soundproof box

Abstract

To provide a soundproof box which makes a high temperature exhaust gas discharged from a power generator less likely to fill the interior excessively without depending on electric power consumption equipment such as an air introduction or air discharge fan.SOLUTION: A soundproof box may house a portable power generator G which is driven by an engine in a housing space S of a box body K, and temperature rise inhibition means N which may inhibit temperature rise is disposed in a second space portion s2. The temperature rise inhibition means N includes an exhaust gas passage tw, through which exhaust gas may pass, and has a tip opening n2 which may discharge exhaust gas. The tip opening n2 is set so as to be located near an exhaust air lead-out hole J of the box body K.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to a soundproof box that suppresses noise from a small generator. [Background technology]

[0002] Conventionally, various soundproof boxes have been developed to suppress noise from small generators.

[0003] Small generators generate electricity by burning gasoline to run an engine, which inevitably results in high-temperature exhaust gas being blown out in a specific direction.

[0004] Conventional soundproof boxes are provided with a travel barrier to prevent exhaust gas from being blown out. The exhaust gas that is blocked by the travel barrier in the blowing direction passes through a predetermined exhaust gas flow passage before being discharged to the outside (see, for example, Patent Document 1).

[0005] However, in a soundproof box having such a configuration, the exhaust gas cannot flow properly through the predetermined exhaust gas flow passage, and it is difficult for the exhaust gas to be smoothly discharged to the outside.

[0006] As a result, in conventional soundproof boxes, the internal space becomes overheated due to the high-temperature exhaust gas filling the box, which can lead to various problems, such as making the box unable to be carried by hand, or destroying or deforming the walls that make up the soundproof box.

[0007] It is clear that if the soundproof box is additionally equipped with power-consuming equipment such as an air intake or exhaust fan, the high-temperature exhaust gas can be efficiently discharged to the outside. However, if power-consuming equipment such as an air intake or exhaust fan is provided in the soundproof box, this is inherently undesirable in that it wastes the power of the generator. In addition, the soundproof box as a whole becomes too heavy, which can cause another problem of making it difficult to carry around. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Patent No. 5591781 Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention has been made with the above-mentioned circumstances in mind, and aims to provide a soundproof box that is designed to prevent excessive filling of the interior with high-temperature exhaust gas emitted from a generator, without relying on power-consuming equipment such as air intake or exhaust fans. [Means for solving the problem]

[0010] That is, the present invention has the following configuration.

[0011] The invention described in claim 1 is a soundproof box comprising a box body having a bottom wall, a peripheral wall erected from the peripheral edge of the bottom wall, and a top wall disposed on top of the peripheral wall, and capable of accommodating a portable generator driven by an engine in the accommodation space of the box body, wherein a partition is provided to separate a first space portion which constitutes the accommodation space and faces an air intake section of the generator, from a second space portion which constitutes the accommodation space and faces an exhaust gas discharge section of the generator, and a partition is provided on the peripheral wall facing the second space portion to separate the exhaust gas discharged from the exhaust gas discharge section. an exhaust outlet hole capable of discharging exhaust gas into an external space; a temperature rise suppression means capable of suppressing a temperature rise in the second space portion is disposed in the second space portion; the temperature rise suppression means has an exhaust gas passage through which the exhaust gas can pass, a base end connection part connected to the exhaust gas discharge part so as to introduce the exhaust gas into the exhaust gas passage, and a tip end opening part capable of discharging the exhaust gas that has passed through the exhaust gas passage; the tip end opening part is set to be located in the vicinity of the exhaust outlet hole. the box body comprises a lower box component that is open upward, and an upper box component that is open downward and is supported by the lower box component, the lower box component having a rectangular shape and comprising the bottom wall on which the generator is placed, and a lower peripheral wall that forms a part of the peripheral wall and is provided upright integrally from the peripheral edge of the bottom wall, the upper box component having the top wall that is approximately the same size as the bottom wall, and an upper peripheral wall that forms a part of the peripheral wall and is provided downright from the peripheral edge of the top wall, the lower edge of which abuts against the upper edge of the lower peripheral wall, one end of the lower peripheral wall of the lower box component and one end of the upper peripheral wall of the upper box component are connected via a hinge, and the lower box component and the upper box component are each configured to be able to take an open position, and the vertical dimension of the upper peripheral wall of the upper box component is set larger than the vertical dimension of the lower peripheral wall of the lower box component. It is a soundproof box.

