Timber for building

Abstract

To provide fire-resistant building lumber that excels in carbon dioxide emission suppression effect and recycling performance.SOLUTION: Building lumber comprises a finished surface and a flow passage for fire resistance, wherein the flow passage for fire resistance has: an introduction port; a hollow parallel flow passage in communication with the introduction port and extending parallel to the finished surface; and a discharge port in communication with the parallel flow passage and opening to the finished surface. This structure allows water introduced from the introduction port upon a fire to be discharged from the discharge port through the parallel flow passage.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to construction wood.

Background Art

[0002] Fire-resistant construction wood is known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Construction wood preferably has an excellent carbon dioxide emission reduction effect and reusability.

[0005] Therefore, an object of the present invention is to provide construction wood that has an excellent carbon dioxide emission reduction effect and reusability and is fire-resistant.

Means for Solving the Problems

[0006] One aspect of the present invention is as follows.

[0007] [1] It has a finished surface and a fire-resistant flow path, The fire-resistant flow path has an inlet, a hollow parallel flow path that communicates with the inlet and extends parallel to the finished surface, and an outlet that communicates with the parallel flow path and opens to the finished surface, and water passed through the inlet during a fire can be discharged from the outlet through the parallel flow path. Construction wood.

[0008] [2] The construction wood according to [1], which can hold water flowing through the fire-resistant flow path.

[0009] [3] The building timber according to [2], wherein the finished surface can retain the water flowing through the fire-resistant channel.

[0010] [4] The building timber according to [2] or [3], which can absorb water flowing through the fire-resistant channel via the surface of the parallel channel.

[0011] [5] The inlet is provided on the surface opposite to the finished surface or on the finished surface, and is made of building timber as described in any one of items [1] to [4].

[0012] [6] The building timber according to any one of [1] to [5], wherein the parallel flow channels include a plurality of first flow channels that are arranged along the finished surface, parallel to each other and extending parallel to the finished surface, and a flow channel connection portion that allows all of the first flow channels to pass through each other.

[0013] [7] The building timber according to [6], wherein the flow channel connection portion is arranged along the finished surface and has second flow channels that extend parallel to the finished surface from end to end of the plurality of first flow channels.

[0014] [8] The building timber according to [6] or [7], wherein the parallel flow path has a group of outlets consisting of a plurality of outlets arranged along the first flow path, corresponding to each of the first flow paths.

[0015] [9] The parallel flow channels consist of a first flow channel group comprising a plurality of first flow channels that are arranged along the finished surface, parallel to each other and extending parallel to the finished surface, with the inner end of the discharge port opening, and a second flow channel group comprising a plurality of second flow channels that are arranged along the finished surface and extend parallel to the finished surface from end to end of the plurality of first flow channels. At least one of the first flow paths has a water retention layer that protrudes toward the finished surface side from all of the second flow paths connected to the first flow path, or at least one of the second flow paths has a water retention layer that protrudes toward the finished surface side from all of the first flow paths connected to the second flow path. The architectural wood according to any one of [1] to [8].

[0016]

[10] The first flow path group includes a first discharge flow path having a discharge port without having the water retention layer as the first flow path, and a first water retention flow path having a water retention layer without having the discharge port as the first flow path. The architectural wood according to [9].

[0017]

[11] The first flow path group includes a first water retention and discharge flow path having the water retention layer and the discharge port as the first flow path. The architectural wood according to [9] or

[10] .

[0018]

[12] The second flow path group includes a second water retention flow path having a water retention layer without having a discharge port as the second flow path. The architectural wood according to any one of [9] to

[11] .

[0019]

[13] The fireproof flow path has a second inlet, a hollow second parallel flow path that extends parallel to the finished surface on the opposite side or the finished surface side of the parallel flow path and communicates with the second inlet, and a second outlet that communicates with the second parallel flow path and opens to the finished surface. The water introduced from the second inlet during a fire can be discharged from the second outlet through the second parallel flow path. The architectural wood according to any one of [9] to

[12] .

[0020]

[14] The second inlet is provided on the outer surface of the architectural wood. The architectural wood according to any one of [9] to

[13] .

[0021]

[15] It has a plate having a groove constituting the parallel flow path. The architectural wood according to any one of [1] to

[14] , formed by lumber, laminated veneer lumber, plywood, glued laminated timber or cross-laminated timber, or any combination thereof.

[0022]

[16] A fire-resistant structure made of wood, having the architectural wood according to any one of [1] to

[15] . [Advantages of the Invention]

[0023] According to the present invention, it is possible to provide architectural wood that is excellent in carbon dioxide emission reduction effect and reusability and has fire resistance. [Brief Description of the Drawings]

[0024] [Figure 1] It is a front view of the architectural wood of the first embodiment of the present invention. [Figure 2] It is a top view of the architectural wood shown in FIG. 1. [Figure 3] It is a right side view showing the architectural wood shown in FIG. 1. [Figure 4] It is a partially enlarged view of FIG. 3. [Figure 5] It is a front view of the architectural wood of the second embodiment of the present invention. [Figure 6] It is a top view of the architectural wood shown in FIG. 5. [Figure 7] It is a right side view showing the architectural wood shown in FIG. 5. [Figure 8] It is a front view of the architectural wood of the third embodiment of the present invention. [Figure 9] It is a top view of the architectural wood shown in FIG. 8. [Figure 10] It is a right side view showing the architectural wood shown in FIG. 8. [Figure 11] It is a front view of the architectural wood of the fourth embodiment of the present invention. [Figure 12] It is a top view of the architectural wood shown in FIG. 11. [Figure 13] It is a right side view showing the architectural wood shown in FIG. 11. [Figure 14]This is a front view of a building timber according to a fifth embodiment of the present invention. [Figure 15] Figure 14 is a top view of the building timber shown. [Figure 16] Figure 14 is a right-side view showing building timber. [Figure 17] This is a front view of a building timber according to the sixth embodiment of the present invention. [Figure 18] Figure 17 is a top view of the building timber shown. [Figure 19] Figure 17 shows a cross-sectional view of construction timber. [Figure 20] Figure 17 shows a cross-sectional view of BB (blocking) timber used in construction. [Figure 21] This is a front view of a building timber according to the seventh embodiment of the present invention. [Figure 22] Figure 21 is a top view of the building timber shown. [Figure 23] Figure 21 is a right side view showing building timber. [Figure 24] This is a front view of the building timber according to the eighth embodiment of the present invention. [Figure 25] Figure 24 is a top view of the building timber shown. [Figure 26] Figure 24 is a right side view showing building timber. [Figure 27] This is a front view of the building timber according to the ninth embodiment of the present invention. [Figure 28] Figure 27 is a top view of the building timber shown. [Figure 29] Figure 27 is a cross-sectional view of construction timber using carbon cross-section (CC). [Figure 30] Figure 27 shows a cross-sectional view of construction timber. [Modes for carrying out the invention]

