JP7780792B2 - surface lattice device - Google Patents

Description

The present invention relates to a surface grille device that includes a surface grille body equipped with multiple louvers that can be opened and closed, and that can be attached to an attachment target.

Such surface grille devices are installed, for example, on windows facing common corridors in apartment complexes and other multi-family housing, to ensure security and privacy. The surface grille device has a rectangular surface grille body with multiple louvers that can be opened and closed, and the surface grille body is attached to the exterior side of the window (see, for example, Patent Documents 1 and 2).

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.

The surface grille devices described in Patent Documents 1 and 2 are equipped with an attachment section that attaches the surface grille body to a mounting target such as a window so that it can swing between an open 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 achieved by swinging the surface grille body from the closed position, which completely blocks the window, toward the outdoors (away from the window) using the lower side of the surface grille body as a fulcrum, allowing heat from a fire to be dissipated outdoors through the open space between the window and the surface grille body.

Japanese Patent Application Laid-Open No. 2021-25244 Japanese Patent Application Laid-Open No. 2021-75973

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 its original installation position, and the surface grille body ends up in a position that protrudes further outdoors (towards the common corridor) than its original installation position. In such cases, if a fire breaks out, residents may need to evacuate through the common corridor, and the surface grille body may get in the way of the evacuating people or come into contact with them, hindering their evacuation.

In addition, 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 indoor heat from being properly dissipated to the outdoors.

In light of this situation, the primary objective of the present invention is to provide a surface grille device that can dissipate heat generated by a fire outdoors while preventing it from impeding the evacuation efforts of residents and others.

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.

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, because the grille body itself is maintained in its original installation position, it will not move to a position that protrudes outdoors. This means that heat from a fire can be dissipated to the outdoors without impeding the evacuation efforts of residents and others.

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 mounting target portion closed by the surface grille mounting portion and the surface grille body and the space outside the space.

This configuration provides a ventilation section that allows free ventilation between the space between the mounting target area, which is closed by the grille mounting section, and the grille body, and the space outside it. Therefore, regardless of whether the louvers are open or closed, indoor air can be discharged to the outdoors through the ventilation section, and conversely, air can be taken in from the outdoors to the indoors, allowing for optimal ventilation using the ventilation section.

Furthermore, in the event of a fire inside the room, the indoor air can be discharged to the outdoors through the ventilation section, separate from the louvers, allowing the heat inside the room to 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 using the ventilation section, allowing for efficient and effective heat dissipation.

A third characteristic feature of the present invention is that the ventilation section is disposed in a position corresponding to the upper side of the space between the surface grille body and the mounting target section, which is closed by the surface grille mounting section.

With this configuration, the ventilation section is positioned above the space enclosed by the grille mounting section, so that air that is heated and rises in the event of a fire can be efficiently discharged to the outdoors through the ventilation section, allowing indoor heat to be efficiently dissipated to the outdoors.

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.

With this configuration, when a user manually operates the manual operation unit, the louver operation unit opens or closes the multiple louvers in response to that manual operation, allowing the multiple louvers to be operated to the open or closed state intended by the user. Furthermore, the forced opening operation unit forcibly opens the multiple louvers to the open state by operating the louver operation unit, allowing the operation unit to be used for multiple purposes, eliminating the need for a dedicated operation unit for forced opening and simplifying the configuration.

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 or close in conjunction with the opening or 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 the open state, regardless of the open/closed state of the first louvers.

With this configuration, when a user manually operates the manual operation unit, the first louver operation unit opens or closes the first louver in response to the manual operation, and the second louver operation unit opens or closes multiple second louvers in response to the opening or closing of the first louver. This allows the first and second louvers to be opened or closed in response to manual operation by the user. A locking unit is provided to lock manual operation by the manual operation unit, preventing erroneous operation of the manual operation unit.

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, it may not be possible 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 could result in damage to the first louver or the first operation unit.

In this configuration, the forced-open 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. This leaves the open/closed state of the first louvers 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.

In a sixth characteristic configuration of the present invention, 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.