[0012] A second aspect of the present invention is the soundproof box according to the first aspect, wherein the temperature rise suppression means includes an exhaust silencer for suppressing noise that may occur in the exhaust gas discharge portion.

[0013] The invention described in claim 3 is a soundproof box described in claim 1 or 2, in which the temperature rise suppression means is equipped with a flow promotion mechanism that promotes the flow of the exhaust gas discharged from the tip opening.

[0014] The invention described in claim 4 is a soundproof box described in claim 1, in which the temperature rise suppression means is provided with an exhaust silencer on the upstream side for suppressing noise that may occur in the exhaust gas discharge section, and a flow promotion mechanism on the downstream side for promoting the flow of the exhaust gas discharged from the tip opening, and the exhaust gas passage is arranged to coincide with the respective axes of the exhaust silencer and flow promotion mechanism.

[0017] Claim 5 The invention described in claims 1, 2 and 3 is characterized in that an external air introduction hole that can communicate between an external space and the first space is provided in the peripheral wall facing the first space. or 4 is a soundproof box.

[0018] Claim 6 The invention described in claims 1, 2, 3, and 4 is characterized in that the bottom wall, the peripheral wall, the top wall, and the partition wall are configured to include lightweight rigid plastic plates. or 5 is a soundproof box. [Effects of the Invention]

[0019] As described above, according to the present invention, it is possible to provide a soundproof box that is configured so that the high-temperature exhaust gas emitted from the generator does not easily fill the inside of the box excessively, without relying on power-consuming equipment such as an air intake or exhaust fan. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a perspective view showing an embodiment of the present invention; [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] 7 is a schematic cross-sectional view taken along line XX in FIG. 6. [Figure 8] 7 is a schematic end view taken along line YY in FIG. 6. [Figure 9] FIG. 6 is a schematic end view corresponding to line ZZ in FIG. 5. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, one embodiment of the present invention will be described with reference to FIGS.

[0022] In this embodiment, the present invention is applied to a portable soundproof box that is mainly used outdoors.

[0023] The soundproof box comprises a box body K having a bottom wall 1, a peripheral wall E erected from the peripheral edge of the bottom wall 1, and a top wall 5 disposed on top of the peripheral wall E. The soundproof box is configured so that a portable generator G driven by an engine can be housed inside the box body K, i.e., in the housing space S.

[0024] The generator G has a known configuration that burns gasoline to operate an engine and generate electricity. Therefore, detailed description of the generator G will be omitted and only a schematic representation is shown in the drawings. The soundproof box of this embodiment is equipped with a generator G that has an air intake section g1 at its front end and an exhaust gas discharge section g2 at its rear end. Adjacent to the exhaust gas discharge section g2 is a warm air discharge section g4 that discharges warm air after cooling the engine with an internal fan (not shown).

[0025] The soundproof box is provided with a partition wall C to separate a first space portion s1 which forms the storage space S and faces the air intake section g1 of the generator G, from a second space portion s2 which forms the storage space S and faces the exhaust gas discharge section g2 of the generator G.

[0026] Various materials with excellent heat resistance and soundproofing properties can be used for the bottom wall 1, the peripheral wall E, the top wall 5, and the partition C. The bottom wall 1, the peripheral wall E, the top wall 5, and the partition C can be made of a material that contributes to weight reduction while ensuring a certain level of rigidity, for example, a lightweight rigid plastic plate.

[0027] In the soundproof box of this embodiment, an exhaust outlet hole J is provided in the rear wall 3 of the peripheral wall E facing the second space portion s2, which is capable of discharging the exhaust gas discharged from the exhaust gas discharge portion g2 of the generator G to the outside space. Further, a temperature rise suppression means N is disposed in the second space portion s2, which is capable of suppressing a temperature rise in the second space portion s2.

[0028] The soundproof box of this embodiment will be described in detail below.

[0029] <<Soundproof box body K>> The soundproof box body K is trunk-box shaped and includes a lower box component A that opens upward and an upper box component D that opens downward and is supported by the lower box component A.

[0030] The soundproof box body K is designed to accommodate a portable generator G driven by an engine in the internal storage space S formed by the lower box component A and the upper box component D.

[0031] The soundproof box body K is configured to be capable of adopting a basic position (L) in which the upper box component D is supported by the lower box component A, closing the storage space S, and an open position (M) in which the lower box component A and the upper box component D are each placed on a support surface such as the ground, opening the internal space.

