Grid device

Abstract

To prevent inhibiting evacuation action of a resident and the like, while allowing heat accompanying a fire to be discharged to the outside.SOLUTION: A surface lattice device includes: a surface lattice body which can be freely mounted on a mounting object part, and in which a plurality of louvers 3 is provided openably / closably; and a forcible opening part 10 for forcibly bringing the plurality of louvers 3 into an open state, when the surface lattice body comes into a high-temperature state.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a surface grille device that includes a surface grille body that is provided with a plurality of louvers that can be opened and closed, and that can be attached to an attachment target portion. [Background technology]

[0002] The above-mentioned surface grille devices are installed, for example, on windows facing common corridors in apartment buildings and other collective housing to ensure security and privacy. The surface grille device is equipped with a rectangular surface grille body equipped with multiple louvers that can be opened and closed freely, and the surface grille body is attached to the outdoor side of the window (see, for example, Patent Documents 1 and 2).

[0003] With such grille devices, if a fire breaks out indoors, depending on whether the louvers are open or closed, it may be difficult to dissipate the heat generated by the fire outdoors. Therefore, in recent years, there has been a demand for grille devices that incorporate measures to prevent the spread of fire.

[0004] Therefore, the surface grille devices described in Patent Documents 1 and 2 are equipped with an attachment section that attaches the surface grille body to an attachment target such as a window so that it can swing between an open position and a closed position, and an opening movement section that moves the surface grille body from the closed position to the open position when the surface grille body becomes hot. The open position is a position where the surface grille body is swung from the closed position, in which the entire window is blocked, to the outdoors (away from the window) using the lower side of the surface grille body as a fulcrum, and heat associated with a fire is radiated outdoors through the open space between the window and the surface grille body. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2021-25244 [Patent Document 2] Patent Publication No. 2021-75973 Summary of the Invention [Problem to be solved by the invention]

[0006] In the surface grille devices described in Patent Documents 1 and 2, when a fire breaks out indoors, the surface grille body becomes hot and is forcibly moved from the closed position to the open position. However, the open position protrudes further outdoors than the closed position, which is the original installation position, and the surface grille body is located in a position that protrudes further outdoors (towards the common corridor) than the original installation position. In this case, if a fire breaks out, residents may evacuate through the common corridor, and the surface grille body may get in the way of the evacuating residents or come into contact with them, hindering their evacuation.

[0007] Furthermore, depending on the installation conditions of the grille body, there may be other objects installed below or outside the grille device. In such cases, the other objects get in the way, making it impossible to move the grille body to the appropriate open position, and preventing the heat from inside the room from being properly dissipated to the outdoors.

[0008] In light of this situation, the main objective of the present invention is to provide a surface grille device that can dissipate heat associated with a fire outdoors while preventing it from hindering the evacuation actions of residents and others. [Means for solving the problem]

[0009] A first characteristic configuration of the present invention is a surface grille body that can be attached to an attachment target portion and has a plurality of louvers that can be opened and closed; The grille body is provided with a forced opening section that forcibly opens the plurality of louvers to an open state when the grille body becomes hot.

[0010] With this configuration, if a fire breaks out indoors, the grille body will become hot, and the forced opening section will force the multiple louvers to open. This allows heat from the indoor side to be dissipated to the outdoors through the space opened by the multiple louvers. Furthermore, the grille body itself remains in its original installation position, so it will not move to a position that protrudes outdoors. This allows heat from a fire to be dissipated outdoors without hindering the evacuation of residents and others.

[0011] A second characteristic configuration of the present invention is that a surface grille mounting portion is provided that can be freely mounted to the mounting target portion with the surface grille body spaced apart, The surface grille mounting portion is disposed in a state in which it closes the space between the mounting target portion and the surface grille body in the vertical and horizontal directions, The feature is that a ventilation section is provided that allows free ventilation between the space between the surface grille body and the mounting target portion closed by the surface grille mounting section and the outer space of the space.

[0012] According to this configuration, a ventilation section is provided that allows free ventilation between the space between the mounting target portion blocked by the grille mounting section and the grille body and the space outside it, so that regardless of the open / close state of the louvers, air from the indoor side can be discharged to the outdoor side through the ventilation section, or conversely, air can be taken in from the outdoor side to the indoor side, allowing for optimal ventilation using the ventilation section.

[0013] Furthermore, in the event of a fire inside the room, the indoor air can be discharged to the outdoors through the ventilation section, in addition to the louvers, so that the heat inside the room can be dissipated to the outdoors. This allows the heat inside the room to be dissipated to the outdoors by both opening the louvers through the forced opening section and the ventilation section, and this heat dissipation can be carried out efficiently and effectively.

[0014] A third characteristic configuration of the present invention is that the ventilation section is arranged at a position corresponding to the upper side in the space between the mounting target section blocked by the surface grille mounting section and the surface grille body.

[0015] According to this configuration, the ventilation section is arranged at a position corresponding to the upper side of the space blocked by the surface grille mounting section, so that the air that is heated and rises when a fire occurs can be efficiently discharged to the outdoors through the ventilation section, and the heat from the indoor side can be efficiently dissipated to the outdoors.

[0016] A fourth characteristic configuration of the present invention is a louver operation unit that operates the plurality of louvers so as to open and close the plurality of louvers in response to manual operation by the manual operation unit, A surface grille device as described in any one of claims 1 to 3, wherein the forced opening section is provided with a forced opening operating section that operates the louver operating section so as to forcibly open the multiple louvers to an open state when the surface grille body becomes hot.

[0017] According to this configuration, when a user manually operates the manual operation unit, the louver operation unit opens or closes the multiple louvers in accordance with the manual operation, so that the multiple louvers can be operated to the open / closed state intended by the user. Moreover, the forced opening operation unit forcibly opens the multiple louvers to the open state by operating the louver operation unit, so that the operation unit can be used for both purposes, and there is no need to provide a dedicated operation unit for forced opening, thereby simplifying the configuration.

[0018] A fifth characteristic configuration of the present invention is provided with a lock unit that locks manual operation by the manual operation unit, The louver operation unit is a first louver operating unit that opens or closes a first louver among the plurality of louvers in response to manual operation by the manual operating unit; a second louver operating unit that operates a plurality of second louvers other than the first louver to open and close in conjunction with the opening and closing of the first louver; The forced opening operating unit operates the second louver operating unit so that, when the surface grille body becomes hot, the multiple second louvers are forcibly opened to an open state regardless of the open / closed state of the first louvers.

[0019] According to this configuration, when a user manually operates the manual operation unit, the first louver operation unit opens or closes the first louvers in response to the manual operation, and the second louver operation unit opens or closes the multiple second louvers in response to the opening or closing operation of the first louvers, so that the first and second louvers can be opened or closed in response to manual operation by the user.Since a lock unit that locks manual operation by the manual operation unit is provided, it is possible to prevent erroneous operation of the manual operation unit, etc.

[0020] By locking the manual operation unit with the locking unit, the open / closed state of the first louver is also locked by the first louver operation unit. Therefore, even if you try to forcefully open the first louver, you may not be able to open it properly, and you may end up in a situation where not only the first louver but also the second louver cannot be forced open. Furthermore, if you try to forcefully open the locked first louver, excessive force may be applied to the first louver and the first louver operation unit, which may result in damage to the first louver or the first operation unit.

[0021] Therefore, in this configuration, the forced opening operation unit operates the second louver operation unit regardless of the open / closed state of the first louvers, and operation of the second louver operation unit forcibly opens the multiple second louvers to an open state regardless of the open / closed state of the first louvers. As a result, the open / closed state of the first louvers remains locked (maintained), but opening the multiple second louvers allows heat from the indoor side to be sufficiently dissipated to the outdoor side, while also appropriately preventing damage to the first louvers and the first louver operation unit.

