, the order of steps, etc. shown in the following embodiments are examples, and are not intended to limit the present invention.

Further, in the present specification, terms indicating relationships between elements such as parallel, terms indicating the shape of elements such as rectangles, and numerical ranges are not expressions that express only strict meanings, but substantially. It is an expression meaning that an equivalent range, for example, a difference of about several percent is included.

Further, each figure is a schematic diagram in which emphasis, omission, or ratio is adjusted as appropriate to show the present invention, and is not necessarily exactly illustrated, and is different from the actual shape, positional relationship, and ratio. In some cases.

(Embodiment)
Hereinafter, the pole according to the present embodiment will be described.

First, the configuration of the pole according to the present embodiment will be described with reference to FIGS. 1 to 3.

FIG. 1 is a front view showing a schematic configuration of a pole 1 according to the present embodiment. FIG. 2 is a cross-sectional view of pole 1 at the position indicated by line II-II in FIG. FIG. 3 is a cross-sectional view of pole 1 at the position shown by line III-III in FIG.

As shown in FIGS. 1 to 3, the pole 1 according to the present embodiment includes a pole main body 10, a mounting member 20, a device 30, and a lamp 50. In the present embodiment, the pole 1 is an outdoor lamp such as a street lamp provided with a lamp 50. The pole 1 is installed in an outdoor space such as a road, a park, a parking lot, a coast, a riverbank, a forest road, an apartment house premises, or a factory premises.

The pole body 10 is a cylindrical pillar body that stands substantially vertically from the ground 70. An internal space 15 is formed in the tubular pole body 10. The cross-sectional shape of the outer circumference of the pole body 10 is circular in the example shown in FIG. The cross-sectional shape of the outer circumference of the pole body 10 is not particularly limited, and may be a polygon such as a rectangle or an ellipse. Further, the width (thickness) of the pole body 10 may be constant in the height direction or may be different in the height direction. When the width of the pole main body 10 is different in the height direction, the width of the pole main body 10 is different between, for example, the upper end portion and the lower end portion of the pole main body 10. When the width of the pole body 10 is different between the upper end and the lower end of the pole body 10, for example, the width of the upper end is smaller than the width of the lower end. Further, when the width of the pole main body 10 is different between the upper end portion and the lower end portion of the pole main body 10, the pole main body 10 may have a tapered shape or a stepped shape. The height of the pole body 10 from the ground 70 is, for example, 3 m or more and 12 m or less. The width of the lower end of the pole body 10 is, for example, 80 mm or more and 200 mm or less.

The lower end of the pole body 10 is open, and the lower end of the pole body 10 is buried by being stuck in the ground 70. As a result, the pole body 10 is fixed to the ground 70. Further, the upper end of the pole body 10 is not open, and the structure is such that water such as rain does not enter the internal space 15. That is, the pole body 10 has a bottomed cylinder shape in which the upper end side of the pole body 10 is the bottom surface. Further, the pole body 10 is made of metal, for example. In the present embodiment, even if the metal pole body 10 is easily corroded by moisture, the moisture in the internal space 15 is efficiently discharged to the outside as described later, so that the pole body 10 is corroded. Hard to occur.

A device 30 that generates heat is attached to the outer surface 101 of the pole body 10. Specifically, a device 30 that generates heat is attached to the outer surface 101 of the pole body 10 via the attachment member 20.

The pole body 10 is formed with a ventilation hole 11 above which the device 30 is attached to allow air to enter and exit inside the pole body 10 (internal space 15). The ventilation hole 11 and the ventilation hole 12 connect the internal space 15 and the outside air. The ventilation hole 11 is formed at a position at a distance of, for example, one-third or less of the height of the pole body 10 from the upper end of the pole body 10. Further, the pole body 10 is formed with a ventilation hole 12 below the position where the ventilation hole 11 and the device 30 are attached. The ventilation hole 12 is formed at a position of the pole body 10 that is not in contact with the housing 22, and in the illustrated example, is formed on the side opposite to the housing 22 side of the pole body 10.

