JP3200305U - Carpet type virtual earth for audio - Google Patents

Abstract

Provided is an audio carpet-type virtual earth that efficiently lowers the potential of an audio device and improves sound quality by a method that is as inconspicuous as possible while avoiding the adverse effects of incoming electromagnetic waves as much as possible. A ground wire 2 laid with a Bincho charcoal sheet 1 as a base in front of an audio device 8 and connected to a normal ground wire 6 coming out of the audio device, stripped of the sheath and loosened the stranded wire. A semiconductor electromagnetic wave absorbing sheet 3 made of carbon fiber without an insulating film is arranged in a wavy manner so that it wraps around it, and a rug 7 such as a tile, carpet or carpet is fixed on a cellophane tape 5 or the like. Lay down. [Selection] Figure 1

Description

  The present invention relates to the shape and material of a virtual ground used for improving the sound quality of audio equipment, and combinations thereof.

  The hobby that an individual pursues as much as possible the improvement of sound quality when playing music with audio equipment is called pure audio. In this hobby, grounding is important in principle. Since the electrical audio signal is converted into a difference from the reference potential in the audio equipment, it is possible to transmit, amplify, and reproduce the audio signal more accurately by stabilizing the reference potential of the audio equipment at a low level with ground. Because, you can enjoy good sound quality. This is why audio amplifiers have a ground terminal.

  There are three main grounding methods that can be considered for home use. The first is a method of burying electrodes in the ground. Although there are some pros and cons, pure audio is acceptable, and the reference potential of the audio device can be lowered and stabilized by the maximum method. However, there are many cases where there is no dedicated garden in apartment houses, and in this case, this method cannot be used.

  The second is to use a ground wire wired to the outlet, which is installed in outlets for water-related devices such as microwave ovens, refrigerators, washing machines, etc. Is to prevent. This is generally said to be unusable for audio. The reason is that a refrigerator or the like is always in operation at home, and the electrical noise may enter the audio device through the ground wire and deteriorate the sound quality.

The third is what is called virtual earth among audiophiles in recent years. Unlike the above two methods, there is no ability to escape a large current to the ground to avoid the risk of electric shock, but it can make the potential of audio equipment This is a method that stabilizes the sound as much as possible to improve the sound quality of the audio.
Put Bincho charcoal, which is supposed to emit negative ions, and tourmaline, which is said to have negative potential, into a large bottle that can be used to pickle plum wine, round the electrodes such as copper plates to increase contact with them, and connect it to the ground terminal This is a large bin-type virtual earth that lowers the potential of the audio device and improves the sound quality of the audio by connecting to.
Fig. 3 shows the use of this large bin-type virtual earth made by a limited number of pure audio enthusiasts.
Also, although it is not a bottle type, a palm-sized small virtual earth that is blended with ore such as tourmaline and surrounded by a copper plate is tens of thousands of yen, and a “mineral mix” that contains gold, silver, copper, zinc, etc. in a wooden box A large wooden box type virtual earth built in large mass is several hundred thousand yen, and each is sold by an audio accessory manufacturer, but it is hard to say that it provides a virtual earthing capacity that is commensurate with the price.

Japanese Patent Application Laid-Open No. 07-265791

  However, according to the above technique, if the ground buried in the ground is not available in an apartment house or the like, the bin will become large in length and breadth in order to improve the performance of the large bin type virtual ground. While requiring a place in a small Japanese residential environment, the effect is limited. In addition, there is a concern that the ground wire or the large bottle type virtual ground itself receives the incoming electromagnetic wave, and it travels through the ground wire and enters the audio equipment, thereby deteriorating the sound quality. If the ground wire is shortened so that such a thing does not occur as much as possible, a large and large bin-type virtual ground is arranged near the audio device, which often leads to an extremely unfavorable aesthetic result. Many pure audio enthusiasts emphasize not only sound quality but also aesthetics. Reflecting this, audio equipment is designed and sold with excellent design.

  Accordingly, an object of the present invention is to provide a virtual ground that efficiently lowers the potential of an audio device and improves sound quality by a method that is as inconspicuous as possible while avoiding the adverse effects of incoming electromagnetic waves as much as possible.

