JP4232873B2 - Sound absorption louver panel for vehicle driving path - Google Patents

Description

  The present invention relates to a sound-absorbing louver panel for a vehicle traveling road used for a ceiling portion near a tunnel exit in a general road structure, a viaduct structure, etc., a semi-underground tunnel structure (digging structure), and the like. The present invention relates to a sound absorbing louver panel for a vehicle travel path for improving the performance of the vehicle.

A sound absorbing louver panel for a vehicle traveling path is configured by assembling and arranging a plurality of louver members in parallel in a rectangular frame, for example, installed in a horizontal bridge spanned on the ceiling of a semi-underground tunnel It is intended to build a ceiling surface that allows sound insulation, ventilation and lighting. And as a conventional sound-absorbing louver panel, the cross-sectional shape of the sound-absorbing panel material constituting the louver member is a "<" shape (Japanese Patent Laid-Open No. 2002-309522, Japanese Utility Model Publication No. 6-47932).
Alternatively, a zigzag type (Japanese Patent Laid-Open No. 2000-257026) has been proposed.

  However, the sound absorption panel material with a cross-sectional shape of "K" or zigzag must be molded into a special shape for the box that is filled with sound absorbing material such as glass wool or rock wool. There was a problem that production was difficult. In addition, because of the special shape, when storing and loading, there is a problem that a wasteful space is generated, which makes it difficult to handle and poor transport efficiency.

Therefore, it has been proposed to make the cross-sectional shape of the sound-absorbing panel material simpler. For example, Japanese Patent Application Laid-Open No. 2000-110121 discloses a sound-absorbing material having a cross-sectional shape of “C”. Japanese Laid-Open Patent Publication No. 2001-32223 discloses a sound-absorbing panel material that is formed into a “Z” shape by combining divided louvers having a rectangular cross-sectional shape. These sound-absorbing panel materials are easy to manufacture because the cross-sectional shape of the panel material, which is an element constituting the final shape, is rectangular, and can be stacked in a stable state, so the storage space is reduced. It can be easily handled and transported.
JP 2002-309522 A Japanese Utility Model Publication No. 6-47932 JP 2000-257026 A JP 2000-110121 A JP 2001-32223 A

  However, when the above-mentioned sound absorbing panel material having a cross-sectional shape of a letter C or a letter Z is used, there is an advantage that manufacturing, handling, or conveyance becomes easy, but in the conventional arrangement configuration, it is finally configured. The sound insulation, ventilation and dimming properties of the sound absorbing louver panel were not sufficient.

  Accordingly, an object of the present invention is to provide a sound absorbing louver panel for a vehicle traveling road that is composed of a sound absorbing panel material having a panel material having a simple cross-sectional shape as an element, and is excellent in sound insulation, ventilation, and light control. There is.

The car both travel path for absorbing louver panels that written to the present invention, the upper and lower surfaces a plurality of bridging louvers member crossing a road direction at the opened rectangular frame having a predetermined road longitudinal direction of該矩shape frame The louver members are arranged side by side at intervals, and the louver member includes a horizontal portion formed of first and second sound absorbing panel members arranged substantially horizontally at intervals in the vertical direction, and the first and second It is comprised by the standing part arrange | positioned in the up-down direction, making it closely_contact | adhere to each sound absorption panel in a different surface . Then, the end of the upright portion protrudes at least one above and below the horizontal portion.

  The upright portion may be formed of a third sound absorbing panel material standing substantially vertically, and an end of the third sound absorbing panel material may protrude below the horizontal portion. The first, second, and third sound absorbing panel members are equal in thickness and length, and the upper edge of the side surface of the third sound absorbing panel member is the upper end surface of the third sound absorbing panel member. The second sound absorbing panel material of the third sound absorbing panel material is in close contact with the side surface of the second sound absorbing panel material so as to be flush with the upper surface of the second sound absorbing panel material forming the upper side of the portion. The side surface that is not in close contact may be in close contact with the side surface of the first sound absorbing panel member that forms the lower side of the horizontal portion at a position below the middle. Alternatively, the first and second sound absorbing panel members are equal in thickness and length, and the third sound absorbing panel member is equal in thickness and length to the first and second sound absorbing panel members. The upper end surface of the third sound-absorbing panel member is flush with one side surface of the second sound-absorbing panel member whose one side surface of the third sound-absorbing panel member forms the upper side of the horizontal portion. The side surface of the third sound absorbing panel material that is in close contact with the lower surface of the first sound absorbing panel material is flush with the side surface of the second sound absorbing panel material. You may closely_contact | adhere to the side surface of the 1st sound absorption panel material which makes the lower side of a horizontal part.

  The protruding length of the end of the third sound absorbing panel material may be equal to the thickness. Alternatively, the protruding length of the end of the sound absorbing panel material forming the upright portion satisfies a predetermined formula (Equation 1 or 2) relating to the length and thickness of the sound absorbing panel material and the arrangement interval of the upright portions. It may be.

  The upright portion may be formed of a third sound absorbing panel material that stands substantially vertically, and an end of the third sound absorbing panel material may protrude above the horizontal portion. The first and second sound absorbing panel materials are equal in thickness and length, and the third sound absorbing panel material is equal in thickness and length to the first and second sound absorbing panel materials. The edge of the sound-absorbing panel material forming the upright portion may be protruded above the horizontal portion. The protruding length of the end of the third sound absorbing panel material may be equal to the thickness. Alternatively, the protruding length of the end of the third sound absorbing panel material may satisfy a predetermined expression (Expression 2) regarding the length, thickness, and arrangement interval of the upright portions of the sound absorbing panel material. .