With this configuration, the manual operation unit, lock unit, and first louver operation unit are located on one left-right end of the surface grille body, while the second louver operation unit and the forced opening operation unit are located on the opposite side, on the other left-right end of the surface grille body. This separates adjacent, linked components into two, distributing them between one side and the other of the surface grille body in the left-right direction, resulting in a rational layout that efficiently secures installation space for each component.

In a seventh characteristic configuration of the present invention, the manual operation unit is disposed on one side of the surface grating body in a 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;
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 an opening or closing operation of the fifth louver;
The forced opening operating unit operates the fifth louver operating unit so that when the surface grille body becomes hot, the multiple fifth louvers and multiple sixth louvers are forcibly opened to the open state, regardless of the open/closed state of the third louvers and the fourth louvers.

With 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. Therefore, all of the third through sixth louvers can be opened or closed in response to manual operation by the user. Therefore, by arranging the manual operation unit on only one of the left and right sides of the surface grille body, it is possible to open or close both of the louvers divided on the same side and the opposite side of the manual operation unit.

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, they may not be opened properly, potentially resulting in a situation where not only the third and fourth louvers, but also the fifth and sixth louvers, cannot be forcibly opened. Furthermore, applying force to forcibly open the locked third and fourth louvers may result in excessive force being applied to the third and fourth louvers, the third and fourth louver operation units, and the fourth louver operation units, potentially resulting in damage to the third and fourth louvers, or the third and fourth louver operation units.

In this configuration, the forced-open operation unit operates the fifth louver operation unit regardless of the open/closed state of the third and fourth louvers. Operation of the fifth louver operation unit not only forcibly opens the multiple fifth louvers to an open state regardless of the open/closed state of the third and fourth louvers, but operation of the sixth louver operation unit also forcibly opens the multiple 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 multiple fifth and sixth louvers allows for sufficient heat dissipation from the indoor side to the outdoor side, while also appropriately preventing damage to the third and fourth louvers, the third louver operation unit, and the fourth louver operation unit.

Front view of the grille device from the indoor side Plan view of the surface grating device Side view of the surface grating device Schematic diagram showing the transmission of operating force when opening and closing the louvers FIG. 10 is a side view showing a fifth louver operating section. FIG. 10 is a perspective view showing a manual operation unit and a third louver operation unit; FIG. 1A is a diagram showing a locked state of a locking unit in a manual operation unit; FIG. 1B is a diagram showing an unlocked state of the locking unit in a manual operation unit; A perspective view showing a louver connection portion (A) A side view showing a forced opening operation unit, (B) A perspective view showing the forced opening operation unit. Diagram showing the operation of the forced release operation unit (A) A diagram showing the upper ventilation section, (B) A diagram showing the lower ventilation section FIG. 10 is a schematic diagram showing a transmission state of an operating force when opening and closing louvers in the surface grille device of the second embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 multi-family dwelling. 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.

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

As shown in Figure 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. In the center of the opening of the surface grille main body 4 in the left-right direction (left-right direction in Figure 1), there is a middle crosspiece 45 that extends in the vertical direction and is connected to the upper frame portion 41 and the lower frame portion 42, 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 45.

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

As shown in Figures 2 and 3, the grille mounting part 5 is configured to allow the grille body 4 to be attached to the window 2 or window frame with a gap between them. The 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 grille body 4 attached to its outdoor end. The grille mounting part 5 is arranged in a manner that blocks the space 7 between the window 2 or window frame and the grille body 4 in the vertical and horizontal directions.

As shown in Figure 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 Figure 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 as plates whose length spans the entire length of the grille main body 4 in the left-right direction, while the right mounting portion 53 and left mounting portion 54 are formed as plates whose length spans the entire length of the grille main body 4 in the up-down direction.

As shown in Figure 11(A), the upper mounting portion 51 is provided with an upper ventilation portion 55 (corresponding to a ventilation portion) that allows free ventilation between the space 7 blocked by the grille mounting portion 5 and the space outside it. Figure 11(A) is an enlarged view of the upper mounting portion 51, etc. in Figure 3. As shown in Figure 2, the upper ventilation portion 55 is formed across the entire length of the 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 based on the middle crosspiece 45. The upper ventilation portion 55 is provided with an upper filter portion 56 that prevents insects and other pests from entering the space 7 blocked by the grille mounting portion 5.

