JPH04249895A - Lightning discharger and outdoor structure equipped with this device - Google Patents

Abstract

PURPOSE:To discharge thunder and lightning from all directions accurately and protect a structure against a thunderbolt by providing a thunder and lightning receiving unit which is arranged in the top upper part of an outdoor structure so as to be formed along the overall length of this structure and an electric conductor which is to flow the thunder and lightning electric current generated in the thunder and lightning receiving unit to the earth. CONSTITUTION:A thunder and lightning receiving unit 1 is provided in the upper part of an outdoor structure 2, and is formed in the length approximately along its overall length. Thunder and lightning electric current generated in the thunder and lightning receiving unit 1 accompanied by a thunderbolt is flowed to the earth through an electric conductor 3. A Na lighting fixture constituting the structure 2 has a lighting body 5, and the lighting body 5 is supported with a pole serving also as the electric conductor. This lighting body 5 houses a Na lamp therein, and a translucent cover 6 is arranged so as to be opposed to the lamp. The base part is connected by means of a fixing jig 7 both mechanically and electrically. Thereby, even if a discharge electrode is placed in either position, the thunderbolt never strike the lighting body so that a sufficient lightning discharge effect can be obtained.

Description

[Detailed description of the invention]

[Object of the invention]

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightning arrester with improved lightning protection effect and a structure equipped with this lightning arrester.

0003

2. Description of the Related Art It is common practice to provide lightning rods for lightning protection of structures such as buildings and equipment installed outdoors. For example, sodium lamps are equipped with lightning rods. That is, sodium lamps are generally horizontally long, and a lightning rod is provided at the top of the lamp.

0004

Although this provides considerable lightning protection, it is not necessarily sufficient. By lightning,
In severe cases, the latch may be burnt out, the reflector may turn black, or
This could lead to damage such as burnout around the terminal block and socket.

[Configuration of the invention]

[0006]

[Means for Solving the Problems] The present invention as set forth in claim 1 provides a lightning receiving section provided above the top of a structure installed outdoors and formed to have a length along substantially the entire length of the structure; The present invention is characterized by comprising a conductor that allows the lightning current generated in the lightning receiving portion to flow to the ground due to lightning receiving.

According to a second aspect of the present invention, there is provided an outdoor structure comprising the lightning arrester according to the first aspect.

[0008]

[Function] A lightning receiver with a length that runs approximately the entire length of the structure is provided above the top of the structure, so even if the structure is horizontally long, this lightning receiver will catch lightning from multiple directions. It becomes possible to provide reliable lightning protection. In addition, by installing such a lightning arrester on a structure, even if the structure is horizontally long,
This structure can be reliably protected from lightning strikes.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be explained below with reference to the drawings. Reference numeral 1 denotes a lightning receiving section, and this lightning receiving section 1 is provided above a structure 2 installed outdoors, and is formed to have a length along substantially the entire length of this structure 2. 3 is a conductor that allows the lightning current generated in the lightning receiving section 1 to flow through to the ground. The structure 2 is a sodium lamp in this example.

Next, to explain the above embodiment in more detail, the sodium lamp, that is, the structure 2 has a lamp body 5, and this lamp body 5 is supported by a pole which also serves as the conductor 3. Although not shown, the lamp body 5 houses a sodium lamp inside. 6 is a translucent cover provided facing the lamp. The lightning receiver 1 is a rod-shaped body made of a material based on standards such as JIS H4040, bent into an L-shape, and the base is mechanically and electrically connected to the tip of the pole that also serves as the conductor 3 by a fixing device 7. connected. Next, the operation of the above embodiment will be explained. A lightning strike experiment was conducted to evaluate the case where a commercially available lightning rod was installed and the case where the lightning arrester of the present invention was installed. A commercially available linear lightning rod was used, and the base was fixed perpendicularly to the ground with a fixing device to the tip of the pole (conventional device), as in the case of the present invention. For the conventional device and the device of the present invention, the discharge electrode was positioned 1.5 m above the lamp body 5. The above lamp was fixed to a 1.2 m mini-pole and grounded through this pole. A voltage of about 1000 KV was applied using an impulse voltage generator. Electrical energy is approximately 100KJ, earth resistance is 10
It was set to be less than K ohm. The experimental results show that in the case of conventional equipment,
There was no problem if lightning struck the base of the lamp, but if lightning struck from above the tip or from above the side, the lamp would be struck by lightning. In the case of the device of the present invention, lightning strikes were generated by positioning the discharge electrode at the same position as in the conventional device or in any direction. The results show that no matter where the discharge electrode is placed, lightning does not strike the lamp body, confirming a sufficient lightning protection effect.

[0011] The structure, ie, the lamp body, equipped with the lightning arrester is reliably protected from lightning strikes.

[0012] In the above embodiment, a pole also served as the conductor 3, but the present invention is not limited to this, and an electric wire may also be used. In addition to light fixtures, the structure may be a building, an outdoor advertising tower, or any other arbitrary structure, and is effective when these structures are horizontally long.

[0013]

As described in detail above, the present invention as claimed in claim 1 provides a lightning arrester which is provided above the top of a structure installed outdoors and is formed to have a length along substantially the entire length of the structure. Since the lightning receiver is equipped with a conductor that conducts the lightning current generated in the lightning receiver to the ground, the lightning receiver catches lightning from multiple directions, ensuring reliable lightning protection. It becomes possible to do so. Furthermore, since the present invention as claimed in claim 2 is provided with the lightning arrester according to claim 1 in a structure, even if this structure is horizontally long, it is possible to reliably protect this structure from lightning strikes. It becomes possible.

[Brief explanation of the drawing]

FIG. 1 A partially cutaway side view of an embodiment of the present invention.

[Explanation of symbols]

Claims (2)

[Claims] Claim 1: A lightning receiving section provided above the top of a structure installed outdoors and formed along approximately the entire length of the structure; A lightning arrester characterized by comprising a conductor that allows lightning current to flow through the ground. 2. An outdoor structure comprising the lightning arrester according to claim 1.