JPS63173423A - Electromagnetic wave shield duct system in building - Google Patents

Abstract

PURPOSE:To put communication using various information devices in radio into practical use by arranging a communication duct surrounded by an electromagnetic wave shield member in a building and facing an antenna of a communication equipment to a proper position in the duct so as to eliminate the disturbance by a noise radio wave or crosstalk fault by other communication radio wave. CONSTITUTION:The electromagnetic wave shield member 2 is installed onto a slab face of a frame 1 of a building. Moreover, the electromagnetic wave shield member 2 is sticked to the rear face of a floor panel 3 to form a communication duct as a space sealed by the electromagnetic wave shield member as a whole. A communication outlet 6 is provided to a proper position on the floor panel 3 and the communication antenna 7 is fitted removably to the outlet 6. The communication ducts through adjacent rooms are connected by a through- duct 10. Moreover, rooms of upper and lower stairs are connected by a vertical duct 11. For example, in case of radio communication between a host computer 12 and each communication equipment 8, the communication antenna 7 is faced with the common duct via the outlet 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to an electromagnetic wave shielding duct system in buildings.

[Prior art and its problems 1 Generally, inside and outside buildings such as offices, hospitals, schools, shops, factories, and warehouses, various types of information such as transceivers, telemeters, remote controllers, computers, and communication terminals are used. Communication equipment is used.

However, for example, noise radio waves propagating from external power lines or noise radio waves from motors inside the building can interfere with the above-mentioned information and communication equipment inside the building via substation equipment and indoor power wiring, and may It also causes interference to the above information communication equipment via indoor communication wiring.

In addition, external noise radio waves are introduced into the building through the air conditioning duct and interfere with the information communication equipment.

Furthermore, radio waves emitted from mobile radio stations and fixed radio stations, which are powerful radio wave sources, also cause interference to information communication equipment.

Due to the above reasons, highly reliable information transmission using radio waves is currently impossible.

On the other hand, radio wave resources are limited, and the number of usable radio wave channels is limited to about 10 to 100 channels. Therefore, if you try to use a large number of information and communication devices, interference will occur between each information and communication device, and as a result,
Since the number of information communication devices that can be used at the same time is limited, there are problems such as having to wait until the radio waves being used by others are finished, making it impossible to make effective use of the radio waves.

As mentioned above, despite the fact that buildings are subject to interference due to electromagnetic waves both inside and outside, there are no buildings that have taken these countermeasures.

Furthermore, conventional convenience store terminal equipment and the like have been connected using wires such as electric wires and optical cables.

However, portable terminal devices have come into use due to the miniaturization and power saving of devices, and in recent years there has been a demand for wireless systems, and wireless communication systems using infrared rays have been developed.

However, infrared rays have strong directivity, low transmission ability, and many malfunctions, so it is difficult to use radio wave communication. However, as mentioned above, radio communication has the problem of intrusion of radio waves from the outside and leakage to the outside, which has prevented its practical use.

[Purpose of the Invention] The present invention was made to solve the above-mentioned conventional problems, and its purpose is to avoid being affected by radio waves from outside the building, and to transmit radio waves to the outside. Xiaomi's objective is to provide an electromagnetic wave shielding duct system for buildings that allows communication and equipment to be moved freely within the building.

[Configuration 1 of the Invention The electromagnetic wave shielding duct system in a building of the present invention includes a communication duct surrounded by an electromagnetic wave shielding material disposed inside the building,
The present invention is characterized in that the antenna of the communication device can be exposed to an appropriate position within the communication duct.

E Example 1 An example of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, 1 is a building frame, and an electromagnetic wave shielding material 2 is laid on the slab surface of the building frame.

This electromagnetic wave shielding material 2 is an electromagnetic wave absorbing material made of, for example, a metal plate such as a galvanized iron plate, an electromagnetic wave reflecting material such as a wire mesh, a metal grid, a plated or vapor-deposited plate/film, or a magnetic material with high magnetic permeability such as 7-elite. These can be used alone or in combination depending on the purpose of shielding.

Reference numeral 3 designates a floor panel, on the back of which the electromagnetic wave shielding material 2 is also pasted, forming a communication duct as a space sealed by the electromagnetic wave shielding material as a whole.

The electromagnetic wave shielding material 2 on the slab and the electromagnetic wave shielding material 2 on the floor panel 3 are electrically conductively joined to each other by conductive fasteners 4.

Further, the floor panel 3 of this embodiment is divided into a plurality of parts,
The seams are electrically connected by conductive 7 aseners 5.

Communication outlets 6 are provided at appropriate locations on the floor panel 3, and a communication antenna 7 is detachably attached to the outlets 6. This communication antenna 7 is connected to nearby indoor communication equipment 8.

Incidentally, on the surface of the floor panel 3, an electrically insulating finishing material 9 such as carpet or cork is laid.

*The above communication duct between adjacent rooms is
As shown in the figure, they are connected by a through-out 10. Moreover, the rooms on the upper and lower floors are connected through vertical ducts 11.

Since the present embodiment is configured as described above, for example, when wirelessly communicating between the host computer 12 and various communication devices 8, each communication antenna 7 is
in a common duct, in this case,
Since the duct is externally shielded from radio waves, an independent communication space is formed. Further, if the outred 6 is placed in an appropriate position in advance, the communication device 8 can be selectively moved to a free position simply by moving the antenna 7.

As is clear from the above embodiments, the communication duct of the present invention includes a flat shielded space, a cylindrical shielded space, etc. installed on the entire or partial floor of a room.

[Effects of the Invention] (1) It becomes possible to put into practical use wireless communication by various information devices, which until now has been unreliable for information transmission due to interference caused by noise radio waves and interference caused by other communication radio waves.

(2) Given the limited number of radio wave resources, it is possible to divide the building into multiple independent rooms and eliminate radio wave leakage from each room, making it possible to use a large number of information and communication devices at the same time. This enables effective use of radio wave resources.

(3) Information and communications equipment in buildings can be made cordless using radio waves, eliminating the need for complex wiring changes when replacing or rearranging information and communications equipment, allowing for flexible layouts.

(4) Various information and communications equipment can be moved and connected to computers and other information and communications equipment from any location within the building, making it possible to create a highly fluid 111 reporting system.

(5) Wireless OA (office automation), wireless BA (building automation), etc. can be put into practical use.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the electromagnetic wave shielding duct system of the present invention,
FIG. 2 is an enlarged explanatory diagram of the main part. 1... Structure, 2... Electromagnetic wave shielding material, 3... Floor panel, 4°5... Conductive 7 asener, 6... Out left, 7... Communication antenna, 8...・Communication equipment, 9
... Finishing material, 10... Penetrating duct, 11... Vertical duct, 12... Host computer.

Claims (1)

[Claims] An electromagnetic wave shielding duct for a building, characterized in that a communication duct surrounded by electromagnetic wave shielding material is arranged inside the building, and an antenna of a communication device can be exposed at an appropriate position within the communication duct. system.