[0025] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0026] <First Embodiment> As shown in Figures 1 to 4, in the first embodiment of the present invention, the building timber 1 has a finished surface 2 and a fire-resistant channel 3. The fire-resistant channel 3 has an inlet 4, a hollow parallel channel 5 that connects to the inlet 4 and extends parallel to the finished surface 2, and an outlet 6a that connects to the parallel channel 5 and opens to the finished surface 2. In the event of a fire, water is passed through the inlet 4 and discharged through the parallel channel 5 and out of the outlet 6a.

[0027] According to the above configuration, in the event of a fire, water is passed through the inlet 4 and discharged from the outlet 6a via the parallel flow path 5. The water discharged from the outlet 6a is vaporized by the heat of the fire, and the finished surface 2 can be cooled by the heat of vaporization. In addition, the finished surface 2 can also be cooled by the water flowing through the parallel flow path 5, which extends parallel to the finished surface 2. Therefore, compared to cases where fire resistance such as fire resistance or semi-fire resistance is provided by applying or absorbing fire-resistant agents, it is possible to realize building timber 1 with superior carbon dioxide emission reduction and reusability. Furthermore, the building timber 1 may also be configured to exhibit non-combustible properties such as non-combustible material, semi-non-combustible material, or flame-retardant material in addition to fire resistance.

[0028] The building timber 1 can retain the water flowing through the fire-resistant channel 3. With the above configuration, an improvement in fire resistance can be obtained by retaining the water flowing through the fire-resistant channel 3 in the building timber 1.

[0029] The building timber 1 can retain water flowing through the fire-resistant channel 3 on its finished surface 2. With the above configuration, an improvement in fire resistance can be obtained by retaining the water flowing through the fire-resistant channel 3 on the finished surface 2.

[0030] The building timber 1 can absorb water flowing through the fire-resistant channel 3 via the surface of the parallel channel 5. With the above configuration, an improvement in fire resistance can be obtained by absorbing water flowing through the fire-resistant channel 3 into the building timber 1 via the surface of the parallel channel 5.

[0031] The inlet 4 is provided on the surface 7 opposite to the finished surface 2. With the above configuration, the need to provide the inlet 4 on the finished surface 2 can be reduced, making it easier to ensure the aesthetic appeal of the finished surface 2. The inlet 4 may also be provided on the finished surface 2. With the above configuration, the need to provide the inlet 4 on the surface 7 opposite to the finished surface 2 can be reduced, making it easier to ensure the aesthetic appeal of the surface 7 opposite to the finished surface 2.

[0032] The parallel flow path 5 has a plurality of first flow paths 5a that are arranged along the finished surface 2, parallel to each other and extending parallel to the finished surface 2, and a flow path connection part 5b that connects all the first flow paths 5a to each other. With the above configuration, the finished surface 2 can be efficiently cooled by flowing water through the plurality of first flow paths 5a and the flow path connection part 5b.

[0033] The flow path connection section 5b has a second flow path 5b1 that is aligned along the finished surface 2 and extends parallel to the finished surface 2 from end to end of the plurality of first flow paths 5a. With this configuration, the finished surface 2 can be efficiently cooled by flowing water through the plurality of first flow paths 5a and the second flow path 5b1.

[0034] The flow path connection section 5b has a plurality of second flow paths 5b1 arranged along the finished surface 2. With the above configuration, the finished surface 2 can be efficiently cooled by flowing water through the plurality of first flow paths 5a and the plurality of second flow paths 5b1.

[0035] Each parallel flow path 5 has a group of outlets 6 (see Figure 4) consisting of multiple outlets 6a arranged along the first flow path 5a, corresponding to each first flow path 5a. With this configuration, the finished surface 2 can be efficiently cooled by discharging water from the group of outlets 6. The multiple outlets 6a can be arranged at equal intervals, for example, as shown in Figure 4. Note that the group of outlets 6 is not shown in Figures 1 to 3.

[0036] The building timber 1 has a board 9 with grooves 8 that constitute parallel flow channels 5, and is formed from laminated timber 10. With the above configuration, building timber 1 of a desired size can be easily realized. The building timber 1 may also be formed from orthogonal laminated timber, in which the lamination direction of the laminated timber 10 and the lamination direction of the lamina are the same, instead of laminated timber 10.

[0037] The laminated timber 10 is formed from the boards 9 described above. With this configuration, it is possible to more easily realize building timber 1 having a finished surface 2 of a desired size.

[0038] The laminated timber 10 consists of multiple boards 9, each having grooves 8 that constitute parallel flow channels 5. With this configuration, building timber 1 having a finished surface 2 of a desired size that can be cooled efficiently can be easily realized.

[0039] The laminated timber 10 consists of a plurality of boards 9, each having grooves 8 that constitute a first channel 5a and through holes 11 that constitute a second channel 5b1. With this configuration, it is possible to easily realize building timber 1 having a finished surface 2 of a desired size that can be efficiently cooled by the plurality of first channels 5a and second channels 5b1.

[0040] The laminated timber 10 consists of multiple boards 9, each having grooves 8 that constitute a first channel 5a and multiple through holes 11 that constitute the multiple second channels 5b1. With this configuration, it is possible to easily realize building timber 1 of a desired size having a finished surface 2 that can be efficiently cooled by the multiple first channels 5a and the multiple second channels 5b1.

