Smoke detector

Abstract

A smoke detector 1 according to one embodiment of the present invention includes a housing 11 and a smoke detection unit 13 housed in the housing 11. The smoke detection unit 13 has a sensor 131 that detects smoke in the air, an intake section 132 connected to an intake pipe 7, and an exhaust section 133 connected to an exhaust pipe 8. The smoke detection unit 13 is held in the housing 11 in either a first arrangement direction in which the intake section 132 is on the upper side or a second arrangement direction in which the intake section 132 is on the lower side, depending on the positions of the intake pipe 7 and the exhaust pipe 8. The housing 11 has a piping hole H1 through which the intake pipe 7 passes and a piping hole H2 through which the exhaust pipe 8 passes when the smoke detection unit 13 is held in the first arrangement direction. The housing 11 also has a piping hole H3 through which the intake pipe 7 passes and a piping hole H4 through which the exhaust pipe 8 passes when the smoke detection unit 13 is held in the second arrangement direction.

Description

[Technical Field]

[0001] The present invention relates to a device for detecting smoke. [Background technology]

[0002] 2. Description of the Related Art There is a smoke detection device that detects the generation of smoke in a monitored space by detecting smoke contained in the monitored space.

[0003] A smoke detection device generally includes a sensor that detects smoke and a housing that houses the sensor. Some smoke detection devices also include a suction unit (such as a fan) that creates an airflow from the outside toward the sensor inside the housing, and a filter that prevents dust contained in the air toward the sensor from adhering to the sensor.

[0004] In some cases, maintenance of the smoke detection device can be facilitated by configuring some of the components of the smoke detection device as units that can be detached from the housing. For example, if the suction unit is configured as a detachable unit (hereinafter referred to as the suction unit), in the event of a malfunction or other problem with the suction unit, the suction unit including the malfunctioning suction unit can be replaced with a working suction unit at the site where the smoke detection device is installed, thereby easily restoring the smoke detection device to normal.

[0005] As described above, a patent document disclosing a smoke detection device having some of its components as a detachable unit is, for example, Patent Document 1. Patent Document 1 describes a smoke detection device that has, as units that can be individually detached from a housing, a suction unit that draws in outside air, a detection unit that detects smoke particles from the drawn-in outside air, a casing through which the drawn-in outside air passes, and a filter within the casing for removing dust particles from the outside air. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-108140 Summary of the Invention [Problem to be solved by the invention]

[0007] In some cases, it may be desirable to place a smoke detection device in a space other than the one being monitored. In such cases, it is necessary to install a pipe (hereinafter referred to as the intake pipe) that guides the air from the monitored space into the space housing the smoke detection device's sensor, and a pipe (hereinafter referred to as the exhaust pipe) that guides the air that has been guided into the sensor's space to the space where it is to be exhausted, and then connect these intake pipe and exhaust pipe to the smoke detection device.

[0008] Fig. 13 is a diagram showing a schematic configuration of a smoke detection device 9 according to the prior art, which is connected to an intake pipe and an exhaust pipe. Fig. 13(A) shows the appearance of the smoke detection device 9, and Fig. 13(B) shows the smoke detection device 9 with a cover 911 that forms the front part of a housing 91 provided in the smoke detection device 9 removed. Fig. 13(C) is a top view of the smoke detection device 9, and Fig. 13(D) is a bottom view of the smoke detection device 9.

[0009] The smoke detection device 9 includes, as components visible from the outside, a housing 91 and a display unit 92. The display unit 92 includes, for example, a touch screen, and displays various information to the user and serves as a user interface that accepts touch operations by the user. An opening (window) is provided in the lid 911 according to the position of the display unit 92, so that even when the lid 911 is attached, the display unit 92 can be seen from outside the housing 91, and the display unit 92 can also be operated by touch.

[0010] The smoke detection device 9 is connected to an intake pipe 7, which is a pipe that guides air from the monitored space S1 to the smoke detection device 9, and an exhaust pipe 8, which is a pipe that guides air from the smoke detection device 9 to the exhaust space S2.

[0011] The housing 91 accommodates a smoke detection unit 93, a power supply unit 94, and a data processing unit 95 in addition to the display unit 92. The display unit 92, the smoke detection unit 93, the power supply unit 94, and the data processing unit 95 are each held in a predetermined position by the housing 91. The housing 91 may hold these components by any method, such as screwing, fitting, hanging with a hook, connecting with a hook-and-loop fastener, or adhering with double-sided tape or the like.