  The upright portion is formed of third and fourth sound absorbing panel materials that stand substantially vertically and are in close contact with each other on the side surface, one lower end protruding below the horizontal portion, and the other upper end is the horizontal portion. It may protrude above. In addition, the lower edge of the side surface of the third sound absorbing panel member is flush with the lower surface of the first sound absorbing panel member that forms the lower side of the horizontal portion. In close contact with the side surface of the first sound absorbing panel member, and the upper edge of the side surface of the fourth sound absorbing panel member is the second edge where the upper end surface of the fourth sound absorbing panel member forms the upper side of the horizontal portion. You may contact | adhere to the side surface of this 2nd sound absorption panel material so that it may become flush with the upper surface of a sound absorption panel material. At this time, the first, second, third and fourth sound absorbing panel materials are equal in thickness and length, and above and below the horizontal portion of the ends of the third and fourth sound absorbing panel materials. The protruding length of each may be equal to the thickness. Alternatively, the first and second sound absorbing panel materials are equal in length, and the third and fourth sound absorbing panel materials are equal in length, and the first, second, third and fourth sound absorbing panel materials are the same. And the protruding lengths of the ends of the third and fourth sound-absorbing panel members to the upper and lower parts of the horizontal portion are the length and thickness of the sound-absorbing panel member and the arrangement interval of the upright portions, respectively. May satisfy a predetermined formula (Formula 3).

According to the vehicle both travel path for absorbing louver panels that written to the present invention, firstly, the ventilation is maintained by a gap of the louver member adjacent. Further, the end of the upright portion protruding to at least one of the upper and lower sides of the horizontal portion of the louver member blocks light from above the louver member and noise from below, and exhibits a light control function and a sound insulation function. That is, light from above the louver member is prevented from directly entering the lower road through the gap of the louver member, and noise generated on the road below the louver member leaks out through the gap of the louver member. To prevent that. Moreover, the louver member is brought into close contact with both the first and second sound absorbing panels and the horizontal portion formed of the first and second sound absorbing panel materials arranged substantially horizontally with a space in the vertical direction. Therefore, even if the cross-sectional shape of the sound-absorbing panel material forming the horizontal portion and the standing portion is simplified, the shape can be maintained so as to maintain the above function. That is, it can be constituted by a sound absorbing panel material having a panel material having a simple cross-sectional shape as an element. Note that light from above the louver member can be blocked by the end of the standing part protruding above and below the horizontal part regardless of the shape of the gap between the louver members. Has the advantage that it is not necessary to consider the direction of travel of the vehicle.

  The direction in which the end of the raised portion of the louver member protrudes may be only above the horizontal portion, only below the horizontal portion, or both. What is necessary is just to determine suitably according to other conditions. When the protruding direction is only above or below the horizontal portion, for example, the upright portion is formed of a single sound absorbing panel material that stands up substantially vertically, and the upper end or the lower end of the sound absorbing panel material is protruded from the horizontal portion. It ’s fine. Further, when the projecting direction is both above and below the horizontal portion, for example, the upright portion is formed of two sound absorbing panel materials that stand substantially vertically and are in close contact with each other on the side surface. What is necessary is just to make one lower end of a sound-absorbing panel material protrude below a horizontal part, and to make the other upper end protrude above a horizontal part. At this time, the thickness and length of the sound-absorbing panel material forming the horizontal portion and the upright portion are standardized, or even when the length is changed, the thickness is adjusted as a reference, thereby reducing the types of sound-absorbing panel materials to be manufactured. , Prevent assembly mistakes.

  In addition, when the thickness and length of the sound absorbing panel material forming the horizontal portion and the standing portion are unified, or the length change standard is the thickness, the protruding length of the end of the sound absorbing panel material forming the standing portion is If the thickness is equal to the thickness of the sound absorbing panel material, sufficient ventilation, light control and sound insulation can be obtained. At this time, the adjustment of the protruding length can be performed by comparison with the thickness of the other sound absorbing panel material, and measurement can be omitted and the construction can be easily performed.

  Furthermore, when the thickness and length of the sound absorbing panel material forming the horizontal portion and the standing portion are unified, or when the length change standard is the thickness, the protruding length of the end of the sound absorbing panel material forming the standing portion is set as follows: Dimmability, although it takes time to adjust during construction if it satisfies the predetermined formula (Formula 1, Formula 2, or Formula 3) regarding the length and thickness of the sound absorbing panel material and the arrangement interval of the upright portions And soundproofing can be improved more.

Figure 1-7 illustrates an embodiment of that written to the present invention car both travel path for sound-absorbing louver panels. FIG. 1 is a cross-sectional perspective view of a main part showing a ceiling of a semi-underground tunnel structure on an expressway to which the sound absorbing louver panel for a vehicle traveling road is applied. FIG. 2 is a longitudinal side view taken along the line II of FIG. FIG. 3 is an enlarged cross-sectional view of a main part schematically showing an arrangement form of each sound absorbing panel material constituting the louver member. FIG. 4 is a cross-sectional perspective view of an essential part of the sound absorbing panel material, partially broken away. FIG. 5 is an enlarged cross-sectional view of the portion where the lower end of the third sound absorbing panel protrudes, showing the difference in the propagation path of the direct sound from the noise generation point. FIG. 6 is an enlarged cross-sectional view of the main part of the sound absorbing panel material, showing the coordinates of the main points of the sound absorbing panel material. FIG. 7 is an enlarged cross-sectional view of the main part of the sound-absorbing panel material, showing the incident path of the direct sunlight from the semi-underground tunnel. In addition, in the cross-sectional views, regarding the cross sections of the sound absorbing panel materials, when it is clear that they are cross sections, the description of hatching may be omitted for clarity of explanation.