[0032] The accommodation space S of the soundproof box body K is divided into a first space portion s1 located on the front side and a second space portion s2 located on the rear side by a partition wall C. That is, in the basic position (L), the accommodation space S of the soundproof box body K can be partitioned almost without gaps by the partition wall C and the auxiliary partition wall CH that can close the gap into the first space portion s1, which is the space portion where the air intake portion g1 of the generator G and the gasoline tank (not shown) are located, and the second space portion s2, which is the space portion where the exhaust gas discharge portion g2 of the generator G is located.

[0033] First, the lower box component A that constitutes the soundproof box body K will be described.

[0034] <<Lower box component A>> The lower box component A is rectangular, i.e., a rectangular shape extending in the front-to-rear direction, and comprises a bottom wall 1 on which the generator G is placed, a lower peripheral wall B which forms part of the peripheral wall E and is erected integrally from the peripheral portion of the bottom wall 1, i.e., the front edge, rear edge, and left and right side edges, and a partition C which is erected in the middle of the front-to-rear direction of the bottom wall 1 so as to separate a first space portion s1 which forms the storage space S and in which the air intake portion g1 of the generator G is located, from a second space portion s2 which forms the storage space S and in which the exhaust gas discharge portion g2 of the generator G is located.

[0035] <Bottom Wall 1> The bottom wall 1 is a rectangular plate located below the generator G. The bottom wall 1 is a plate with a certain degree of rigidity, and can be made by stacking one or more hollow plastic plates, for example.

[0036] That is, the bottom wall 1 can be made of a plastic hollow board (air bubble board) with sound absorbing properties, as disclosed in, for example, Japanese Patent No. 6478471. Similarly, the other walls, namely, the peripheral wall E, the top wall 5, the partition wall C, and the support wall W, can also be made of a plastic hollow board (air bubble board) with sound absorbing properties.

[0037] The bottom wall 1 is formed with a fitting hole 11 for preventing displacement to avoid a leg (not shown) provided at the lower end of the generator G.

[0038] The generator G is fastened to the bottom wall 1 by a fastening means such as a belt (not shown). The bottom wall 1 is formed with a notched hole or notch (not shown) for positioning the fastening means such as a belt, as needed.

[0039] Needless to say, the configuration of the bottom wall 1 can be any suitable form. For example, a plate-shaped insulating foam material, vibration-proof sheet, glass wool material, etc. may be interposed between multiple plastic hollow plates, or insulating foam material, vibration-proof sheet, glass wool material, etc. may be used instead of the plastic hollow plates.

[0040] Furthermore, it goes without saying that sound absorbing materials, buffer materials, heat insulating materials, and positioning members for engaging with the generator G may be provided on the bottom wall 1 in addition to those described above.

[0041] The inner surface of the rear part of the bottom wall 1 faces the second space portion s2, which is likely to become hot due to the exhaust gas discharged from the exhaust gas discharge portion g2 of the generator G, so the inner surface may be aluminum laminated.

[0042] A partition wall C is erected at the rear of the bottom wall 1. The partition wall C will be described in detail later.

[0043] <Lower peripheral wall B> The lower peripheral wall B constitutes the lower part of the peripheral wall E. The lower peripheral wall B includes a lower front wall portion 21 extending upward from the front edge of the bottom wall 1 in a direction perpendicular to the bottom wall 1, a lower rear wall portion 31 extending upward from the rear edge of the bottom wall 1 in a direction perpendicular to the bottom wall 1, and left and right lower wall portions 41 extending upward from the left and right side edges of the bottom wall 1 in a direction perpendicular to the bottom wall 1.

[0044] <Lower front wall part 21 (lower peripheral wall B)> The lower front wall portion 21 constitutes the front wall 2 and is a rectangular plate located in front of the generator G. The lower front wall portion 21 is a plate-like portion having a certain degree of rigidity, and can be made of, for example, one or more laminated hollow plastic plates. It goes without saying that the configuration of the lower front wall portion 21 can be any suitable configuration.

[0045] The lower front wall portion 21 of the lower box component A has a wiring outlet hole P in the center in the left-right direction through which wiring such as a power cord (not shown) connected to the generator G can be pulled out in order to use the electricity obtained from the generator G.

[0046] <Lower rear wall section 31 (lower peripheral wall B)> The lower rear wall 31 constitutes the rear wall 3 and is a rectangular plate located behind the generator G. The lower rear wall 31 is a plate with a certain degree of rigidity, and can be made of, for example, one or more laminated hollow plastic plates. Needless to say, the configuration of the lower rear wall 31 can be any suitable configuration.

