JPH0554615U - Supports for lighting and signs - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a post of a sign used for a streetlight or a general road. The post of the streetlight or the sign is extendable to improve work efficiency and work safety. The purpose is to provide a strut that is intended. [Structure] In a pillar 10 for illumination and a sign, the pillar main body is divided into a plurality of nodes and is made extendable / contractible by an elevating mechanism, and an end of a drive introducing portion of the elevating mechanism is projected from a pillar base 15. This is due to the fact that this is surrounded by the surrounding body 16 so that it can be locked.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a post for a sign used for a streetlight or a general road, and more particularly, to a post that is vertically expandable and contractible.

[0002]

[Prior Art]

 Conventionally, in a street lamp, as shown in FIG. 5, a pillar 1 standing upright at a predetermined position and an illuminating device 3 provided on a support portion 2 at an upper end of the pillar 1 are provided. When the vehicle is to be replaced due to a malfunction, or when the lighting cover or signboard is dirty and needs to be cleaned, an operator rides in the wagon of an aerial work vehicle (not shown) to replace the fluorescent light or light. I was cleaning the cover or signboard.

[0003]

[Problems to be solved by the device]

 However, the above-described replacement work and cleaning work carried out by the aerial work vehicle have the drawbacks that the work is performed at a high place, the work efficiency is low, and there is a danger.

The present invention has been made in view of the above problems, and provides a strut for improving work efficiency and work safety by making the strut of the streetlight or the sign extendable. With the goal.

[0005]

[Means for Solving the Problems]

 The gist of the present invention to solve the above problems and achieve the above object is to provide a strut for lighting and marking, in which the strut body is divided into a plurality of nodes and is made extendable and retractable by an elevating mechanism. This lies in that the end of the drive introduction portion of the elevating mechanism is projected from the base and faced so that it can be locked by the surrounding body.

[0006]

[Action]

 Since the support columns are extendable and retractable, when the worker performs the lighting fixture replacement work or the cleaning work, the support posts can be shortened to a height about the height of the worker to perform the work. Also, the drive introduction part of the elevating mechanism is locked by the surrounding body, so that it is not possible for a third party to perform mischief such as the extension and contraction of the column.

[0007]

【Example】

 Next, the present invention will be described with reference to the drawings. FIG. 1 is a front view of a column according to the present invention, and FIGS. 2 to 3 are sectional views showing a main part of a lifting mechanism. In the figure, reference numeral 10 is a pillar, 11, 12, 13, and 14 are movable pillars of the pillar, 15 is a pillar base portion, and 16 is a surrounding body.

The pillar 10 according to the present invention is made to be extendable and contractible, and the specific extension / contraction mechanism thereof is shown in FIGS. 2 to 3.

As an example of a mechanism using a gear as shown in FIG. 2, the expansion and contraction mechanism of the support column 10 has an end 17 of the drive introduction portion protruding from the support column base 15. This has a bevel gear 18 fixed to the shaft. A bevel gear 19 is meshed with the bevel gear 18, and the bevel gear 19 is fixed to the shaft 20.

The shaft 20 is rotatably supported in the column base 15, and a worm 21 is provided on the upper part thereof. The rack 22 is vertically fixed to the inner wall of the column base 15.

In the movable column 11 inserted in the column base 15, a rack 23 meshed with the worm 21 is provided on the outer wall, and a gear 24 meshed with the rack 22 of the column base 15 is axially mounted. By the rotation of the gear 24, the rotation of the various gears is transmitted to rotate the worm 25.

A rack 26 is provided on the inner wall of the movable column 11 in the vertical direction. A rack 27 that meshes with the worm 25 of the movable column 11 is provided on the outer wall of the movable column 12.

According to the column 10 having such a lifting mechanism, in order to extend the column 10, for example, the operator unlocks the lock 16a (see FIG. 4) of the surrounding body 16 and appropriately drives it by a drive source. The axis of the end 17 of the introduction part is rotated. Then, the worm 21 rotates together with the shaft 20, and the rack 23 of the movable column 11 and the movable column 11 rise.