[0041] The building timber 1 has a plurality of first plugs 12 that close the plurality of through holes 11 in the first plate 9 that forms the first end of the building timber 1, and a plurality of second plugs 12 that close the plurality of through holes 11 in the second plate 9 that forms the second end of the building timber 1. With the above configuration, the plurality of second flow channels 5b1 that can efficiently cool the finished surface 2 can be easily realized.

[0042] In this embodiment, the fire-resistant structure 13 made of wood includes building timber 1. With the above configuration, a fire-resistant structure 13 made of wood can be realized that is excellent in reducing carbon dioxide emissions and is reusable. The fire-resistant structure 13 may also be configured to exhibit non-combustible properties in addition to fire resistance properties due to the building timber 1.

[0043] <Second Embodiment> As shown in Figures 5 to 7, in the second embodiment of the present invention, the building timber 1 has a finished surface 2 and a fire-resistant channel 3. The fire-resistant channel 3 has an inlet 4, a hollow parallel channel 5 that connects to the inlet 4 and extends parallel to the finished surface 2, and an outlet 6a that connects to the parallel channel 5 and opens to the finished surface 2. In the event of a fire, water is passed through the inlet 4 and discharged through the parallel channel 5 and out of the outlet 6a.

[0044] The building timber 1 can hold water flowing through the fire-resistant channel 3. The finished surface 2 of the building timber 1 can hold water flowing through the fire-resistant channel 3. The building timber 1 can absorb water flowing through the fire-resistant channel 3 via the surface of the parallel channel 5.

[0045] The inlet 4 is provided on the finished surface 2. The inlet 4 may also be provided on the surface 7 opposite to the finished surface 2.

[0046] The parallel flow channels 5 have a plurality of first flow channels 5a that are arranged along the finished surface 2, parallel to each other and extending parallel to the finished surface 2, and a flow channel connection section 5b that connects all the first flow channels 5a to each other. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2 and extend parallel to the finished surface 2 from end to end of the plurality of first flow channels 5a. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2.

[0047] Each parallel flow path 5 has a group of outlets 6 (see Figure 7) consisting of multiple outlets 6a arranged along the first flow path 5a, corresponding to each first flow path 5a. These multiple outlets 6a can be arranged at equal intervals, for example, as shown in Figure 7. Note that the illustration of the group of outlets 6 is omitted in Figures 5 and 6.

[0048] The building timber 1 has a board 9 with grooves 8 that constitute parallel flow channels 5, and is formed from laminated timber 10. The building timber 1 may also be formed from orthogonal laminated timber, in which the lamination direction of the laminated timber 10 and the lamination direction of the lamina are the same.

[0049] The laminated timber 10 is formed from the above-mentioned boards 9. With this configuration, building timber 1 of a desired size can be easily realized.

[0050] The above plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a. With the above configuration, it is easy to realize building timber 1 having a finished surface 2 that can be efficiently cooled by the plurality of first channels 5a. The above plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a and a groove 8 that constitutes a second channel 5b1. With the above configuration, it is easy to realize building timber 1 having a finished surface 2 that can be efficiently cooled by the plurality of first channels 5a and the second channel 5b1. The above plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a and a plurality of grooves 8 that constitute the plurality of second channels 5b1. With the above configuration, it is easy to realize building timber 1 having a finished surface 2 that can be efficiently cooled by the plurality of first channels 5a and the plurality of second channels 5b1.

[0051] In this embodiment, the fire-resistant structure 13 made of wood has building timber 1. The fire-resistant structure 13 made of wood has a plurality of building timbers 1 that are joined together in a direction along the finished surface 2. With the above configuration, a fire-resistant structure 13 made of wood having a finished surface 2 of a desired size can be easily realized.

[0052] <Third Embodiment> As shown in Figures 8 to 10, in the third embodiment of the present invention, the building timber 1 has a finished surface 2 and a fire-resistant channel 3. The fire-resistant channel 3 has an inlet 4, a hollow parallel channel 5 that connects to the inlet 4 and extends parallel to the finished surface 2, and an outlet 6a that connects to the parallel channel 5 and opens to the finished surface 2. In the event of a fire, water is passed through the inlet 4 and discharged through the parallel channel 5 and out of the outlet 6a.

[0053] The building timber 1 can hold water flowing through the fire-resistant channel 3. The finished surface 2 of the building timber 1 can hold water flowing through the fire-resistant channel 3. The building timber 1 can absorb water flowing through the fire-resistant channel 3 via the surface of the parallel channel 5.

[0054] The inlet 4 is provided on the finished surface 2. The inlet 4 may also be provided on the surface 7 opposite to the finished surface 2.

[0055] The parallel flow channels 5 have a plurality of first flow channels 5a that are arranged along the finished surface 2, parallel to each other and extending parallel to the finished surface 2, and a flow channel connection section 5b that connects all the first flow channels 5a to each other. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2 and extend parallel to the finished surface 2 from end to end of the plurality of first flow channels 5a. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2.

[0056] Each parallel flow path 5 has a group of outlets 6 (see Figure 10) consisting of multiple outlets 6a arranged along the first flow path 5a, corresponding to each first flow path 5a. These multiple outlets 6a can be arranged at equal intervals, for example, as shown in Figure 10. Note that the illustration of the group of outlets 6 is omitted in Figures 8 and 9.

[0057] The building timber 1 has boards 9 having grooves 8 that constitute parallel flow channels 5, and is formed by orthogonal glued timber 14. The orthogonal glued timber 14 is formed from the boards 9. Alternatively, the boards 9 as sawn timber may be joined to the orthogonal glued timber 14. With the above configuration, building timber 1 of a desired size can be easily realized. The number of layers constituting the orthogonal glued timber 14 can be set as appropriate and may be even or odd.