[0022] A sixth characteristic configuration of the present invention is that the manual operation unit, the lock unit, and the first louver operation unit are disposed on one end side of the surface grille body in the left-right direction, The second louver operating portion and the forced opening operating portion are disposed on the other end side of the surface grille body in the left-right direction.

[0023] According to this configuration, the manual operation unit, lock unit, and first louver operation unit are disposed on one left-right end of the surface grille body, and the second louver operation unit and the forced opening operation unit are disposed on the other left-right end of the surface grille body on the opposite side. This means that the adjacent components that should be linked are divided into two and disposed in a dispersed state on one side and the other left-right side of the surface grille body, resulting in a rational layout configuration that efficiently secures installation space for each component.

[0024] A seventh characteristic configuration of the present invention is that the manual operation unit is disposed on one side of the surface grating body in the left-right direction, a lock unit that locks the manual operation unit from manual operation, The plurality of louvers are arranged in a divided state on the same side as the manual operation unit and on the opposite side in the left-right direction of the surface grille body, The louver operation unit is a third louver operating unit that opens or closes a third louver among the plurality of louvers divided on the same side as the manual operating unit in response to manual operation by the manual operating unit; a fourth louver operating unit that operates to open or close a fourth louver corresponding to the third louver among the plurality of louvers divided on the side opposite to the manual operating unit in response to an opening or closing operation of the third louver; a fifth louver operating unit that operates to open or close a plurality of fifth louvers other than the fourth louver among the plurality of louvers divided on the side opposite to the manual operating unit in response to an opening or closing operation of the fourth louver; and a sixth louver operating unit that operates to open or close a plurality of sixth louvers other than the third louver among the plurality of louvers divided on the same side as the manual operating unit in response to the opening or closing operation of the fifth louver, The forced opening operating unit operates the fifth louver operating unit so as to forcibly open the plurality of fifth louvers and the plurality of sixth louvers to the open state when the surface grille body becomes hot, regardless of the open / closed state of the third louvers and the fourth louvers.

[0025] According to this configuration, when a user manually operates the manual operation unit, the third louver operation unit opens or closes the third louver in response to the manual operation, the fourth louver operation unit opens or closes the multiple fourth louvers in response to the opening or closing operation of the third louver, the fifth louver operation unit opens or closes the fifth louver in response to the opening or closing operation of the fourth louver, and the sixth louver operation unit opens or closes the multiple sixth louvers in response to the opening or closing operation of the fifth louver, so that all of the third to sixth louvers can be opened or closed in response to manual operation by the user. Thus, by arranging the manual operation unit on only one side in the left or right direction of the surface grille main body, it is possible to open or close both of the louvers divided on the same side and the opposite side to the manual operation unit.

[0026] By locking the manual operation unit with the locking unit, the open / closed states of the third and fourth louvers are also locked by the third and fourth louver operation units. Therefore, even if an attempt is made to forcibly open the third and fourth louvers, the third and fourth louvers cannot be opened properly, and ultimately, it may become impossible to forcibly open not only the third and fourth louvers, but also the fifth and sixth louvers. Furthermore, if force is applied to forcibly open the locked third and fourth louvers, excessive force may be applied to the third and fourth louvers, the third louver operation unit, and the fourth louver operation unit, which may result in damage to the third and fourth louvers, or the third louver operation unit and the fourth louver operation unit.

[0027] Therefore, in this configuration, the forced opening operation unit operates the fifth louver operation unit regardless of the open / closed states of the third and fourth louvers, and not only does operation of the fifth louver operation unit forcibly open the plurality of fifth louvers to an open state regardless of the open / closed states of the third and fourth louvers, but operation of the sixth louver operation unit forcibly opens the plurality of sixth louvers to an open state. As a result, the open / closed states of the third and fourth louvers remain locked (maintained), but opening the plurality of fifth and sixth louvers allows heat on the indoor side to be sufficiently dissipated to the outdoor side, while also appropriately preventing damage to the third and fourth louvers and the third and fourth louver operation units. [Brief explanation of the drawings]

[0028] [Figure 1] Front view of the grille device from the indoor side [Figure 2] Plan view of the surface grating device [Figure 3] Side view of the surface grating device [Figure 4] Schematic diagram showing the transmission of operating force when opening and closing the louvers [Figure 5] Side view showing the fifth louver operating section [Figure 6] FIG. 10 is a perspective view showing a manual operation unit and a third louver operation unit; [Figure 7] (A) A diagram showing a locked state of a locking unit in a manual operation unit, and (B) A diagram showing an unlocked state of the locking unit in a manual operation unit. [Figure 8] A perspective view showing a louver connection portion [Figure 9] (A) A side view showing the forced opening operation unit, (B) A perspective view showing the forced opening operation unit. [Figure 10] Diagram showing the operation of the forced release operation unit [Figure 11] (A) Upper ventilation section, (B) Lower ventilation section [Figure 12] FIG. 10 is a schematic diagram showing a transmission state of an operating force when opening and closing louvers in a surface grille device according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0029] An embodiment of a surface grating device according to the present invention will be described with reference to the drawings. [First embodiment] As shown in Figures 2 and 3, this surface grille device 1 is attached to a window 2 or the like that faces a common corridor in, for example, an apartment building or other collective housing. Figure 2 shows a plan view of the surface grille device 1, with the lower side facing the indoor side and the upper side facing the outdoor side. Figure 3 shows a side view of the surface grille device 1, with the right side facing the indoor side and the left side facing the outdoor side.

[0030] As shown in Figures 1 to 3, the surface grille device 1 has a surface grille main body 4 equipped with multiple louvers 3 that can be opened and closed freely, and the surface grille main body 4 is attached to an attachment target such as a window 2 by a surface grille attachment part 5.

[0031] 1, the surface grille main body 4 is formed in a rectangular shape having an upper frame portion 41, a lower frame portion 42, a right frame portion 43, and a left frame portion 44, and has a rectangular opening surrounded by the upper frame portion 41, the lower frame portion 42, the right frame portion 43, and the left frame portion 44. A middle crosspiece portion 45 extending in the vertical direction and connected to the upper frame portion 41 and the lower frame portion 42 is provided in the center of the opening in the surface grille main body 4 in the left-right direction (the left-right direction in FIG. 1), and the opening of the surface grille main body 4 is divided into a right side and a left side in the left-right direction by the middle crosspiece portion 45.

[0032] As shown in Figures 2 and 3, a screen door 6 is provided on the window 2 side (indoor side) of the surface grille main body 4, closing the opening of the surface grille main body 4. The surface grille main body 4 is divided into a right side and a left side in the left-right direction by the middle sash 45, and so the screen door 6 is also divided into a right side and a left side in the left-right direction, as shown in Figure 2. In this way, by providing the surface grille main body 4 with the screen door 6 and attaching this surface grille main body 4 to the window 2, there is no need to attach a separate screen door to the outdoor side of the window 2.

[0033] As shown in Figures 2 and 3, the surface grille mounting part 5 is configured so that the surface grille main body 4 can be attached freely to the window 2 or window frame with a gap between them. The surface grille mounting part 5 is formed in the shape of a plate extending from the indoor side to the outdoor side, with its indoor end attached to the window frame of the window 2 or the like, and the surface grille main body 4 attached to its outdoor end. The surface grille mounting part 5 is arranged so as to close the space 7 between the window 2 or window frame and the surface grille main body 4 in the vertical and horizontal directions.