  In this embodiment, a sound absorbing louver panel for a vehicle traveling road according to the present invention is applied to a ceiling surface B of a semi-underground tunnel A on an expressway. As shown in FIG. 1, the sound absorbing louver panel 1 for a plurality of vehicle travel paths is formed between a horizontal beam C and a vertical beam D spanned over the tunnel so as to construct a ceiling surface B of the semi-underground tunnel A. Are arranged side by side in the vehicle travel direction X and the vehicle width direction Y.

  The sound-absorbing louver panel 1 includes a plurality of louver members 3 installed in the short side direction in a rectangular frame 2 whose upper and lower surfaces are open, and are arranged and arranged at predetermined intervals in the long side direction of the rectangular frame 2. It has a rectangular shape, and is arranged along the long side direction along the road longitudinal direction X and the short side direction along the road crossing direction Y.

  The louver member 3 includes a horizontal portion 3a formed of first and second sound-absorbing panel members 41, 42 having a thickness t and a length h, which are disposed substantially horizontally with a space in the vertical direction, The upright portion 3b is disposed in the thickness direction (vertical direction) of the rectangular frame 2 in close contact with both the first and second sound absorbing panels 41 and 42. The upright portion 3b is formed of a third sound absorbing panel material 43 that has the same thickness and length as the first and second sound absorbing panel materials 41 and 42 and stands substantially vertically. The upper edge of the side surface of the third sound absorbing panel member 43 is flush with the upper surface of the second sound absorbing panel member 42 that forms the upper side of the horizontal portion 3a. The sound absorbing panel material 42 is in close contact with the side surface 42a. Further, the side surface not in close contact with the second sound absorbing panel member 42 is in close contact with the side surface 41b of the first sound absorbing panel member 41 forming the lower side of the horizontal portion 3a at a position below the middle. And the lower end part of the 3rd sound absorption panel material 43 protrudes below the horizontal part 3a. The sound absorbing panel members 41, 42, and 43 are individually assembled and arranged on the short side inner surface 2 a of the rectangular frame 2 via the bracket 8.

  Each of the sound absorbing panel members 41, 42, 43 includes a rectangular box 5 and a sound absorbing material 6 made of glass wool, rock wool, polyester fiber or the like filled in the rectangular box 5. The rectangular box 5 has a bottomed shape with one end face 5a opened, and the opening face 5a is closed by a perforated plate 7 having a number of punched through holes 7a, and is enclosed in a rectangular cross section. It has become. And the surface of this perforated board 7 is a sound absorption surface for absorbing the noise which generate | occur | produces with driving | running | working of a vehicle. In this specific example, the lower surface 41c of the first sound absorbing panel member 41, the lower surface 42c of the second sound absorbing panel member 42, and the third sound absorbing panel member 43 are in close contact with the second sound absorbing panel. The side surfaces 43c (the right side surface in FIG. 3) are arranged so as to be sound absorbing surfaces.

  In the sound-absorbing louver panel 1 configured with such a louver member 3, when noise from a vehicle traveling in the tunnel A is taken from below between the louver members 3 of the sound-absorbing louver panel 1 that constructs the ceiling surface B, First, it is absorbed by the sound absorbing surface 43c of the third sound absorbing panel member 43 and reflected toward the second sound absorbing panel member 42 side. The reflected noise is absorbed by the sound absorbing surface 42c of the second sound absorbing panel member 42 and reflected toward the first sound absorbing panel member 41 side. Subsequently, the noise is reflected by the first sound absorbing panel material 41, reflected toward the second sound absorbing panel material 42, and absorbed again by the sound absorbing surface 42 c of the second sound absorbing panel material 42. A part of the noise is reflected toward the side surface 43d of the third sound absorbing panel member, and the further reflected noise reaches the outside from above between the louver members 3. Further, the noise in the tunnel A is similarly absorbed by the sound absorbing surface 41 c of the first sound absorbing panel 41.

  Thus, the noise in the tunnel A is absorbed and reflected by the sound absorbing surfaces 41c, 42c, and 43c of the sound absorbing panel members 41, 42, and 43, respectively, and reaches the outside of the tunnel A. Therefore, the noise absorption efficiency Can be further increased, thereby improving the sound insulation performance. At this time, the exhaust gas in the tunnel A similarly reduces the concentration of the exhaust gas released to the outside of the tunnel A because the sound absorbing material 6 constituting each of the sound absorbing panel members 41, 42 and 43 functions as a filter. It becomes possible.

  In addition, since the lower end of the third sound absorbing panel member 43 protrudes, the opening area of the interval between the louver members 3 into which noise enters is substantially reduced as compared with the case where the third sound absorbing panel material 43 does not protrude. The amount of sound leaking to the outside can be reduced and the sound insulation performance can be improved. This effect will be described with reference to FIG. When there is no protrusion (when the protrusion length z is 0), the direct sound from the point Q propagates on the path Sa, whereas from the point Q when the protrusion of the length z exists. Will propagate along the path Sb. That is, the presence of the protrusion with the length z has the same effect as the existence of the virtual wall having the same width as the width k of the cut surface perpendicular to the traveling direction of the noise entering the interval between the louver members 3. Sound transmitted to the outside of the louver panel can be reduced.

