KR200392021Y1 - Expantion and contraction type of lamppost - Google Patents

Abstract

The present invention is designed for a flexible street lamp that can be easily performed by lowering the top of the street lamp without using a ladder or aerial work equipment when repairing a luminaire installed on the top of the street lamp or attaching other attachments to the top of the street lamp. It is about. The present invention is a tubular support of the open top, one or more screws rotatably installed in the interior of the support, a drive unit installed on one side of the support to rotate the screw, and the inside of the support And at least one telescopic portion spirally coupled with a corresponding screw and lifted along the post by rotation of the screw.

Description

Flexible street lamps {Expantion and contraction type of lamppost}

The present invention relates to a street lamp, and more particularly to a flexible street lamp that can replace the lamp of the luminaire without the use of ladders or aerial work equipment or to attach other attachments on the top of the street lamp.

Street lamps generally consist of street lamps and luminaires attached to the top of street lamps. Street lamps have only a difference in shape, and have street lamps of a certain length and sufficient brightness so that luminaires are placed at a predetermined height from the ground. have.

 Street lamps of appropriate length and street lighting are used depending on the installation places such as highways, main roads of the city, commercial roads and residential roads, and the demand for street lamps continues to increase as the number of nighttime activities increases. The trend is increasing.

As street lamps are installed at predetermined heights from the ground by street lamps, the delay of work speed due to height work is a major factor in the maintenance cost of the street lamps. Exposed to Since the luminaire is installed in a high place, the most cost of maintenance was the increase in the maintenance cost due to the equipment cost used for the aerial work and the delay in the working speed due to the aerial work.

Republic of Korea Utility Model No. 20-0312448 discloses a street lamp having a luminaire lifting structure in order to solve the above problems, but this design is that only the lamp of the street lamp is used to be connected to the rope provided in the lifting device, The design was only applicable to a luminaire attached downward. Therefore, it was difficult to apply the lamp to a street lamp in which a plurality of lamps are installed or a lamp is attached to an upper part of a street lamp.

In addition, the street lamp may be used as a space for attaching various attachments as well as a luminaire. As an example of the use, a national flag is put on a street lamp installed on a side of the road on a national holiday to commemorate the national holiday. In the street lamps such as a shopping center, various promotional materials are produced in the form of a flag and used in the same manner as the flag.

As described above, in order to attach the attachments to the street lamp, the aerial work equipment must be used to climb to the top of the street lamp. In this case, various safety accidents may also occur due to the aerial work.

As described above, the street lamp with the luminaire lifting structure of the Korean Registered Utility Model No. 20-0312448, which was devised to solve the problems of the conventional street lamp, has a separate lifting device, so that the luminaire can be easily lowered to the ground for maintenance. Although the service life of actual luminaires is short, they can be used for months or years, and they cannot be used except when the luminaires are installed downward. Due to the problem that there is no choice but to use the frequency was not high.

Therefore, most street lights are made of only props and luminaires.

Therefore, the object of the present invention is to solve the problems of street lamps consisting only of props and luminaires, and street lamps equipped with a separate lifting device so that the luminaires can be lowered. Regardless of the shape and the number of installations, it is to provide a flexible street lamp that allows working on the ground without using aerial work equipment for maintenance of luminaires or by inserting flags or various promotional materials.

In order to achieve the above object, the present invention is a tubular pillar with an open top; A screw rotatably installed in the pillar to expand and contract the stretchable portion in a vertical direction; A driving unit installed at one side of the support and rotating the screw; It can be achieved by providing a stretchable street lamp column including a stretchable portion that is screwed with the screw inside the pillar, and is elevated in the pillar by the rotation of the screw.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The stretchable street lamp column 2 according to an embodiment of the present invention is inserted into the column 4 from the top of the column 4, and the top of the column 4, as shown in Figure 1a and 1b. It includes an elastic portion 7 to be. The strut 4 can be firmly installed on the ground by fixing the anchor bolt fixed to the ground by a nut through the through holes 6 formed in the lower portion. In addition, as shown in FIGS. 2A and 2B, a screw 12 is provided inside the strut 4 to stretch the stretchable portion 7 in the vertical direction. The screw 12 is rotatably supported inside the strut 4 by the bearing 5. A driving unit 18 including a bevel gear 20 and a handle 19 for rotating the screw 12 installed inside the support 4 is provided on one side of the support 4.

The expansion and contraction portion 7 is helically coupled with the screw 12 through the screwing portion 10 as shown in Figures 2a and 2b, when the screw 12 is rotated by the operation of the drive unit 18, The spiral is formed on the screw 12 to move up and down along the support post 4. At this time, the expansion and contraction portion 7 is prevented by the rotation prevention portion 21 consisting of the key 22 and the guide 23 as shown in Figures 2a and 2b. Therefore, the stretchable portion 7 can be raised and lowered in the support 4 because the screwed portion 10 moves along the spiral formed in the screw 12 when the screw 12 is rotated. On the other hand, the luminaire 3 is provided in the upper part of the elastic part 7.

