JP3663572B2 - Electromagnetic shield acoustic facility - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electromagnetic shielding acoustic facility, and more particularly, to an electromagnetic shielding acoustic facility characterized by achieving sound insulation and electromagnetic shielding performance in a studio or the like with a single reinforcing plate.
[0002]
[Prior art]
The acoustic facilities represented by studios have radio waves such as acoustic systems such as wireless microphones, mobile telephones, extension telephone systems such as income using PHS, OA equipment corresponding to the information age, and advanced information equipment such as personal computers. Equipment that uses is used vertically and horizontally.
Although sound facilities need to secure a quiet space in order to record the intended music and voices with sufficient quality, recently many mobile phones and PHSs have suddenly disappeared. Calls made with outgoing sounds or mobile phones are becoming obstacles to work. For this reason, the studio restricts the use of mobile phones, but the current situation is that they are not thoroughly implemented by outpatients.
[0003]
The use of radio waves as described above in acoustic facilities is not necessary from noise or noise from the equipment that controls high power such as air conditioning machines and elevators, which avoids radio interference and complications in studios, etc. It is required to establish "information security prevention" to prevent "malfunction of information equipment" due to radiated radio waves and "information security" to prevent information leakage from internal equipment due to radio waves transmitted by wireless microphones. There is a tendency to provide an electromagnetic wave shield of 20 dB to 30 dB at 30 MHz to 3 GHz.
[0004]
Therefore, in recent acoustic facilities, in addition to ensuring acoustically high sound insulation performance that forms the original quiet sound environment, it is a natural form to establish an electromagnetic wave shield necessary for radio wave countermeasures. ing. And, as a concrete structure in the building, since the entire building is in a sound insulation and electromagnetic wave shielding state, the sound facility itself such as a studio and the like is subjected to sound insulation and electromagnetic wave shielding treatment in consideration of efficiency. Is becoming essential.
[0005]
In studios in acoustic facilities, the acoustic space is generally composed of partition walls that achieve sound insulation performance and electromagnetic wave shielding in addition to the main body structure. However, in order to create an acoustically quiet space, a completely floating structure is used. A sound insulation structure has been adopted.
As shown in FIG. 6, the fully floating structure is such that the studio 30 is floated from the building structure 32 by a vibration isolating device 31 including a vibration isolating suspension and a vibration isolating support, and the vibration to the internal sound absorbing layer 33 is blocked. It has a double structure that does not transmit solid propagation sound into the studio.
In sound insulation work in studios and the like, in general, a sound insulation structure necessary for a predetermined process is constructed separately from other constructions, including the case where a completely floating structure is not adopted.
[0006]
On the other hand, since the electromagnetic wave shielding structure is constructed by applying a single shield layer 34 to the entire object to be electromagnetic wave shielded, the conventional electromagnetic wave shielding work is performed under a process that is independent from the construction of the completely floating structure. As a result, in the studio adopting the completely floating structure, the electromagnetic wave shielding layer 34 was constructed across the building structure 32 and the fireproof / sound insulation layer 35 as a result.
[0007]
Also, the ceiling and wall structure of the studio 30 is configured as shown in FIG. 7. First, as an electromagnetic shielding work, an electromagnetic wave shielding layer 34 using a metal mesh, nonwoven fabric or the like on the surface of the fireproof / sound insulating wall 35 is used. Next, as the sound absorbing work, the sound absorbing panel 37 attached to the panel mounting crosspiece 36 is provided on the electromagnetic wave shielding layer to constitute the internal sound absorbing layer 33.
In the case of a completely floating structure, glass wool 38 is provided between the structure 32 .
[0008]
As described above, in conventional acoustic facilities, the sound insulation structure and the electromagnetic wave shield structure were separately constructed using different materials suitable for each, so that even if a completely floating structure is used, it is acoustically functional. There is a possibility that a sound bridge may be generated and a sound insulation performance may be lowered, and a lot of members are used as construction work, and the process is complicated, resulting in a longer construction period and an increase in cost.