[0034] As shown in Fig. 3, the grille mounting portion 5 comprises an upper mounting portion 51 that closes the upper side of the space 7 between the window 2 or window frame and the grille main body 4, a lower mounting portion 52 that closes the lower side of the space 7 between the window 2 or window frame and the grille main body 4, and as shown in Fig. 2, a right mounting portion 53 that closes the right side of the space 7 between the window 2 or window frame and the grille main body 4, and a left mounting portion 54 that closes the left side of the space 7 between the window 2 or window frame and the grille main body 4. The upper mounting portion 51 and the lower mounting portion 52 are formed in the shape of plates whose length covers the entire length of the grille main body 4 in the left-right direction, and the right mounting portion 53 and left mounting portion 54 are formed in the shape of plates whose length covers the entire length of the grille main body 4 in the up-down direction.

[0035] As shown in Fig. 11(A), the upper mounting portion 51 is provided with an upper ventilation portion 55 (corresponding to a ventilation portion) that allows air to pass between the space 7 blocked by the surface grille mounting portion 5 and the space outside it. Fig. 11(A) is an enlarged view of the upper mounting portion 51 and other parts in Fig. 3. As shown in Fig. 2, the upper ventilation portion 55 is formed across the entire length of the surface grille main body 4 in the left-right direction, and is divided into a right side and a left side in the left-right direction with the middle crosspiece 45 as the reference. The upper ventilation portion 55 is provided with an upper filter portion 56 that prevents insects and the like from entering the space 7 blocked by the surface grille mounting portion 5.

[0036] As shown in Fig. 11(B), like the upper mounting portion 51, the lower mounting portion 52 is also provided with a lower ventilation portion 57 (corresponding to a ventilation portion) that allows air to circulate between the space 7 blocked by the surface grille mounting portion 5 and the space outside it. Fig. 11(B) is an enlarged view of the lower mounting portion 52, etc. in Fig. 3. Like the upper ventilation portion 55, the lower ventilation portion 57 is formed across the entire length of the surface grille main body 4 in the left-right direction, and is divided into a right side and a left side in the left-right direction with the middle crosspiece 45 as the reference. The lower ventilation portion 57 is provided with a lower filter portion 58 that prevents insects and the like from entering the space 7 blocked by the surface grille mounting portion 5.

[0037] Incidentally, the upper ventilation section 55 and the lower ventilation section 57 are not limited to being divided into right and left sections in the left-right direction based on the middle sash section 45, but can also be formed, for example, by a series of holes that continue over the entire length of the louvered grille body 4 in the left-right direction, or by a plurality of holes that are lined up at intervals in the left-right direction of the louvered grille body 4, and the configuration of the upper ventilation section 55 and the lower ventilation section 57 can be changed as appropriate.

[0038] 1, the louvers 3 are provided in the opening of the surface grille main body 4, with their longitudinal direction aligned in the left-right direction of the surface grille main body 4, and multiple louvers 3 are arranged adjacent to each other in the up-down direction of the surface grille main body 4. The opening of the surface grille main body 4 is divided into a right side and a left side in the left-right direction by the middle crosspiece 45, and so the multiple louvers 3 are also divided and arranged in the left-right direction of the surface grille main body 4 on the right side and the left side, using the middle crosspiece 45 as the reference.

[0039] The multiple louvers 3 arranged on the right side of the surface grille main body 4 in the left-right direction have rotating shafts 37 (see Figures 6 and 8) provided at both ends spanning the right frame portion 43 and the central crosspiece 45, and are rotatably supported by the right frame portion 43 and the central crosspiece 45. As a result, when the rotating shafts 37 (see Figures 6 and 8) rotate around an axis along the left-right direction of the surface grille main body 4, the louvers 3 also rotate around an axis along the left-right direction of the surface grille main body 4, allowing them to open and close. Similarly, the multiple louvers 3 arranged on the left side of the surface grille main body 4 in the left-right direction have rotating shafts 37 provided at both ends spanning the left frame portion 44 and the central crosspiece 45, and are rotatably supported by the left frame portion 44 and the central crosspiece 45, and when the rotating shafts 37 rotate, the louvers 3 also rotate, allowing them to open and close.

[0040] As shown in FIG. 1, the surface grille body 4 is provided with an operating unit 8 that can be manually operated by a user or the like, and a louver operating unit 9 that operates the plurality of louvers 3 so as to open and close the plurality of louvers 3 in response to manual operation by the operating unit 8. (equivalent to the louver operating mechanism) When a user or the like manually operates the manual operation unit 8, the louver operation unit 9 opens or closes the plurality of louvers 3 in accordance with the manual operation, so that the plurality of louvers 3 can be freely operated to the open / closed state intended by the user or the like.

[0041] The manual operation units 8 are arranged one on each of the upper and lower sides in the vertical direction of the surface grille body 4, and correspondingly, one louver operation unit 9 is also provided on each of the upper and lower sides. The multiple louvers 3 arranged adjacently in the vertical direction are divided into upper louvers 3a and lower louvers 3b. In this embodiment, for example, the four louvers 3 arranged on the upper side are referred to as upper louvers 3a, and the 27 louvers 3 arranged on the lower side are referred to as lower louvers 3b, but the way in which the upper louvers 3a and the lower louvers 3b are divided can be changed as appropriate.

[0042] When the upper manual operation unit 8 is manually operated, the upper louver operation unit 9 opens or closes the upper louvers 3a in response to the manual operation. When the lower manual operation unit 8 is manually operated, the lower louver operation unit 9 opens or closes the lower louvers 3b in response to the manual operation. The upper louvers 3a and the lower louvers 3b are provided so that they can be opened or closed independently.

[0043] In contrast, in the left-right direction of the surface grille main body 4, the manual operation unit 8 is arranged on only one side of the surface grille main body 4 in the left-right direction. In this embodiment, the manual operation unit 8 is arranged on the right frame portion 43. The multiple louvers 3 are divided into right and left sides in the left-right direction of the surface grille main body 4, and the louver operation unit 9 opens and closes the divided right-side louvers 3 and left-side louvers 3 in conjunction with each other in response to manual operation of a single manual operation unit 8. It is only necessary to provide the manual operation unit 8 on only one side of the surface grille main body 4 in the left-right direction, which simplifies the configuration.

[0044] 1, the multiple louvers 3 are divided into right and left sides, and each of the right and left louvers 3 and 3 is divided into upper louvers 3a and lower louvers 3b. As a result, for the upper louvers 3a, by manually operating the upper manual operation unit 8, both the right and left sections are opened and closed in conjunction with each other, and for the lower louvers 3b, by manually operating the lower manual operation unit 8, both the right and left sections are opened and closed in conjunction with each other.

[0045] Below, we will explain the configuration for opening and closing the louver 3, but since the upper manual operation unit 8 and the upper louver operation unit 9 and the lower manual operation unit 8 and the lower louver operation unit 9 have the same configuration, we will only explain the upper manual operation unit 8 and the louver operation unit 9, and will omit explanations of the lower manual operation unit 8 and the louver operation unit 9.

[0046] As shown in Fig. 4, the multiple louvers 3 on the same side as the manual operation unit 8 (the right side in Fig. 1) are divided into a third louver 33 and a sixth louver 36, and the louvers on the opposite side as the manual operation unit 8 (the left side in Fig. 1) are divided into a fourth louver 34 and a fifth louver 35. The third louver 33 and the fourth louver 34 are disposed at the same position in the vertical direction, and their positions in the vertical direction correspond to each other.