The ventilation holes 11 and the ventilation holes 12 are holes formed so as to penetrate the internal space 15 from the outside of the pole body 10. The ventilation holes 11 and 12 are holes different from minute holes such as screw holes through which air does not substantially enter and exit. The ventilation holes 11 and 12 are open to the outer surface (specifically, the outer surface 101) of the pole body 10. The opening shape of each of the ventilation holes 11 and the ventilation holes 12 is not particularly limited, and is, for example, a polygon such as a rectangle, a circle, an ellipse, or a semicircle. Further, the number of the ventilation holes 11 and the number of the ventilation holes 12 may be one or a plurality, respectively. The positions of the ventilation holes 11 and the ventilation holes 12 in the circumferential direction of the pole body 10 are not particularly limited as long as they can generate the air flow described later. Further, when a plurality of ventilation holes 11 and 12 are formed, the arrangement of the plurality of ventilation holes 11 and the ventilation holes 12 is not particularly limited. The plurality of ventilation holes 11 and 12 may be arranged in the vertical direction (vertical direction) of the pole body 10 or in the circumferential direction of the pole body 10, and are arranged in a matrix. May be good. The opening areas of the ventilation holes 11 and the ventilation holes 12 are not particularly limited as long as they are large enough to generate an air flow, which will be described in detail later. From the viewpoint of the insertion of the cable 35 and the amount of ventilation described later, the width of the openings of the ventilation holes 11 and the ventilation holes 12 is, for example, 2 mm or more at the narrowest portion. The ventilation hole 12 may be located above the device 30. Further, if air can enter the internal space 15 from a place other than the ventilation hole 12 such as the opening at the lower end of the pole body 10, the pole body 10 may not be provided with the ventilation hole 12.

For example, a cable 35 connected to the device 30 is inserted into the ventilation hole 11. The cable 35 is, for example, a cable connected to a power line (not shown) provided on an external utility pole for supplying electric power to the device 30 or the like. Further, the cable 35 may be a cable for communication of the device 30 such as an optical fiber. The cable 35 penetrates the pole body 10 and the housing 22 and is connected to the device 30. By inserting the cable 35 into the ventilation hole 11, it is not necessary to form another hole or the like for inserting the cable 35, and the pole 1 can be easily installed. Further, although not shown, the cable 35 branches in the middle, is connected to the lamp 50, and supplies electric power to the lamp 50, for example. The cable 35 for supplying electric power to the device 30 does not have to be inserted into the ventilation hole 11. For example, the cable 35 passes through the internal space 15 from the lower end of the pole body 10 to the electric power line in the ground. It may be connected. Further, the cable 35 does not branch, and the lamp 50 may be supplied with electric power other than the cable 35.

Further, the pole body 10 is provided with a rain avoidance cover 40 so as to cover the outer side and the upper side of the vent hole 11 and the pole body 10 of the vent hole 12.

The mounting member 20 is a frame for mounting the device 30 on the outer surface 101 of the pole body 10. By fixing the device 30 to the mounting member 20, the device 30 is mounted to the pole body 10 via the mounting member 20. The mounting member 20 is an example of heat transfer means for transferring heat from the device 30 to the pole body 10. In the heat transfer by the mounting member 20, the heat of the device 30 is transferred to the pole body 10 by heat conduction through the mounting member 20.

The mounting member 20 has a fixing band 21 and a housing 22.

The fixing band 21 is a member for fixing the housing 22 to the pole body 10. The fixing band 21 is a plate-shaped member having a shape along the outer surface 101 of the pole body 10 and the outer surface 221 on the pole body 10 side of the housing 22, and is in contact with the outer surface 101 and the outer surface 221. The fixing band 21 and the housing 22 are fixed by bolts, welding, or the like. The pole body 10 is sandwiched between the fixed band 21 and the housing 22. The fixing band 21 may be fixed to the pole body 10 with a bolt or the like. The fixing band 21 is made of metal, for example.

The housing 22 is a container in which the device 30 is housed. The shape of the housing 22 is, for example, a rectangular parallelepiped shape, but may be another shape such as a columnar shape or a polygonal columnar shape. The housing 22 includes a flat plate portion 23 constituting the pole body 10 side of the housing 22. The device 30 is fixed to the flat plate portion 23. The flat plate portion 23 is sandwiched between the device 30 and the pole body 10, and is in contact with the device 30 and the pole body 10.