If the ground wire of an audio device is connected as a virtual ground to an iron plate that is 1 cm thick and about the size of a palm, the potential does not change significantly even if ten or more iron plates of the same size are stacked. However, when the steel plates are connected side by side, it is observed that the potential drops remarkably with each addition. This indicates that the capacity of the virtual earth is deeply related to the horizontal area rather than its mass and volume. This is the reason why the effect of the large bottle type virtual earth was limited.
In order to make the best use of this property of the virtual earth, use the space of the rug that is often laid in the front center of the audio equipment in order to adjust the reflected sound of the floor, and use the wide and thin horizontal space, and the high frequency over 99.5% The main feature of the present invention is that an electromagnetic wave absorbing sheet made of fine carbon fibers that can be blocked is used to block the adverse effects of incoming electromagnetic waves and at the same time to have a horizontal and wide potential of the ground wire as a semiconductor.

  According to this device, since the electromagnetic wave absorbing sheet is a semiconductor, the potential of the grounding wire is widened in the horizontal direction while being attenuated according to the distance from the grounding wire. At the same time, the incoming electromagnetic wave is blocked, so there is no worry of noise. In addition, by covering it with tiles, carpets, carpets, etc., the human eyes are not touched at all, and the aesthetic appearance is not impaired. In other words, it is a virtual earth for audio that cannot be seen.

FIG. 1 is a plan view showing an embodiment of the present invention. (Example 1) FIG. 2 is a sectional view showing an embodiment of the present invention. (Example 1) FIG. 3 is a front view showing the prior art. (Conventional technology) FIG. 4 is a sectional view showing another embodiment of the present invention. (Example 2)

  One embodiment of this device is shown in FIGS.

  The base material is a Bincho charcoal sheet, which is an insulator of polyethylene foam, including powdered Bincho charcoal commonly used in large bottle type virtual earth. As shown in the plan view of FIG. 1, the Bincho charcoal sheet is several square meters and has a much larger horizontal area than the conventional large bottle type virtual earth. The ground wire is stripped for several meters, and then the strand wire structure is loosened. A semiconductor electromagnetic wave absorbing sheet made of fine carbon fiber that can cut off high frequencies 99.5% or more and without an insulating film is placed on a loose ground wire and fixed with cellophane tape. In addition, a heavy tile carpet or carpet is placed on top.

According to this embodiment, the electromagnetic wave absorbing sheet blocks the incoming electromagnetic wave noise, and at the same time, since it is a semiconductor, it has a wide and horizontal potential while attenuating the potential of the ground wire in accordance with the distance from the ground wire, and the audio equipment connected thereto The potential is effectively and stably lowered, and the sound quality is extremely good.
As shown in the cross-sectional view of FIG. 2, a heavy tile carpet, carpet, or other rug such as a carpet is secured by adhering all the materials in the carpet-type virtual earth, and is blocked by the rug. Therefore, it does not detract from the beauty.

  In the embodiment of FIGS. 1 and 2, the base material is a Bincho charcoal sheet that is cheaper than the electromagnetic wave absorbing sheet, but in other embodiments, the base may use an electromagnetic wave absorbing sheet. Since high-frequency electromagnetic waves are blocked even under the carpet-type virtual earth, there is a possibility that a better sound quality can be obtained.

  Also, in the embodiment of FIG. 4, Bincho charcoal and tourmaline, which are often used in large bottle type virtual earths, are crushed to several millimeters and then wound on a loose ground wire and sealed with an electromagnetic wave absorbing sheet. The effects of Bincho charcoal that generates negative ions and tourmaline with a negative potential are transmitted through the electromagnetic wave absorbing sheet and the ground wire to further lower the potential of the audio device and improve the sound quality.

DESCRIPTION OF SYMBOLS 1 Bincho charcoal sheet 2 Ground wire which stripped coating and loosened strand 3 Semiconductor electromagnetic wave absorption sheet made of carbon fiber without insulation film 4 Crushed tourmaline and pulverized Bincho charcoal 5 Cellophane tape, etc. 6 Normal grounding Line 7 Heavy tiles, carpets, carpets and other rugs 8 Audio equipment 9 Conventional large bin-type virtual earth

Claims (1)

  Install a base sheet in the space of the rug in front of the audio equipment, place an uncovered ground wire over it as long as possible, and cover it with an electromagnetic wave absorbing sheet made of carbon fiber, which is a semiconductor. The audio is characterized by having the potential of the ground wire and blocking the adverse effects of incoming electromagnetic noise, and effectively and stably lowering the potential of the audio equipment without damaging the aesthetics and improving the audio quality. Carpet type virtual earth.