  On the other hand, when direct light enters between the louver members 3 from above the sound-absorbing louver panel 1, the direct light is blocked by the lower end of the third sound-absorbing panel member 43 protruding below the horizontal portion 3a and directly into the tunnel A. Is not incident on. For this reason, only light having a property that does not hinder driving is guided to the inside, and the inside of the tunnel A is indirectly illuminated, thereby improving the dimming performance.

  The protruding length z of the lower end of the third sound absorbing panel member 43 protruding below the horizontal portion 3a is determined so as to satisfy Formula 1. These numerical formulas represent the length h of the sound absorbing panel material, the thickness t, and the arrangement interval of the upright portions 3b (from the right surface of the third sound absorbing panel material 43 to the third louver member 3 adjacent to the right direction. The distance between the sound absorbing panel member 43 and the left surface 43d is hereinafter referred to as an internal dimension), and d can be derived as follows.

  As shown in FIG. 6, the lower right end of the third sound absorbing panel member 43 is P, the lower right end of the second sound absorbing panel member 42 is X1, and the upper left end of the first sound absorbing panel member 41 is X2. . Here, P, X1, and X2 shown in FIG. 6 are represented by a two-dimensional coordinate system (X, Z). When P is the origin (0, 0), X1 is shifted from P in the positive direction (right side) of the X axis by the length h of the sound absorbing panel material 42. On the other hand, since it is shifted by ht in the positive direction (upper side) of the Z axis, the coordinates of X1 are represented by (h, ht). Similarly, X2 is in the positive direction (right side) of the X-axis by the amount obtained by subtracting the length h of the sound absorbing panel material 41 from the internal dimension d, and the protrusion amount z and the thickness t of the sound absorbing panel material 41 than P. The position is shifted in the positive direction (upper side) of the Z axis. That is, the coordinates of X2 are represented by (d-h, t + z).

  Next, as shown in FIG. 7, the slope between each point is obtained. In FIG. 7, when the inclination of PX1 and the inclination of PX2 are compared, when the inclination of PX2 is large, the direct light is projected downward by the protrusion length z. It is blocked by the lower end of 43. Here, since the slope of P-X1 is represented by (ht) / h and the slope of P-X2 is represented by (t + z) / (dh), the condition P-X2> P- By applying X1 and rearranging, Formula 1 is obtained.

  In this way, by controlling the protrusion length z based on Formula 1, it is possible to prevent the direct sunlight from seeping into the semi-underground tunnel A. For this reason, direct light does not enter the eyes of the driver, and it is possible to effectively prevent troubles in driving due to sunlight. The protruding length z can be made equal to the thickness t of the sound absorbing panel members 41, 42, and 43. Specific dimensions in this case include, for example, a thickness t of 95 mm and a length h. Is 500 mm and the inner dimension d is 700 mm, it is possible to suppress the incidence of direct light.

8-10 shows another embodiment of a vehicle traveling road sound absorption louver panels that written to the present invention. FIG. 8 is an enlarged cross-sectional view of an essential part schematically showing an arrangement form of the respective sound absorbing panel members constituting the louver member of the vehicle traveling road sound absorbing louver panel. FIG. 9 is an enlarged cross-sectional view of the main part of the sound absorbing panel material showing the coordinates of the main points of the sound absorbing panel material constituting the sound absorbing louver panel for the vehicle traveling road. FIG. 10 is an enlarged cross-sectional view of the main part of the sound-absorbing panel material, showing the incident path of the direct sunlight from the semi-underground tunnel. 8 to 10, parts that are substantially the same as those in the embodiment shown in FIGS. 1 to 7 are given the same reference numerals, and descriptions thereof are omitted.

  In this embodiment, the first and second sound absorbing panel members 41 and 42 have the same thickness t and length h, but the third sound absorbing panel member 43 has the first and second sound absorbing panel members. Although the panel members 41 and 42 and the thickness t are equal, the length is shorter by the thickness, that is, ht. The upper end surface of the third sound-absorbing panel material 43 is arranged such that one side surface of the third sound-absorbing panel material 43 is flush with one side surface 42a of the second sound-absorbing panel material 42. The panel material 42 is in close contact with the lower surface 42c. Further, the side surface of the third sound absorbing panel member 43 that is flush with the side surface 42a of the second sound absorbing panel member 42 is located on the side surface 41b of the first sound absorbing panel member 41 at a position below the middle thereof. It is in close contact.

  Even in this case, the lower end of the third sound absorbing panel material 43 protrudes below the horizontal portion 3a. And this protruding edge part contributes to the improvement of soundproofing and light control property like the above. Note that the protruding length z of the lower end may be equal to the thickness of the sound absorbing panel material as in the above embodiment, but may satisfy Formula 2 different from Formula 1 above. Hereinafter, the method for deriving Formula 2 will be described with reference to FIGS. 9 and 10.