Looking at the operation of one embodiment according to the present invention made of a configuration as described above, when lowering the stretchable portion (7) to install the maintenance or attachment of the street light (1), the driving portion (1) installed on one side of the support ( When the handle 19 of the 18 is rotated, the rotational force of the handle 19 is transmitted to the screw 12 through the bevel gears 20, and the screwing portion of the stretchable part 7 is rotated by the screw 12. 10) is lowered along the screw thread of the screw.

After the work is finished, the screw 12 is rotated in the opposite direction when the handle 19 of the driving unit 18 is lowered to raise the stretchable unit 7 of the stretchable street lamp column 2, and the posts are rotated. The stretchable and contracted portion 7 which has been inserted downward into the inside of (4) is lifted up.

When the elastic part 7 is elevated, the elastic part 7 is guided by the guide 23 formed inside the support 4 and the key 22 formed on the side of the elastic part 7. . Therefore, the stretchable portion 7 of the stretchable street lamp column 2 is elevated as described above by rotating the handle 19, so that work can be performed on the ground without preparing a ladder or aerial work equipment.

In addition, it is preferable that the stretchable portion 7 and the support 4 have overlapping portions of 20 cm to 50 cm so that the stretchable portion 7 and the support 4 can be firmly coupled to each other. A stopper 14 is provided at the end of the screw 12 for the purpose of preventing the expansion and contraction portion 7 from being raised above a certain height.

Flexible street lamp pole 2 according to another embodiment of the present invention is a tubular pillar (4) having an open top as shown in Figure 3, and the elastic portion is inserted into the pillar (4) from the top of the pillar (4) It includes (7). The strut 4 can be firmly installed on the ground by fixing the anchor bolt fixed to the ground by a nut through the through holes 6 formed in the lower portion. In addition, as shown in FIGS. 4A and 4B, a screw 12 for stretching the stretchable part 7 in the vertical direction is provided inside the support 4. The screw 12 is provided with a first screw 13 and a second screw 15, the first screw 13 being supported inside the support 4 by a bearing 5, and the second screw 15. ) Is screwed with the first screw 13 by the screwing portion (16).

The driving unit 18 is provided on one side of the support 4 including a bevel gear 20 and a handle 18 for rotating the screw 12 installed inside the support 4.

The stretchable portion 7 is provided with a first stretchable portion 8 and a second stretchable portion 9. The first elastic part 8 is provided to be inserted into the post 4, and the second elastic part 9 is provided to be inserted into the first elastic part 8. In addition, the second expansion and contraction portion 9 is screwed with the second screw 15 by the screwing portion 10, when the screw 13 is rotated by the operation of the drive unit 18, the second screw ( Held up and down along the shore by the helix. At this time, the expansion and contraction portion 7 is prevented from rotation by the rotation preventing means 21 consisting of the key 22 and the guide 23, as shown in Figures 4a and 4b, therefore, the first expansion and contraction portion 8 And the stretchable portion 7 composed of the second stretchable portion 9 and the screw portion 10 move along the helix formed on the second screw 15 when the screw 12 is rotated. Can be elevated in. On the other hand, the luminaire 3 is provided in the upper part of the 2nd expansion-and-contraction part 9.

Looking at the operation of another embodiment according to the present invention made of a configuration as described above, when lowering the stretchable portion (7) in order to install the maintenance or attachment of the street light (1), the driving portion (1) installed on one side of the support ( When the handle 19 of 18 is rotated, the rotational force of the handle 19 is transmitted to the first screw 13 through the bevel gear 20. At this time, the screw coupling portion 16 of the first screw 13 is screwed, and the second screw 15 screwed to the screw coupling portion 10 of the second expansion and contraction portion 9, each screw coupling portion It may or may not be rotated by the difference in frictional force of (10, 16). That is, if the screwing of the first screw 13 and the second screw 15 has a greater frictional force than the screwing of the second telescopic portion 9 and the second screw 15, the second screw 9 is made of the first screw. The first screw 13 is rotated together without being lowered along the screw surface of the first screw 13. At this time, the screw coupling portion 10 of the second elastic portion 9 is lowered along the screw surface of the second screw 15 by the rotation of the second screw 15, so that the second elastic portion 9 is Descends. On the contrary, if the screwing of the first screw 13 and the second screw 15 is less frictional than the screwing of the second telescopic portion 9 and the second screw 15, the second screw 15 is lowered. The first stretchable part 8 is lowered together with the second screw 15.

In this way, the first expansion and contraction portion 8 is caused by a difference in frictional force between the screw engagement portion 16 of the second screw 15 and the screw engagement portion 10 of the second expansion and contraction portion 9. And the second stretchable part 9 are selectively lowered.

After the work is finished, when the handle 19 of the drive unit 18 is turned in the opposite direction to the downward direction to raise the stretchable portion 7 of the stretchable street lamp 2, the first screw 13 is driven by the bevel gear 20. Is rotated, and the first stretchable portion (1) is caused by the difference in frictional force between the screwed portion 16 of the second screw 15 of the first screw 13 and the post-coupled portion 10 of the second stretchable portion 9. 8) and the second elastic part 9 are selectively raised.