[0058] The plate 9 has grooves 8 that constitute part of the plurality of first channels 5a. With this configuration, building timber 1 having a finished surface 2 that can be efficiently cooled by the plurality of first channels 5a can be easily realized. The plate 9 has a plurality of grooves 8 that constitute part of the plurality of first channels 5a. With this configuration, building timber 1 having a finished surface 2 that can be efficiently cooled by the plurality of first channels 5a can be even more easily realized.

[0059] The plate 9 has grooves 8 that constitute part of the plurality of first channels 5a and grooves 8 that constitute the second channels 5b1. With this configuration, it is easy to realize building timber 1 having a finished surface 2 that can be efficiently cooled by the plurality of first channels 5a and the second channels 5b1. The plate 9 has grooves 8 that constitute part of the plurality of first channels 5a and a plurality of grooves 8 that constitute the plurality of second channels 5b1. With this configuration, it is easy to realize building timber 1 having a finished surface 2 that can be efficiently cooled by the plurality of first channels 5a and the plurality of second channels 5b1.

[0060] The plate 9 has a plurality of grooves 8 that constitute part of the plurality of first channels 5a and a plurality of grooves 8 that constitute the second channels 5b1. With this configuration, it is possible to more easily realize building timber 1 having a finished surface 2 that can be efficiently cooled by the plurality of first channels 5a and the second channels 5b1. The plate 9 has a plurality of grooves 8 that constitute part of the plurality of first channels 5a and a plurality of grooves 8 that constitute the plurality of second channels 5b1. With this configuration, it is possible to more easily realize building timber 1 having a finished surface 2 that can be efficiently cooled by the plurality of first channels 5a and the plurality of second channels 5b1.

[0061] The above-mentioned plate 9 has an inlet 4. With the above configuration, the finished surface 2 can be cooled more efficiently by utilizing the multiple inlet 4 formed in the building timber 1.

[0062] In this embodiment, the fire-resistant structure 13 made of wood has building timber 1.

[0063] <Fourth Embodiment> As shown in Figures 11 to 13, in the fourth embodiment of the present invention, the building timber 1 has a finished surface 2 and a fire-resistant channel 3. The fire-resistant channel 3 has an inlet 4, a hollow parallel channel 5 that connects to the inlet 4 and extends parallel to the finished surface 2, and an outlet 6a that connects to the parallel channel 5 and opens to the finished surface 2. In the event of a fire, water passed through the inlet 4 can be discharged through the parallel channel 5 and out of the outlet 6a.

[0064] The building timber 1 can hold water flowing through the fire-resistant channel 3. The finished surface 2 of the building timber 1 can hold water flowing through the fire-resistant channel 3. The building timber 1 can absorb water flowing through the fire-resistant channel 3 via the surface of the parallel channel 5.

[0065] The inlet 4 is provided on the surface 7 opposite to the finished surface 2. The inlet 4 may also be provided on the finished surface 2.

[0066] The parallel flow channels 5 have a plurality of first flow channels 5a that are arranged along the finished surface 2, parallel to each other and extending parallel to the finished surface 2, and a flow channel connection section 5b that connects all the first flow channels 5a to each other. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2 and extend parallel to the finished surface 2 from end to end of the plurality of first flow channels 5a. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2.

[0067] Each parallel flow path 5 has a group of outlets 6 (see Figure 13) consisting of multiple outlets 6a arranged along the first flow path 5a, corresponding to each first flow path 5a. These multiple outlets 6a can be arranged at equal intervals, for example, as shown in Figure 13. Note that the illustration of the group of outlets 6 is omitted in Figures 11 and 12.

[0068] The building timber 1 has a first layer and a second layer of boards 9, each having grooves 8 that constitute parallel flow channels 5, and is formed by orthogonal glued timber 14. The orthogonal glued timber 14 is formed from the boards 9. Alternatively, the boards 9 as sawn timber may be joined to the orthogonal glued timber 14.

[0069] The first layer plate 9 has grooves 8 that constitute part of the plurality of first channels 5a.

[0070] The first layer of the board 9 has grooves 8 that constitute part of the plurality of first channels 5a, and the second layer of the board 9 has grooves 8 that constitute the second channel 5b1. With this configuration, it is possible to easily realize building timber 1 having a finished surface 2 that can be efficiently cooled by the plurality of first channels 5a and the second channel 5b1.

[0071] The plate 9 has a plurality of grooves 8 that constitute part of the plurality of first channels 5a, and the second layer plate 9 has grooves 8 that constitute the second channel 5b1. With this configuration, it is possible to more easily realize building timber 1 having a finished surface 2 that can be efficiently cooled by the plurality of first channels 5a and the second channel 5b1.

[0072] In this embodiment, the fire-resistant structure 13 made of wood has building timber 1.

[0073] <Fifth Embodiment> As shown in Figures 14 to 16, in the fifth embodiment of the present invention, the building timber 1 has a finished surface 2 and a fire-resistant channel 3. The fire-resistant channel 3 has an inlet 4, a hollow parallel channel 5 that connects to the inlet 4 and extends parallel to the finished surface 2, and an outlet 6a that connects to the parallel channel 5 and opens to the finished surface 2. In the event of a fire, water passed through the inlet 4 can be discharged through the parallel channel 5 and out of the outlet 6a.

[0074] The building timber 1 can hold water flowing through the fire-resistant channel 3. The finished surface 2 of the building timber 1 can hold water flowing through the fire-resistant channel 3. The building timber 1 can absorb water flowing through the fire-resistant channel 3 via the surface of the parallel channel 5.

[0075] The inlet 4 is provided on the finished surface 2. The inlet 4 may also be provided on the surface 7 opposite to the finished surface 2.

[0076] The parallel flow channels 5 have a plurality of first flow channels 5a that are arranged along the finished surface 2, parallel to each other and extending parallel to the finished surface 2, and a flow channel connection section 5b that connects all the first flow channels 5a to each other. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2 and extend parallel to the finished surface 2 from end to end of the plurality of first flow channels 5a. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2.