[0009]
[Problems to be solved by the invention]
The present invention has been improved in view of the above problems, and by achieving sound insulation performance and electromagnetic shielding performance with a single reinforcing plate, the sound insulation performance and electromagnetic shielding performance are established to predetermined values. The purpose is to provide an electromagnetic shielding acoustic facility that can shorten the construction period and reduce the cost by simplifying the construction system and eliminating the complexity of the process.
[0010]
[Means for Solving the Problems]
The electromagnetic shielding acoustic facility according to the present invention includes a fixed-side structure and a floating-side structure that have a completely floating structure. The fixed-side structure is subjected to a single electromagnetic wave shielding treatment, while the floating-side structure has a lead plate. A sound insulation reinforcement plate lined with a plaster board is affixed, and sound insulation performance and electromagnetic wave shield performance are established at the same time by applying sound insulation treatment after bonding the sound insulation reinforcement materials with a conductive material. A desired electromagnetic wave shielding performance value is comprehensively formed by the electromagnetic wave sealing performance and the electromagnetic wave shielding performance of the floating structure .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The inventors have experimentally investigated the characteristics of various materials in order to solve the problems in the acoustic facilities described above, and as a result, have confirmed that lead has attenuation performance with respect to electromagnetic waves.
For lead, since it has a function to attenuate building vibration, it is layered and laminated alternately with elastic rubber and used as a damping material for anti-vibration, seismic isolation devices, etc. Since it has sound insulation performance, it has been used as a sound insulation reinforcement, but its characteristics have not been clarified with respect to electromagnetic waves.
[0012]
FIG. 1 shows electromagnetic wave shielding performance (dB) at each lead frequency (MHz).
In the experiment, the electromagnetic shielding performance was measured using a lead plate with a thickness of 0.5 mm. As shown in the figure, a high shielding performance of 50 dB was shown at 300 MHz to 800 MHz, which is the use frequency of a wireless microphone or the like. ing.
[0013]
Therefore, as described above, in an acoustic facility such as a studio, a lead material is provided on the inner surface of the fireproof / sound insulation partition wall, and the joining surface is joined with a conductive tape or the like to form an electrically integrated state. It is clear that by installing a sound absorbing panel also serving as a finishing material on the top, an electromagnetic wave shield of 20 dB to 30 dB can be established in a radio wave of 30 MHz to 1 GHz used in the facility, and a predetermined sound insulation performance can be achieved.
[0014]
The electromagnetic shielding acoustic facility according to the present invention has a sound insulation reinforcing plate composed of a lead material such as a lead plate lined with a plaster board on the surface of the main body structure constituting the acoustic facility, and the reinforcing plates are laminated with a conductive material. The sound shielding performance and the electromagnetic shielding performance as an acoustic facility are established at the same time by performing a sound absorbing treatment while integrating them, and the electromagnetic shielding acoustic facility according to the present invention will be described below based on the drawings. I will explain.
[0015]
FIG. 2 is a cross-sectional view showing a fireproof / sound insulation partition wall forming a studio.
The studio 1 is configured by installing a fireproof and sound insulating partition wall 2 between the floor slab and the upper slab.
Since the inner surface of the fireproof / sound insulation partition wall is equipped with lead material 3 that is conductive and exhibits a sound insulation effect, the joint surface of the fireproof / sound insulation partition wall is joined to each other with a conductive tape 4 or the like, The inner surface of the fireproof / sound insulation partition wall 2 is formed in an electrically integrated state.
The inner surface of the fireproof / sound insulation partition wall 2 is electrically connected to a deck plate 7 disposed below the upper slab 6 via an electromagnetic shielding material 5 and is grounded through a metal part in the housing of the main body structure. ing. With the above configuration, the studio establishes electromagnetic shielding performance.