[0047] For example, of the multiple louvers 3 divided on the same side as the manual operation unit 8 (the right side in FIG. 1), one louver 3 is designated as the third louver 33, and the louvers 3 other than the one third louver 33 are designated as the sixth louver 36. Of the multiple louvers 3 divided on the opposite side from the manual operation unit 8 (the left side in FIG. 1), one louver 3 is designated as the fourth louver 34, and the louvers 3 other than the one fourth louver 34 are designated as the fifth louver 35. Incidentally, since FIG. 4 shows both the upper manual operation unit 8 and louver operation unit 9 and the lower manual operation unit 8 and louver operation unit 9, there are one third louver 33 and one fourth louver 34 on the upper side and one on the lower side, for a total of two each.

[0048] FIG. 4 is a schematic diagram showing the transmission state of the operating force when opening and closing the louver 3. As shown in FIG. 4, the louver operating unit 9 includes a third louver operating unit 93 that operates to open and close the third louver 33. (Equivalent to the third louver operating mechanism) and a fourth louver operating unit 94 for operating the fourth louver 34 to open and close it. (Equivalent to the 4th louver operating mechanism) and a fifth louver operating unit 95 for operating the fifth louver 35 to open and close it. (Equivalent to the 5th louver operating mechanism) and a sixth louver operating unit 96 for operating the sixth louver 36 to open and close it. (Equivalent to the 6th louver operating mechanism) It is equipped with the following:

[0049] The third louver operation unit 93 opens and closes the third louver 33 in response to manual operation by the manual operation unit 8, as indicated by the arrow extending from the right side to the left at the right end in FIG. 4 . The fourth louver operation unit 94 opens and closes the fourth louver 34 in response to manual operation of the third louver 33, as indicated by the arrow extending from the right side to the left at the center in the left-right direction in FIG. 4 . The fifth louver operation unit 95 opens and closes the fifth louver 35 in response to manual operation of the fourth louver 34, as indicated by the arrow extending from the right side to the left at the left end and the arrow extending from the left side to the right, in FIG. 4 . The sixth louver operation unit 96 opens and closes the sixth louver 36 in response to manual operation of the fifth louver 35, as indicated by the arrow extending from the left side to the right at the center in the left-right direction, the arrow extending from the left side to the right at the right end, and the arrow extending from the right side to the left, in FIG. 4 . In this way, the multiple louvers 3 divided into left and right halves are opened and closed in a linked manner by opening and closing the third louver 33, the fourth louver 34, the fifth louver 35, and the sixth louver 36 in this order in response to manual operation of the manual operation unit 8.

[0050] (Human operation section) As shown in Fig. 6, the manual operation unit 8 is equipped with an operation dial 81 that can be rotated by a user or the like, and a lock unit 82 that locks the rotation of the operation dial 81, as shown in Fig. 7. Incidentally, Fig. 6 is a perspective view of the manual operation unit 8 as seen from the outdoors, with some components omitted. Fig. 7 shows the inside of the manual operation unit 8, with some components omitted in order to show the lock unit 82 and the like.

[0051] As shown in Figure 7, the locking section 82 is provided with a locking operation section 84 that can move up and down relative to a case 83 that rotatably supports the operation dial 81, an engaging section 85 that can engage with a recess in the operation dial 81, the outer periphery of which is formed in an uneven shape, and a biasing section (elastic spring) 86 that biases the engaging section 85 toward the side that engages with the recess in the operation dial 81.

[0052] When a user or the like moves the lock operation unit 84 upward relative to the case 83, as shown in Fig. 7(A), the lock unit 82 moves the engagement unit 85 upward due to the biasing force of the biasing unit 86, causing the engagement unit 85 to engage with the recessed portion of the operation dial 81 and locking the rotational operation of the operation dial 81. Conversely, when a user or the like moves the lock operation unit 84 downward relative to the case 83, as shown in Fig. 7(B), the lock unit 82 is moved downward with the pressing unit 87 of the lock operation unit 84 pressing the engagement unit 85, causing the engagement unit 85 to move downward against the biasing force of the biasing unit 86 and disengage the engagement unit 85 from the recessed portion of the operation dial 81, thereby unlocking the rotational operation of the operation dial 81.

[0053] (Third louver operation section) The third louver operating unit 93 is provided on the right frame portion 42 disposed on the right side of the surface grille main body 4 in the left-right direction. As shown in FIG. 6 , the third louver operating unit 93 is provided with a rotary gear 93a that meshes with the handle gear 81a of the operating dial 81, and a rotary cam portion 93b that is rotatable in conjunction with the rotation of the rotary gear 93a. The rotary cam portion 93b is connected to a rotary shaft portion 37 that is rotatable integrally with the third louver 33. When a user or the like rotates the operating dial 81, the rotary gear 93a rotates in response to the rotation, and the rotary cam portion 93b rotates in conjunction with the rotation of the rotary gear 93a, causing the rotary shaft portion 37 to rotate integrally with the third louver 33, thereby opening or closing the third louver 33.

[0054] (4th louver operation section) As shown in FIGS. 4 and 8 , the fourth louver operating unit 94 is provided in the center of the surface grille main body 4 in the left-right direction. As shown in FIG. 8 , the fourth louver operating unit 94 is provided with a louver connecting portion 941 that connects the rotation shaft portion 37 of the third louver 33 and the rotation shaft portion 37 of the fourth louver 34. The louver connecting portion 941 is provided inside the center rail portion 45, and in FIG. 8 , the center rail portion 45 and the like are omitted in order to show the louver connecting portion 941. The fourth louver operating unit 94 connects the third louver 33 and the fourth louver 34 at the louver connecting portion 941, thereby linking the movement of the third louver 33 with the movement of the fourth louver 34. Therefore, when the third louver 33 is rotated, the rotation operating force of the third louver 33 is transmitted to the fourth louver 34 by the louver connecting portion 941, causing the fourth louver 34 to rotate in conjunction with the third louver 33. As shown in Figure 8, the louver connection portion 941 includes a third connection portion 941a connected to the rotating shaft portion 37 of the third louver 33, a fourth connection portion 941b connected to the rotating shaft portion 37 of the fourth louver 34, and a fixing device 941c (e.g., a fastener such as a bolt and nut) that fixedly connects the third connection portion 941a and the fourth connection portion 941b.

[0055] (5th louver operation section) 4 and 5, the fifth louver operating unit 95 is provided with a fifth interlocking bar 951 that can be freely rotated in conjunction with the plurality of fifth louvers 35, and the fifth interlocking bar 951 is moved in response to the rotation of the fourth louvers 34, thereby rotating the plurality of fifth louvers 35 in conjunction with each other. The fifth interlocking bar 951 is provided on the left frame portion 44 disposed on the left side of the surface grille main body 4 in the left-right direction, and FIG. 5 is a side view showing the interior of the left frame portion 44.

[0056] 5, the fifth interlocking bar 951 is formed in the shape of a rod that extends in the vertical direction, and is supported so as to be freely movable in the vertical direction inside the left frame portion 44. In addition to the fifth interlocking bar 951, the fifth louver operating portion 95 is equipped with a rotational force transmission portion 952 that is rotatable integrally with the rotation shaft portion 37 of the fourth louver 34, and a rotation cam portion 953 that is rotatable integrally with the fifth louver 35.

[0057] As shown in FIG. 9(B), one end of the rotational force transmission unit 952 is connected to the rotation shaft 37 of the fourth louver 34. FIG. 9(B) is an enlarged view of some of the components, such as the rotational force transmission unit 952, extracted from FIG. 5. A bifurcated recess 952a is formed at the other end of the rotational force transmission unit 952, and as shown in FIG. 5, an engagement unit 954 fixed to the fifth interlocking bar 951 is engaged with the recess 952a. The rotational force transmission unit 952 and the fifth interlocking bar 951 are rotatably connected by the engagement between the recess 952a and the engagement unit 954. In response to the rotation of the fourth louver 34, the rotational force transmission unit 952 transmits the rotational force to the fifth interlocking bar 951, thereby moving the fifth interlocking bar 951 up and down.

