JPS6346977Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) This invention relates to a telescoping lighting tower.

(Problems with the prior art) Telescoping lighting towers are widely used for nighttime lighting at civil engineering construction sites such as roads and rivers. Some are equipped with floodlights, while others are constructed using a multi-stage wire-wrapping type structure in which short columns are stacked one on top of the other so that they can expand and contract.

However, in conventional telescopic lighting towers where the floodlight is installed at the top end of a telescopic cylinder, the cylinder supports the weight of the floodlight, and the cylinder resists the wind force during strong winds, so it is necessary to increase the diameter of the cylinder. I needed to.

In that case, when reducing the size of the cylinder, the weight of the projector alone cannot lower the weight, and the need for piping equipment to install pressure supply ports at the upper and lower limits of the cylinder increases, as well as production costs associated with larger cylinders. It was impossible to avoid an increase in

In addition, in the case of multi-stage wire wrapping type, special consideration is not taken to ensure smooth sliding between each short column, which not only causes rattling and wobbling when expanding and contracting, but also causes long-term use. As a result, rust occurred on the sliding parts, and the wires protruded outward, which was not a desirable condition in terms of safety or aesthetics.

Furthermore, since the projector is usually fixedly attached to the upper end of a short column, there is a limit to the range in which the direction of the projector can be adjusted.

(Purpose of the invention) This invention was proposed to solve the above-mentioned conventional problems.It is lightweight, reduces production costs, can be folded extremely compactly, and can be used for many years. In addition, the telescoping column can be smoothly expanded and contracted, and the direction of the floodlight can be adjusted over a wide range, making maintenance work such as replacing the light bulb of the floodlight extremely easy and safe. The purpose is to provide a telescopic lighting tower.

Structure of the device This device consists of a plurality of short columns with different diameters, a short column with a small diameter is slidably inserted into a short column with a large diameter, and a telescopic cylinder is placed inside the short column. At the same time, a pressure supply port is provided only at the bottom end of this telescoping cylinder, and it is fixed to the foundation.The upper end is fixed to the top end of the short column with the smallest diameter, and the An inverted L-shaped bracket is provided, and a plurality of mounting brackets are provided at the lower end of the inverted L-shaped bracket so that the projector can be tilted up and down, and a plurality of projectors are installed on the mounting bracket so that the projector can be tilted up and down, and a shutter is installed between each of the short columns. The above object is achieved by providing the plate.

(Embodiment) Hereinafter, this invention will be described with reference to an illustrated embodiment. A telescoping lighting tower 1 is composed of a telescope-type support 2, a telescope-type cylinder 3, and a floodlight 4.

The telescope type support 2 includes a plurality of short pillars 4, 5, 6, and 7 each having a substantially rectangular cylindrical shape and having different diameters.
It is constructed by freely inserting a short pillar with a small diameter into a short pillar with a large diameter, and it is constructed by fixing the short pillar 4 with the largest diameter on the foundation 8. .

Also, the outer side of the lower end and the inner side of the upper end of the short pillars 5 and 6 at the inner middle part of the upper end of the short pillar 4 having the largest diameter, and the outer side of the lower end of the short pillar 7 having the smallest diameter. Shu plates 9, 9 made of MC nylon etc. are screwed to the parts, and the short columns 5, 6, 7
It is said that smooth sliding is possible. Further, a stopper 10 is screwed to the inner side of the upper end of the short columns 4, 5, 6, and this stopper 10 prevents the short columns 5, 6, 7 from coming off when the telescope type column 2 is fully extended. In addition, the required length of overlap between each of the short columns 5, 6, and 7 is ensured, and as a result, each of the short columns 5, 6, and 7 can be prevented from tilting, and the telescopic column 2 can be vertically erected. It is said that it is possible to attach.

The telescopic cylinder 3 is installed in the telescopic column 1, and its lower end is connected to the foundation 8.
The telescope type cylinder 3 is fixed to the base plate 11 of the telescope type cylinder 3, and its upper end is fixed to the upper end of the short column 7 having the smallest diameter. The scope type support 1 extends, and by removing the oil or air from the pressure supply port 16, the telescope type support 1 contracts under its own weight.