The housing 22 is made of metal, for example. Further, in the housing 22, the flat plate portion 23 may be made of metal, and the portion other than the flat plate portion 23 may be formed of a material other than metal such as resin. Although not shown, the housing 22 may be formed with a ventilation hole through which air in the internal space of the housing 22 enters and exits. Further, at least a part of the surface of the housing 22 may be open.

The housing 22 is fixed to the pole body 10 by a fixing band 21. The housing 22 is in contact with the outer surface 101 on the lower end side of the pole body 10. Specifically, the flat plate portion 23 of the housing 22 is in contact with the outer surface 101 of the pole body 10. As a result, the heat of the device 30 is conducted through the flat plate portion 23 of the housing 22 and transferred to the pole body 10. Further, the housing 22 is arranged in contact with the ground 70. The housing 22 does not have to be in contact with the ground 70, and may be fixed to the pole body 10 so as to be arranged away from the ground 70. Further, the housing 22 may be fixed in any way as long as it is fixed so as to be in contact with the pole body 10, or may be fixed to the pole body 10 by a member other than the fixing band 21. Further, the housing 22 may be welded to the pole body 10.

The housing 22 is provided with a door 24, for example, on the side of the housing 22 opposite to the pole body 10 side. A worker or the like opens the door 24 to install, maintain, and inspect the device 30.

The device 30 does not have to be housed in a container such as the housing 22, and for example, the mounting member 20 is configured to include a member consisting of only a flat plate portion 23 in the housing 22 and a fixing band 21. You may.

The device 30 is a device that generates heat during operation. The device 30 is, for example, an electronic device having a power semiconductor. The power semiconductor is, for example, a power transistor used in a power amplifier, a power supply circuit, or the like of an electronic device. As described above, since the device 30 is an electronic device having a power semiconductor, the pole 1 can be made multifunctional, and the heat generated during the operation of the power semiconductor can discharge the moisture accumulated in the internal space 15 as described later.

The electronic device is, for example, a communication wireless device such as a mobile phone base station or a wireless LAN access point. As described above, since the electronic device is a communication wireless device that is normally supplied with electric power at all times and operates, the heat generated by the operation of the power semiconductor used for the transmission power amplifier and the power supply circuit of the communication wireless device is steady. Occurs. Further, although not shown, when the device 30 (electronic device) is a communication wireless device, an antenna connected to the communication wireless device may be attached to the upper end side of the pole body 10. That is, the pole 1 may be used for fixing the antenna for the communication wireless device. The electronic device is not limited to the communication wireless device, and may be, for example, another electronic device such as a power supply device.

The device 30 is housed inside the housing 22 of the mounting member 20. The device 30 is fixed to the flat plate portion 23 of the housing 22 of the mounting member 20, specifically, the mounting member 20, and is in contact with the flat plate portion 23. The method of fixing the device 30 to the flat plate portion 23 is not particularly limited. For example, the device 30 may be fixed to the flat plate portion 23 with screws or the like, and the flat plate portion 23 is provided with a recess for fixing the device 30. May be. In this way, the device 30 is attached to the pole body 10 via the attachment member 20. The device 30 is attached, for example, at a position of one-third or less of the height of the pole body 10. The width of the device 30 when viewed from the direction in which the device 30 is attached to the pole body 10 is, for example, larger than the width of the pole body 10.

The number of devices 30 may be one or a plurality.

The lamp 50 is supported by the pole body 10. The lamp 50 is attached to, for example, the upper end of the pole body 10. The lamp 50 includes, for example, a light source 51 such as a light emitting module on which a light emitting element such as an LED is mounted, and a resin translucent cover 52 that transmits light from the light source 51 and diffuses light from the light source 51. Have. The lamp 50 is not limited to such a configuration, and may be any lamp used for a general street lamp. As described above, the pole 1 can be used as an outdoor lamp such as a street lamp by providing the lamp 50.

Next, an example of the air flow in the pole 1 according to the present embodiment will be described with reference to FIG. In FIG. 3, the flow of air when the device 30 is generating heat is indicated by an arrow.