  As in FIG. 6, as shown in FIG. 9, the lower right end of the third sound absorbing panel member 43 is P, the lower right end of the second sound absorbing panel member 42 is X1, and the first sound absorbing panel member 41. Let X2 be the upper left corner of. Here, when P is the origin (0, 0), X1 is shifted in the positive direction (right side) of the X axis from P by the distance obtained by subtracting the thickness t of the third sound absorbing panel material 43 from h. is doing. On the other hand, since it is shifted by ht in the positive direction (upper side) of the Z axis, the coordinates of X1 are represented by (ht, ht). Similarly, X2 is in the positive direction (right side) of the X-axis by the amount obtained by subtracting the length h of the sound absorbing panel material 41 from the internal dimension d, and the protrusion amount z and the thickness t of the sound absorbing panel material 41 than P. The position is shifted in the positive direction (upper side) of the Z axis. That is, the coordinates of X2 are represented by (d-h, t + z).

  Next, as shown in FIG. 10, the inclination between each point is calculated | required. In FIG. 10, when the inclination of PX1 and the inclination of PX2 are compared, when the inclination of PX2 is large, the direct light is projected downward by the protrusion length z. It is blocked by the lower end of 43. Here, the slope of P-X1 is represented by (ht) / (ht), and the slope of P-X2 is represented by (t + z) / (d-h). By arranging for X2> P−X1, the following formula 2 is obtained.

  11 to 14 show still another embodiment of a sound absorbing louver panel for a vehicle traveling path according to the present invention. FIG. 11 is an enlarged cross-sectional view of a main part schematically showing an arrangement form of the respective sound absorbing panel members constituting the louver member of the sound absorbing louver panel for the vehicle traveling road. FIG. 12 is an enlarged cross-sectional view of a portion where the upper end of the third sound absorbing panel protrudes, showing the difference in the propagation path of the direct sound from the opening at the interval of the louver members. FIG. 13: is a principal part expanded sectional view of the sound-absorbing panel material which shows the coordinate of the main point of the sound-absorbing panel material which comprises the sound-absorbing louver panel for the vehicle running road. FIG. 14 is an enlarged cross-sectional view of the main part of the sound-absorbing panel material, showing the incident path of direct sunlight from the sun into the semi-underground tunnel. 11 to 14, the same reference numerals are given to the substantially same parts as those in the embodiment shown in FIGS. 1 to 10, and the description thereof is omitted.

  In this embodiment as well, the first and second sound absorbing panel members 41 and 42 have the same thickness t and length h as in the embodiments of FIGS. The material 43 has the same thickness t as the first and second sound absorbing panel materials 41 and 42, but the length is shorter by the thickness, that is, ht. However, the protruding direction from the horizontal portion 3a of the upright portion 3b is different from that in the above embodiment. That is, the lower end surface of the third sound absorbing panel member 43 is on the upper surface of the first sound absorbing panel member 41 so that one side surface 43c thereof is flush with the one side surface 41b of the first sound absorbing panel member 41. It is in close contact. Further, the side surface 43c of the third sound absorbing panel member 43, which is flush with the side surface 41b of the first sound absorbing panel member 41, is positioned above the middle thereof, and the side surface 42a of the second sound absorbing panel member 42. It is in close contact with. And the upper end of the 3rd sound absorption panel material 43 becomes the form protruded above the horizontal part 3a.

In this way, the upper end of the third sound absorbing panel member 43 protrudes, so that the opening area of the interval between the louver members 3 through which noise leaks is substantially reduced compared to the case where the third sound absorbing panel member 43 does not protrude. However, it is possible to reduce the amount of sound leaking to the outside and improve the sound insulation performance. This effect will be described with reference to FIG. When there is no protrusion (when the protrusion length z is 0), the direct sound from the opening to the point R propagates on the path Sa, whereas the point when the protrusion with the length z exists The direct sound reaching R propagates along the path Sb. That is, the presence of the protrusion having the length z has the same effect as the existence of a virtual wall having the same width as the width k of the cut surface perpendicular to the traveling direction of the noise leaking from the interval between the louver members 3. Sound transmitted to the outside can be reduced.

  On the other hand, the sunlight above the sound absorbing louver panel 1 is blocked by the upper end of the third sound absorbing panel material 43 protruding above the horizontal portion 3a and does not directly enter the tunnel A. For this reason, only light having a property that does not hinder driving is guided to the inside, and the inside of the tunnel A is indirectly illuminated, thereby improving the dimming performance.

  In addition, although the protrusion length z of this upper end may be made equal to the thickness of a sound-absorbing panel material similarly to said embodiment, it is good also as satisfy | filling the said Numerical formula 2. Hereinafter, the method for deriving Formula 2 in this embodiment will be described with reference to FIGS. 13 and 14.

  As shown in FIG. 13, the upper left end of the third sound absorbing panel member 43 is P, the upper left end of the second sound absorbing panel member 42 is X1, and the lower right end of the second sound absorbing panel member 41 is X2. . The directions of the X axis and the Z axis in FIG. 13 are opposite to those in FIGS. Here, when P is the origin (0, 0), X1 is shifted in the positive direction (left side) of the X axis from P by a distance obtained by subtracting the thickness t of the third sound absorbing panel material 43 from h. is doing. On the other hand, since it is shifted by ht in the positive direction (downward) of the Z axis, the coordinates of X1 are represented by (ht, ht). Similarly, X2 is in the positive direction (left side) of the X axis by the amount obtained by subtracting the length h of the second sound absorbing panel material 42 from the internal dimension d, and the protrusion amount z and the second sound absorbing panel material. The position is shifted in the positive direction (downward) of the Z-axis by a thickness t of 42. That is, the coordinates of X2 are represented by (d-h, t + z).