As shown in Figure 11(B), the lower mounting portion 52, like the upper mounting portion 51, is provided with a lower ventilation portion 57 (corresponding to a ventilation portion) that allows free ventilation between the space 7 blocked by the grille mounting portion 5 and the space outside it. Figure 11(B) is an enlarged view of the lower mounting portion 52, etc. in Figure 3. Like the upper ventilation portion 55, the lower ventilation portion 57 is formed across the entire length of the grille main body 4 in the left-right direction, and is divided into right and left sides in the left-right direction based on the middle crosspiece 45. The lower ventilation portion 57 is provided with a lower filter portion 58 that prevents insects and other pests from entering the space 7 blocked by the grille mounting portion 5.

Incidentally, the upper ventilation section 55 and the lower ventilation section 57 do not necessarily have to be divided into right and left sections in the left-right direction based on the middle sash section 45. For example, they can be formed as a series of holes that run the entire length of the grille body 4 in the left-right direction, or as multiple holes that are spaced apart in the left-right direction of the grille body 4. The configuration of the upper ventilation section 55 and the lower ventilation section 57 can be changed as appropriate.

As shown in Figure 1, the louvers 3 are arranged adjacently in the vertical direction of the grille body 4 at the opening of the grille body 4, with their longitudinal direction aligned with the left-right direction of the grille body 4. The opening of the grille body 4 is divided into right and left sides in the horizontal direction by the middle crosspiece 45, so the multiple louvers 3 are also arranged divided into right and left sides in the horizontal direction of the grille body 4, using the middle crosspiece 45 as the reference.

The multiple louvers 3 arranged on the right side of the grille main body 4 in the left-right direction are rotatably supported by the right frame portion 43 and the middle crosspiece 45 via rotating shafts 37 (see Figures 6 and 8) provided at both ends across the right frame portion 43 and the middle 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 grille main body 4, the louvers 3 also rotate around an axis along the left-right direction of the grille main body 4, allowing them to open and close freely. Similarly, the multiple louvers 3 arranged on the left side of the grille main body 4 in the left-right direction are rotatably supported by the left frame portion 44 and the middle crosspiece 45 via rotating shafts 37 provided at both ends across the left frame portion 44 and the middle crosspiece 45. Rotation of the rotating shafts 37 also rotates the louvers 3, allowing them to open and close freely.

1, the surface grille body 4 is provided with a manual operation unit 8 that can be manually operated by a user or the like, and a louver operation unit 9 (corresponding to a louver operation mechanism) that operates the multiple louvers 3 to open or close the multiple louvers 3 in accordance with manual operation by the manual operation unit 8. When a user or the like manually operates the manual operation unit 8, the louver operation unit 9 opens or closes the multiple louvers 3 in accordance with the manual operation, allowing the multiple louvers 3 to be freely operated to the open or closed state intended by the user or the like.

One manual operation unit 8 is disposed on the upper and lower sides of the grille body 4 in the vertical direction, and correspondingly, one louver operation unit 9 is also provided on 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 division into upper louvers 3a and lower louvers 3b can be changed as appropriate.

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

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.

As described above, the multiple louvers 3 are divided into right and left sides as shown in Figure 1, and each of the right and left louvers 3 is divided into an upper louver 3a and a lower louver 3b. Therefore, by manually operating the upper manual operation unit 8, the upper louvers 3a are opened and closed in unison, and by manually operating the lower manual operation unit 8, the lower louvers 3b are opened and closed in unison, and the lower louvers 3b are opened and closed in unison, and the lower louvers 3b are opened and closed in unison.

The following describes the configuration for opening and closing the louvers 3. However, because the upper manual operation unit 8 and the upper louver operation unit 9 have the same configuration as the lower manual operation unit 8 and the lower louver operation unit 9, only the upper manual operation unit 8 and the louver operation unit 9 will be described, and a description of the lower manual operation unit 8 and the louver operation unit 9 will be omitted.

