KR102399719B1 - Ceiling board having sequences made of solid opening - Google Patents

Abstract

Disclosed is a ceiling material including a sequence of three-dimensional openings. The ceiling material including a sequence of three-dimensional openings according to the present invention comprises: a plate installed on a ceiling; an opening including an entrance formed on the plate; and an offsetting member extending from the plate at the entrance, having an end thereof separated from the plate and having part thereof facing the mouth. The mouth further includes an exit formed on the end and forms the direction of absorbing sound from the entrance toward the exit. The opening is formed in a plurality. The offsetting member is formed in a plurality to correspond to the plurality of openings. The plurality of openings forms a plurality of sequences on the plate. Both adjacent sequences among the plurality of sequences are arranged side by side and may form a group. Therefore, provided is a ceiling material for reducing noise without using a separate sound absorbing material.

Description

Ceiling material comprising a sequence of three-dimensional openings {CEILING BOARD HAVING SEQUENCES MADE OF SOLID OPENING}

The present invention relates to a ceiling material comprising a sequence of three-dimensional openings. In particular, the present invention relates to a ceiling material capable of reducing indoor noise without using a sound-absorbing material by using an embossed perforation.

Ceiling materials (or ceiling plates) mainly used in the interior of buildings can provide not only aesthetics but also several functions. For example, a ceiling material can reduce room noise.

A method for effectively manufacturing a ceiling material in consideration of appearance while reducing noise may be required. In addition, there may be a demand for a ceiling material that does not use a separate sound-absorbing material.

Registered Patent 10-1085838

SUMMARY OF THE INVENTION The present invention aims to solve the above and other problems.

Another object of the present invention is to provide a ceiling material that reduces noise without using a separate sound-absorbing material.

Another object of the present invention is to provide a ceiling material that can make the appearance beautiful.

According to one aspect of the present invention in order to achieve the above or other objects, a plate installed on the ceiling, and an opening having an inlet formed in the plate; and an offset member extending from the plate at the inlet, the end being spaced apart from the plate, and at least a portion facing the inlet, the opening further comprising an outlet formed at the end, A sound absorption direction is formed in a direction from the inlet to the outlet, the opening is formed in plurality, and the offset member is formed in plurality to correspond to the plurality of openings, and the plurality of openings are, in the plate A ceiling member including a sequence of three-dimensional openings that form a plurality of sequences, and adjacent two sequences among the plurality of sequences, are arranged side by side and form a group may be provided.

The effect of the ceiling material including the sequence of the three-dimensional opening according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, an opening that is formed between the offset member and the plate to reduce noise in the room may be provided.

According to at least one of the embodiments of the present invention, the opening may be formed in plurality, and may be disposed in a shape capable of reducing indoor noise.

Further scope of applicability of the present invention will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments such as preferred embodiments of the present invention are given by way of illustration only, since various changes and modifications within the spirit and scope of the present invention may be clearly understood by those skilled in the art.

1 is a view showing one side of a ceiling material according to an embodiment of the present invention.
2 is a perspective view of a ceiling material according to an embodiment of the present invention.
3 to 6 are cross-sectional views of the panel 100 shown in FIG. 2 taken along line AA, illustrating various embodiments.
Fig. 4 is a view showing an enlarged state of B of Fig. 3 .
7 to 11 are views in which the sound absorption direction (D) of the opening 120 according to various embodiments of the present invention is displayed on the plate 110 .
12 to 15 are views showing the plate 110 in which slits and/or grooves are formed according to various embodiments of the present invention.
16 and 17 are views illustrating a state in which a concave portion is formed in a plate according to various embodiments of the present invention.
18 to 20 are views showing a cross-section of the panel 100 of FIG. 17 cut by HH, and showing a state in which openings are located according to various embodiments of the present invention.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numbers regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "part" for the components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves. In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

Terms including an ordinal number such as 1st, 2nd, etc. may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that no other element is present in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as "comprises" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In the drawings, the size of the components may be exaggerated or reduced for convenience of description. For example, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the illustrated bar.