[0058] 5, a rotating cam portion 953 is provided for each of the plurality of fifth louvers 35, one end of which is connected to the rotation shaft portion 37 of the fifth louver 35, and the other end of which is rotatably supported by the fifth interlocking bar 951. When the fifth interlocking bar 951 moves up or down, the rotating cam portion 953 converts the up or down movement into a rotational force and transmits it to the rotation shaft portion 37 of the fifth louver 35, causing the fifth louver 35 to rotate.

[0059] 4, the fifth louver operating unit 95 transmits the rotational force to the fifth interlocking bar 951 via the rotational force transmitting unit 952 in response to the rotational operation of the fourth louver 34, thereby moving the fifth interlocking bar 951 up and down. When the fifth interlocking bar 951 moves up and down, the up and down movement is converted into rotational force by each of the multiple rotating cam units 953 and transmitted to each of the multiple fifth louvers 35, causing the multiple fifth louvers 35 to rotate in unison.

[0060] In this embodiment, the fifth louver 35 is rotated to the open side by moving the fifth interlocking bar 951 upward, and conversely, the fifth louver 35 is rotated to the closed side by moving the fifth interlocking bar 951 downward. Fig. 5(A) shows the state in which the fifth louver 35 has been rotated to the fully open state, and Fig. 5(B) shows the state in which the fifth louver 35 has been rotated to the fully closed state.

[0061] (6th louver operation section) As shown in FIG. 4 , the sixth louver operating unit 96 includes a louver connecting portion 961 that connects the fifth louvers 35a for transmitting rotational force and the sixth louvers 36a for transmitting rotational force, and a sixth interlocking bar 962 that can rotate the multiple sixth louvers 36 in conjunction with each other. The sixth interlocking bar 962 is provided on the right frame portion 43 disposed on the right side of the surface grille main body 4 in the left-right direction. Of the multiple fifth louvers 35, one fifth louver 35 connected by the louver connecting portion 961 is the fifth louver 35a for transmitting rotational force, and of the multiple sixth louvers 36, one sixth louver 36 connected by the louver connecting portion 961 is the sixth louver 36a for transmitting rotational force. The fifth louvers 35a for transmitting rotational force and the sixth louvers 36a for transmitting rotational force are disposed at the same position in the vertical direction, and their positions in the vertical direction correspond to each other.

[0062] 8, the louver connection portion 961 of the sixth louver operation portion 96 has a configuration similar to the louver connection portion 941 of the fourth louver operation portion 94, and links the fifth louver 35 and the sixth louver 36 together at the louver connection portion 961, thereby linking the movement of the fifth louver 35a for transmitting rotational force with the movement of the sixth louver 36a for transmitting rotational force. Therefore, when the fifth louver 35a for transmitting rotational force is rotated, the rotational operation force of the fifth louver 35a for transmitting rotational force is transmitted to the sixth louver 36a for transmitting rotational force by the louver connection portion 961, causing the sixth louver 36a for transmitting rotational force to be rotated in conjunction with the fifth louver 35a. The louver connection portion 961 includes a fifth connection portion 961a connected to the rotational shaft portion 37 of the fifth louver 35a for transmitting rotational force, a sixth connection portion 961b connected to the rotational shaft portion 37 of the sixth louver 36a for transmitting rotational force, and a fixing device 961c (e.g., a fastener such as a bolt or nut) that fixedly connects the fifth connection portion 961a and the sixth connection portion 961b.

[0063] The sixth interlocking bar 962 has a similar configuration to the fifth interlocking bar 951 (see Figures 4 and 5), and is therefore not shown in the figures. However, it is formed in the shape of a rod extending in the vertical direction and is supported within the right frame portion 43 so as to be freely movable in the vertical direction. The sixth interlocking bar 962 is connected to a rotational force transmission portion that rotates integrally with the sixth louver 36a for transmitting rotational force, and a rotational cam portion that rotates integrally with the plurality of sixth louvers 36 other than the sixth louver 36a for transmitting rotational force. The rotational cam portion is provided only for the plurality of sixth louvers 36, and no rotational cam portion is provided for the third louver 33. As a result, when the sixth interlocking bar 962 moves up and down, the plurality of sixth louvers 36 other than the sixth louver 36a for transmitting rotational force are rotated, but the third louver 33 is not rotated.

[0064] 4, in response to the rotational operation of the fifth louver 35a for transmitting rotational force, the sixth louver operation unit 96 transmits the rotational force to the sixth louver 36a for transmitting rotational force via the louver connection unit 961, thereby rotating the sixth louver 36a for transmitting rotational force. The rotational force of the sixth louver 36a for transmitting rotational force is transmitted to the sixth interlocking bar 962 via the rotational force transmission unit, which moves the sixth interlocking bar 962 in the vertical direction, and the movement of the sixth interlocking bar 962 rotates the plurality of sixth louvers 36 other than the sixth louver 36a for transmitting rotational force.

[0065] As described above, the louver operating unit 9, as shown in Figure 4, opens and closes in conjunction with the third to sixth louver operating units 93 to 96 in the order of the third louver 33 → fourth louver 34 → multiple fifth louvers 35 → sixth louver 36a for transmitting rotational force → multiple sixth louvers 36 other than the sixth louver 36a for transmitting rotational force, in response to manual operation of the manual operating unit 8.

[0066] In this embodiment, in the event of a fire indoors, for example, in order to dissipate heat from the indoor side to the outdoor side, the surface grille device 1 is provided with a forced opening section 10 that forcibly opens multiple louvers 3 to an open state, as shown in Figures 5, 9, and 10. The forced opening section 10 is provided in a left frame section 44 disposed on the left side in the left-right direction of the surface grille main body 4. Figure 9 is an enlarged view of the forced opening section 10 and other components extracted from Figure 5, and Figure 10 is an enlarged view of the forced opening section 10 and other components extracted from Figure 5, showing the operation of the forced opening section 10 and other components.

[0067] As shown in FIGS. 5 and 10, the forced opening unit 10 includes a forced opening operation unit 101 that operates the louver operation unit 9 to forcibly open the plurality of louvers 3 to an open state when the surface grille body 4 reaches a high temperature. (equivalent to the forced release operating mechanism) The forced opening operation unit 101 is configured to operate the fifth louver operation unit 95 when the surface grille body 4 reaches a high temperature so as to forcibly open the plurality of fifth louvers 35 and the plurality of sixth louvers 36 to an open state, regardless of the open / closed state of the third louvers 33 and the fourth louvers 34.

[0068] As shown in Figure 4, the manual operation unit 8, the lock unit 82, and the sixth interlocking bar 962 of the sixth louver operation unit 96 are disposed on one end side in the left-right direction of the surface grille main body 4 (the right side in Figure 4), and the fifth interlocking bar 951 and the forced opening operation unit 101 of the fifth louver operation unit 95 are disposed on the other end side in the left-right direction of the surface grille main body 4 (the left side in Figure 4). This allows the various components to be distributed and disposed on both the right and left sides of the surface grille main body 4, and an efficient layout configuration is adopted that ensures installation space, etc.