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

For example, of the multiple louvers 3 divided on the same side as the manual operation unit 8 (the right side in Figure 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 Figure 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, Figure 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, so there are two third louvers 33 and two fourth louvers 34, one on the upper side and one on the lower side.

Figure 4 is a schematic diagram showing the state of transmission of operating forces when opening and closing the louvers 3. As shown in Figure 4, the louver operating unit 9 is equipped with a third louver operating unit 93 (corresponding to the third louver operating mechanism) that operates the third louver 33 to open and close, a fourth louver operating unit 94 (corresponding to the fourth louver operating mechanism) that operates the fourth louver 34 to open and close, a fifth louver operating unit 95 (corresponding to the fifth louver operating mechanism) that operates the fifth louver 35 to open and close, and a sixth louver operating unit 96 (corresponding to the sixth louver operating mechanism) that operates the sixth louver 36 to open and close.

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 back 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 back from the right side to the left. In this way, the multiple louvers 3 divided into left and right sections are opened and closed in a linked manner by manually operating the manual operation unit 8 in the order of third louver 33 → fourth louver 34 → fifth louver 35 → sixth louver 36.

(Human operation section)
As shown in Fig. 6, the manual operation unit 8 is provided 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.

As shown in Figure 7, the locking unit 82 is equipped with a locking operation unit 84 that can move up and down relative to a case 83 that rotatably supports the operation dial 81, an engagement unit 85 that can engage with a recess in the operation dial 81, whose outer periphery is formed in an uneven shape, and a biasing unit (elastic spring) 86 that biases the engagement unit 85 in the direction that engages with the recess in the operation dial 81.

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, engaging the engagement unit 85 with the recessed portion of the operation dial 81 and locking the rotation 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 moves downward with the pressing portion 87 of the lock operation unit 84 pressing against the engagement unit 85, moving the engagement unit 85 downward against the biasing force of the biasing unit 86, disengaging the engagement unit 85 from the recessed portion of the operation dial 81 and unlocking the rotation of the operation dial 81.

(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 includes a rotary gear 93a that meshes with the handle gear 81a of the operating dial 81 and a rotary cam portion 93b that rotates in conjunction with the rotation of the rotary gear 93a. The rotary cam portion 93b is connected to a rotary shaft portion 37 that rotates 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, thereby rotating the rotary shaft portion 37 integrally with the third louver 33 and operating to open or close the third louver 33.

(4th louver operation section)
As shown in Figures 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 Figure 8 , the fourth louver operating unit 94 includes a louver connecting portion 941 that connects the rotation shaft portion 37 of the third louver 33 to the rotation shaft portion 37 of the fourth louver 34. The louver connecting portion 941 is provided inside the middle sash portion 45, and in Figure 8 , the middle sash portion 45 and other components are omitted to show the louver connecting portion 941. The fourth louver operating unit 94 connects the third louver 33 to the fourth louver 34 via 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 rotational operating force of the third louver 33 is transmitted to the fourth louver 34 via 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 or nut) that fixedly connects the third connection portion 941a and the fourth connection portion 941b.

(Fifth 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.

As shown in Figure 5, the fifth interlocking bar 951 is formed in the shape of a rod extending in the vertical direction and is supported within the left frame portion 44 so that it can move freely in the vertical direction. In addition to the fifth interlocking bar 951, the fifth louver operating portion 95 is equipped with a rotational force transmission portion 952 that can rotate integrally with the rotation shaft portion 37 of the fourth louver 34, and a rotation cam portion 953 that can rotate integrally with the fifth louver 35.

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, selected 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 engaging unit 954 fixed to the fifth interlocking bar 951 is engaged with this 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 engaging 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, moving the fifth interlocking bar 951 up and down.