When the first elastic part 8 and the second elastic part 9 are elevated, the first elastic part 8, the second elastic part 9, and the support 4 are guides 23 on the inner surface facing each other. 23a is provided, and keys 22 and 22a are provided below the outer surface. Therefore, the stretchable street lamp column 2 is lifted as described above without being rotated with the screw 12 when the stretched unit 7 is lifted by the screw 12 by operating the drive unit 18, ladder or aerial work equipment You can work on the ground without it.

In addition, the portion where the first stretchable portion 8 and the support 4 overlap and the portion where the first stretchable portion 8 and the second stretchable portion 9 overlap each other have a overlapping portion of 20 cm to 50 cm. Of the first screw 13 and the second screw 15 for the purpose of preventing the expansion and contraction portion 7 from being raised above a certain height in order to maintain the overlapping portion. At the ends, stoppers 14 and 17 are provided, respectively.

As described above, the anti-rotation tool 21 including the key 22 and the guide 23 prevents the stretchable street lamp 2 from being rotated together with the screw 12 so that the stretchable part 7 can be smoothly lifted and lowered. Since it is provided so as to, the cross section of the pillar 10 and the elastic portion 7 of the stretchable street light pole (2) can not be prevented that the elastic portion 7 is rotated when the screw 12 is rotated. Should be provided only in the case, if the shape of the cross-section of the support (10) and expansion and contraction portion 7 is a polygon (not shown). 12 is not rotated with the screw 12 even if the screw 12 is rotated, it is not necessary to provide a separate rotation prevention tool (21).

In the specification and drawings, the stretchable street lamp column 2 of the present invention is composed of one screw 12 and one expansion unit 7, two screws 13 and 15 and two expansion units 18 and 19. Although it has been described and illustrated by way of example for the purpose of illustration and description, two or more of each of the screw 12 and the stretchable portion 7 is provided according to the height of the street light (1). As can be, the present invention stretch street lamp 2 can be produced in three or more stages.

Flexible street lamps according to the present invention having the structure as described above can be easily lifted and stretched and the attachment and removal of the luminaire without the need for a separate ladder or expensive work equipment.

Therefore, work time can be shortened while reducing work delay due to aerial work and manpower used to transport various equipment.

In addition, in the prior art, the incidence of safety accidents that a worker falls while working on a high street lamp was high, but the stretchable street lamp according to the present invention does not work when the worker climbs up to the street lamp, but lowers the stretched part of the street lamp toward the ground so that the street lamp It is to perform the work of repairing and attaching or removing various attachments, it is possible to achieve an optimized working environment that can prevent safety accidents.

Figure 1a is a perspective view showing an extended state of the stretchable street lamp according to the present invention.

Figure 1b is a perspective view showing a contracted state of the stretchable street lamp according to the present invention.

FIG. 2A is a front view illustrating an extended state of the stretchable street lamp of FIG. 1A; FIG.

Figure 2b is a front sectional view showing a contracted state of the stretchable street lamp shown in Figure 1b.

Figure 3 is a perspective view showing an elongated state of the stretchable street lamp according to another embodiment of the present invention.

Figure 4a is a front sectional view showing the stretched state of the stretchable street lamp shown in FIG.

Figure 4b is a front sectional view showing a contracted state of the stretchable street lamp shown in FIG.

5 is a cross-sectional view taken along the line V-V shown in FIG.

FIG. 6 is a cross-sectional view of section VI-VI shown in FIG. 4A; FIG.

<Explanation of Signs for Main Parts of Drawing>

1: street light 2: stretch street light

3: luminaire 4: prop

5: bearing 6: through hole

7: Extension part 8: 1st extension part

9: 2nd expansion part 10: screw connection part

11: stopper 12: screw

13: first screw 14: stopper

15: second screw 16: screw connection

17: stopper 18: drive part

19: handle 20: bevel gear

21: rotation stopper 22: key

23: Guide

Claims (3)

In the street lamp column where the luminaire is installed, A tubular support which is fixed to the ground and whose top is open; A screw rotatably installed in the post; A drive unit installed on one side of the support to rotate the screw; A stretchable portion spirally coupled to the corresponding screw within the support, lifted along the support by rotation of the screw, and provided with a luminaire; The screw and the elastic portion is a stretchable street lamp, characterized in that a stopper is provided at each end to prevent the departure when the street lamp is fully extended. In the street lamp column where the luminaire is installed, A tubular support which is fixed to the ground and whose top is open; One or more screws rotatably installed in the shore and screwed together; A driving unit installed at one side of the post to rotate the screw provided at the lower side of the screws; At least one telescopic portion spirally coupled with the corresponding screw within the post and being elevated along the post by rotation of the screw; The innermost part of the expansion part is screwed to the outermost one of the screws and provided with a luminaire, The screw and the elastic portion is a stretchable street lamp, characterized in that a stopper is provided at each end to prevent the departure when the street lamp is fully extended. The stretchable street lamp according to claim 1 or 2, further comprising a rotation prevention device including a guide and a key therein so that the elastic part inserted into the support is not raised and lowered by the rotation of the screw.