When power is supplied to the device 30, the device 30 generates heat. Since the device 30 is attached to the outer surface 101 of the pole body 10 via the mounting member 20, the heat of the device 30 is transferred to the pole body 10 by heat conduction via the mounting member 20. Specifically, the heat of the device 30 first moves to the flat plate portion 23 and the fixed band 21 of the housing 22, and is transferred from the flat plate portion 23 and the fixed band 21 to the pole body 10. Then, the heat transferred to the pole body 10 warms the air in the internal space 15 near the position where the device 30 is attached and the density becomes light, so that convection of air occurs in the internal space 15. Therefore, in the internal space 15, the warmed air rises and is discharged to the outside from the ventilation hole 11, and the outside air is drawn into the internal space 15 from the ventilation hole 12. As a result, since the pole 1 is installed in the outdoor space, moisture tends to accumulate in the internal space 15 of the pole main body 10, but the air in the internal space 15 including moisture rises and is discharged to the outside, and the outside air is released. It is drawn into the internal space 15. Therefore, since the moisture in the internal space 15 is discharged, the pole body 10 is suppressed from being corroded by the moisture. Further, the heat of the device 30 is transferred to the pole body 10, so that the device 30 can be cooled.

In addition, since moisture tends to accumulate under the internal space 15, the device 30 can be attached near the lower end of the pole body 10 (for example, at a position less than one-third of the height of the pole body 10) to obtain moisture. The air containing a large amount of air is warmed and rises, and is discharged from the ventilation hole 11. Therefore, the moisture in the internal space 15 can be discharged more efficiently, and the corrosion of the pole body 10 can be suppressed.

Further, the device 30 is attached to the outer surface 101 of the pole body 10. As a result, as described above, the device 30 is not installed inside the pole body 10 even if the device 30 is attached because the moisture in the internal space 15 is discharged by the heat of the device 30, so that the pole body 10 is used. It is possible to reduce the diameter. Further, even when the device 30 is enlarged or multi-functionalized in order to increase the function of the pole 1 or to increase the number of functions, the thickness of the pole body 10 is affected by the size of the device 30. Since it does not receive it, the diameter of the pole body 10 can be reduced.

As described above, the pole 1 includes a cylindrical pole body 10 to which the device 30 is attached to the outer surface 101, and the pole body 10 is formed with a ventilation hole 11 above the position where the device 30 is attached. .. As a result, as described above, the device 30 is attached to the outer surface 101, and the heat generated by the device 30 causes the moisture in the internal space 15 of the pole body 10 to be discharged from the ventilation holes 11, so that the pole 1 is corroded. It is difficult to do and the diameter can be reduced.

[Modification example]
Hereinafter, a modified example of the embodiment will be described. In the following description of the modified example of the embodiment, the differences from the embodiment will be mainly described, and the description of the common points will be omitted or simplified.

First, the configuration of the pole according to this modification will be described with reference to FIG. FIG. 4 is a cross-sectional view showing a schematic configuration of a pole 1a according to a modified example of the embodiment. As shown in FIG. 4, the pole 1a includes a mounting member 20a having a pole body 10a and a housing 22a instead of the mounting member 20 having the pole body 10 and the housing 22 in the pole 1 according to the embodiment. ..

The pole body 10a is a cylindrical pillar like the pole body 10, and instead of forming the ventilation holes 12 of the pole body 10, the ventilation holes 13 through which the air warmed by the heat of the device 30 passes are formed. Has a structure that is Specifically, the pole body 10a is formed with the ventilation holes 13 below the positions where the ventilation holes 11 and the equipment 30 are attached. The ventilation hole 13 is an example of heat transfer means for transferring heat from the device 30 to the pole body 10a. In the heat transfer through the ventilation holes 13, the air warmed by the heat of the equipment 30 enters the internal space 15a of the pole body 10a through the ventilation holes 13, so that the heat of the equipment 30 is transferred to the pole body 10a.