  Next, as shown in FIG. 14, the slope between each point is obtained. In FIG. 14, when the inclination of PX1 and the inclination of PX2 are compared, when the inclination of PX2 is large, the direct light is projected upward by the protrusion length z. 43 is blocked by the upper end of 43. Here, the slope of P-X1 is represented by (ht) / (ht), and the slope of P-X2 is represented by (t + z) / (d-h). By arranging for X2> P−X1, the following formula 2 is obtained.

  15 to 17 show still another embodiment of a sound absorbing louver panel for a vehicle traveling road according to the present invention. FIG. 15 is an enlarged cross-sectional view of a main part schematically showing an arrangement form of each sound absorbing panel member constituting the louver member of the sound absorbing louver panel for the vehicle traveling road. FIG. 16 is an enlarged cross-sectional view of the main part of the sound absorbing panel material showing the coordinates of the main points of the sound absorbing panel material constituting the sound absorbing louver panel for the vehicle traveling road. FIG. 17 is an enlarged cross-sectional view of the main part of the sound-absorbing panel material, showing the incident path of the direct sunlight from the semi-underground tunnel. 15 to 17, the same reference numerals are given to substantially the same parts as those in the embodiment shown in FIGS. 1 to 14, and the description thereof is omitted.

  In this embodiment, the upright part 3b is formed of the third and fourth sound absorbing panel members 43 and 44 that stand substantially vertically and are in close contact with each other on the side surfaces. The first and second sound absorbing panel members 41 and 42, the third and fourth sound absorbing panel members 43 and 44 are equal in length, and the first, second, third and fourth sound absorbing panel members 41, The thickness t of 42, 43, 44 is equal. The lower edge of the side surface of the third sound absorbing panel member 43 is arranged so that the lower end surface of the third sound absorbing panel member 43 is flush with the lower surface 41c of the first sound absorbing panel member 41. The material 41 is in close contact with the side surface 41b. Further, the upper edge of the side surface of the fourth sound absorbing panel member 44 is arranged such that the upper end surface 44a of the fourth sound absorbing panel member 44 is flush with the upper surface of the second sound absorbing panel member 42. The material 42 is in close contact with the side surface 42a. Moreover, the vertical length of the upright portion 3b is equal to the length of the first and second louver panel members.

  In this case, the lower end of the third sound absorbing panel member 43 protrudes below the horizontal portion 3b, and the upper end of the fourth sound absorbing panel member 44 protrudes above the horizontal portion 3b. And this protruding edge part contributes to the improvement of soundproofing and light control property like the above. Note that the protruding length z at the lower end and the upper end may satisfy Formula 3 different from Formula 1 or Formula 2 described above. Hereinafter, the method for deriving Equation 3 will be described with reference to FIGS. 16 and 17.

  As shown in FIG. 16, the lower right end of the fourth sound absorbing panel member 44 is P, the lower right end of the second sound absorbing panel member 42 is X1, the upper left end of the first sound absorbing panel member 41 is X2, and the third sound absorbing member. The upper left end of the panel material 43 is Z1. Here, when P is the origin (0, 0), X1 is shifted in the positive direction (right side) of the X axis from P by the length h of the second sound absorbing panel material. On the other hand, since it is shifted by ht in the positive direction (upper side) of the Z axis, the coordinates of X1 are represented by (h, ht). Similarly, X2 is in the positive direction (right side) of the X-axis by the length obtained by subtracting the length h of the first sound absorbing panel material 41 from the inner dimension d, and the protruding length z and the first sound absorbing panel. It is in a position shifted in the positive direction (upper side) of the Z axis by the thickness t of the material 41. That is, the coordinates of X2 are represented by (d-h, t + z). Further, Z1 is shifted in the positive direction (right side) of the X axis by the inner dimension d from P, and the positive value of the Z axis is increased by the sum h + z of the protruding length z and the length h of the third sound absorbing panel material 43. It is in a position shifted in the direction (upward). That is, the coordinates of Z1 are represented by (d, h + z).

  Next, as shown in FIG. 17, the inclination between each point is obtained. In FIG. 17A, when the inclination of P-X1 is compared with the inclination of P-Z1, when the inclination of P-Z1 is large, the direct light is projected upward by the protrusion length z. The sound absorbing panel member 43 is blocked by the upper end. Here, the slope of P-X1 is represented by (ht) / h, and the slope of P-Z1 is represented by (h + z) / d. Therefore, the condition P-Z1> P-X1 is applied. When arranged, Formula 3 is obtained.

  Similarly, as shown in FIG. 17 (b), when the inclination of X2-X1 is compared with the inclination of X2-Z1, when the inclination of X2-Z1 is large, direct light is projected by the protrusion length z. It will be blocked by the upper end of the third sound absorbing panel member 43 protruding upward. Here, the slope of X2-X1 is represented by (h-2t-z) / (2h-d), and the slope of X2-Y is represented by (ht) / h. If it is arranged to be> X2-X1, rearrangement 3 is obtained.

  In this embodiment, the first, second, third, and fourth sound absorbing panel members 41, 42, 43, 44 are made equal in thickness and length, and the third and fourth sound absorbing panel members 43, 44 are used. The protruding length of the end of the horizontal portion upward and downward may be equal to the thickness of the sound absorbing panel material.