On the inner surface of the fireproof / sound insulation partition wall 2, a sound absorbing panel 9 attached to a panel mounting horizontal rail 8 or the like is disposed. The lead material 3 provided on the inner surface of the fireproof / soundproof partition wall 2 has a sound insulation function, so that the sound insulation performance necessary for the studio is established.
[0016]
Since the electromagnetic shielding acoustic facility described above is equipped with only lead material on the inner surface of the fireproof / soundproof partition wall 2 to establish two functions of electromagnetic shielding and sound insulation performance, the number of members used can be reduced. At the same time, the construction of the electromagnetic wave shielding layer can also be carried out as a sound insulation work, so there is no complication between the electromagnetic wave shielding work and the sound insulation work.
[0017]
FIG. 3 is a perspective view showing an embodiment of a fireproof / sound insulation partition wall.
The fireproof / sound insulation partition wall 2 is composed of a building plate such as an ALC plate and a lead plate 11 lined with a plaster board. A portion where the lead plates are attached to each other is bonded to the joint surface 12 of the fireproof / sound insulation partition wall with zinc tape 13, and the gap at the joint surface is sealed to achieve acoustic performance and electromagnetic wave shielding function.
In addition to the above, as a fireproof / sound insulation partition wall, a gypsum board backing or a lead plate alone may be employed, and other conductive tapes may be used instead of zinc tape.
[0018]
Figure 4 is a implementation in the form of electromagnetic wave shielding acoustic facility according to the invention, is a cross-sectional view showing a studio constituting a full floating structure.
The floating structure 21 of the studio 20 is floated from the fixed structure 23 by a vibration isolator 22 including a vibration proof suspension and a vibration isolating support, and the vibration to the floating structure 21 is blocked.
The ceiling and wall surface of the floating structure 21 are equipped with a lead material 25 that exhibits electrical conductivity and sound insulation effect on the surface or inside thereof, and the joint surfaces are joined together with a conductive tape or the like to electrically connect the inner surface. Thus, an electromagnetic shielding state of 15 to 20 dB is formed in an integrated state.
An electromagnetic wave shielding material 26 is attached to the entire inner surface of the fixed side structure 23 to form an electromagnetic wave shielding state of 15 to 20 dB.
The electromagnetic wave shielding performance of the studio 20 is displayed as a total value obtained by adding up the electromagnetic wave shielding performances of the floating side structure 21 and the stationary side structure 23. In this embodiment, the electromagnetic wave shielding performance is 30 dB or more. It is possible to ensure shielding performance.
[0019]
FIG. 5 is a partial cross-sectional view showing a sound insulation and electromagnetic wave shield state of a studio configured with a completely floating structure.
On the ceiling and the wall surface of the floating structure 21, a sound absorbing panel 28 attached to the panel mounting horizontal rail 27 and the like is disposed. Since the lead material 25 provided on the ceiling and the inner surface of the wall also has a sound insulation function, the sound insulation performance considered as a studio and an electromagnetic wave shielding state of 15 to 20 dB are formed.
On the other hand, a simple electromagnetic shielding material 26 such as a conductive non-woven fabric or a metal mesh is pasted on the entire inner surface of the fixed side structure 23, and the performance considered as the sound insulation performance is the same as that of the floating side structure. An electromagnetic wave shielding state of ˜20 dB is formed.
[0020]
As described above, the studio that this onset bright Therefore construction establishes two functions of the electromagnetic wave shielding and sound insulation equipped with only Namarizai the inner surface of the float side structure 21, the inner surface of the fixed side structure 23 Since general electromagnetic shielding work is performed on the entire area, there is no acoustic sound bridge, and the overall number of members used in the construction can be reduced. Construction can also be performed as sound insulation work, and there is no complication between electromagnetic shielding work and sound insulation work.