The ventilation hole 13 is a hole formed so as to penetrate the internal space 15a from the outside of the pole body 10a. The ventilation hole 13 is a hole different from a minute hole such as a screw hole through which air does not substantially enter and exit. The ventilation holes 13 are open to the outer surface (specifically, the outer surface 101a) of the pole body 10a. The ventilation hole 13 is formed at a position facing the housing 22a on the pole body 10a, that is, at a position where the pole body 10a and the housing 22a on the pole body 10a are in contact with each other. The ventilation hole 13 is located below the position where the device 30 is attached. Further, the ventilation hole 13 is connected to the internal space 28 of the housing 22a via the ventilation hole 25 described later. That is, the internal space 15a of the pole body 10a and the internal space 28 of the housing 22a are connected to each other via the ventilation holes 13 and the ventilation holes 25. The ventilation hole 13 may be located above the position where the device 30 is attached, as long as the internal space 15a and the internal space 28 can be connected by adjusting the position of the ventilation hole 25 or the like.

The opening shape of the ventilation hole 13 is not particularly limited, and is, for example, a polygon such as a rectangle, a circle, an ellipse, or a semicircle. Further, the number of the ventilation holes 13 may be one or a plurality. When a plurality of ventilation holes 13 are formed, the plurality of ventilation holes 13 are arranged, for example, in the vertical direction in which the pole body 10a is erected. Further, the plurality of ventilation holes 13 may be formed so as to sandwich the position where the device 30 is attached. The opening area of the ventilation hole 13 is not particularly limited as long as it is large enough to generate an air flow described in detail later.

For example, a cable 35 connected to the device 30 is inserted into the ventilation hole 13. The cable 35 is also inserted into the ventilation hole 25 described later. In this modification, the cable 35 is connected to an underground power line (not shown) or the like. The cable 35 may be connected to the device 30 through the pole body 10a and the housing 22a, as in the embodiment. Further, the cable 35 may be inserted into the ventilation hole 11 and connected to a power line or the like provided on an external utility pole, as in the embodiment.

The mounting member 20a is a frame for mounting the device 30 on the outer surface 101a of the pole body 10a, similarly to the mounting member 20. The mounting member 20a has a fixing band 21 and a housing 22a.

The housing 22a is a container in which the device 30 is housed. The housing 22a has a structure in which the ventilation holes 25 and the ventilation holes 26 are formed in the same container as the housing 22. The housing 22a is fixed to the pole body 10a by the fixing band 21. The housing 22a is in contact with the outer surface 101a on the lower end side of the pole body 10a. The housing 22a includes a flat plate portion 23a constituting the pole body 10a side of the housing 22a. The device 30 is fixed to the flat plate portion 23a. The flat plate portion 23a of the housing 22a is in contact with the outer surface 101a of the pole body 10a.

The ventilation hole 25 is formed on the pole body 10a side of the housing 22a, that is, on the flat plate portion 23a, and is a hole penetrating the flat plate portion 23a. Further, the ventilation hole 25 is located below the position where the device 30 is attached. The ventilation hole 25 overlaps with the ventilation hole 13 and is connected to the ventilation hole 13 when viewed in the direction through which the ventilation hole 25 penetrates.

The ventilation hole 26 is formed on the side of the housing 22a opposite to the pole body 10a. That is, the ventilation hole 26 is formed so as to open in the surface of the housing 22a facing the flat plate portion 23a (that is, the surface opposite to the flat plate portion 23a side of the device 30). The ventilation hole 26 is a hole formed so as to penetrate the internal space 28 from the outside of the housing 22a. The ventilation hole 26 may be formed so as to open on any surface of the housing 22a as long as the outside air can enter the housing 22a. For example, the ventilation hole 26 may be formed so as to open on a surface of the housing 22a that intersects with the flat plate portion 23a. Further, the ventilation holes 26 may be formed so as to open on a plurality of surfaces of the housing 22a.

The ventilation hole 26 is located above, for example, a position where the device 30 is attached. The ventilation hole 26 and the ventilation hole 25 (the ventilation hole 13 arranged so as to be connected to the ventilation hole 25) are arranged so as to sandwich at least a part of the device 30, for example. As a result, the air entering from the ventilation hole 26 flows along the device 30, passes through the ventilation hole 25 and the ventilation hole 13, and enters the internal space 15a. The ventilation hole 26 is located below the device 30, and the ventilation hole 13 and the ventilation hole 25 are located above the device 30 so that the ventilation hole 26 and the ventilation hole 25 (the ventilation hole 25 are connected to each other) are arranged. The ventilation holes 13) may be arranged so as to sandwich the device 30. Further, a plurality of ventilation holes 26 may be provided along the device 30.

