An acoustic reflecting device with adjustable directivity

Abstract

The utility model discloses an adjustable directivity acoustic reflection device relates to acoustic reflection technical field, including sound wave reflection main part and sound split subassembly, the sound wave reflection main part is by multiple groups of side -by -side distribution's unit reflection piece constitutes, the unit reflection piece includes the positioning beam for installing sound split subassembly, the front and rear outer wall of positioning beam and along its length direction distribution has four groups of sound split unit group, and every group sound split unit group contains two groups of sound split subassembly. The utility model discloses the positioning beam of middle part protruding makes sound split subassembly present broken line shape distribution, and the horizontal height of adjacent two positioning beams is not one, makes the sound split subassembly of side -by -side adjacent and has height difference, can carry out batch and multiple split cutting of the sound wave that transmits from the performance platform, makes the original geometric reflection sound wave irradiation surface scatter, makes the sound wave after scattering evenly spread to the place outside audition and attenuate, thereby promotes the intelligibility in hall and the feeling of being surrounded.

Description

Technical Field

[0001] This utility model relates to the field of acoustic reflection technology, specifically to an adjustable directional acoustic reflection device. Background Technology

[0002] Concert halls are a very important type of performing arts architecture. With the further development of the national economy and the increasing frequency of various types of entertainment exchanges at home and abroad, cities of all types have designed concert halls for citizens to enjoy and exchange ideas. Their biggest feature is the requirement for natural sound performance, which puts forward high requirements for the acoustic design of concert halls. As a professional space for music performances and to provide audiences, the acoustic design of concert halls is a very important project.

[0003] In the acoustic design of concert halls, the shape of the hall plays a decisive role in optimizing the acoustic quality. The shape design affects the early reflected sound in the hall. Since the sound source is emitted from the stage, it spreads to all directions through the stage and comes into contact with the ceiling of the hall. At this time, the sound waves will reflect downward and intersect with the direct sound waves that are propagating in the direction of the audience. The reflected sound waves will reduce the clarity of the sound, making the sound muffled and unclear when it reaches the audience's ears. To address this, an adjustable directional acoustic reflection device is proposed. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide an adjustable directional acoustic reflection device to solve the technical problems mentioned in the background.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable directional acoustic reflection device, comprising a sound wave reflecting body and a sound wedge assembly, wherein the sound wave reflecting body is composed of multiple sets of side-by-side unit reflectors, each unit reflector including a positioning beam for mounting the sound wedge assembly, and four sets of sound wedge unit groups are distributed on the front and rear outer walls of the positioning beam along its length direction, each set of sound wedge unit groups including two sets of sound wedge assemblies, the two sets of sound wedge assemblies being distributed symmetrically on the front and rear sides of the positioning beam; The sound-crack assembly includes a sound-crack plate movably connected to the outer wall of the positioning beam. The sound-crack plate is composed of a keel and a fabric. The fabric covers the outer wall of the keel. A reinforcing rib is welded to the inside of the keel at the inside corner. The space formed by the reinforcing rib and the keel is filled with sound-absorbing cotton.

[0006] As a preferred technical solution, the positioning beam is convex in the middle, and the upper surface of each group of positioning beams is provided with a connecting shaft that connects to the ceiling. The top of the positioning beam is fixed with a threaded seat that is threadedly connected to the bottom of the connecting shaft.

[0007] As a preferred technical solution, threaded rods are fixed on both sides and near the ends of each group of positioning beams. There is a height difference between the threaded rods on both sides of the positioning beams, and the threaded rods on the outer walls of adjacent groups of positioning beams are fixedly connected by threaded cylinders.

[0008] As a preferred technical solution, the acoustic wedge units on the outer walls of two adjacent groups of positioning beams are arranged in opposite directions, and the acoustic wedge components of two adjacent groups are in a parallel state.

[0009] As a preferred technical solution, an inner liner is fixed on one side of the keel, and a positioning frame sleeve fixed to the outer wall of the unit reflector is sleeved on the outer wall of the inner liner. The positioning frame sleeve is abutted against the inner liner by locking bolts, and blind holes for the locking bolts to abut are opened on the inner and outer walls of the inner liner.

[0010] As a preferred technical solution, the sound-splitting plate is trapezoidal in shape, wider at the top and narrower at the bottom.