As shown in Figure 5, a rotating cam portion 953 is provided for each of the multiple fifth louvers 35, with one end connected to the rotation shaft portion 37 of the fifth louver 35 and the other end rotatably supported by the fifth interlocking bar 951. When the fifth interlocking bar 951 moves up or down, the rotating cam portion 953 converts this up or down movement into rotational force and transmits it to the rotation shaft portion 37 of the fifth louver 35, causing the fifth louver 35 to rotate.

In this way, as shown in Figure 4, the fifth louver operating unit 95 transmits the rotational force of the fourth louver 34 to the fifth interlocking bar 951 via the rotational force transmission unit 952, 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.

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. Figure 5(A) shows the fifth louver 35 rotated to the fully open state, and Figure 5(B) shows the fifth louver 35 rotated to the fully closed state.

(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 louver 35a for transmitting rotational force and the sixth louver 36a for transmitting rotational force, and a sixth interlocking bar 962 that can rotate the plurality of 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 plurality of fifth louvers 35, one fifth louver 35 connected by the louver connecting portion 961 is the fifth louver 35a for transmitting rotational force, and one sixth louver 36 connected by the louver connecting portion 961 among the plurality of sixth louvers 36 is the sixth louver 36a for transmitting rotational force. The fifth louver 35a for transmitting rotational force and the sixth louver 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.

As shown in Figure 8, the louver connection portion 961 of the sixth louver operating unit 96 has a configuration similar to the louver connection portion 941 of the fourth louver operating unit 94. By connecting the fifth louver 35 and the sixth louver 36 via the louver connection portion 961, the movement of the fifth louver 35a for transmitting rotational force and the movement of the sixth louver 36a for transmitting rotational force are linked. Therefore, when the fifth louver 35a for transmitting rotational force is rotated, the rotational operating force of the fifth louver 35a for transmitting rotational force is transmitted to the sixth louver 36a for transmitting rotational force via 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 rotation shaft portion 37 of the fifth louver 35a for transmitting rotational force, a sixth connection portion 961b connected to the rotation shaft portion 37 of the sixth louver 36a for transmitting rotational force, and a fixing device 961c (for example, a fastener such as a bolt or nut) that securely connects the fifth connection portion 961a and the sixth connection portion 961b.

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 vertically and is supported within the right frame portion 43 so as to be freely movable vertically. 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 multiple sixth louvers 36 other than the sixth louver 36a for transmitting rotational force. The rotational cam portion is provided only for the multiple 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 multiple sixth louvers 36 other than the sixth louver 36a for transmitting rotational force are rotated, but the third louver 33 is not rotated.

In this way, as shown in FIG. 4, the sixth louver operating unit 96 transmits the rotational force of the fifth louver 35a for transmitting rotational force to the sixth louver 36a for transmitting rotational force via the louver connecting 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 transmitting unit, which moves the sixth interlocking bar 962 in the vertical direction. By moving the sixth interlocking bar 962, the sixth louvers 36 other than the sixth louver 36a for transmitting rotational force are rotated.

As described above, as shown in Figure 4, the louver operating unit 9 opens and closes in conjunction with the third to sixth louver operating units 93 to 96 in the following order in response to manual operation of the manual operating unit 8: 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 this embodiment, in the event of a fire indoors, for example, 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, in order to radiate heat from the indoor side to the outdoor side. The forced opening section 10 is provided in the left frame section 44 arranged 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 from Figure 5, and Figure 10 is an enlarged view of the forced opening section 10 and other components from Figure 5, showing the operation of the forced opening section 10 and other components.

5 and 10 , the forced opening unit 10 is provided with a forced opening operation unit 101 (corresponding to a forced opening operation mechanism) that operates the louver operation unit 9 so as to forcibly open the plurality of louvers 3 to an open state when the surface grille main body 4 reaches a high temperature. The forced opening operation unit 101 is configured to operate the fifth louver operation unit 95 so as to forcibly open the plurality of fifth louvers 35 and the plurality of sixth louvers 36 to an open state when the surface grille main body 4 reaches a high temperature, regardless of the open/closed states of the third louvers 33 and the fourth louvers 34.

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

(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 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)).