The ventilation holes 25 and the ventilation holes 26 are holes different from minute holes such as screw holes through which air does not substantially enter and exit. The ventilation holes 25 and the ventilation holes 26 are open to the outer surface of the housing 22a. The opening shape of the ventilation hole 25 and the ventilation hole 26 is not particularly limited, and is, for example, a polygon such as a rectangle, a circle, an ellipse, or a semicircle. Further, the number of the ventilation holes 25 and the number of the ventilation holes 26 may be one or a plurality, respectively. The opening areas of the ventilation holes 25 and the ventilation holes 26 are not particularly limited as long as they are large enough to generate an air flow, which will be described in detail later.

Further, the housing 22a is provided with a rain avoidance cover 40 so as to cover the outer side and the upper side of the ventilation hole 26 in the housing 22a.

Next, an example of the air flow in the pole 1a according to this modification will be described with reference to FIG. In FIG. 4, the flow of air when the device 30 is generating heat is indicated by an arrow.

When power is supplied to the device 30, the device 30 generates heat. Since the device 30 is attached to the pole body 10a via the mounting member 20a on the outer surface 101a as in the embodiment, the heat of the device 30 is transferred to the mounting member 20a (specifically, the mounting member 20a). Heat conduction through) is transmitted to the pole body 10a. Further, the heat of the device 30 is also transferred to the pole by expanding the air in the internal space 28 heated by the heat of the device 30 and entering the internal space 15a of the pole body 10a through the ventilation holes 25 and the ventilation holes 13. It is transmitted to the main body 10a. As a result, the air in the internal space 15a of the pole body 10a near the position where the device 30 is attached is warmed and the density becomes light, so that convection of air occurs in the internal space 15a. In the internal space 15a, the warmed air rises and is discharged to the outside from the ventilation hole 11, and the air in the internal space 28 is drawn into the internal space 15a through the ventilation hole 25 and the ventilation hole 13. Further, at the same time, the outside air is drawn into the internal space 28 from the ventilation hole 26. As a result, the moisture accumulated in the internal space 15a is released to the outside as in the embodiment. Therefore, it is possible to prevent the pole body 10a from being corroded by moisture.

As described above, in the pole 1a, the heat of the device 30 is transferred to the pole body 10a even when the air warmed in the internal space 28 of the housing 22a flows into the internal space 15a of the pole body 10a, so that the efficiency is high. Heat is transferred to the pole body 10a. In the internal space 28, air flows from the ventilation hole 26 toward the ventilation hole 25. In this case, the ventilation hole 26 and the ventilation hole 25 (the ventilation hole 13 arranged so as to be connected to the ventilation hole 25) are arranged so as to sandwich the device 30, so that the device 30 is arranged in the internal space 28. Since the air flow is generated along the above, the heat of the device 30 is transferred more efficiently. Therefore, a flow path for heating air is formed in the housing 22a provided on the outside of the pole body 10a, and the air warmed by the flow path flows into the internal space 15a, so that the diameter of the pole body 10a is reduced while reducing the diameter. Moisture accumulated in the internal space 15a can be efficiently discharged. Further, the outside air taken in from the ventilation hole 26 flows along the device 30 in the internal space 28, so that the device 30 is efficiently cooled.

The air flow in the pole 1a is not limited to the example described above. An air flow different from the above example may be generated depending on the temperature of the internal space 15a and the internal space 28, the calorific value of the device 30, the positional relationship of each component, the size of each component, and the like. ..