In cases where certain embodiments may be implemented otherwise, a specific process sequence may be performed different from the described sequence. For example, two processes described in succession may be performed substantially simultaneously, or may be performed in an order opposite to the order described.

In the following embodiments, when a film, region, or component is connected, other films, regions, and components are interposed between the films, regions, and components as well as when the films, regions, and components are directly connected. and indirectly connected. For example, in the present specification, when it is said that a film, a region, a component, etc. are electrically connected, not only the case where the film, a region, a component, etc. are directly electrically connected, other films, regions, components, etc. are interposed therebetween. Indirect electrical connection is also included.

1 is a view showing one side of a ceiling material according to an embodiment of the present invention. 2 is a perspective view of a ceiling material according to an embodiment of the present invention.

1 and 2 , a ceiling material 10 according to an embodiment of the present invention may include a panel 100 . The panel 100 may include a plate 110 . An opening 120 may be formed in the plate 110 . The opening 120 may mean a perforation. The opening 120 may be formed in plurality. The opening 120 may reduce noise incident on the panel 100 .

The panel 100 may include a connection part 130 . The connection unit 130 may be connected to the plate 110 . For example, the connection part 130 may be coupled to the plate 110 . For example, the connection part 130 may be formed to extend from the plate 110 . For example, the connection part 130 may form a shape extending from the edge of the plate 110 . The connection unit 130 may be coupled (or fixed) to a structure installed on a ceiling.

3 to 6 are views illustrating various embodiments as a cross-section of the panel 100 shown in FIG. 2 taken along A-A. Fig. 4 is a view showing an enlarged state of B of Fig. 3 .

3 and 4 , the opening 120 may be three-dimensionally formed. The opening 120 may include an inlet 121 . The inlet 121 may be formed in the plate 110 . The inlet 121 may be formed on a surface formed by the plate 110 . At least a portion of the sound wave incident on the plate 110 may pass through the inlet 121 .

The panel 100 may include an offset member 140 . The offset member 140 may be formed to extend upwardly from the plate 110 . The position of the offset member 140 may correspond to the position of the opening 120 .

The offset member 140 may include an inlet member 141 . The inlet member 141 may be formed by elongating upward from the plate 110 at the inlet 121 of the opening 120 . In this specification, the upward direction may be a direction toward the ceiling (ceiling) in the panel 100 . In the present specification, the downward direction may be a direction from the panel 100 toward the indoor space.

The offset member 140 may include a blocking member 142 . The blocking member 142 may be formed to extend from the inlet member 141 . For example, the blocking member 142 may be formed by being bent while extending from the lead-in member 141 . The blocking member 142 may, for example, face the inlet 121 . The blocking member 142 may be integrally formed with the inlet member 141 .

For example, the blocking member 142 may be formed by bending the lead-in member 141 . For example, the blocking member 142 and the inlet member 141 may form an angle. For another example, the blocking member 142 and the inlet member 141 may be integrally formed while forming a curved shape.

The offset member 140 may be integrally formed with the plate 110 . The offset member 140 may be formed to extend upwardly from the plate 110 at the inlet 121 and face the inlet 121 . A portion of the offset member 140 facing the inlet 121 may be spaced apart from the inlet 121 . For example, the blocking member 142 may be spaced apart from the inlet 121 .

The offset member 140 may have a shape extending from the plate 110 at the inlet 121 . An end portion of the offset member 140 may be spaced apart from the plate 110 .

The opening 120 may include an outlet 122 . The outlet 122 may be formed between the end of the offset member 140 and the plate 110 . The outlet 122 may communicate with the inlet 121 . The opening 120 may include a passage 123 . The passage 123 may be located between the inlet 121 and the outlet 122 .

The sound absorption direction (D) may refer to a direction from the inlet 121 to the outlet 122 . The sound absorption direction D may mean a direction in which sound waves irradiated to the panel 100 travel in the panel 100 . For example, the sound absorption direction D may mean a direction in which sound waves irradiated to the panel 100 travel in the panel 100 as a whole. In FIG. 3 , the sound absorption directions D of the adjacent openings 120 may be identical to each other.

