JP3765609B2 - Sound insulation wall - Google Patents

Description

[0001]
[Industrial application fields]
TECHNICAL FIELD The present invention relates to a sound insulation wall that is erected outdoors such as a side part on a road of an automobile, and more specifically, by using a solar cell as a power source and generating an anti-phase sound wave in a predetermined frequency band. In particular, the present invention relates to a sound insulation wall having a function of effectively reducing the noise of traveling, railway vehicle traveling noise, noise generated at various construction sites, and the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, particularly in an automobile road in an urban area or the like, a soundproof wall has been installed on the side of the road in order to prevent deterioration of the living environment around the road due to noise such as automobile exhaust noise and running noise.
[0003]
However, this type of soundproof wall has a structure that only isolates a traveling automobile from surrounding houses, such as a structure that can absorb a sound by providing a plurality of small holes, so that it is sufficiently noise-free. Cannot be reduced.
[0004]
In addition, the conventional sound barrier visually interrupts the road and the surrounding environment, so there are problems such as worsening the scenery during driving and increasing the accident rate due to monotony during driving. .
[0005]
[Problems to be solved by the invention]
The present invention solves the above-mentioned conventional problems, effectively reduces noise on automobile roads, attaches transparency between the road and the surrounding environment, and can contribute to the improvement of the cityscape. Is to provide.
[0006]
[Means for Solving the Problems]
The present invention, which has been made to solve the above-described problems, is a wall structure that is erected on a side part or a central separation zone on a road, wherein the wall structure includes an upper structure in which a solar cell is embedded, and a perspective view. And a sensor for detecting vibration from a noise generating source in the upper structure, the lower structure, or the central structure interposed between the upper structure and the lower structure. An anti-phase oscillation system including an acoustic wave output device that outputs an acoustic wave having an anti-phase in a predetermined frequency band toward a noise generation source connected to the sensor is installed.
[0007]
【Example】
Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. FIG. 1 is a schematic diagram of a first embodiment of the present invention.
[0008]
The present invention has a sound insulation wall standing on the side of a road of a car or a median separation zone, and more specifically, has a function of using a solar cell as a power source and reducing various noises by generating anti-phase sound waves. The wall structure that is erected on the side of the road or the median strip is mainly composed of an upper structure in which solar cells are embedded and a transparent lower structure. A sensor for detecting vibration from a noise generating source to the upper structure or the lower structure, or a central structure interposed between the upper structure and the lower structure, and a noise generating source connected to the sensor. The gist is that an anti-phase oscillation system including a sound wave output device that outputs sound waves having anti-phase in a predetermined frequency band is installed.
[0009]
FIG. 1 shows an embodiment in which the sound insulation wall of the present invention is installed on a highway A. In the figure, reference numeral 1 denotes a wall structure erected on a side portion or a median strip on the road A. For example, a cross-sectional shape with an upper side curved toward the road A side over a predetermined length of the road A Is formed. The wall structure 1 is mainly composed of an upper structure 2 in which a solar cell 2a is embedded, a central structure 3 in which at least a sensor 3a is embedded, and a lower structure 4 having transparency. Yes. The installation location of the sensor 3a can be arbitrarily changed depending on the height of the sound insulation wall, road conditions, and the like, and the central structure 3 as shown in the embodiment can be omitted.
[0010]
In the illustrated embodiment, the solar cell 2a is formed as a panel-like unit, and is installed so as to cover the entire surface on the opposite side of the road of the upper structure 2 having a cross-sectional shape with the upper side curved to the road A side. ing. This solar cell 2a is mainly used as a main power supply unit of an antiphase oscillation system to be described later, but besides this, it is combined with a storage battery to illuminate roads at night, illumination in tunnels, ventilation It can also be used as an auxiliary power supply unit for a device or the like, or can be used as a power supply for a surrounding environment such as a house.
[0011]
The wall structure 1 is composed of, for example, various soundproof panels made of a laminate of a sound absorbing material and a sound insulating material supported between pillars such as H-shaped steel as a whole. In order to add transparency, it is made of a material such as glass or plastic. In this case, for example, if a multilayer glass in which an air layer is provided between two plate materials is used, a soundproof effect can be produced, and if a plurality of holes are provided in one plate material, a sound absorption effect is provided. Can be generated. In forming these air layers, the diffracted sound in the noise propagating from the noise source is reduced by means such as forming a number of hollow passages with a predetermined gradient from the sound incident part. It is also considered to control the direction of noise propagation and reduce the effects of noise.
[0012]
The sensor 3a embedded in the central structure 3 is a diaphragm for detecting noise in the vicinity or a residual sound detector for detecting residual sound. The solar battery 2a is used as a power source for the noise generation source B (vehicle). An anti-phase oscillation system 5 including a sound wave output device 3b that outputs a sound wave having an anti-phase toward the object is connected. This antiphase oscillation system 5 includes a microphone, a pressure sensor, etc., a means for converting a pressure signal into an electric signal, a waveform inversion means, and a control means for driving and controlling the sound wave output device 3b so that the output signal of the sensor 3a is minimized. (Details are not shown).
[0013]
For example, in a highway where the sound insulation wall of the present invention is installed, the sensor 3a counts a predetermined frequency by catching vibrations propagating from the traveling sound of the automobile. A sound wave having a phase opposite to that of noise in a predetermined frequency band is output toward the vehicle traveling on the vehicle, and interferes with exhaust sound from the exhaust pipe of the automobile and noise exhaust sound such as traveling sound. The noise is canceled out by the interference action of the sound wave having the opposite phase to the noise.
[0014]
【The invention's effect】
Since the sound insulation wall of the present invention uses a solar cell for the power supply unit, the sound insulation system can be operated at low cost without depending on general commercial power. In addition, the air environment is not deteriorated. Furthermore, since the sound insulating wall of the present invention has a transparent structure in the lower structure, it is possible to improve the cityscape and improve the driving environment and reduce the accident rate. It is an epoch-making and significant invention that is excellent.
[0015]
[Brief description of the drawings]
FIG. 1 is a schematic diagram of a first embodiment of the present invention.
[Explanation of symbols]
A Road B Noise source (vehicle)
DESCRIPTION OF SYMBOLS 1 Wall structure 2 Upper structure 2a Solar cell 3 Central part structure 3a Sensor 3b Sound wave output device 4 Lower structure 5 Reverse phase oscillation system

Claims (1)

In a wall structure that is erected on a side part or a median strip on a road, the wall structure is composed of an upper structure in which a solar cell is embedded, and a lower structure having transparency, To a sensor for detecting vibration from a noise generation source to the upper structure or the lower structure, or a central structure interposed between the upper structure and the lower structure, and a noise generation source connected to the sensor A sound insulation wall comprising a reverse phase oscillation system provided with a sound wave output device that outputs sound waves having a reverse phase in a predetermined frequency band.

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