For example, an updraft may occur in the internal space 28 depending on the balance of the amount of air flow through the ventilation holes 26, the ventilation holes 25, and the ventilation holes 13, and the state of heat transfer of the device 30. In this case, the air in the internal space 28 is discharged from the ventilation hole 26, and the air in the internal space 15a is drawn into the internal space 28 through the ventilation hole 25 and the ventilation hole 13. At the same time, the outside air is drawn into the internal space 15a from the ventilation hole 11. That is, an air flow opposite to the arrow shown in FIG. 4 can occur. Also in this case, the outside air is drawn into the internal space 15a, and the air in the internal space 15a containing moisture is discharged to the outside through the ventilation holes 25, the ventilation holes 13, and the ventilation holes 26. Therefore, it is possible to prevent the pole body 10a from being corroded by moisture.

(Other embodiments)
Although the embodiments and the modifications of the embodiments have been described above, the present invention is not limited to the embodiments and the modifications of the embodiments.

In the above embodiment, the poles 1 and 1a are provided with the lamp 50, but the present invention is not limited to this. The poles 1 and 1a may not be provided with the lamp 50, and may be, for example, poles for supporting a signboard, a sign, an antenna, a flag, or the like.

Further, in the above embodiment, the ventilation holes 11 are formed so as to open to the outer surfaces 101 and 101a of the pole bodies 10 and 10a, but the present invention is not limited to this. For example, the ventilation holes 11 may be formed so that the upper ends of the pole bodies 10 and 10a are open. In this case, the upper ends of the pole bodies 10 and 10a may be completely open, or a part of the upper end surfaces of the pole bodies 10 and 10a may be open. Further, in this case, a rain avoidance cover may be provided to cover the upper ends of the pole bodies 10 and 10a from above.

Further, in the above embodiment, the device 30 is an electronic device, but the device 30 is not limited to this. The device 30 may be a device that generates heat, such as a heater.

Further, in the above embodiment, the device 30 is housed in the housings 22 and 22a, but the device 30 is not limited to this. For example, the device 30 may be fixed and attached so that the device 30 is in direct contact with the pole bodies 10 and 10a by a member that fixes the device 30 such as the fixing band 21 to the pole bodies 10 and 10a. Further, in this case, in order to protect the device 30, the fixed band 21, the device 30, and the portion of the pole main body 10 and 10a to which the device 30 is attached may be surrounded by a housing or the like. Further, it may be fixed to the pole main body 10 or 10a by a member other than the fixing band 21.

Further, in the above embodiment, the poles 1 and 1a may further include a fan for discharging the air in the internal spaces 15 and 15a from the ventilation holes 11.

Further, in the above embodiment, the lower ends of the pole bodies 10 and 10a are buried in the ground 70, but the present invention is not limited to this. A plate-shaped anchor plate larger than the cross section of the pole bodies 10 and 10a may be provided at the lower ends of the pole bodies 10 and 10a, and the anchor plates may be fixed with anchor bolts.

Further, in the above embodiment, the cable 35 passes through the internal spaces 15 and 15a and is connected to the device 30, but the present invention is not limited to this. The cable 35 may be connected to the device 30 by penetrating the housings 22 and 22a without passing through the internal spaces 15 and 15a.

In addition, a form obtained by applying various modifications to each embodiment and modification that a person skilled in the art can think of, or any combination of components and functions in each embodiment without departing from the spirit of the present invention. The embodiment realized by the above is also included in the present invention.

1, 1a Pole 10, 10a Pole body 11, 12, 13, 25, 26 Vents 20, 20a Mounting member 30 Equipment 35 Cable 50 Lighting equipment 101, 101a, 221 Outer side surface

Claims (8)

Equipped with a cylindrical pole body to which heat-generating equipment can be attached to the outer surface,
The pole body is formed with a vent hole for air to enter and exit inside the pole body above the position where the device is attached.
Pole. Further provided with heat transfer means for transferring heat from the device to the pole body.
The pole according to claim 1. A cable connected to the device is inserted through the ventilation hole.
The pole according to claim 1 or 2. The device is an electronic device having a power semiconductor.
The pole according to any one of claims 1 to 3. The electronic device is a communication wireless device.
The pole according to claim 4. The pole body is made of metal.
The pole according to any one of claims 1 to 5. Further equipped with the above-mentioned equipment,
The pole according to any one of claims 1 to 6. Further provided with a lamp supported by the pole body,
The pole according to any one of claims 1 to 7.

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