JPH0124810Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a concrete outdoor light pole for attaching a low voltage electric light of about 100V installed in a park or the like.

[Conventional technology]

Conventional concrete outdoor light poles are solid throughout their entire length, so it is not possible to incorporate a ballast inside the column, which poses the problem that they can only be applied to low-wattage outdoor lights that have a ballast built into the light fixture. Ta.

Therefore, most of the outdoor light poles installed in parks were made of steel pipes that could accommodate ballasts inside.

[Problem that the invention attempts to solve]

However, those made of steel pipes are not only expensive, but also have the problem of rusting and poor appearance.

This invention solves these problems,
To provide an outdoor light pole in which a ballast and other electrical equipment can be built into the column body of the outdoor light pole.

[Means for solving problems]

In order to achieve the above object, the outdoor light pole of the present invention has the same overall length as the long upper hollow concrete pole 1, which has a tapered upper part 1b and a straight lower end part 1a with the same diameter for height adjustment. A steel pipe 5 with approximately the same length as the lower hollow concrete columns 3 with a relatively short diameter and a large longitudinal opening 5a between the lower hollow concrete columns 3 whose lower portions are buried underground.
The upper and lower ends 6, 7 of the upper and lower concrete columns 1, 3 are fitted to the inner peripheral surfaces of the upper and lower ends of the steel pipe 5, and the inside of the steel pipe 5 is used as a storage area for ballasts and other electrical equipment, and an opening 5a is provided. is located in the middle of the steel pipe 5, and an opening/closing door 8 is provided at the opening 5a.

[Effect]

A steel pipe 5 having approximately the same length as the lower hollow concrete column 3 and having an elongated opening 5a is connected to the upper hollow concrete column 1 having a tapered upper part and the same diameter at the lower part, and a relatively short overall length having the same diameter. Since it is placed between the lower hollow concrete pillars 3 whose lower parts are buried underground, the opening 5a is located in a position where it is easy to work from the ground, and the ballast and other electrical equipment can be inserted into the opening 5a, making it easy to install and remove. work can be done easily. In addition, by adjusting the insertion distance of the linear same-diameter portion 1a formed at the lower end of the upper hollow concrete pillar 3 into the steel pipe 5, the outside light pole can be adjusted to an appropriate height according to the location conditions in the park. be able to.

〔Example〕

Below, the drawings showing the embodiments of the present invention will be explained. 1 is a long upper hollow concrete column;
This upper concrete column 1 consists of a short linear portion 1a of the same diameter at the lower end for adjusting the column height, and an upper tapered portion 1b that becomes larger in diameter as it goes from the upper end to the lower end. A lamp attachment adapter 2 is attached to the upper end attachment portion 1c as shown by the dashed line.

Reference numeral 3 denotes a lower hollow concrete column having a relatively short lower part buried underground and having the same diameter over its entire length, and a part of the lower end thereof is provided with an inlet 4 for a power cable communicating inside and outside. Reference numeral 5 denotes a steel pipe having approximately the same length as the lower hollow concrete column 3, and the upper and lower ends 6 and 7 of the upper and lower concrete columns 1 and 3 are integrally inserted and fixed inside the upper and lower ends of this steel pipe 5. be.

This fixing means forms the lower end 6 of the upper hollow concrete column 1 and the upper end 7 of the lower hollow concrete 3 to have a small diameter by a thickness corresponding to the wall thickness of the steel pipe 5, and these upper and lower hollow concrete columns 1, The upper and lower ends 6, 7 of 3 are fitted to the inner circumferential surface of the upper and lower ends of the steel pipe 5, and the contact surfaces of both are adhered to each other with an appropriate adhesive, or both are fitted in a tapered manner. .

Therefore, the outer peripheral surface of the steel pipe 5 is flush with and continuous with the outer peripheral surfaces of the upper and lower hollow concrete columns 1 and 3. 8
is a vertically long large opening 5a provided in the steel pipe 5.
This is a door that opens and closes, and is attached to the outer circumferential surface of the steel pipe 5 with screws 9 at appropriate intervals, and ballasts and other electrical equipment can be accessed from the opening 5a into the space inside the steel pipe 5 through the opening/closing door 8. They install and take things in and out.

Note that short concrete tubes may be fitted inside the upper and lower ends of the steel pipe 5, and these short concrete tubes may be integrally connected to the upper and lower concrete columns 1 and 3, respectively.

〔effect〕

As described above, the present invention consists of a long upper hollow concrete column 1 consisting of a tapered upper part and a straight lower end part 1a having the same diameter for height adjustment, and a relatively short overall length having the same diameter. A steel pipe 5 having approximately the same length as the lower hollow concrete pillar 3 with a large vertical opening 5a is arranged between the lower hollow concrete pillars 3 whose lower parts are buried underground, and the upper and lower concrete pillars 1 and 3 are The upper and lower ends 6 and 7 are fitted to the inner circumferential surface of the upper and lower ends of the steel pipe 5, and the inside of the steel pipe 5 is used as a storage area for ballasts and other electrical equipment, and the opening 5a is located at the same position as the steel pipe 5.
Since the opening 5a is located in the middle of the opening 5a and the opening/closing door 8 is provided, it is possible to install and remove ballasts and other electrical equipment through the large vertical opening 5a. The connection can be made simply by fitting the upper and lower ends 6, 7 of the columns 1, 3 into the inner surface of the steel pipe 5, making the connection work easier. In addition, since the opening 5a of the steel pipe 5 is located in the middle of the steel pipe 5, this position is at a height from the ground that makes it easy to work, and a large stabilizer is installed in the space of the steel pipe 5. Other electrical equipment can be easily installed and removed while standing, making it convenient and improving work efficiency.

Furthermore, since a linear portion 1a of the same diameter is formed at the lower end of the long upper hollow concrete column 1, the insertion distance of the same diameter portion 1a into the steel pipe 5 can be adjusted to suit the location conditions in the park. It is convenient to be able to adjust the outdoor light pole to the appropriate height.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a simplified front view thereof, and FIG. 2 is an enlarged cutaway front view of the main parts thereof. DESCRIPTION OF SYMBOLS 1...Upper hollow concrete, 1a...Lower same diameter part, 1b...Upper tapered part, 3...Lower concrete column, 5...Steel pipe, 5a...Opening,
6...Concrete short tube, 7...Concrete short tube, 8...Openable window.

Claims (1)

[Scope of utility model registration request] A long upper hollow concrete column 1 consisting of a tapered upper part 1b and a linear lower end part 1a with the same diameter for height adjustment, and a relatively short overall length with the same diameter, the lower part of which is buried underground. A steel pipe 5 having approximately the same length as the lower hollow concrete columns 3 with a vertically long large opening 5a between the lower hollow concrete columns 3.
The upper and lower ends 6, 7 of the upper and lower concrete columns 1, 3 are fitted to the inner peripheral surfaces of the upper and lower ends of the steel pipe 5, and the inside of the steel pipe 5 is used as a storage area for ballasts and other electrical equipment, and an opening 5a is provided. An outdoor light pole characterized in that the position is located in the middle of the steel pipe 5, and the opening 5a is provided with an opening/closing door 8.