Sound waves (including noise, etc.) incident on the panel 100 from below the panel 100 sequentially pass through the inlet 121 , the passage 123 , and the outlet 122 to the upper portion of the panel 100 . can proceed. In the course of the sound wave passing through the opening 120 , at least a portion of the sound wave may be dissipated. In other words, while the sound wave passes through the opening 120 , the amplitude of the sound wave may be reduced. By the combination of the opening 120 and the offset member 140 , the panel 100 can effectively reduce noise.

Referring to FIG. 5 , the opening 120 (refer to FIG. 3 ) may include a first opening 1120 and a second opening 2120 . The first opening 1120 and the second opening 2120 may be adjacent to each other.

The sound absorption directions D1 and D2 of the adjacent openings 1121 and 2121 may be different from each other. For example, the first opening 1120 and the second opening 2120 may be formed on the plate 110 and may be adjacent to each other. The first sound absorption direction D1 of the first opening 1120 may be opposite to the second sound absorption direction D2 of the second opening 2120 .

At least one of the number of the plurality of openings 120 , the sound absorption direction D, positions, and sizes may form a pattern of the openings 120 . For example, in FIG. 5 , the sound absorption directions D of the adjacent openings 120 may be different from each other.

The first offset member 1140 may be adjacent to the first opening 1120 . The first offset member 1140 may include a first lead-in member 1141 . The first offset member 1140 may include a first blocking member 1142 .

The second offset member 2140 may be adjacent to the second opening 2120 . The second offset member 2140 may include a second lead-in member 2141 . The second offset member 2140 may include a second blocking member 2142 .

The first opening 1120 may include a first inlet 1121 . The first opening 1120 may include a first outlet 1122 . The first opening 1120 may include a first passage 1123 .

The second opening 2120 may include a second inlet 2121 . The second opening 2120 may include a second outlet 2122 . The second opening 2120 may include a second passage 2123 .

A sound wave incident to the first inlet 1121 among sound waves traveling from the bottom of the plate 110 toward the plate 110 may be referred to as a “first sound wave”. A sound wave incident to the second inlet 2121 among sound waves traveling from the bottom of the plate 110 toward the plate 110 may be referred to as a “second sound wave”.

The first sound wave incident to the first inlet 1121 and passing through the first outlet 1122 may meet the second sound wave incident to the second inlet 2121 and passing through the second outlet 2122 . Under certain conditions, the first sound wave and the second sound wave may cause destructive interference according to the phase of the first sound wave and the phase of the second sound wave. That is, sound waves incident on the ceiling material can be effectively reduced.

Referring to FIG. 6 , a third opening 3120 may be formed in the plate 110 . The third offset member 3140 may be formed to extend upwardly from the plate 110 at the third inlet 3121 of the third opening 3120 . For example, the third inlet member 3141 of the third offset member 3140 may form an angle with the plate 110 .

The third inlet member 3141 may be bent upward from the plate 110 at the third inlet 3121 to extend. An angle at which the third retracting member 3141 is bent from the plate 110 may be less than 90 degrees. For another example, in FIG. 3 , the angle at which the inlet member 141 (see FIG. 3 ) is bent from the plate 110 (see FIG. 3 ) may be 90 degrees. When the angle at which the third lead-in member 3141 is bent from the plate 110 is less than 90 degrees, sound waves (such as noise) incident on the third lead-in member 3141 can be effectively reflected to the third outlet 3142 . there is.

1 to 6 , the offset member 140 may be concave upwardly from the plate 110 . The inlet 121 of the opening 120 may be formed in the plate 110 and located in a concave portion. In this sense, the offset member 140 may be referred to as a “concave portion”. The concave portion may mean embossing.

7 to 11 are views in which the sound absorption direction (D) of the opening 120 according to various embodiments of the present invention is displayed on the plate 110 . The surface of the plate 110 shown in FIGS. 7 to 11 may be a surface exposed to the outside when the plate 110 is constructed in a building.

Referring to FIG. 7 , the plurality of openings 120 may form a sequence. The sequence may include a first sequence S1 and a second sequence S2. The first sequence S1 and the second sequence S2 may face each other and may be parallel to each other.