[0077] Each parallel flow path 5 has a group of outlets 6 (see Figure 16) consisting of multiple outlets 6a arranged along the first flow path 5a, corresponding to each first flow path 5a. These multiple outlets 6a can be arranged at equal intervals, for example, as shown in Figure 16. Note that the illustration of the group of outlets 6 is omitted in Figures 14 and 15.

[0078] The building timber 1 has a board 9 having grooves 8 that constitute parallel flow channels 5, and is formed from laminated timber 10. The board 9, as sawn timber, is joined to the laminated timber 10. With this configuration, building timber 1 of a desired size can be easily realized. The building timber 1 may also be formed from orthogonal laminated timber, in which the lamination direction of the laminated timber 10 and the lamination direction of the lamina are the same, instead of laminated timber 10.

[0079] The plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a. The plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a and a plurality of grooves 8 that constitute the second channels 5b1. The plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a and a plurality of grooves 8 that constitute the plurality of second channels 5b1.

[0080] In this embodiment, the fire-resistant structure 13 made of wood has building timber 1. The fire-resistant structure 13 made of wood has a plurality of building timbers 1 that are joined together in a direction along the finished surface 2.

[0081] <Sixth Embodiment> As shown in Figures 17 to 20, in the sixth embodiment of the present invention, the building timber 1 has a finished surface 2 and a fire-resistant channel 3. The fire-resistant channel 3 has an inlet 4, a hollow parallel channel 5 that connects to the inlet 4 and extends parallel to the finished surface 2, and an outlet 6a that connects to the parallel channel 5 and opens to the finished surface 2. In the event of a fire, water is passed through the inlet 4 and discharged through the parallel channel 5 and out of the outlet 6a.

[0082] The building timber 1 can hold water flowing through the fire-resistant channel 3. The finished surface 2 of the building timber 1 can hold water flowing through the fire-resistant channel 3. The building timber 1 can absorb water flowing through the fire-resistant channel 3 via the surface of the parallel channel 5.

[0083] The inlet 4 is provided on the finished surface 2. The inlet 4 may also be provided on the surface 7 opposite to the finished surface 2.

[0084] The parallel flow channels 5 have a plurality of first flow channels 5a that are arranged along the finished surface 2, parallel to each other and extending parallel to the finished surface 2, and a flow channel connection section 5b that connects all the first flow channels 5a to each other. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2 and extend parallel to the finished surface 2 from end to end of the plurality of first flow channels 5a. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2.

[0085] The parallel flow channels 5 consist of a first flow channel group 5A, which is arranged along the finished surface 2, parallel to each other, and extends parallel to the finished surface 2, with the inner end of the outlet 6a being open, and a second flow channel group 5B1, which consists of a plurality of second flow channels 5b1, which are arranged along the finished surface 2 and extend parallel to the finished surface 2 from end to end of the plurality of first flow channels 5a, and at least one first flow channel 5a has a water retention layer 5c that protrudes toward the finished surface 2 side than all of the second flow channels 5b1 connected to that first flow channel 5a. With the above configuration, the fire resistance of the finished surface 2 can be increased by the water retained in the water retention layer 5c when water flows through the parallel flow channels 5.

[0086] The first flow channel group 5A includes a first discharge channel 5a1 which has an outlet 6a but does not have a water retention layer 5c as the first flow channel 5a, and a first water retention channel 5a2 which has a water retention layer 5c but does not have an outlet 6a as the first flow channel 5a. With the above configuration, by passing water through the parallel flow channel 5, the finished surface 2 can be cooled by discharging water from the outlet 6a of the first discharge channel 5a1, while the fire resistance of the finished surface 2 can be increased by the water retained in the water retention layer 5c of the first water retention channel 5a2.

[0087] Each parallel flow path 5 has a group of outlets 6 consisting of multiple outlets 6a arranged along each of the first discharge flow paths 5a1, corresponding to each first discharge flow path 5a1. These multiple outlets 6a can be arranged at equal intervals, for example, as shown in Figure 18.

[0088] The building timber 1 has a board 9 having grooves 8 that constitute parallel flow channels 5, and is formed from orthogonal glued timber 14. The board 9 as sawn timber is joined to the orthogonal glued timber 14. Alternatively, the board 9 as sawn timber may be joined to the orthogonal glued timber 14.

[0089] The plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a. The plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a and a plurality of grooves 8 that constitute the second channels 5b1. The plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a and a plurality of grooves 8 that constitute the plurality of second channels 5b1.

[0090] In this embodiment, the fire-resistant structure 13 made of wood has building timber 1.

[0091] <Seventh Embodiment> As shown in Figures 21 to 23, in the seventh embodiment of the present invention, the building timber 1 has a finished surface 2 and a fire-resistant channel 3. The fire-resistant channel 3 has an inlet 4, a hollow parallel channel 5 that connects to the inlet 4 and extends parallel to the finished surface 2, and an outlet 6a that connects to the parallel channel 5 and opens to the finished surface 2. In the event of a fire, water passed through the inlet 4 can be discharged through the parallel channel 5 and out of the outlet 6a.

[0092] The building timber 1 can hold water flowing through the fire-resistant channel 3. The finished surface 2 of the building timber 1 can hold water flowing through the fire-resistant channel 3. The building timber 1 can absorb water flowing through the fire-resistant channel 3 via the surface of the parallel channel 5.

[0093] The inlet 4 is provided on the surface 7 opposite to the finished surface 2. The inlet 4 may also be provided on the finished surface 2.

[0094] The parallel flow channels 5 have a plurality of first flow channels 5a that are arranged along the finished surface 2, parallel to each other and extending parallel to the finished surface 2, and a flow channel connection section 5b that connects all the first flow channels 5a to each other. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2 and extend parallel to the finished surface 2 from end to end of the plurality of first flow channels 5a. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2.