[0021]
As mentioned above, although the present invention has been described in detail based on the embodiment, the electromagnetic shielding acoustic facility according to the present invention basically has a reinforcing plate composed of a lead material pasted on the surface of the main body structure in the facility, The present invention is characterized in that the sound insulation performance and the electromagnetic wave shield performance as an acoustic facility are established at the same time by applying a sound insulation treatment while bonding between the reinforcing plates with a conductive material to achieve integration. The present invention is not limited to the embodiments, and various modifications can be made without departing from the spirit of the present invention.
[0022]
【The invention's effect】
The electromagnetic shielding acoustic facility according to the present invention has a sound insulation reinforcing plate made of a lead material such as a lead plate lined with a plaster board on the surface of a main body structure constituting the acoustic facility, and the reinforcing plates are bonded with a conductive material. The sound insulation treatment and the electromagnetic shielding performance as a sound facility are established at the same time, and the electromagnetic shielding work can be constructed with the same level of difficulty as general interior construction. In the past, the process for achieving the two functions was performed separately. In one process, the number of materials and man-hours was reduced to reduce costs while eliminating the complexity of construction. Has the effect of shortening.
[0023]
In addition , the acoustic facility has a completely floating structure, and a single electromagnetic shielding treatment is applied to the fixed side structure of the fully floating structure, and a sound insulation reinforcing plate made of a lead material is attached to the floating side structure, and the fixed side structure Each electromagnetic shielding performance of the body and the floating structure is formed by individually forming an electromagnetic shielding layer whose performance is lower than the desired electromagnetic shielding performance value, and the desired electromagnetic shielding performance value is comprehensively formed. Therefore, in addition to the above effects, it solves the problem of causing sound bridge acoustically and causing a decrease in sound insulation performance, and demonstrates the effect of simultaneously establishing sound insulation performance and electromagnetic wave shielding performance as an acoustic facility. .
[Brief description of the drawings]
[1] Frequency of lead - from full floating structure according to the relative field strength diagram 2 is a cross-sectional view of fireproof sound insulation partition wall of studio 3 is a perspective view of fireproof sound insulating partition wall [4] The present invention [Fig.5] Partial sectional view showing the sound insulation / electromagnetic shielding state of a studio composed of a fully floating structure. [Fig.6] Cross section of a completely floating structure in a conventional studio. [Fig.7] Fireproof / soundproof partition of a conventional studio Cross section of the wall 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 1 Studio 2 Fireproof / sound insulation partition wall 3 Lead material 4 Conductive tape 5 Electromagnetic wave shield material 6 Upper slab 7 Deck plate 8 Horizontal rail for panel mounting 9 Sound absorption panel 10 Plaster board 11 Lead plate 12 Joint surface 13 of fireproof / sound insulation partition wall Zinc Tape 20 Fully floating studio 21 Floating side structure 22 Vibration isolator 23 Fixed side structure 24 Internal sound insulation layer 25 Lead material 26 Electromagnetic wave shielding material 27 Horizontal rail 28 for panel mounting Sound absorbing panel 30 Fully floating studio 31 Vibration isolation Equipment 32 Building structure 33 Internal sound absorbing layer 34 Electromagnetic wave shielding layer 35 Fireproof and sound insulating wall 36 Horizontal rail for panel mounting 37 Sound absorbing panel 38 Glass wool

Claims (1)

It has a fixed side structure and a floating side structure that are completely floating structures, and the fixed side structure is subjected to a single electromagnetic wave shielding treatment, while the floating side structure has a sound insulation reinforcement plate backed by a plaster board. The sound insulation performance and the electromagnetic wave shielding performance are established simultaneously by applying the sound insulation treatment after the sound insulation reinforcement material is pasted together with a conductive material, and the electromagnetic wave sealing performance of the fixed side structure and the floating side structure. A desired electromagnetic shielding performance value is comprehensively formed with the electromagnetic shielding performance of the electromagnetic shielding acoustic facility .

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