A plurality of openings 120 forming a sequence may form the same sound absorption direction (D). For example, the sound absorption direction of the first sequence S1 may be the first sound absorption direction D1. For example, the sound absorption direction of the second sequence S1 may be the second sound absorption direction D1.

The first sequence S1 and the second sequence S2 may form a group. For example, the first group G1 may include a first sequence S1 and a second sequence S2 . For example, the second group G2 may include a third sequence S3 and a fourth sequence S4 . The sound absorption direction of the third sequence S3 may be a direction toward the fourth sequence S4 in the third sequence S3 . The sound absorption direction of the fourth sequence S4 may be a direction toward the third sequence S3 in the fourth sequence S4. That is, the sound absorption direction of the third sequence S3 and the sound absorption direction of the fourth sequence S4 may be opposite to each other.

The third group G3 may include a fifth sequence S5 and a sixth sequence S6 . The sound absorption direction of the fifth sequence S5 and the sound absorption direction of the sixth sequence S6 may be opposite to each other.

The fourth group G4 may include a seventh sequence S7 and an eighth sequence S8 . The sound absorption direction of the seventh sequence S7 and the sound absorption direction of the eighth sequence S8 may be opposite to each other.

The intensity of the sound wave incident to the first sequence S1 and the sound wave incident to the second sequence S2 may be weakened by destructive interference. In other words, due to the arrangement of both sequences adjacent to each other forming a sound absorption direction opposite to each other, noise can be effectively reduced.

8 and 9 , the plurality of openings 120 may form a loop. Referring to FIG. 8 , loops C1, C2, C3, C4, C5, and C6 include a first loop C1, a second loop C2, a third loop C3, a fourth loop C4, It may include a fifth loop C5 and a sixth loop C6. Referring to FIG. 9 , loops C1, C2, C3, and C4 may include a first loop C1, a second loop C2, a third loop C3, and a fourth loop C4. there is.

The shape of the loop may vary. For example, referring to FIG. 8 , the loops C1 , C2 , C3 , C4 , C5 , and C6 may be circular. For example, referring to FIG. 9 , the loops C1 , C2 , C3 , and C4 may be rectangular.

The plurality of loops may be arranged without overlapping. For example, referring to FIG. 8 , the second loop C2 may be disposed outside the first loop C1 . The second loop C2 may surround the first loop C1 . The first loop C1 may be surrounded by the second loop C2 .

Both adjacent loops may form one group. For example, the first group G1 may include a first loop C1 and a second loop C2 . The sound absorption direction of the first loop C1 and the sound absorption direction of the second loop C2 may be opposite to each other. For example, the sound absorption direction of the opening 120 forming the first loop C1 may be a direction from the first loop C1 toward the second loop C2 . For example, the sound absorption direction of the opening 120 forming the second loop C2 may be a direction from the second loop C2 toward the first loop C1 .

As described above, due to the fact that the sound absorption directions of both adjacent loops forming one group are opposite to each other, sound waves (such as noise) incident on the plate 110 can be effectively reduced.

Referring to FIG. 10 , a surface of the plate 110 may be partitioned. For example, the plate 110 may be divided by a first dividing line L1 and a second dividing line L2 . For example, the plate 110 may be divided into a first region R1 , a second region R2 , a third region R3 , and a fourth region R4 .

At least one group may be formed on the plate 110 in each of the regions R1, R2, R3, and R4. At least one group may include both adjacent loops forming a sound absorption direction facing each other. For example, the first loop C1 and the second loop C2 may form a first group G1 while forming a sound absorbing direction facing each other. The first group G1 may be formed in each region R1 , R2 , R3 , and R4 .

Referring to FIG. 11 , the plurality of openings 120 may be disposed in the plate 110 . The plurality of openings 120 may be randomly arranged on the plate 110 . Each of the plurality of openings 120 may form a sound absorption direction (D). The sound absorption direction D of each of the plurality of openings 120 may be randomly distributed.

Sound waves (such as noise) incident on the plate 110 may pass through the opening 120 and travel between the other surface of the plate 110 and a ceiling. Sound waves (such as noise) propagating between the plate 110 and the ceiling can be effectively reduced due to the location of the randomly arranged openings 120 and the randomly distributed sound absorption direction (D).