[0069] (Operation unit for forced opening) As shown in Figure 9, the forced opening operating unit 101 is equipped with a temperature fuse unit 102 that melts when a predetermined high temperature state is reached, a first forced opening rotating cam unit 104 that is rotatable around a rotating shaft unit 103 that runs along the left-right direction of the surface grille main body 4, a second forced opening rotating cam unit 105 that is rotatable around the rotating shaft unit 103 that runs along the left-right direction of the surface grille main body 4, a support unit 106 that supports the first forced opening rotating cam unit 104 and the second forced opening rotating cam unit 105 so that they are rotatable around the rotating shaft unit 103 that runs along the left-right direction of the surface grille main body 4, and a biasing unit (elastic spring) 107 that biases the first forced opening rotating cam unit 104 in one direction of the rotation (clockwise as indicated by arrow X1 in Figure 9 (B)).

[0070] The first forced opening rotating cam portion 104 is biased by the biasing portion 107 in one direction of rotation (clockwise as indicated by the arrow X1 in Figure 9(B)), but the upper end portion of the first forced opening rotating cam portion 104 is engaged with the temperature fuse portion 102, and this engagement restricts the rotational movement of the first forced opening rotating cam portion 104 in one direction of rotation (clockwise as indicated by the arrow X1 in Figure 9(B)).

[0071] A bent, plate-like pressed portion 105a is provided at one end of the second forced opening rotating cam portion 105. When the rotational movement of the first forced opening rotating cam portion 104 is restricted, the pressed portion 105a is disposed in a position facing the pressing portion 104a of the first forced opening rotating cam portion 104 with a gap therebetween. When the first forced opening rotating cam portion 104 rotates, the pressing portion 104a of the first forced opening rotating cam portion 104 and the pressed portion 105a of the second forced opening rotating cam portion 105 come into contact with each other, causing the pressing portion 104a to press the pressed portion 105a. This pressing operation causes the second forced opening rotating cam portion 105 to rotate freely integrally with the first forced opening rotating cam portion 104.

[0072] The other end of the second forced opening rotation cam portion 105 is formed with a bifurcated recess 105b, and as shown in Figure 10, an engagement portion 954 fixed to the fifth interlocking bar 951 engages with the recess 105b. The second forced opening rotation cam portion 105 and the fifth interlocking bar 951 are rotatably connected by the engagement between the recess 105b and the engagement portion 954, and the second forced opening rotation cam portion 105 and the fifth interlocking bar 951 are provided so as to be movable integrally. The second forced opening rotation cam portion 105 rotates integrally with the first forced opening rotation cam portion 104, and by transmitting its rotational force to the fifth interlocking bar 951, the fifth interlocking bar 951 can be moved freely up and down.

[0073] This section explains what happens when a fire breaks out indoors. When a fire breaks out in a room, the surface grille body 4 becomes hot, and when it reaches a predetermined high temperature, the thermal fuse portion 102 melts. When the thermal fuse portion 102 melts, the state changes from that shown in Fig. 10(A) to that shown in Fig. 10(B), the engagement between the thermal fuse portion 102 and the first forced opening rotation cam portion 104 is released, and the first forced opening rotation cam portion 104 is rotated by the biasing portion 107 to one side of the rotational direction (clockwise as indicated by arrow X1 in Fig. 10(B)).

[0074] This rotational movement of the first forced opening rotation cam portion 104 causes the pressing portion 104a of the first forced opening rotation cam portion 104 to come into contact with the pressed portion 105a of the second forced opening rotation cam portion 105, and the pressing portion 104a presses the pressed portion 105a to one side in the rotation direction (clockwise as indicated by the arrow X1 in FIG. 10(B)). Therefore, the first forced opening rotation cam portion 104 and the second forced opening rotation cam portion 105 rotate integrally to one side in the rotation direction (clockwise as indicated by the arrow X1 in FIG. 10(B)).

[0075] The rotational movement of the second forced-open rotating cam portion 105 causes the fifth interlocking bar 951 to move up and down, as shown in Fig. 10(C). The direction in which the fifth interlocking bar 951 is moved is the side (upward) that opens the fifth louver 35 to the fully open state within the up and down direction. Therefore, by moving the fifth interlocking bar 951 to the side (upward) that opens the fifth louver 35 to the fully open state, the fifth louver 35 is forcibly opened to the fully open state, as shown in Fig. 5(C).

[0076] 5(C), the forced opening operation unit 101 forcibly opens all of the plurality of fifth louvers 35 to the fully open state by moving the fifth interlocking bar 951 of the fifth louver operation unit 95 to the side (upward) that opens the fifth louvers 35 to the fully open state. By opening all of the plurality of fifth louvers 35 to the fully open state, as in the case where manual operation is performed by the manual operation unit 8, as shown in FIG. 4, the sixth louver operation unit 96 rotates the sixth louver 36a for transmitting rotational force to the fully open state in response to the rotational force transmitting fifth louver 35a to the fully open state, and by rotating the sixth louver 36a for transmitting rotational force to the fully open state, the sixth interlocking bar 962 is moved to the side (upward) that opens to the fully open state, thereby rotating the plurality of sixth louvers 36 other than the sixth louver 36a for transmitting rotational force to the fully open state.

[0077] Here, when the forced opening operation unit 101 operates to move the fifth interlocking bar 951 of the fifth louver operation unit 95, the operating force for moving the fifth interlocking bar 951 is transmitted to the rotational force transmission unit 952, as shown in Figures 10(A) and 10(B). As shown in Figure 5, the rotational force transmission unit 952 is provided rotatably integrally with the rotation shaft 37 of the fourth louver 34. Therefore, when the operating force for moving the fifth interlocking bar 951 is transmitted to the rotational force transmission unit 952, it rotates the fourth louver 34. At this time, if the manual operation of the manual operation unit 8 is locked by the lock unit 82 (see Figure 7(A)), the open / closed states of the third louver 33 and the fourth louver 34 are locked (maintained). Therefore, when manual operation of the manual operation unit 8 is locked by the lock unit 82, if the forced opening operation unit 101 moves the fifth interlocking bar 951 of the fifth louver operation unit 95, the fourth louver 34, whose open / closed state is locked (maintained), will be forcibly rotated.

[0078] 9, the forced opening operation unit 101 is provided with a linkage release unit 108 that releases the link between the rotational force transmission unit 952 and the fifth interlocking bar 951 and thereby releases the link between the movement of the fourth louver 34 and the movement of the fifth interlocking bar 951. As shown in FIGS. 5(C) and 10(C), this linkage release unit 108 releases the link between the rotational force transmission unit 952 and the fifth interlocking bar 951 and releases the link between the movement of the fourth louver 34 and the movement of the fifth interlocking bar 951, thereby preventing the movement operation force of the fifth interlocking bar 951 from being transmitted to the rotational force transmission unit 952 and preventing the fourth louver 34 from being forcibly rotated.

[0079] As shown in Figure 9, the connection release unit 108 is equipped with a release biasing unit 109 that biases the rotational force transmission unit 952 in the direction of disconnecting it from the rotating shaft unit 37 of the fourth louver 34, and a connection state switching unit 110 that can be switched between a connection maintenance state in which the connection of the rotational force transmission unit 952 to the rotating shaft unit 37 is maintained against the biasing force of the release biasing unit 109, and a connection release state in which the connection is allowed to be released by the biasing force of the release biasing unit 109.

[0080] The rotational force transmission part 952 is connected in a state where it fits into the spacer part 111 which is fixedly connected to the rotation shaft part 37 of the fourth louver 34. A rectangular fitting hole part 952b is formed in the rotational force transmission part 952, and the fitting hole part 952b is fitted onto the spacer part 111 which has a rectangular outer shape, so that the rotational force transmission part 952 is connected in a state where it fits into the spacer part 111.