As the movable column 11 is raised, the gear 24 is rotated, whereby the worm 25 provided on the inner wall of the movable column 11 is rotated and the rack 27 and the movable column 12 are raised. With such a rotation transmission mechanism, the movable columns 11, 12, 13, and 14 are simultaneously raised. Further, if the shaft of the end portion 17 of the drive introducing portion is rotated in the opposite direction to the rotation in the case described above, the movable columns 11, 12, 13, 14 simultaneously descend.

Next, when the elevating mechanism is driven by the hydraulic drive shown in FIG. 3, an oil chamber 29 over the entire circumference between the inner wall of the column base 15a and the outer wall of the movable column 11a, and an oil chamber 30 having a similar relationship. The oil chamber 31 and the oil chambers 32, 33 and 34 below the cylinder head are filled with oil and sealed, and through holes 35, 36 and 37 are provided so as to communicate with each other. ing. The oil in each oil chamber is watertightly sealed.

With such a configuration, the operator unlocks the lock 16a (see FIG. 4) of the surrounding body 16 of the support column 10 and the oil feed pipe of the hydraulic device (not shown) carried near the support column 10. Is connected to the supply pipe 28 projecting from the column base 15. Then, when oil is pumped from the hydraulic device, the oil is supplied to the oil chamber 32, and the movable support column 11a rises.

Then, the oil in the oil chamber 29 flows into the oil chamber 33 through the through hole 35, and the movable support column 12 a rises. In this connection, the movable columns 11a, 12a (not shown, but the other movable columns 13a, 14a are also the same) rise simultaneously. On the contrary, when the oil is discharged from the oil chamber 32 from the supply pipe 28 to the hydraulic device, the movable support columns 11a and 12a simultaneously descend.

As described above, the structure in which the support column 10 can be expanded and contracted can be proposed, but the invention is not limited to the above-described embodiment, and a known lifting means such as a spring can be adopted.

Further, in the column 10 of the present invention, at the column bases 15 and 15a, the end portion 17 of the drive introduction portion is surrounded by the surrounding body 16, and the lock 16a is provided so that it can be further locked. This prevents outsiders from freely expanding and contracting the column 10. Of course, the surrounding body 16 and the lock 16a are not particularly limited in terms of material, shape or type.

[0020]

[Effect of the device]

 As described above, in the lighting and marking columns according to the present invention, the column body is divided into a plurality of nodes and is made to be extendable / contractible by the elevating mechanism. Since the end of this is projected and faced so that it can be locked by the surrounding body, there is no danger associated with working in high places, safety is secured, and working efficiency is improved. Moreover, since the lockable surrounding body is provided at the base of the pillar, only a specific person can perform the expansion and contraction action of the pillar, and the mischief of an outsider can be prevented. Further, since the pillar according to the present invention can be transported by being shortened, it is convenient and efficient to load and transfer it on a truck or the like, and it is also easy to install the pillar.

[Brief description of drawings]

FIG. 1 is a front view of a column according to the present invention.

FIG. 2 is a sectional view showing a main part of a lifting mechanism.

FIG. 3 is a cross-sectional view showing a main part of a lifting mechanism.

FIG. 4 is a perspective view of a surrounding body of a column base.

FIG. 5 is a front view of a column according to a conventional example.

[Explanation of symbols]

10 stanchions, 11, 12, 13, 14 stanchions movable stanchions, 15 stanchion bases, 16 enclosures, 17 end portions of drive introduction section.

Claims (1)

[Scope of utility model registration request] 1. In a strut for illumination and a sign, the strut body is divided into a plurality of nodes and is made extendable / contractible by an elevating mechanism, and an end of a drive introducing portion of the elevating mechanism is projected from a base of the strut. A pillar for lighting and a marker, which is characterized in that it is surrounded by a surrounding body so that it can be locked.