[0011] In summary, the present invention has the following main advantages: This invention uses a centrally protruding positioning beam to make the sound-cutter components distributed in a zigzag shape. The positioning beams of adjacent groups are at different horizontal heights, resulting in a height difference between the side-by-side sound-cutter components. This allows the sound waves transmitted from the stage to be split and cut off in batches and multiple times, thus scattering the originally geometrically reflected sound wave illumination surface. The scattered sound waves are then evenly diffused to areas outside the listening area and attenuated, thereby improving the clarity and immersive feeling in the hall. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the unit reflector of this utility model; Figure 3 This is a diagram showing the connection structure of the multiple sets of positioning beams of this utility model; Figure 4 This is a structural schematic diagram of two adjacent sets of positioning beams of this utility model; Figure 5 This is an unfolded structural diagram of the acoustic wedge component of this utility model; Figure 6 This is a cross-sectional plan view of the wedge plate of this utility model.

[0013] In the diagram: 100, Sound wave reflector body; 110, Unit reflector; 111, Positioning beam; 112, Connecting shaft; 113, Threaded seat; 120, Sound wedge unit group; 130, Sound wedge assembly; 131, Sound wedge plate; 132, Inner lining; 133, Positioning frame; 134, Locking bolt; 135, Keel; 136, Fabric; 137, Reinforcing rib; 138, Sound-absorbing cotton; 140, Threaded cylinder; 141, Threaded rod. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0015] The embodiments of this utility model will be described below based on its overall structure.

[0016] An adjustable directional acoustic reflection device, such as Figures 1 to 6 As shown, the device includes a sound wave reflecting body 100 and a sound wedge assembly 130. The sound wave reflecting body 100 is composed of multiple sets of side-by-side unit reflectors 110. Each unit reflector 110 includes a positioning beam 111 for mounting the sound wedge assembly 130. Four sets of sound wedge unit groups 120 are distributed on the front and rear outer walls of the positioning beam 111 along its length. Each set of sound wedge unit groups 120 includes two sets of sound wedge assemblies 130. The two sets of sound wedge assemblies 130 are distributed symmetrically on the front and rear sides of the positioning beam 111. The sound-crack assembly 130 includes a sound-crack plate 131 movably connected to the outer wall of the positioning beam 111. The sound-crack plate 131 is composed of a keel 135 and a fabric 136. The fabric 136 covers the outer wall of the keel 135. A reinforcing rib 137 is welded to the inside of the keel 135 at the inside corner. The space formed by the reinforcing rib 137 and the keel 135 is filled with sound-absorbing cotton 138. The positioning beam 111 is convex in the middle. Each group of positioning beams 111 has threaded rods 141 fixed on both sides and near the end. There is a height difference between the threaded rods 141 on both sides of the positioning beam 111. The threaded rods 141 on the outer wall of two adjacent groups of positioning beams 111 are fixedly connected by threaded cylinders 140. The sound-splitting plate 131 is trapezoidal in shape, wider at the top and narrower at the bottom.

[0017] The sound emitted from the concert hall stage is the direct wave, and the direct wave reflected back from the walls of the hall is the reflected wave. The threaded rods 141 with height differences on both sides of the positioning beam 111 cause the adjacent two sets of positioning beams 111 to be in an uneven state. Because the top of the positioning beam 111 is higher than the two ends, the height of the sound wedge unit group 120 on each set of positioning beams 111 is different, and the sound wedge unit group 120 on the adjacent two sets of positioning beams 111 is also in a non-horizontal state. At the same time, the two sets of sound wedge components 130 in each set of sound wedge unit group 120 are staggered, which allows the sound transmitted from the concert hall stage to be split and cut off by the sound wedge plate 131 in each set of sound wedge components 130, scattering the originally geometrically reflected sound wave irradiation surface, so that the scattered sound waves are evenly diffused to places outside the listening area and attenuated. Moreover, the split and cut sound waves will continue to rise and be absorbed by the sound-absorbing cotton 138 through the fabric 136, which can further reduce the interference of the scattered sound waves on the direct sound.

[0018] Please refer to this carefully. Figure 1 , Figure 2 , Figure 3 and Figure 4 Each positioning beam 111 has a connecting shaft 112 on its upper surface that connects to the ceiling, and a threaded seat 113 that is threaded to the bottom of the connecting shaft 112 is fixed on the top of the positioning beam 111.

[0019] The top of the connecting shaft 112 is connected to a pre-drilled hole in the ceiling, and the sound wave reflecting body 100l can be installed above the concert hall via the threaded seat 113, thereby processing the sound waves in the hall.

[0020] Please refer to this carefully. Figure 1 and Figure 2 The acoustic wedge unit groups 120 on the outer walls of two adjacent sets of positioning beams 111 are arranged in opposite directions, and the two adjacent sets of acoustic wedge components 130 are in a parallel state.