[0081] The release biasing portion 109 is configured of an elastic member such as a compression spring, and is disposed around the spacer portion 111. The release biasing portion 109 is provided in a state in which it applies a biasing force to move the rotational force transmission portion 952 in the direction of releasing the engagement with the spacer portion 111 (the direction shown by the arrow X2 in FIG. 9(A)).

[0082] The connection state switching portion 110 is configured by a part of the first forced opening rotating cam portion 104. A part of the first forced opening rotating cam portion 104, which is the connection state switching portion 110, is present on the side that releases the engagement with the spacer portion 111 (the direction shown by the arrow X2 in FIG. 9A), and thereby comes into contact with the rotational force transmission portion 952 to restrict movement of the rotational force transmission portion 952 toward the side that releases the engagement with the spacer portion 111 (the direction shown by the arrow X2 in FIG. 9A), thereby switching to a connection maintaining state. Conversely, since a part of the first forced release rotating cam portion 104, which is the connection state switching portion 110, is not on the side that releases the engagement with the spacer portion 111 (in the direction indicated by the arrow X2 in Figure 9(A)), the force of the release biasing portion 109 moves the rotational force transmission portion 952 to the side that releases the engagement of the rotational force transmission portion 952 with the spacer portion 111 (in the direction indicated by the arrow X2 in Figure 9(A)), switching to the disconnected state.

[0083] 10(A), in the forced opening operation unit 101, engagement between the first forced opening rotation cam portion 104 and the thermal fuse portion 102 restricts rotational movement of the first forced opening rotation cam portion 104 in one direction of the rotational direction (clockwise as indicated by the arrow X1 in FIG. 10(B)). As a result, a portion of the first forced opening rotation cam portion 104, which is the connection state switching portion 110, is positioned so as to overlap with the rotational force transmission portion 952 in the direction perpendicular to the plane of the drawing. Therefore, the portion of the first forced opening rotation cam portion 104, which is the connection state switching portion 110, abuts against the rotational force transmission portion 952 and restricts movement of the rotational force transmission portion 952 toward the side that releases the engagement of the rotational force transmission portion 952 with the spacer portion 111 (forward in the direction perpendicular to the plane of the drawing), thereby maintaining the engagement between the rotational force transmission portion 952 and the spacer portion 111 and maintaining the connection maintained.

[0084] In contrast, when the temperature becomes high and the thermal fuse unit 102 melts, as shown in FIG. 10(B), the first forced opening rotating cam unit 104 is rotated and moved to one side in the rotational direction (clockwise as indicated by arrow X1 in FIG. 10(B)) by the biasing force of the biasing unit 107. As a result, a part of the first forced opening rotating cam unit 104, which is the connection state switching unit 110, is rotated and moved to a position (to the lower right in FIG. 10(B)) that is not overlapped with the rotational force transmitting unit 952 in the direction perpendicular to the paper surface. Therefore, the part of the first forced opening rotating cam unit 104, which is the connection state switching unit 110, does not come into contact with the rotational force transmitting unit 952, and the biasing force of the release biasing unit 109 moves the rotational force transmitting unit 952 forward in the direction perpendicular to the paper surface. Therefore, as shown in FIG. 10(C), the rotational force transmission part 952 enters a disconnected state in which the engagement with the spacer part 111 is released, and the rotational force transmission part 952 separates from the spacer part 111 and falls downward.

[0085] 5(C), the link release unit 108 releases the connection between the rotational force transmission unit 952 and the fifth interlocking bar 951, thereby releasing the link between the movement of the fourth louver 34 and the movement of the fifth interlocking bar 951. This prevents the movement operating force of the fifth interlocking bar 951 from being transmitted to the rotational force transmission unit 952, and prevents the application of a force that forcibly rotates the fourth louver 34, whose open / closed state is locked (maintained), even when the manual operation of the manual operation unit 8 is locked by the lock unit 82.

[0086] As described above, in the event of a fire occurring indoors, the forced opening operating unit 101 forcibly opens the plurality of fifth louvers 35 and the plurality of sixth louvers 36 to the fully open state, regardless of the open / closed state of the third louvers 33 and the fourth louvers 34. By discharging indoor air to the outdoors through the plurality of fifth louvers 35 and the plurality of sixth louvers 36 in the fully open state, heat from the indoor side can be effectively dissipated to the outdoors side.

[0087] At this time, the third louver 33 and the fourth louver 34 will be maintained in an open or closed state, but since there is only one third louver 33 and one fourth louver 34, by opening the fifth louver 35 and the sixth louver 36, which account for the majority of the multiple louvers 3, to a fully open state, heat from the indoor side can be efficiently dissipated to the outdoor side.

[0088] In this embodiment, not only are the numerous louvers 3 opened to the full open position, but as shown in FIG. 11, an upper ventilation section 55 and a lower ventilation section 57 are provided, so that indoor air can be discharged to the outdoors through the upper ventilation section 55 and the lower ventilation section 57, and by discharging this air, heat from the indoor side can also be dissipated to the outdoors side.

[0089] Furthermore, since the upper ventilation section 55 is provided on the upper mounting section 51 that closes the space 7 between the window 2 and the surface grille body 4, the air that is heated and rises in the event of a fire can be efficiently discharged to the outdoors through the upper ventilation section 55.

[0090] Furthermore, since not only upper ventilation section 55 but also lower ventilation section 57 is provided as a ventilation section, not only can indoor air be discharged to the outdoors from lower ventilation section 57, but in some cases, it is conceivable that an updraft will be generated due to heating, causing outdoor air to flow in through lower ventilation section 57. When such a phenomenon occurs, the air in space 7 will be cooled by the inflow of outdoor air, and the effect of suppressing the temperature rise in space 7 can also be expected.

[0091] Second Embodiment This second embodiment is a different embodiment in terms of the arrangement of the multiple louvers 3. The arrangement of the multiple louvers 3 will be mainly described with reference to Fig. 12, and the other configurations are the same as those of the first embodiment, so descriptions thereof will be omitted.

[0092] 1, the surface grille main body 4 is provided with a center crosspiece 45, and the louvers 3 are arranged divided into right and left sides in the left-right direction of the surface grille main body 4, based on the center crosspiece 45. In contrast, in the second embodiment, as shown in FIG. 12, the surface grille main body 4 is not provided with a center crosspiece 45, and multiple louvers 3 extending continuously over the entire length of the surface grille main body 4 in the left-right direction are provided adjacent to each other in the vertical direction relative to the rectangular opening of the surface grille main body 4.

[0093] As shown in Figure 12, in this second embodiment, as in the first embodiment, one manual operation unit 8 is disposed on the upper side and one on the lower side in the vertical direction of the surface grille body 4, and correspondingly, one louver operation unit 9 is also provided on the upper side and one on the lower side. When the upper manual operation unit 8 is manually operated, the upper louver operation unit 9 opens or closes the upper louvers 3 in response to that manual operation. When the lower manual operation unit 8 is manually operated, the lower louver operation unit 9 opens or closes the lower louvers 3 in response to that manual operation. The upper louvers 3 and the lower louvers 3 are provided so that they can be opened and closed independently.

[0094] Below, we will explain the configuration for opening and closing the louver 3, but since the upper manual operation unit 8 and the upper louver operation unit 9 and the lower manual operation unit 8 and the lower louver operation unit 9 have the same configuration, we will only explain the upper manual operation unit 8 and the louver operation unit 9, and will omit explanations of the lower manual operation unit 8 and the louver operation unit 9.