[0047] The inner surface of the lower rear wall portion 31 faces the second space portion s2, which is likely to become hot due to the exhaust gas discharged from the exhaust gas discharge portion g2 of the generator G, so the inner surface may be aluminum laminated.

[0048] <Lower wall portion 41 (lower peripheral wall B)> The lower wall portions 41 constitute the side walls 4 and are rectangular plates located on both the left and right sides of the generator G. The lower wall portions 41 are plate-shaped with a certain degree of rigidity, and can be made by laminating one or more hollow plastic plates, for example. Needless to say, the configuration of the lower wall portions 41 can be any suitable configuration.

[0049] The lower wall portion 41 has a portion facing the second space portion s2, which is likely to become hot due to the exhaust gas discharged from the exhaust gas discharge portion g2 of the generator G, so aluminum lamination may be applied to the inner surface of that portion.

[0050] The bottom wall 1, the lower front wall portion 21, the lower rear wall portion 31, and the lower side wall portion 41 are integrated together using an aluminum frame I, which is a connecting member.

[0051] <Bulkhead C> The partition C is a wall extending in the vertical direction so as to serve as the main separating portion between a first space portion s1, which is the space in which the air intake portion g1 of the generator G is located, and a second space portion s2, which is the space in which the exhaust gas discharge portion g2 of the generator G is located.

[0052] The partition wall C is erected so as to avoid an exhaust gas discharge portion g2 of the generator G mounted on the bottom wall 1 and a warm air discharge portion g4 that discharges warm air after cooling the engine.

[0053] More specifically, a substantially rectangular communication hole c1 is formed in the center of the partition C in the vertical and horizontal directions. The exhaust gas discharge section g2 and the warm air discharge section g4 of the generator G are configured to be able to face the second space portion s2 through the communication hole c1 of the partition C.

[0054] A seal material SL having cushioning properties is provided on the peripheral edge of the communication hole c1 of the partition C on the generator G side to prevent a gap from being formed between the partition C and the generator G.

[0055] The left and right sides of the partition C are connected to left and right support walls W erected on the bottom wall 1. The left and right support walls W extend in a direction substantially perpendicular to the partition C, i.e., in the front-to-rear direction. The left and right support walls W are fan-shaped so as to avoid interference with the upper box component D, which opens and closes via a damper hinge H.

[0056] The left and right side portions of the partition C are connected to the front ends of the left and right support walls W. The partition C is supported by the left and right support walls W and is held in a position that is slightly tilted forward toward the generator G. The partition C is tilted forward toward the generator G in order to appropriately position the exhaust gas discharge portion g2 and warm air discharge portion g4 of the generator G with respect to the communication hole c1 of the partition C.

[0057] The partition wall C and the support wall W are plate-like members having a certain degree of rigidity, and may be formed by laminating one or more hollow plastic plates, for example.

[0058] Needless to say, the configuration of the partition wall C and the support wall W can be any suitable form. For example, a plate-shaped insulating foam material, vibration-proof sheet, glass wool material, etc. may be interposed between multiple plastic hollow plates, or insulating foam material, vibration-proof sheet, glass wool material, etc. may be used instead of the plastic hollow plates.

[0059] Furthermore, it goes without saying that sound absorbing materials, buffer materials, heat insulating materials, and positioning members that engage with the generator G may be provided on the partition walls C and support walls W in addition to those described above.

[0060] Since the partition wall C and the support wall W have a portion facing the second space portion s2 which is likely to become hot due to the exhaust gas discharged from the exhaust gas discharge section g2 of the generator G, an aluminum laminate may be applied to the inner surface of that portion.

[0061] When the soundproof box body K is in the basic position (L), an auxiliary partition CH made of insulating foam material and having cushioning properties is interposed between the partition C and the top wall 5.

[0062] The auxiliary partition CH is disposed between the upper edge of the partition C and the lower surface of the top wall 5, thereby minimizing the occurrence of gaps and effectively separating the first space portion s1 from the second space portion s2. In this embodiment, the auxiliary partition CH is attached to the lower surface of the top wall 5.

[0063] Next, we will explain the upper box component D that constitutes the soundproof box. The upper box component D has a downward box shape and can function as an upper lid that can close the lower box component A.