It is a fragmentary cross-sectional perspective view of a ceiling of the semi-underground tunnel structures in highway vehicle travel path for absorbing louver panels that written to the present invention is applied. It is a vertical side view of the sound absorption louver panel in the II line | wire of FIG. It is a principal part expanded sectional view which shows roughly the arrangement | positioning form of each sound absorption panel material which comprises a louver member. It is a principal part section perspective view showing a sound absorption panel material partly broken. It is an expanded sectional view of the part which the lower end of the 3rd sound absorption panel projected showing the difference in the propagation path of the direct sound from the generation point of noise. It is a principal part expanded sectional view of the sound absorption panel material which shows the coordinate of the main point of a sound absorption panel material. It is a principal part expanded sectional view of the sound-absorbing panel material which shows the incident path | route of the direct sunlight of a sun in a semi-underground type tunnel. Other embodiments Ioite, essential schematically showing the arrangement of the acoustical panel material forming the louver member of the same vehicle traveling road sound absorption louver panel of the car both travel path for absorbing louver panels that written to the present invention FIG. It is a principal part expanded sectional view of the sound absorption panel material which shows the coordinate of the main point of the sound absorption panel material which comprises the sound absorption louver panel for the vehicle travel paths. It is a principal part expanded sectional view of the sound-absorbing panel material which shows the incident path | route of the direct sunlight of a sun in a semi-underground type tunnel. In yet another embodiment of the vehicle both travel path for absorbing louver panels that written to the present invention, a main part showing the arrangement of the acoustical panel material forming the louver member of the same vehicle traveling road sound absorption louver panel schematically It is an expanded sectional view. It is an expanded sectional view of the part which the upper end of the 3rd sound absorption panel projected showing the difference in the propagation path of the direct sound from the opening of the interval of a louver member. It is a principal part expanded sectional view of the sound absorption panel material which shows the coordinate of the main point of the sound absorption panel material which comprises the sound absorption louver panel for the vehicle travel paths. It is a principal part expanded sectional view of the sound-absorbing panel material which shows the incident path | route of the direct sunlight of a sun in a semi-underground type tunnel. Further in another embodiment, the vehicle traveling road sound absorption louver main part schematically showing the arrangement of the acoustical panel material forming the louver member of a panel of a car both travel path for absorbing louver panels that written to the present invention It is an expanded sectional view. It is a principal part expanded sectional view of the sound absorption panel material which shows the coordinate of the main point of the sound absorption panel material which comprises the sound absorption louver panel for the vehicle travel paths. It is a principal part expanded sectional view of the sound-absorbing panel material which shows the incident path | route of the direct sunlight of a sun in a semi-underground type tunnel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sound absorption louver panel 2 Rectangular frame 2a Inner surface 3 Louver member 3a Horizontal part 3b Standing part 41 First sound absorption panel material 41b Side surface 41c Lower surface 42 Second sound absorption panel material 42a Side surface 43 Third sound absorption panel material 43a Upper end surface 44 First Four sound absorbing panel members 44a Upper end surface 5 Bottomed box 6 Sound absorbing member 7 Perforated plate 8 Bracket X Road longitudinal direction Y Road crossing direction Z Vertical direction d Arrangement distance t Thickness h Length z Projection length

Claims (15)

A plurality of louver members (3) installed in the road crossing direction (Y) in the rectangular frame (2) whose upper and lower surfaces are open are arranged at predetermined intervals in the road longitudinal direction (X) of the rectangular frame (2). Are assembled and arranged side by side,
The louver member (3) includes a horizontal portion (3a) formed of first and second sound absorbing panel members (41, 42) disposed substantially horizontally at intervals in the vertical direction (Z), and the first louver member (3). The first and second sound-absorbing panel members (41, 42) are composed of upright portions (3b) arranged in the vertical direction in close contact with different surfaces ,
A sound absorbing louver panel (1) for a vehicle travel path, characterized in that an end of the upright portion (3b) protrudes at least one above and below the horizontal portion (3a).   The upright portion (3b) is formed of a third sound absorbing panel material (43) that stands substantially vertically, and an end of the third sound absorbing panel material (43) protrudes below the horizontal portion (3a). The sound absorbing louver panel (1) for a vehicle travel path according to claim 1.   The first, second and third sound absorbing panel members (41, 42, 43) have the same thickness (t) and length (h), and the upper edge of the side surface of the third sound absorbing panel member (43). The upper end surface (43a) of the third sound absorbing panel member (43) is flush with the upper surface of the second sound absorbing panel member (42) forming the upper side of the horizontal portion (3a). The side surface (42a) of the second sound absorbing panel material (42) is in close contact, and the side surface of the third sound absorbing panel material (43) that is not in close contact with the second sound absorbing panel material (42) is below the middle thereof. The sound absorbing louver panel (1) for a vehicle traveling road according to claim 2, wherein the sound absorbing louver panel (1) for a vehicle traveling path is in close contact with a side surface (41b) of a first sound absorbing panel member (41) forming the lower side of the horizontal portion (3a) at a position.   The first and second sound absorbing panel members (41, 42) have the same thickness (t) and length (h), and the third sound absorbing panel member (43) has the first and second sound absorbing panel members. The thickness (t) is equal to the panel material (41, 42) and the length is shorter by the thickness, and the upper end surface of the third sound absorbing panel material (43) is the same as that of the third sound absorbing panel material (43). The bottom surface of the second sound absorbing panel material (42) so that one side surface is flush with one side surface (42a) of the second sound absorbing panel material (42) forming the upper side of the horizontal portion (3a). (42c) is in close contact with the side surface (42a) of the second sound absorbing panel material (42) of the third sound absorbing panel material (43), at a position below its middle, The sound absorbing louver panel (1) for a vehicle traveling path according to claim 2, wherein the sound absorbing louver panel (1) for a vehicle traveling path is in close contact with a side surface (41b) of a first sound absorbing panel member (41) forming the lower side of the horizontal portion (3a).   The sound absorbing louver panel (1) for a vehicle traveling path according to claim 3 or 4, wherein a protruding length (z) of an end of the third sound absorbing panel material (43) is equal to the thickness (t). The protruding length (z) of the end of the third sound absorbing panel material (43) is expressed by Equation 1.