[0095] 12, similar to FIG. 4 of the first embodiment, schematically shows the transmission state of the operating force when opening and closing the louvers 3 in the surface grille device 1. The louver operating unit 9 includes a first louver operating unit 91 that operates to open and close the first louvers 31. (Equivalent to the first louver operating mechanism) and a second louver operating unit 92 for operating the second louver 32 to open and close it. (Equivalent to the second louver operating mechanism) It is equipped with the following:

[0096] The first louver operation unit 91 opens and closes the first louver 31 in response to manual operation by the manual operation unit 8, as indicated by the arrow extending from right to left at the right end in Fig. 12. The second louver operation unit 92 opens and closes the second louver 32 in response to manual operation of the first louver 31, as indicated by the arrow extending from right to left at the left end in Fig. 12 and then the arrow extending from left to right. In this way, the first louver 31 and then the second louver 32 are opened and closed in a linked manner in response to manual operation by the manual operation unit 8, thereby opening and closing the multiple louvers 3 in a linked manner.

[0097] The first louver operation unit 91 has the same configuration as the third louver operation unit 93 in the first embodiment, and the second louver operation unit 92 has the same configuration as the fifth louver operation unit 95 in the first embodiment, so their description will be omitted. As shown in Fig. 12, the second louver operation unit 92 is provided with a second interlocking bar 921 that corresponds to the fifth interlocking bar 951 of the fifth louver operation unit 95. Furthermore, the forced opening unit 10 also has the same configuration as in the first embodiment, so its description will be omitted.

[0098] In the second embodiment, the manual operation unit 8, lock unit 82 and first louver operation unit 91 are arranged on one end side of the louver main body 4 in the left-right direction (right side in Figure 12), and the second louver operation unit 92 and forced opening operation unit 101 are arranged on the other end side of the louver main body 4 in the left-right direction (left side in Figure 12).

[0099] [Another embodiment] Other embodiments of the present invention will be described below. Note that the configurations of the embodiments described below are not limited to being applied independently, but can also be applied in combination with the configurations of other embodiments.

[0100] (1) In the above embodiment, the upper ventilation section 55 and the lower ventilation section 57 are provided, but it is also possible to provide only the upper ventilation section 55, or to provide neither the upper ventilation section 55 nor the lower ventilation section 57. Furthermore, when ventilation sections are provided, ventilation sections can be provided not only in the upper mounting section 51 and the lower mounting section 54, but also in the right mounting section 53 and the left mounting section 54, thereby making the space 7 between the window 2 and the surface grille body 4 ventilable in the left-right direction.

[0101] (2) In the above embodiment, the louvers 3 are divided into upper and lower louvers, but they may also be provided as a single louver without being divided vertically.

[0102] (3) In the above embodiment, the grille body 4 is attached to the attachment target portion of the window 2 or window frame so as to form a space 7 at a distance, and a screen 6 is provided in that space 7, resulting in a grille device with a screen.However, it is also possible to make a grille device without a screen, in which the grille body 4 is attached to the attachment target portion without reserving installation space for the screen 6 between the attachment target portion and the grille body 4. In this case, for example, when the surface grille body 4 becomes hot, after the multiple louvers 3 have been forcibly opened, the surface grille body 4 can be opened by slightly swinging its upper end toward the outdoors, using its lower end as a fulcrum, and the air inside the room can be discharged to the outdoors through the open space.

[0103] (4) In the above embodiment, the manual operation unit 8 is arranged on either the left or right side of the surface grille body 4, but the manual operation unit 8 can also be arranged on both the left and right sides of the surface grille body 4. [Explanation of symbols]

[0104] Single lattice device 2 Window (mounting area) 3 Louvers 4-surface grille body 5. Grille mounting section 7 Space 8 Human operation section 9 Louver operation section 10 Forced open section 31 First louver 32 Second louver 33 Third louver 34 Fourth Louver 35 5th Louver 36 No. 6 Louver 55 Upper ventilation section (ventilation section) 57 Lower ventilation section (ventilation section) 82 Rock Club 91 1st louver operation section 92 Second louver operation section 93 Third louver operation section 94 4th louver operation section 95 5th louver operation section 96 6th louver operation section 101 Forced opening operation part

Claims

1. a surface grille body that can be attached to an attachment target portion and has a plurality of louvers that can be opened and closed; The grille is provided with a forced opening section that forcibly opens the louvers to an open state when the grille body reaches a high temperature. a louver operating mechanism that operates the plurality of louvers so as to open and close the plurality of louvers in response to manual operation by a manual operating unit; The forced opening section is provided with a forced opening operation mechanism that operates the louver operation mechanism so as to forcibly open the plurality of louvers to an open state when the surface grille body reaches a high temperature state; a lock unit that locks the manual operation unit from manual operation, The louver operating mechanism is a first louver operating mechanism that opens or closes a first louver among the plurality of louvers in response to manual operation by the manual operating unit; a second louver operation mechanism that operates a plurality of second louvers other than the first louver to open or close in conjunction with the opening or closing of the first louver; The forced opening operating mechanism of this surface grille device operates the second louver operating mechanism so as to forcibly open multiple second louvers to an open state when the surface grille body becomes hot, regardless of the open / closed state of the first louvers.

2. the manual operation unit, the lock unit, and the first louver operation mechanism are disposed on one end side of the surface grille body in the left-right direction, 2. The surface grille device according to claim 1, wherein the second louver operating mechanism and the forced opening operating mechanism are disposed on the other end side of the surface grille body in the left-right direction.

3. A surface grille body that can be attached to an attachment target portion and has a plurality of louvers that can be opened and closed; The grille is provided with a forced opening section that forcibly opens the louvers to an open state when the grille body reaches a high temperature. a louver operating mechanism that operates the plurality of louvers so as to open and close the plurality of louvers in response to manual operation by a manual operating unit; The forced opening section is provided with a forced opening operation mechanism that operates the louver operation mechanism so as to forcibly open the plurality of louvers to an open state when the surface grille body reaches a high temperature state; the manual operation unit is disposed on either one of the left and right sides of the surface grating body, a lock unit that locks the manual operation unit from manual operation, The plurality of louvers are arranged in a divided state on the same side as the manual operation unit and on the opposite side in the left-right direction of the surface grille body, The louver operating mechanism is a third louver operating mechanism that opens and closes a third louver among the plurality of louvers divided on the same side as the manual operation unit in response to manual operation by the manual operation unit; a fourth louver operating mechanism that operates to open or close a fourth louver corresponding to the third louver among the plurality of louvers divided on the side opposite to the manual operation unit in response to an opening or closing operation of the third louver; a fifth louver operating mechanism that operates to open or close a plurality of fifth louvers other than the fourth louver among the plurality of louvers divided on the side opposite to the manual operation unit in response to an opening or closing operation of the fourth louver; a sixth louver operating mechanism that operates to open or close a plurality of sixth louvers other than the third louver among the plurality of louvers divided on the same side as the manual operation unit in response to the opening or closing operation of the fifth louver; The forced opening operating mechanism of the surface grille device operates the fifth louver operating mechanism when the surface grille body becomes hot so as to forcibly open the plurality of fifth louvers and the plurality of sixth louvers to the open state regardless of the open / closed state of the third louvers and the fourth louvers.

4. a surface grating mounting portion that can be freely mounted to the mounting target portion with the surface grating body spaced apart, The surface grille mounting portion is disposed in a state in which it closes the space between the mounting target portion and the surface grille body in the vertical and horizontal directions, A surface grille device as described in claim 1 or 3, which is provided with a ventilation section that allows free ventilation between the space between the mounting target portion closed by the surface grille mounting section and the surface grille body and the outer space thereof.

5. The surface grille device according to claim 4, wherein the ventilation section is disposed at a position corresponding to the upper side of the space between the surface grille body and the mounting target section closed by the surface grille mounting section.

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