[0064] <<Upper box component D>> The upper box component D is rectangular, i.e., rectangular in shape with its longitudinal axis extending in the front-to-back direction, and is provided with a top wall 5 that is approximately the same size as the bottom wall 1, and an upper peripheral wall F that forms part of the peripheral wall E and is integrally suspended from the peripheral portions of the top wall 5, i.e., the front edge, rear edge, and left and right side edges, with its lower edge fe abutting the upper edge be of the lower peripheral wall B.

[0065] <Ceiling Wall 5> The top wall 5 is a rectangular plate located above the generator G. The top wall 5 is a plate with a certain degree of rigidity, and can be made by laminating one or more hollow plastic plates, for example. It goes without saying that the top wall 5 can be configured in any suitable manner.

[0066] The top wall 5 is provided with a handle T at approximately the center in the left-right and front-rear directions, which is used when moving the soundproof box.

[0067] An auxiliary partition wall CH made of a heat insulating foam material is provided on the lower surface of the top wall 5 to cooperate with the partition wall C to separate the first space portion s1 from the second space portion s2.

[0068] <Top wall F> The upper peripheral wall F constitutes the upper part of the peripheral wall E. The upper peripheral wall F includes an upper front wall portion 22 extending downward from the front edge of the top wall 5, perpendicular to the top wall 5, an upper rear wall portion 32 extending downward from the rear edge of the top wall 5, and left and right upper wall portions 42 extending upward from the left and right side edges of the top wall 5, perpendicular to the top wall 5.

[0069] <Upper front wall 22 (upper peripheral wall F)> The upper front wall portion 22 constitutes the front wall 2 and is a rectangular plate located in front of the generator G. The upper front wall portion 22 is a plate-like portion having a certain degree of rigidity, and can be made of, for example, one or more laminated hollow plastic plates. It goes without saying that the upper front wall portion 22 can be configured in any suitable manner.

[0070] <Upper rear wall section 32 (upper peripheral wall F)> The upper rear wall 32 constitutes the rear wall 3 and is a rectangular plate located behind the generator G. The upper rear wall 32 is a plate with a certain degree of rigidity, and can be made of, for example, one or more laminated hollow plastic plates. It goes without saying that the upper rear wall 32 can be configured in any suitable manner.

[0071] The inner surface of the upper rear wall portion 32 faces the second space portion s2, which is likely to become hot due to the exhaust gas discharged from the exhaust gas discharge portion g2 of the generator G, so the inner surface may be aluminum laminated.

[0072] An exhaust outlet hole J is provided in the center of the upper rear wall portion 32 in the left-right direction, through which exhaust gas discharged from the exhaust gas discharge portion g2 of the generator G can be discharged to the outside space. The exhaust outlet hole J has a substantially rectangular shape.

[0073] <Upper wall portion 42 (upper peripheral wall F)> The upper wall portions 42 are rectangular plates located on both the left and right sides of the generator G. The upper wall portions 42 are plate-shaped with a certain degree of rigidity, and may be made of, for example, one or more laminated hollow plastic plates. It goes without saying that the upper wall portions 42 may have any suitable configuration.

[0074] The upper wall portion 42 has a portion facing the second space portion s2, which is likely to become hot due to the exhaust gas discharged from the exhaust gas discharge portion g2 of the generator G, so aluminum lamination may be applied to the inner surface of that portion.

[0075] An external air inlet hole U for introducing air from the external space into the interior is provided in a portion of the upper wall portion 42 facing the first space portion s1. The external air inlet hole U has a substantially rectangular shape and is provided in each of the left and right upper wall portions 42.

[0076] The above-mentioned top wall 5, upper front wall portion 22, upper rear wall portion 32, and upper side wall portion 42 are integrated together using an aluminum frame I, which is a connecting member.

[0077] One end of the lower peripheral wall B of the lower box component A, i.e., the upper end of the lower front wall portion 21, and one end of the upper peripheral wall F of the upper box component D, i.e., the lower end of the upper front wall portion 22, are connected via a damper hinge H. In other words, the upper box component D is supported rotatably with respect to the lower box component A so that the storage space S can be opened and closed.

[0078] In addition, as shown in Figure 2, the box body K of this embodiment is configured so that the lower box component A and the upper box component D can each take an open position (M) in which they are open to the top or front, in order to make it easier to set up the generator G.

[0079] The upper box component D of the soundproof box can be fixed to the lower box component A with a lock when in the basic position (L).