The sound absorbing louver panel (1) for a vehicle traveling path according to claim 3, wherein:   The upright portion (3b) is formed of a third sound absorbing panel material (43) that stands substantially vertically, and an end of the third sound absorbing panel material (43) protrudes above the horizontal portion (3a). The sound absorbing louver panel (1) for a vehicle travel path according to claim 1.   The first and second sound absorbing panel members (41, 42) have the same thickness (t) and length (h), and the third sound absorbing panel member (43) has the first and second sound absorbing panel members. The thickness (t) is equal to the panel material (41, 42) and the length is shorter by the thickness, and the lower end surface of the third sound absorbing panel material (43) is the bottom of the third sound absorbing panel material (43). The first sound absorbing panel member (43c) is flush with one side surface (41b) of the first sound absorbing panel member (41) forming the lower side of the horizontal portion (3a). 41), the side surface (43c) of the third sound absorbing panel material (43) is flush with the side surface (41b) of the first sound absorbing panel material (41) above the middle. The sound absorbing louver panel (1) for a vehicle traveling road according to claim 7, wherein the sound absorbing louver panel (1) for a vehicle traveling path is in close contact with the side surface (42a) of the second sound absorbing panel member (42) forming the upper side of the horizontal portion (3a).   The sound absorbing louver panel (1) for a vehicle traveling path according to claim 8, wherein a protruding length (z) of an end of the third sound absorbing panel member (43) is equal to the thickness (t). The protruding length (z) of the end of the third sound absorbing panel material (43) is expressed by Equation 2.

The sound-absorbing louver panel (1) for a vehicle travel path according to claim 4 or 8, wherein:   The upright portion (3b) is formed of third and fourth sound absorbing panel materials (43, 44) that stand substantially vertically and are in close contact with the side surfaces, while the lower end of (44) is the horizontal portion ( The sound absorbing louver panel (1) for a vehicle traveling path according to claim 1, wherein the sound absorbing louver panel (1) protrudes below 3a) and the upper end of the other (43) protrudes above the horizontal portion (3a).   The first, second, third and fourth sound absorbing panel materials (41, 42, 43, 44) are equal in thickness (t) and length (h), and the third sound absorbing panel material (43) The lower edge of the side surface of the third sound-absorbing panel member (43) is flush with the lower surface (41c) of the first sound-absorbing panel member (41) in which the lower end surface of the third sound-absorbing panel member (43) forms the lower side of the horizontal portion (3a). The first sound absorbing panel material (41) is closely attached to the side surface (41b), the upper edge of the side surface of the fourth sound absorbing panel material (44) is the fourth sound absorbing panel material (44) Side surface (42a) of the second sound absorbing panel member (42) so that the upper end surface (44a) of the second sound absorbing panel member (42) is flush with the upper surface of the second sound absorbing panel member (42) forming the upper side of the horizontal portion (3a). The sound absorbing louver panel (1) for a vehicle traveling path according to claim 11, which is in close contact with the vehicle.   The protruding lengths (z) upward and downward of the horizontal portion (3a) of the ends of the third and fourth sound absorbing panel members (43, 44) are respectively equal to the thickness (t). Item 13. A sound absorbing louver panel (1) for a vehicle travel path according to Item 12.   The lengths (h) of the first and second sound absorbing panel members (41, 42) are equal, and the lengths of the third and fourth sound absorbing panel members (43, 44) are equal. The thicknesses (t) of the second, third and fourth sound absorbing panel members (41, 42, 43, 44) are equal, and the lower edge of the side surface of the third sound absorbing panel member (43) is the third sound absorbing panel member (43). The first sound absorbing panel material (43) so that the lower end surface of the sound absorbing panel material (43) is flush with the lower surface (41c) of the first sound absorbing panel material (41) forming the lower side of the horizontal portion (3b). (41) is in close contact with the side surface (41b), the upper edge of the side surface of the fourth sound absorbing panel material (44), the upper end surface (44a) of the fourth sound absorbing panel material (44) is the horizontal portion ( The intimate contact with the side surface (42a) of the second sound absorbing panel material (42) so as to be flush with the upper surface of the second sound absorbing panel material (42) forming the upper side of 3a). Sound-absorbing louver panel (1). The vertical length of the upright portion (3b) is equal to the length (h) of the first and second louver panel members (41, 42), and the third and fourth sound absorbing panel members (43, 44) The protruding lengths (z) upward and downward of the horizontal portion (3a) are equal, and Equation 3

The sound absorbing louver panel (1) for a vehicle travel path according to claim 14, wherein:

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