[0095] The parallel flow channels 5 consist of a first flow channel group 5A, which is arranged along the finished surface 2, parallel to each other and extending parallel to the finished surface 2, with the inner end of the outlet 6a being open, and a second flow channel group 5B1, which consists of a plurality of second flow channels 5b1, which are arranged along the finished surface 2 and extend parallel to the finished surface 2 from end to end of the plurality of first flow channels 5a, and at least one first flow channel 5a has a water retention layer 5c that protrudes toward the finished surface 2 side than all of the second flow channels 5b1 connected to the first flow channel 5a. Each first flow channel 5a has a water retention layer 5c that protrudes toward the finished surface 2 side than all of the second flow channels 5b1 connected to the first flow channel 5a.

[0096] The first channel group 5A has a first channel 5a3 for draining stagnant water, which has a water-retaining layer 5c and an outlet 6a. With the above configuration, by passing water through the parallel channel 5, the finished surface 2 can be cooled by draining water from the outlet 6a of the first channel 5a3 for draining stagnant water, while the fire resistance of the finished surface 2 can be increased by the water retained in the water-retaining layer 5c of the first channel 5a3 for draining stagnant water. The multiple first channels 5a are arranged in a vertical direction, and in the first channel group 5A, the first channel 5a3 for draining stagnant water is provided only at the upper end of the building timber 1. In the first channel group 5A, only one first channel 5a3 for draining stagnant water is provided only at the top of the building timber 1. With the above configuration, the entire finished surface 2 can be efficiently cooled by draining water from the outlet 6a of the first channel 5a3 for draining stagnant water with a small amount of water flow. In this embodiment, the building timber 1 is used as a wall material, but it may also be used as a ceiling material or a floor material. In other words, the finished surface 2 may be used in a horizontal position, for example. The number and arrangement of the first water discharge channels 5a3 provided in the first channel group 5A can be set according to the conditions.

[0097] The parallel channel 5 corresponds to the first channel 5a3 for draining stagnant water and has a group of outlets 6a arranged along the first channel 5a3 for draining stagnant water. The multiple outlets 6a can be arranged at equal intervals, for example, as shown in Figure 22. The number and arrangement of outlets 6a in the group of outlets 6 can be set according to the conditions.

[0098] The building timber 1 has a board 9 having grooves 8 that constitute parallel flow channels 5, and is formed from orthogonal glued timber 14. The board 9, as sawn timber, is joined to the orthogonal glued timber 14.

[0099] The plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a. The plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a and a plurality of grooves 8 that constitute the second channels 5b1. The plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a and a plurality of grooves 8 that constitute the plurality of second channels 5b1.

[0100] In this embodiment, the fire-resistant structure 13 made of wood has building timber 1.

[0101] <Eighth Embodiment> As shown in Figures 24 to 26, in the eighth embodiment of the present invention, the building timber 1 has a finished surface 2 and a fire-resistant channel 3. The fire-resistant channel 3 has an inlet 4, a hollow parallel channel 5 that connects to the inlet 4 and extends parallel to the finished surface 2, and an outlet 6a that connects to the parallel channel 5 and opens to the finished surface 2. In the event of a fire, water is passed through the inlet 4 and discharged through the parallel channel 5 and out of the outlet 6a.

[0102] The building timber 1 can hold water flowing through the fire-resistant channel 3. The finished surface 2 of the building timber 1 can hold water flowing through the fire-resistant channel 3. The building timber 1 can absorb water flowing through the fire-resistant channel 3 via the surface of the parallel channel 5.

[0103] The inlet 4 is provided on the surface 7 opposite to the finished surface 2. The inlet 4 may also be provided on the finished surface 2.

[0104] The parallel flow channels 5 have a plurality of first flow channels 5a that are arranged along the finished surface 2, parallel to each other and extending parallel to the finished surface 2, and a flow channel connection section 5b that connects all the first flow channels 5a to each other. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2 and extend parallel to the finished surface 2 from end to end of the plurality of first flow channels 5a. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2.

[0105] The parallel flow channels 5 consist of a first flow channel group 5A, which is arranged along the finished surface 2, parallel to each other, and extends parallel to the finished surface 2, with the inner end of the outlet 6a being open, and a second flow channel group 5B1, which consists of a plurality of second flow channels 5b1, which are arranged along the finished surface 2 and extend parallel to the finished surface 2 from end to end of the plurality of first flow channels 5a, and at least one second flow channel 5b1 has a water retention layer 5c that protrudes toward the finished surface 2 side than all the first flow channels 5a connected to the second flow channel 5b1. Each second flow channel 5b1 has a water retention layer 5c that protrudes toward the finished surface 2 side than all the first flow channels 5a connected to the second flow channel 5b1. With the above configuration, the fire resistance of the finished surface 2 can be increased by the water retained in the water retention layer 5c when water flows through the parallel flow channels 5.

[0106] The first channel group 5A has a first discharge channel 5a1 that has an outlet 6a without a water retention layer 5c as the first channel 5a. The multiple first channels 5a are arranged in a vertical direction, and the first channel group 5A has a first discharge channel 5a1 only at the upper end of the building timber 1. The first channel group 5A has only one first discharge channel 5a1 at the very top of the building timber 1. With the above configuration, the entire finished surface 2 can be efficiently cooled by discharging water from the outlet 6a of the first discharge channel 5a1 with a small amount of water flow. In this embodiment, the building timber 1 is used as a wall material, but it may also be used as a ceiling material or floor material. That is, the finished surface 2 may be used horizontally, for example. The number and arrangement of the first discharge channels 5a1 provided in the first channel group 5A can be set according to the conditions.

[0107] The parallel flow path 5 corresponds to the first discharge flow path 5a1 and has a group of discharge ports 6 consisting of multiple discharge ports 6a arranged along the first discharge flow path 5a1. The number and arrangement of discharge ports 6a in the group of discharge ports 6 can be set according to the conditions.

[0108] The building timber 1 has a board 9 having grooves 8 that constitute parallel flow channels 5, and is formed from orthogonal glued timber 14. The board 9, as sawn timber, is joined to the orthogonal glued timber 14.

[0109] The plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a. The plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a and a plurality of grooves 8 that constitute the second channels 5b1. The plate 9 has a plurality of grooves 8 that constitute the plurality of first channels 5a and a plurality of grooves 8 that constitute the plurality of second channels 5b1.