[0080] <<Temperature rise suppression means N>> The temperature rise suppression means N is made up of multiple cylindrical members of different diameters connected together with their axial centers js aligned. The temperature rise suppression means N has an exhaust gas passage tw inside through which exhaust gas can pass. The temperature rise suppression means N is attached to the generator G and disposed in the second space portion s2 of the box body K.

[0081] The temperature rise suppression means N is configured to be associated with the exhaust gas discharge section g2, which has a particular effect on the temperature rise of the second spatial portion s2, of the exhaust gas discharge section g2 and the warm air discharge section g4 in the generator G, so that high-temperature exhaust gas can be actively discharged to the outside through the exhaust outlet hole J.

[0082] In this embodiment, the temperature rise suppression means N is equipped with an exhaust silencer Q for suppressing noise that may occur in the exhaust gas discharge section g2, and is also equipped with a flow promotion mechanism R for promoting the flow of exhaust gas discharged from the tip opening n2. The exhaust gas passage tw is provided so as to coincide with the axis js of the exhaust silencer Q and the flow promoting mechanism R.

[0083] The temperature rise suppression means N has a base end connection portion n1 connected to the exhaust gas discharge portion g2 so that the exhaust gas of the generator G can be introduced into the exhaust gas passage tw, and has a tip opening portion n2 that can discharge the exhaust gas that has passed through the exhaust gas passage tw.

[0084] The base end connection portion n1 is provided on a cylindrical metallic base end pipe material v1. The base end connection portion n1 is sized so that it can be fitted into an exhaust gas discharge portion g2 formed in the generator G.

[0085] The tip opening n2 is provided in a cylindrical metal tip pipe member v2. The tip opening n2 is set to be located near the exhaust guide hole J in the box body K.

[0086] In order to prevent high-temperature exhaust gas discharged from the generator G from accumulating in the second spatial portion s2, it is desirable to position the tip opening n2 at a distance of 10 cm or less from the exhaust outlet hole J. In this embodiment, the tip opening n2 of the temperature rise suppression means N is set to be positioned at a distance of 5 cm or less from the exhaust outlet hole J of the soundproof box K.

[0087] <Exhaust Silencer Q> The exhaust silencer Q comprises a metal case body q1 connected to the rear of a base pipe material v1 extending in the longitudinal direction, with the axis js aligned with the rear of the base pipe material v1, and glass wool q2, a non-flammable fiber material, arranged inside the case body q1.

[0088] The case body q1 includes a cylindrical portion q11 having a larger diameter than the base-end pipe member v1 and extending in the front-to-rear direction, a front end surface portion q12 provided at the front end of the cylindrical portion q11 and closing the portion located outside the base-end pipe member v1, and a rear end surface portion q13 provided at the rear end of the cylindrical portion q11 and closing the portion located outside the intermediate pipe member v3. Inside the case body q1, a coil spring member q3 is disposed, connecting the base-end pipe member v1 and the intermediate pipe member v3.

[0089] <Flow promoting means R> The flow promoting means R is disposed downstream of the exhaust silencer Q.

[0090] The flow promotion mechanism R comprises an intermediate pipe material v3 having a smaller diameter than the case body q1 and connected to the rear part of the case body q1 with its axis js aligned, a tip pipe material v2 having a larger diameter than the intermediate pipe material v3 and arranged at the rear part of the intermediate pipe material v3 with its axis js aligned, and a screw member nj serving as a connecting mechanism that connects the intermediate pipe material v3 and the tip pipe material v2 while forming an air flow passage rt between the tip end portion of the intermediate pipe material v3 and the rear end portion of the tip pipe material v2.

[0091] The tip opening n2 of the tip pipe member v2 is located downstream of the tip opening v31 of the intermediate pipe member v3. The rear end opening v21 of the tip pipe member v2 is open to the second spatial portion s2.

[0092] The flow promoting means R is configured to circulate the air in the second spatial portion s2 from the rear end opening v21 through the air flow passage rt to the front end opening n2 in accordance with the traveling direction of the exhaust gas flowing through the exhaust gas passage tw. As a result, the flow of the exhaust gas is assisted by the air flowing through the air flow passage rt, making it easier for the exhaust gas to be discharged to the outside through the front end opening n2.

[0093] As described above, the soundproof box of this embodiment comprises a box body K having a bottom wall 1, a peripheral wall E erected from the peripheral edge of the bottom wall 1, and a top wall 5 arranged on top of the peripheral wall E.