12 to 15 are views showing the plate 110 in which slits and/or grooves are formed according to various embodiments of the present invention.

Referring to FIG. 12A , the slit 150 according to an embodiment of the present invention may be formed in the plate 110 . The slit 150 may be provided in plurality. The plurality of slits 150 may be disposed on the plate 110 in a predetermined pattern. The slit 150 may form an elongated shape in one direction.

Figure 12 (b) shows a cross-section of the plate 110 of Figure 12 (a) cut C-C. Referring to FIG. 12B , one surface and the other surface of the plate 110 may be connected through a slit 150 . A pressure P may be applied to the plate 110 adjacent to the slit 150 .

The pressure P may be applied to the plate 110 by a press device. For example, the pressure P may be provided from the upper surface to the lower surface of the plate 110 . When the pressure P is applied to the plate 110 adjacent to the slit 150, the portion of the plate 110 adjacent to the slit 150 is bent to form the offset member 140 (refer to FIGS. 3 to 6). there is.

Referring to FIG. 13A , the slit 150 according to an embodiment of the present invention may form an overall arc shape.

Figure 13 (b) shows a cross-section of the plate 110 of Figure 13 (a) cut D-D. Referring to FIG. 13B , one surface and the other surface of the plate 110 may be connected through a slit 150 . When the pressure P is applied to the plate 110 adjacent to the slit 150, the portion of the plate 110 adjacent to the slit 150 is bent to form the offset member 140 (refer to FIGS. 3 to 6). there is.

Referring to FIG. 14A , a plurality of slits 150 according to an embodiment of the present invention may be provided. The slit 150 may include a first slit 151 and a second slit 152 .

The first slit 151 and the second slit 152 may communicate with each other. The first slit 151 may form an elongated shape from one end to the other end. The second slit 152 may have a shape extending from one end to the other end. One end of the second slit 152 may be connected to the other end of the first slit 151 . The first slit 151 and the second slit 152 may form an angle. For example, the first slit 151 and the second slit 152 may form a right angle.

Fig. 14 (b) is a cross-section of the plate 110 of Fig. 14 (a) taken along E-E. Referring to FIG. 14B , one surface and the other surface of the plate 110 may be connected through a slit 150 . When the pressure P is applied to the plate 110 adjacent to the slit 150, the portion of the plate 110 adjacent to the slit 150 is bent to form the offset member 140 (refer to FIGS. 3 to 6). there is.

Referring to FIG. 15A , the pre-processing unit PPP may be formed on the plate 110 . The preprocessor PPP may be provided in plurality. The preprocessor PPP may include at least one slit 150 . The slit 150 may have a shape extending from one end to the other end.

The preprocessor PPP may include at least one groove 160 . For example, the preprocessor PPP may include a first groove 161 and a second groove 162 . The first groove 161 may form a shape extending in one direction from one end of the slit 150 . The second groove 162 may form a shape extending in one direction from the other end of the slit 150 .

Figure 15 (b) is a view showing a cross-section of the plate 110 of Figure 15 (a) cut F-F, Figure 15 (c) is the plate 110 of Figure 15 (a) cut G-G It is a drawing showing a cross section.

Referring to (b) and (c) of FIG. 15 , one surface and the other surface of the plate 110 may be connected through a slit 150 . A pressure P may be applied to the plate 110 adjacent to the slit 150 . The pressure P may be provided to the plate 110 between the first groove 161 and the second groove 162 . When the pressure P is applied to the plate 110 , a portion of the plate 110 adjacent to the pre-processing unit PPP may be bent to form the offset member 140 (refer to FIGS. 3 to 6 ).

16 and 17 are views illustrating a state in which a concave portion is formed in a plate according to various embodiments of the present invention. The surface of the plate 110 observed in FIGS. 16 and 17 may be a surface viewed from the outside when the panel 100 is installed on the ceiling.