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

A bent, plate-shaped 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, but at a distance from, the pressing portion 104a of the first forced opening rotating cam portion 104. 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, causing the pressing portion 104a to press the pressed portion 105a. This pressing operation allows the second forced opening rotating cam portion 105 to rotate freely integrally with the first forced opening rotating cam portion 104.

A bifurcated recess 105b is formed at the other end of the second forced opening rotation cam portion 105, and as shown in FIG. 10, an engagement portion 954 fixed to the fifth interlocking bar 951 engages with this 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. Because the second forced opening rotation cam portion 105 rotates integrally with the first forced opening rotation cam portion 104, its rotational force is transmitted to the fifth interlocking bar 951, allowing the fifth interlocking bar 951 to be freely moved up and down.

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

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 rotational direction (clockwise as indicated by arrow X1 in Figure 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 rotational direction (clockwise as indicated by arrow X1 in Figure 10(B)).

By rotating the second forced-open rotating cam portion 105, the fifth interlocking bar 951 is moved 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. 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).

As shown in FIG. 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 toward 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 rotation of the fifth louver 35a for transmitting rotational force 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 toward 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.

When the forced-open operation unit 101 operates to move the fifth interlocking bar 951 of the fifth louver operation unit 95, the movement operation force of 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 rotatable integrally with the rotation shaft 37 of the fourth louver 34. Therefore, when the movement operation force of 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.

In this embodiment, the forced opening operation unit 101 is provided with a link release unit 108 that, as shown in FIG. 9, 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. As shown in FIGS. 5(C) and 10(C), this 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, 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.

As shown in Figure 9, the link 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 rotational shaft 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 rotational shaft 37 is maintained against the biasing force of the release biasing unit 109, and a connection release state in which the connection can be released by the biasing force of the release biasing unit 109.

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

The release biasing portion 109 is formed 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 exerts a biasing force to move the rotational force transmission portion 952 in the direction that releases the engagement with the spacer portion 111 (the direction indicated by arrow X2 in Figure 9 (A)).

The connection state switching unit 110 is composed of a part of the first forced opening rotating cam unit 104. The part of the first forced opening rotating cam unit 104, which is the connection state switching unit 110, is located on the side that releases engagement with the spacer unit 111 (in the direction indicated by arrow X2 in Figure 9(A)), and thereby abuts against the rotational force transmission unit 952, restricting movement of the rotational force transmission unit 952 toward the side that releases engagement with the spacer unit 111 (in the direction indicated by arrow X2 in Figure 9(A)), thereby switching to a connection maintenance state. Conversely, because 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 engagement with the spacer portion 111 (in the direction indicated by arrow X2 in FIG. 9A), the biasing force of the release biasing portion 109 moves the rotational force transmission portion 952 to the side that releases engagement of the rotational force transmission portion 952 with the spacer portion 111 (in the direction indicated by arrow X2 in FIG. 9A), switching to the disconnected state.

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

In contrast, when the temperature reaches a high temperature and the thermal fuse portion 102 melts, as shown in FIG. 10(B), the first forced opening rotating cam portion 104 rotates to one side of the rotational direction (clockwise as indicated by arrow X1 in FIG. 10(B)) due to the biasing force of the biasing portion 107. As a result, a portion of the first forced opening rotating cam portion 104, which is the connection state switching portion 110, rotates to a position (to the lower right in FIG. 10(B)) that is not overlapping with the rotational force transmission portion 952 in the direction perpendicular to the paper. Therefore, the portion of the first forced opening rotating cam portion 104, which is the connection state switching portion 110, does not abut against the rotational force transmission portion 952, and the biasing force of the release biasing portion 109 causes the rotational force transmission portion 952 to move forward in the direction perpendicular to the paper. As a result, as shown in Figure 10 (C), the rotational force transmission part 952 enters a disconnected state in which it is no longer engaged with the spacer part 111, and falls downward, detaching from the spacer part 111.

In this way, as shown in FIG. 5(C), the link release unit 108 releases the connection between the rotational force transmission unit 952 and the fifth interlocking bar 951, thereby disengaging 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).