An inverted L-shaped bracket 12 is attached to the upper end of the short pole 7 having the smallest diameter, and a plurality of floodlights 4 are attached to the lower end of the vertical portion 12a of the inverted L-shaped bracket 12.
is installed.

Each light projector 4 is separately attached to the lower end of the vertical portion 12a of the inverted L-shaped bracket 12 via a mounting bracket 18.

The mounting bracket 18 is vertically movable around the mounting portion on the side of the inverted L-shaped bracket 12, and is mounted on the projector 4.
can be freely raised and lowered around the tip of the mounting bracket 18,
It is also said to be able to rotate left and right. As a result, it is possible to adjust the direction of the projector 4 over an extremely wide range.

Further, the inverted L-shaped bracket 12 has a function for attaching a captire cable 13. In addition, the code|symbol 14 in the figure is a cable reel,
Reference numeral 15 is an electric insect killer, and reference numeral 17 is a limit switch for raising the telescopic support 2.

(Effects of the invention) This invention consists of the above-mentioned structure.According to this invention, it goes without saying that it can be folded compactly, but the weight of the floodlight and the wind force in strong winds are all borne by the telescope type support, and the cylinder is Since the structure does not impose any burden on the tower, a relatively small cylinder that can be used to expand and contract the telescopic column can be used, which greatly reduces the weight of the entire lighting tower, making it extremely easy to handle. be. Furthermore, manufacturing costs can be reduced. In addition, a show plate is interposed between each short pillar of the telescope type support to ensure smooth sliding of each short pillar. Smooth expansion and contraction of the mold support is possible.

Further, the projector is provided with an inverted L-shaped bracket at the upper end of the short column having the smallest diameter, and is positioned below the upper end of the short column.

The mounting bracket for the floodlight is provided on the horizontal part of this inverted L-shaped bracket so that it can be raised and raised freely, so when the floodlight is installed in two stages (upper and lower), it can be mounted in opposite directions, allowing for a wide range of adjustment of the direction of the floodlight. Not only is this possible, but by conveniently turning the inverted L-shaped bracket upwards in the opposite direction to that described above, it is possible to achieve illumination over a very wide area, which can be set at an even higher position.

Also, when the telescoping support has shrunk,
By positioning the inverted L-shaped bracket below the upper end of the support column, the height of the projector can be further reduced, and various maintenance work such as replacing the light bulb of the projector can be performed at a safe low position.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the entire telescoping lighting tower;
Figure 2 is a front view showing the upper end of the retractable lighting tower, Figure 3 is an enlarged vertical cross-sectional view showing the retractable lighting tower in its folded state, and Figure 4 shows how the shrew plate and stopper are installed. It is a partially enlarged sectional view of the short column shown. 1...Extendable lighting tower, 2...Telescope type support,
3...Telescope type cylinder, 4...Floodlight,
5, 6, 7...Short column, 8...Foundation, 9...Show plate, 10...Stopper, 11...Base plate,
12... Inverted L-shaped bracket, 12a... Vertical part, 12
b...Horizontal part, 13...Captain cable,
14...Cable reel, 15...Electric insect killer, 16
...Pressure supply port, 17...Limit switch, 18...
Mounting hardware.

Claims (1)

[Scope of utility model registration request] A plurality of short columns with different diameters are installed by freely inserting a short column with a small diameter into a short column with a large diameter, and a telescope type cylinder is installed in the short column, and this telescope is installed. A pressure supply port is provided only at the bottom end of the mold cylinder, and it is fixed to the foundation.
Fix the upper end to the upper end of the short pillar with the smallest diameter,
An inverted L-shaped bracket is provided at the upper end of the short column, and a plurality of mounting fittings are provided at the lower end of the inverted L-shaped bracket so as to be able to be moved up and down, and a plurality of projectors are provided on the mounting fittings so that they can be moved up and down, and the above-mentioned A retractable lighting tower characterized by having a show plate between each short pillar.