16 and 17 , the concave portion 170 may be formed in the plate 110 . The concave portion 170 may be formed by being depressed from one surface of the plate 110 . The concave portion 170 may have various shapes. For example, the concave portion 170 may have an elliptical shape. For example, the concave portion 170 may have a rectangular or rhombus shape. A plurality of concave portions 170 may be provided.

The opening 120 may be formed in the plate 110 . Through the opening 120 , one surface and the other surface of the plate 110 may be connected. A plurality of openings 120 may be provided.

The concave portion 170 may reduce the size of the sound wave while reflecting (or diffusely reflecting) at least a portion of the sound wave (such as noise) incident toward the plate 110 . The opening 120 may reduce noise by passing a portion of the sound wave incident toward the plate 110 . Due to the combination of the recessed portion 170 and the opening 120 , noise can be effectively reduced.

The size of the opening 120 may affect the sound absorption effect. For example, as a result of measuring the sound absorption coefficient in the same state except for the size of the opening 120 , when the diameter of the opening 120 is 0.8 mm, the sound absorption coefficient is 0.21, and the diameter of the opening 120 is 0.5 mm In this case, the sound absorption coefficient was measured to be 0.38. The sound absorption rate may refer to a ratio of the intensity (or size) of the sound wave to which the sound wave is provided and the intensity (or size) of the sound wave subjected to sound absorption.

When the diameter of the opening 120 is greater than 0.5 mm, the sound wave passing through the panel 100 through the opening 120 is more likely to pass through the panel 100 again through the opening 120 and proceed into the room, the sound absorption rate This can be lowered. When the diameter of the opening 120 is smaller than 0.5 mm, the ratio of the sound wave passing through the panel 100 through the opening 120 to the sound wave incident on the panel 100 is lowered, so that the sound absorption rate may be lowered. That is, the sound absorption coefficient may be relatively high when the diameter of the opening 120 is about 0.5 mm. For example, when the diameter of the opening 120 is 0.4 to 0.6 mm, the sound absorption rate may be relatively high.

The density of the openings 120 may affect the sound absorption effect. When the area of the panel 100 is constant and the size (diameter) of the opening 120 is constant, the density of the opening 120 may mean a ratio of the area of the opening 120 to the area of the panel 100 . When the openings 120 are arranged in a grid shape, the density of the openings 120 may correspond to a distance between adjacent openings 120 . For example, if the distance between the adjacent openings 120 is large, the density of the openings 120 may be small. For example, if the distance between the adjacent openings 120 is large, the density of the openings 120 may be large.

As a result of measuring the sound absorption coefficient in a state where the diameter of the opening 120 is 0.5 mm, when the distance between the adjacent openings 120 is 5 mm, the sound absorption coefficient is 0.38, and when the distance between the adjacent openings 120 is 20 mm, the sound absorption coefficient is 0.17 and when the distance between the adjacent openings 120 is 3 mm, the sound absorption coefficient may be 0.27.

When the distance between the adjacent openings 120 is greater than 5 mm, the ratio of sound waves passing through the openings 120 compared to the sound waves incident on the panel 100 is reduced, so that the sound absorption coefficient may be lowered. If the distance between the adjacent openings 120 is less than 5 mm, the sound wave passing through the panel 100 through the opening 120 is highly likely to pass through the panel 100 again through the opening 120 and travel to the room. , the sound absorption rate may be lowered. For example, when the distance between the adjacent openings 120 is 4 to 6 mm, the sound absorption rate may be relatively high.

18 to 20 are views showing a cross-section of the panel 100 of FIG. 17 cut along H-H, and showing an opening in which an opening is located according to various embodiments of the present invention. The panel 100 (refer to FIGS. 16 and 17 ) may be located under the ceiling 200 .

18 to 20 , the concave portion 170 may include a first concave portion 171 . The first concave part 171 may be formed to extend from the plate 110 . The first concave part 171 may be connected to the plate 110 . The first concave part 171 may form an angle with the plate 110 . In other words, the first concave part 171 may be formed by bending from the plate 110 .

The concave portion 170 may include a second concave portion 171 . The second concave part 172 may be formed to extend from the first concave part 171 . The second concave part 172 may be formed by bending the first concave part 171 . The second concave part 172 may be connected to the plate 110 by the first concave part 171 . The first concave part 171 and the second concave part 172 may be integrally formed.