[0110] In this embodiment, the fire-resistant structure 13 made of wood has building timber 1.

[0111] <Ninth Embodiment> As shown in Figures 27 to 30, in the ninth embodiment of the present invention, the building timber 1 has a finished surface 2 and a fire-resistant channel 3. The fire-resistant channel 3 has an inlet 4 (first inlet 4'), a hollow parallel channel 5 (first parallel channel 5') that connects to the inlet 4 and extends parallel to the finished surface 2, and an outlet 6a (first outlet 6a') that connects to the parallel channel 5 and opens to the finished surface 2. In the event of a fire, water passed through the inlet 4 can be discharged through the parallel channel 5 and out of the outlet 6a.

[0112] The building timber 1 can hold water flowing through the fire-resistant channel 3. The finished surface 2 of the building timber 1 can hold water flowing through the fire-resistant channel 3. The building timber 1 can absorb water flowing through the fire-resistant channel 3 via the surface of the parallel channel 5.

[0113] The inlet 4 is provided on the surface 7 opposite to the finished surface 2. The inlet 4 may also be provided on the finished surface 2.

[0114] The parallel flow channels 5 have a plurality of first flow channels 5a that are arranged along the finished surface 2, parallel to each other and extending parallel to the finished surface 2, and a flow channel connection section 5b that connects all the first flow channels 5a to each other. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2 and extend parallel to the finished surface 2 from end to end of the plurality of first flow channels 5a. The flow channel connection section 5b has a plurality of second flow channels 5b1 that are arranged along the finished surface 2.

[0115] The parallel flow channels 5 consist of a first flow channel group 5A, which is arranged along the finished surface 2, parallel to each other, and extends parallel to the finished surface 2, with the inner end of the outlet 6a being open, and a second flow channel group 5B1, which consists of a plurality of second flow channels 5b1, which are arranged along the finished surface 2 and extend parallel to the finished surface 2 from end to end of the plurality of first flow channels 5a, and at least one second flow channel 5b1 has a water retention layer 5c that protrudes toward the finished surface 2 side than all the first flow channels 5a connected to the second flow channel 5b1. Each second flow channel 5b1 has a water retention layer 5c that protrudes toward the finished surface 2 side than all the first flow channels 5a connected to the second flow channel 5b1. With the above configuration, the fire resistance of the finished surface 2 can be increased by the water retained in the water retention layer 5c when water flows through the parallel flow channels 5.

[0116] The first channel group 5A has a first discharge channel 5a1 which has an outlet 6a without a water retention layer 5c as the first channel 5a. The first channel group 5A has a plurality of first discharge channels 5a1. The plurality of first discharge channels 5a1 are arranged in a vertical direction. The parallel channel 5 has an outlet group 6 consisting of a plurality of outlets 6a arranged along each first discharge channel 5a1, corresponding to each first discharge channel 5a1.

[0117] The fire-resistant channel 3 has a second inlet 4", a hollow second parallel channel 5" that connects to the second inlet 4" and extends parallel to the finished surface 2 on the opposite side of the finished surface 2 from the first parallel channel 5', and a second outlet 6a" that connects to the second parallel channel 5" and opens to the finished surface 2. In the event of a fire, water passed through the second inlet 4" can be discharged through the second parallel channel 5" and then discharged from the second outlet 6a". With the above configuration, the finished surface 2 can be cooled by the second parallel channel 5" in addition to the first parallel channel 5', thus further improving fire resistance. Furthermore, since the second parallel channel 5" is located on the opposite side of the finished surface from the first parallel channel 5' which has an aquifer 5c, the aquifer 5c of the first parallel channel 5' can be located closer to the finished surface 2, thus further improving fire resistance. The second parallel channel 5" may be configured to connect to the second inlet 4" and extend parallel to the finished surface 2 on the side of the finished surface 2 than the first parallel channel 5'.

[0118] The second parallel flow path 5" has a plurality of first flow paths 5a that are aligned along the finished surface 2, parallel to each other and extending parallel to the finished surface 2, and a flow path connection portion 5b that connects all the first flow paths 5a to each other. The flow path connection portion 5b of the second parallel flow path 5" has a second flow path 5b1 that is aligned along the finished surface 2 and extends parallel to the finished surface 2 from end to end of the plurality of first flow paths 5a of the second parallel flow path 5". The flow path connection portion 5b of the second parallel flow path 5" has a plurality of second flow paths 5b1 that are aligned along the finished surface 2.

[0119] The second parallel flow path 5" has a first flow path group 5A consisting of a plurality of first flow paths 5a that are arranged along the finished surface 2, parallel to each other and extending parallel to the finished surface 2, with the inner end of the second outlet 6a" opening, and a second flow path group 5B1 consisting of a plurality of second flow paths 5b1 that are arranged along the finished surface 2 and extend parallel to the finished surface 2 from end to end of the plurality of first flow paths 5a. The first flow path group 5A of the second parallel flow path 5" has a first discharge flow path 5a1 that has a second outlet 6a" without a water retention layer 5c as the first flow path 5a. The first flow path group 5A of the second parallel flow path 5" has a plurality of first discharge flow paths 5a1. The plurality of first discharge flow paths 5a1 of the second parallel flow path 5" are arranged in a horizontal direction. The second parallel flow path 5" has an outlet group 6 consisting of a plurality of second outlets 6a" that are arranged along the first discharge flow path 5a1, corresponding to each first discharge flow path 5a1.

[0120] The second inlet 4" is provided on the finished surface 2 of the building timber 1. The second inlet 4" may also be provided on the surface 7 opposite to the finished surface 2.

[0121] The building timber 1 has a first layer of board 9 having grooves 8 that constitute a first parallel channel 5', and a second layer of board 9 having grooves 8 that constitute a second parallel channel 5'', and is formed by orthogonal glued timber 14. The first layer of board 9, as sawn timber, is joined to the second layer of board 9, which is also sawn timber. The second layer of board 9 is joined to the orthogonal glued timber 14.