[0021] The adjacent sound-cutter component 130 can cut the sound waves propagating from the concert hall stage, breaking the originally geometrically reflected sound wave irradiation surface, so that the broken sound waves are evenly diffused to places outside the listening area and attenuated, thereby improving the clarity and sense of immersion in the hall.

[0022] Please refer to this carefully. Figure 5 One side of the keel 135 is fixed with an inner liner 132. The outer wall of the inner liner 132 is fitted with a positioning frame sleeve 133 fixed to the outer wall of the unit reflector 110. The positioning frame sleeve 133 is abutted against the inner liner 132 by locking bolts 134, and blind holes are opened on the inner and outer walls of the inner liner 132 for the locking bolts 134 to abut.

[0023] Through the cooperation of the inner lining 132 and the positioning frame 133, the sound wedge assembly 130 can be flexibly installed and removed from the outer wall of the positioning beam 111, thereby replacing the sound wedge 131 of different sizes and tapers to meet the adjustment of the direction of sound waves in the concert hall.

[0024] In use, the threaded rods 141 with height differences on both sides of the positioning beam 111 cause the adjacent two sets of positioning beams 111 to be in an uneven state. Because the top of the positioning beam 111 is higher than the two ends, the height of the sound wedge unit group 120 on each set of positioning beams 111 is different, and the sound wedge unit group 120 on the adjacent two sets of positioning beams 111 is also in a non-horizontal state. At the same time, the two sets of sound wedge components 130 in each set of sound wedge unit group 120 are staggered, which allows the sound transmitted from the concert hall stage to be split and cut off by the sound wedge plate 131 in each set of sound wedge components 130, scattering the sound wave irradiation surface that was originally geometrically reflected, so that the scattered sound waves are evenly diffused to places outside the listening area and attenuated. Moreover, the split and cut sound waves will continue to rise and be absorbed by the sound-absorbing cotton 138 through the fabric 136, which can further reduce the interference of the scattered sound waves on the direct sound.

[0025] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An adjustable directional acoustic reflection device, comprising a sound wave reflecting body (100) and a sound wedge assembly (130), characterized in that: The acoustic wave reflecting body (100) is composed of multiple sets of side-by-side unit reflectors (110). Each unit reflector (110) includes a positioning beam (111) for mounting acoustic wedge components (130). Four sets of acoustic wedge unit groups (120) are distributed on the front and rear outer walls of the positioning beam (111) along its length. Each set of acoustic wedge unit groups (120) contains two sets of acoustic wedge components (130). The two sets of acoustic wedge components (130) are distributed symmetrically on the front and rear sides of the positioning beam (111). The sound-crack assembly (130) includes a sound-crack plate (131) movably connected to the outer wall of the positioning beam (111). The sound-crack plate (131) is composed of a keel (135) and a fabric (136). The fabric (136) covers the outer wall of the keel (135). A reinforcing rib (137) is welded to the inside of the keel (135) at the inside corner. The space formed by the reinforcing rib (137) and the keel (135) is filled with sound-absorbing cotton (138).

2. The adjustable directional acoustic reflection device according to claim 1, characterized in that: The positioning beam (111) is convex in the middle. The upper surface of each positioning beam (111) is provided with a connecting shaft (112) that is connected to the ceiling. The top of the positioning beam (111) is fixed with a threaded seat (113) that is threaded to the bottom of the connecting shaft (112).

3. The adjustable directional acoustic reflection device according to claim 1, characterized in that: Each of the positioning beams (111) has threaded rods (141) fixed on both sides and near the end. There is a height difference between the threaded rods (141) on both sides of the positioning beam (111). The threaded rods (141) on the outer walls of two adjacent positioning beams (111) are fixedly connected by threaded cylinders (140).

4. The adjustable directional acoustic reflection device according to claim 1, characterized in that: The acoustic wedge unit groups (120) on the outer walls of the two adjacent groups of positioning beams (111) are arranged in opposite directions, and the two adjacent groups of acoustic wedge components (130) are in a parallel state.

5. The adjustable directional acoustic reflection device according to claim 1, characterized in that: The keel (135) is fixed with an inner liner (132) on one side. The outer wall of the inner liner (132) is fitted with a positioning frame (133) fixed to the outer wall of the unit reflector (110). The positioning frame (133) is abutted against the inner liner (132) by a locking bolt (134), and the inner and outer walls of the inner liner (132) are provided with blind holes for the locking bolt (134) to abut.

6. The adjustable directional acoustic reflection device according to claim 1, characterized in that: The sound-splitting plate (131) is trapezoidal in shape, wider at the top and narrower at the bottom.

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