Referring to FIG. 18 , the opening 120 may be located in the second concave part 172 . At least a portion of the sound wave incident on the concave portion 170 may pass through the opening 120 . Thereby, the noise can be effectively reduced.

Referring to FIG. 19 , the opening 120 may be located in the plate 110 . At least a portion of the sound wave incident on the plate 110 may pass through the opening 120 . At least a portion of the sound wave incident on the concave portion 170 may be reflected (or diffusely reflected) by the concave portion 170 . Thereby, the noise can be effectively reduced.

Referring to FIG. 20 , the opening 120 may be positioned across the first concave part 171 and the second concave part 172 . In other words, a portion of the opening 120 may be located in the first recessed part 171 and another part of the opening 120 may be located in the second recessed part 172 . Sound waves passing through the opening 120 toward the ceiling 200 can be effectively confined between the ceiling 200 and the panel 100 (see FIGS. 16 and 17 ) by propagating in a horizontal as well as a vertical direction. .

1 to 20 , the panel 100 according to an embodiment of the present invention may be used as a ceiling material. The panel 100 may be formed of metal. That is, the panel 100 may be formed of a material including a metal. Metals can be relatively advantageous against fire. The panel 100 may have relatively high incombustibility in that it does not require a separate sound absorbing material. In general, the sound-absorbing material may be vulnerable to fire.

Any or other embodiments of the invention described above are not mutually exclusive or distinct. Certain embodiments or other embodiments of the present invention described above may be combined or combined with respective configurations or functions.

It is apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention. The above detailed description should not be construed as restrictive in all respects and should be considered as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention.

10: ceiling material 100: panel
110: plate 120: opening
121: entrance 122: exit
123: passage 130: connection part
140: offset member 141: inlet member
142: blocking member 150: slit
161: first groove 162: second groove
170: concave portion 171: first concave portion part
172: second concave part part
D: Suction direction S: Sequence
G: group C: loop
PPP: preprocessor

Claims (9)

plate mounted on the ceiling;
an opening having an inlet formed in the plate; And
an offset member extending from the plate at the inlet and having an end spaced apart from the plate, at least a portion facing the inlet,
The opening is
Further comprising an outlet formed at the end,
Forming a sound absorption direction in the direction from the inlet to the outlet,
The opening is
formed in plurality,
The offset member is
Corresponding to the plurality of openings are formed in plurality,
The plurality of openings,
forming a plurality of sequences in the plate,
Both sequences adjacent among the plurality of sequences are:
They are placed side by side and form a group,
The plate is
divided into a plurality of zones,
The group is formed in plurality,
at least one said group disposed in each of said plurality of zones;
A ceiling material comprising a sequence of three-dimensional openings.
According to claim 1,
The sound absorption directions of both openings adjacent to each other among the plurality of openings are the same as each other,
A ceiling material comprising a sequence of three-dimensional openings.
According to claim 1,
The sound absorption directions of both openings adjacent to each other among the plurality of openings are opposite to each other,
A ceiling material comprising a sequence of three-dimensional openings.
According to claim 1,
The group is
A first sequence and a second sequence that face each other and are arranged side by side,
the first opening of the first sequence is adjacent to the second opening of the second sequence;
The sound absorption direction of the first opening is,
a direction from the first opening toward the second opening;
The sound absorption direction of the second opening is,
a direction from the second opening toward the first opening;
A ceiling material comprising a sequence of three-dimensional openings.
5. The method of claim 4,
The first sequence and the second sequence,
formed in a straight line,
A ceiling material comprising a sequence of three-dimensional openings.
5. The method of claim 4,
The first sequence and the second sequence are
It is formed in the form of a loop,
wherein the second sequence surrounds the first sequence;
A ceiling material comprising a sequence of three-dimensional openings.
7. The method of claim 6,
The loop is in the form of a circle,
A ceiling material comprising a sequence of three-dimensional openings.
7. The method of claim 6,
The loop is in the form of a rectangle,
A ceiling material comprising a sequence of three-dimensional openings.
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