[0094] A portable generator G driven by an engine can be accommodated in the accommodation space S of the box body K. The soundproof box is provided with a partition wall C that separates a first space portion s1 that constitutes the accommodation space S and faces the air intake portion g1 of the generator G, from a second space portion s2 that constitutes the accommodation space S and faces the exhaust gas discharge portion g2 of the generator G.

[0095] An exhaust outlet hole J is provided in the peripheral wall E facing the second spatial portion s2, which can discharge the exhaust gas discharged from the exhaust gas discharge section g2 to the external space, and a temperature rise suppression means N is arranged in the second spatial portion s2, which can suppress a temperature rise in the second spatial portion s2.

[0096] The temperature rise suppression means N is provided with an exhaust gas passage tw inside through which exhaust gas can pass, has a base end connection portion n1 connected to an exhaust gas discharge portion g2 so as to be able to introduce exhaust gas into the exhaust gas passage tw, and has a tip opening n2 which can discharge exhaust gas that has passed through the exhaust gas passage tw, and the tip opening n2 is set to be located in the vicinity of the exhaust outlet hole J.

[0097] Therefore, in this embodiment, it is possible to provide a soundproof box that is configured to prevent excessive filling of the interior with high-temperature exhaust gas emitted from the generator G, without relying on power-consuming equipment such as air intake or air exhaust fans, i.e., without installing power-consuming equipment such as air intake or air exhaust fans.

[0098] In other words, since the tip opening n2 of the temperature rise suppression means N is located near the exhaust outlet hole J provided in the soundproof box main body K, it is possible to prevent exhaust gas, which becomes extremely hot, from remaining inside the soundproof box main body K as much as possible.

[0099] The temperature rise suppression means N is provided with an exhaust silencer Q for suppressing noise that may occur in the exhaust gas discharge part g2.

[0100] Therefore, even if the tip opening n2 is located near the exhaust outlet hole J, the original purpose of the soundproof box, namely, to adequately prevent noise generated by the generator G, is not compromised.

[0101] The temperature rise suppression means N is provided with a flow promoting mechanism R that promotes the flow of exhaust gas discharged from the tip opening n2.

[0102] This encourages the high-temperature exhaust gas to be discharged to the outside through the exhaust outlet hole J, and effectively prevents the temperature inside the soundproof box from rising too high.

[0103] The temperature rise suppression means N is provided with an exhaust gas passage tw aligned with the axis js of the exhaust silencer Q and the flow promoting mechanism R.

[0104] Therefore, it is possible to suppress noise and promote the flow of exhaust gas to the outside, while suitably suppressing the temperature rise in the internal space of the soundproof box.

[0105] The box body K comprises a lower box component A that opens upward and an upper box component D that opens downward and is supported by the lower box component A.

[0106] The lower box component A has a rectangular bottom wall 1 on which the generator G is placed, and a lower peripheral wall B that forms part of the peripheral wall E and is erected integrally from the peripheral edge of the bottom wall 1. The upper box component D has a top wall 5 that is approximately the same size as the bottom wall 1, and an upper peripheral wall F that forms part of the peripheral wall E and is erected integrally from the peripheral edge of the top wall 5, with its lower edge fe abutting against the upper edge be of the lower peripheral wall B.

[0107] Therefore, a suitable configuration can be adopted that allows the generator G to be set flexibly.

[0108] One end of the lower peripheral wall B in the lower box component A and one end of the upper peripheral wall F in the upper box component D are connected via a damper hinge H, and the lower box component A and the upper box component D are each configured to be able to take an open position (M).

[0109] Therefore, by simply rotating the upper box component D, the storage space S can be easily placed in the open position (M) where it is open.

[0110] An external air introduction hole U that can communicate between the external space and the first space portion s1 is provided in the peripheral wall E facing the first space portion s1.

[0111] Therefore, air for operating the generator G can be easily introduced into the first spatial portion s1 through the external air introduction hole U.

[0112] The bottom wall 1, the peripheral wall E, the top wall 5, and the partition wall C are configured to include lightweight rigid plastic plates.

[0113] Therefore, the soundproof box of this embodiment has excellent design freedom to achieve a lightweight design that is suitable for portability.

[0114] The present invention is not limited to the above-described embodiment.

[0116] The partition wall may be any wall that is capable of separating the first space portion from the second space portion, and its specific configuration is not limited to that shown in the above-described embodiment.