As described above, in the event of a fire inside the room, the forced opening operation unit 101 forcibly opens the multiple fifth louvers 35 and the multiple 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 multiple fifth louvers 35 and the multiple sixth louvers 36 in the fully open state, indoor heat can be effectively dissipated to the outdoors.

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

In this embodiment, not only are the numerous louvers 3 opened fully, but as shown in Figure 11, an upper ventilation section 55 and a lower ventilation section 57 are also provided, allowing indoor air to be exhausted to the outdoors through the upper ventilation section 55 and the lower ventilation section 57, and exhausting this air also allows indoor heat to be dissipated to the outdoors.

Furthermore, the upper ventilation section 55 is provided on the upper mounting section 51 that closes the space 7 between the window 2 and the grille body 4, so that 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.

In addition to the upper ventilation section 55, the lower ventilation section 57 is also provided as a ventilation section. This means that not only can indoor air be discharged to the outdoors through the lower ventilation section 57, but in some cases, rising air currents caused by heating can also occur, causing outdoor air to flow in through the lower ventilation section 57. When this occurs, the air in space 7 is cooled by the inflow of outdoor air, which can be expected to have the effect of suppressing the temperature rise in space 7.

Second Embodiment
The second embodiment is a different embodiment of the arrangement of the plurality of louvers 3. The arrangement of the plurality of 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 the description thereof will be omitted.

In the first embodiment, as shown in Figure 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 Figure 12, the surface grille main body 4 does not have a center crosspiece 45, and multiple louvers 3 extending continuously across the entire length of the surface grille main body 4 in the left-right direction are arranged adjacent to each other in the vertical direction relative to the rectangular opening of the surface grille main body 4.

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

The following describes the configuration for opening and closing the louvers 3. However, because the upper manual operation unit 8 and the upper louver operation unit 9 have the same configuration as the lower manual operation unit 8 and the lower louver operation unit 9, only the upper manual operation unit 8 and the louver operation unit 9 will be described, and a description of the lower manual operation unit 8 and the louver operation unit 9 will be omitted.

12, similar to Fig. 4 of the first embodiment, schematically shows the transmission state of operating forces when opening and closing the louvers 3 in the surface grille device 1. The louver operating unit 9 is provided with a first louver operating unit 91 (corresponding to the first louver operating mechanism) that operates to open and close the first louvers 31, and a second louver operating unit 92 (corresponding to the second louver operating mechanism) that operates to open and close the second louvers 32.

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, then the second louver 32, are opened and closed in a coordinated manner in response to manual operation by the manual operation unit 8, thereby opening and closing multiple louvers 3 in a coordinated manner.

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 equipped with a second interlocking bar 921 that corresponds to the fifth interlocking bar 951 of the fifth louver operation unit 95. The forced opening unit 10 also has the same configuration as in the first embodiment, so its description will be omitted.

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

[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.

(1) In the above embodiment, an upper ventilation section 55 and a 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, if 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 allowing ventilation in the left-right direction in the space 7 between the window 2 and the surface grille body 4.

(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.

(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 create 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, at a timing such as after the multiple louvers 3 have been forcibly opened to an open state, the surface grille body 4 can be opened by using its lower end as a fulcrum and slightly swinging its upper end toward the outdoors, thereby allowing the air inside the room to be discharged to the outdoors through the open space.

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

1. Surface grille device 2. Window (mounting target part)
3 Louver 4 Surface grille body 5 Surface grille mounting portion 7 Space 8 Manual operation portion 9 Louver operation portion 10 Forced opening portion 31 First louver 32 Second louver 33 Third louver 34 Fourth louver 35 Fifth louver 36 Sixth louver 55 Upper ventilation portion (ventilation portion)
57 Lower ventilation section (ventilation section)
82 Locking section 91 First louver operating section 92 Second louver operating section 93 Third louver operating section 94 Fourth louver operating section 95 Fifth louver operating section 96 Sixth louver operating section 101 Forced opening operating section

Claims (5)

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 . 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. 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 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 . 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. 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.