[0122] The first layer plate 9 has grooves 8 that constitute a part of the first parallel flow path 5'. The first layer plate 9 has a plurality of grooves 8 that constitute a part of the plurality of first flow paths 5a of the first parallel flow path 5'. The first layer plate 9 has a plurality of grooves 8 that constitute a part of the plurality of second flow paths 5b1 of the first parallel flow path 5'. With the above configuration, the first parallel flow path 5' can be easily realized.

[0123] The second layer plate 9 has grooves 8 that constitute a part of the second parallel flow channel 5". The second layer plate 9 has a plurality of grooves 8 that constitute a part of the plurality of first flow channels 5a of the second parallel flow channel 5". The second layer plate 9 has a plurality of grooves 8 that constitute a part of the plurality of second flow channels 5b1 of the second parallel flow channel 5". With the above configuration, the second parallel flow channel 5" can be easily realized.

[0124] In this embodiment, the fire-resistant structure 13 made of wood has building timber 1.

[0125] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and the embodiments described above can be modified in various ways without departing from the spirit of the present invention.

[0126] For example, the building timber 1 has a board 9 having grooves 8 that constitute a parallel channel 5, and may be formed from sawn timber, laminated veneer timber, plywood, glued laminated timber 10 or orthogonal glued laminated timber 14 or any combination thereof. The building timber 1 may have both sides as finished surfaces 2. If fire resistance is required on both sides, for example, the building timber 1 has a first finished surface 2, a first fire-resistant channel 3, a second finished surface 2 which is the surface 7 opposite to the first finished surface 2, and a second fire-resistant channel 3, the first fire-resistant channel 3 having a first inlet 4, a hollow first parallel channel 5 that connects to the first inlet 4 and extends parallel to the first finished surface 2, and a first outlet 6a that connects to the first parallel channel 5 and opens to the first finished surface 2, and in the event of a fire the first guide The water flowing through the inlet 4 can be discharged from the first outlet 6a through the first parallel flow path 5, and the second fire-resistant flow path 3 has a second inlet 4, a hollow second parallel flow path 5 that connects to the second inlet 4 and extends parallel to the second finished surface 2, and a second outlet 6a that connects to the second parallel flow path 5 and opens to the second finished surface 2, so that in the event of a fire, the water flowing through the second inlet 4 can be discharged from the second outlet 6a through the second parallel flow path 5. [Explanation of Symbols]

[0127] 1 Architectural wood 2. Finished surface 3 Fireproof channel 4 Inlet 4' First Inlet 4" Second Inlet 5 Parallel channels 5' First parallel channel 5” Second parallel channel 5a First channel 5A First channel group 5a1 First discharge channel 5a2 First channel for retained water 5a3 First channel for draining stagnant water 5b Flow channel connection 5b1 Second channel 5B1 Second channel group 5c aqueous layer 6 Outlet group 6a Outlet 6a' First outlet 6a” Second outlet 7 surface 8 grooves 9 boards 10 Laminated wood 11 Through holes 12 Plug body 13 Wooden fireproof structure 14. Cross-laminated timber

Claims

1. Building timber used as wall material, ceiling material, or floor material, It has a finished surface and a fire-resistant channel, The fire-resistant channel has an inlet, a hollow parallel channel that connects to the inlet and extends parallel to the finished surface, and an outlet that connects to the parallel channel and opens to the finished surface, and in the event of a fire, water that flows through the inlet can be discharged through the parallel channel and out through the outlet. The parallel flow path comprises a first flow path group consisting of a plurality of first flow paths that are arranged along the finished surface, parallel to each other and extending parallel to the finished surface, with the inner end of the discharge port opening, and a second flow path group consisting of a plurality of second flow paths that are arranged along the finished surface and extend parallel to the finished surface from end to end of the plurality of first flow paths. At least one of the first channels has a water-retaining layer that protrudes toward the finished surface side than all of the second channels connected to the first channel, or at least one of the second channels has a water-retaining layer that protrudes toward the finished surface side than all of the first channels connected to the second channel. Building timber formed from laminated timber or orthogonal laminated timber, having a plate with grooves constituting the parallel flow channels.

2. The building timber according to claim 1, which can retain water flowing through the fire-resistant channel.

3. The building timber according to claim 2, wherein the finished surface can retain the water flowing through the fire-resistant channel.

4. The building timber according to claim 2, which can absorb water flowing through the fire-resistant channel via the surface of the parallel channel.

5. The inlet is provided on the surface opposite to the finished surface or on the finished surface, as described in claim 1.

6. The building timber according to claim 1, wherein the parallel flow channels include a plurality of first flow channels that are arranged along the finished surface, parallel to each other and extending parallel to the finished surface, and a flow channel connection portion that allows all of the first flow channels to pass through each other.

7. The building timber according to claim 6, wherein the flow channel connection portion has a second flow channel that is arranged along the finished surface and extends parallel to the finished surface from end to end of the plurality of first flow channels.

8. The building timber according to claim 6, wherein the parallel flow path has a group of outlets consisting of a plurality of outlets arranged along the first flow path, corresponding to each of the first flow paths.

9. The building timber according to claim 1, wherein the first channel group comprises a first discharge channel having the discharge port without the water retention layer, and a first water retention channel having the water retention layer without the discharge port, as the first channel.

10. The building timber according to claim 1, wherein the first channel group has a first channel for draining stagnant water, which has the stagnant water layer and the outlet, as the first channel.

11. The building timber according to claim 1, wherein the second channel group has a second channel for retaining water that has a water retention layer but does not have an outlet as the second channel.

12. The fire-resistant channel comprises a second inlet, a hollow second parallel channel that connects to the second inlet and extends parallel to the finished surface on the opposite side of the finished surface or on the side of the finished surface from the parallel channel, and a second outlet that connects to the second parallel channel and opens to the finished surface, wherein in the event of a fire, water passed through the second inlet can be discharged through the second parallel channel and out through the second outlet, as described in claim 1.

13. The second inlet is provided on the outer surface of the building timber according to claim 12.

14. A fire-resistant structure made of wood, comprising the building timber described in claim 1.

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