[0117] The exhaust outlet holes may be provided in the peripheral wall, and are not limited to those provided in the rear wall as shown in the above-described embodiment.

[0118] The temperature rise suppression means may be any means having an exhaust gas passage, a base end connection portion, and a tip opening portion located near the exhaust outlet hole, and the specific configuration may be any appropriate one.

[0119] For example, the temperature rise suppression means may not include an exhaust silencer or a flow promoting mechanism.

[0120] The external air introduction holes may be provided on the peripheral wall facing the first space portion, and are not limited to those provided on the left and right side walls as in the above-described embodiment.

[0122] Of course, the handles may be provided at appropriate locations on the outer surfaces of the upper box component and the lower box component.

[0123] The soundproof box may be configured in any way to supply electricity generated by the generator, as long as it can obtain electricity from the generator housed inside. For example, the soundproof box may have an outlet provided on the peripheral wall thereof.

[0124] The wall material that makes up the box body may be any material that can provide sound absorption and heat insulation. For example, in addition to the glass wool and glass cloth mentioned above, rock wool or other non-flammable cloth may also be used.

[0125] Furthermore, the specific configuration of each part is not limited to the above embodiment, and various modifications are possible within the scope of the present invention. [Explanation of symbols]

[0126] K...Box body S...Storage space G...Generator s1...first spatial part s2: Second spatial section C…Bulkhead J...Exhaust outlet hole N...Temperature rise suppression means

Claims

1. A soundproof box is provided with a box body having a bottom wall, a peripheral wall erected from the peripheral edge of the bottom wall, and a top wall disposed on top of the peripheral wall, and the storage space of the box body is adapted to store a portable generator driven by an engine, a partition wall is provided to separate a first space portion that forms the accommodation space and faces an air intake portion of the generator from a second space portion that forms the accommodation space and faces an exhaust gas discharge portion of the generator, an exhaust outlet hole that can discharge the exhaust gas discharged from the exhaust gas discharge portion to an external space is provided in the peripheral wall facing the second space portion, a temperature rise suppression means capable of suppressing a temperature rise in the second space portion is disposed in the second space portion, the temperature rise suppression means is provided with an exhaust gas passage therein through which the exhaust gas can pass, has a base end connection part connected to the exhaust gas discharge part so as to be able to introduce the exhaust gas into the exhaust gas passage, and has a tip opening part through which the exhaust gas that has passed through the exhaust gas passage can be discharged, The tip opening is set to be located near the exhaust outlet hole, The box body comprises a lower box component part that opens upward, and an upper box component part that opens downward and is supported by the lower box component part, the lower box constituent portion is rectangular and includes the bottom wall on which the generator is placed, and a lower peripheral wall that constitutes a part of the peripheral wall and is integrally erected from a peripheral edge portion of the bottom wall, the upper box component includes a top wall having substantially the same size as the bottom wall, and an upper peripheral wall that constitutes a part of the peripheral wall, that is integrally suspended from the peripheral edge of the top wall, and whose lower edge abuts against the upper edge of the lower peripheral wall; One end of the lower peripheral wall of the lower box component and one end of the upper peripheral wall of the upper box component are connected via a hinge, The lower box component and the upper box component are each configured to be able to take an open position, A soundproof box in which the vertical dimension of the upper peripheral wall of the upper box component is set larger than the vertical dimension of the lower peripheral wall of the lower box component.

2. 2. The soundproof box according to claim 1, wherein the temperature rise suppression means comprises an exhaust silencer for suppressing noise that may be generated at the exhaust gas discharge portion.

3. 3. The soundproof box according to claim 1, wherein the temperature rise suppression means includes a flow promoting mechanism for promoting the flow of the exhaust gas discharged from the tip opening.

4. The soundproof box of claim 1, wherein the temperature rise suppression means includes an exhaust silencer on the upstream side for suppressing noise that may occur in the exhaust gas discharge section, and a flow promotion mechanism on the downstream side for promoting the flow of the exhaust gas discharged from the tip opening, and the exhaust gas passage is arranged to coincide with the respective axes of the exhaust silencer and the flow promotion mechanism.

5. 5. The soundproof box according to claim 1, wherein the peripheral wall facing the first space portion is provided with an external air inlet hole for communicating between an external space and the first space portion.

6. 6. The soundproof box according to claim 1, wherein the bottom wall, the peripheral wall, the top wall, and the partition wall are constructed to include lightweight rigid plastic plates.

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