[0012] The smoke detection unit 93 has a sensor 931, an intake section 932, and an exhaust section 933. The sensor 931 detects smoke in the air. The sensor 931 is, for example, a photoelectric smoke sensor that includes a light-emitting section, a light-receiving section, and a determination section, and receives light emitted from the light-emitting section and reflected by particles in the air with the light-receiving section, and determines whether or not smoke is present in the air based on the intensity of the light received by the determination section. However, the method by which the sensor 931 detects smoke is not limited to this. The sensor 931 is disposed in an accommodation space formed within the housing of the smoke detection unit 93.

[0013] The intake unit 932 is connected to the intake pipe 7 and is a member that forms a flow path for air from the space S1 that is the target of smoke monitoring to the space that houses the sensor 931. The exhaust unit 933 is connected to the exhaust pipe 8 and is a member that forms a flow path for air from the space that houses the sensor 931 to the space S2 that is the exhaust destination.

[0014] The power supply unit 94 supplies power to the components of the smoke detection device 9 that require power, including the smoke detection unit 93 .

[0015] The data processing unit 95 performs processing using the data generated by the smoke detection unit 93. Examples of processing performed by the data processing unit 95 include, but are not limited to, storing the data, transmitting the data to an external device, determining whether or not there is smoke based on the data, and controlling the display unit 92 to issue a warning or other notification in accordance with the result of the determination of whether or not there is smoke.

[0016] In addition to the display unit 92, smoke detection unit 93, power supply unit 94, and data processing unit 95, the housing 91 also accommodates, for example, a power transmission cable for supplying power from the power supply unit 94 to the smoke detection unit 93, etc., and a communication cable for communicating data between the data processing unit 95 and the smoke detection unit 93, etc., but these components are omitted from Figure 13.

[0017] As shown in Figure 13(B), the housing 91 has a piping hole H1, which is a hole that allows the intake pipe 7 to pass through, and a piping hole H2, which is a hole that allows the exhaust pipe 8 to pass through, when the smoke detection unit 93 is held in a predetermined position in the housing 91.

[0018] When smoke occurs in the monitored space S1, the smoke detection device 9 having the above configuration detects smoke particles in the air that are guided through the intake pipe 7 and reach the smoke detection device 9, and issues a warning of smoke occurrence, for example, using the display unit 92, or sends a warning message to a terminal device used by the manager. Note that the method by which the smoke detection device 9 issues a warning or the like is not limited to these. For example, the smoke detection device 9 may be equipped with a sound generating unit such as a buzzer or speaker and emit a sound or voice indicating a warning, or may be equipped with a warning light and issue a warning by turning on the warning light, etc.

[0019] The smoke detection device 9 configured as described above can be used when the intake pipe 7 is located above the smoke detection device 9 and the exhaust pipe 8 is located below the smoke detection device 9, as shown in Fig. 13, but cannot be used as is when the positions of the intake pipe 7 and the exhaust pipe 8 are reversed. Fig. 14 shows a case where the smoke detection device 9 is installed upside down from the installation direction shown in Fig. 13, in a situation where the intake pipe 7 is located below the installation position of the smoke detection device 9 and the exhaust pipe 8 is located above the installation position of the smoke detection device 9.

[0020] In this case, as shown in Figures 14(A) and 14(B), the information displayed on the display unit 92 will be upside down. Even if the information displayed on the display unit 92 can be prevented from being upside down as shown in Figure 14(C) by, for example, providing the display unit 92 with a function to rotate information by 180 degrees, the user interface may be located at the bottom of the smoke detection device 9, which may reduce operability. Furthermore, if the manufacturer's name or the like (for example, "XYZ" shown in Figure 14) is printed or otherwise formed on the lid 911 of the housing 91, it is unavoidable that the information printed on the lid 911 will be upside down.

[0021] In order to solve the above problem, it is conceivable to manufacture a smoke detection unit 93 in which the positions of the intake section 932 and the exhaust section 933 are reversed to those of the smoke detection unit 93 shown in Fig. 13, as shown in Fig. 15. In this case, it is necessary to separately prepare two types of smoke detection units 93 with different configurations.

[0022] Furthermore, for example, as shown in Fig. 16, it is possible to mount a smoke detection unit 93 having the same configuration as the smoke detection unit 93 shown in Fig. 13 on a housing 91 in an arrangement direction that is upside down relative to the arrangement direction shown in Fig. 13. In this case, it is necessary to prepare a separate housing 91 in which the positions of the piping holes H1 and H2 are different from those of the housing 91 shown in Fig. 13.

[0023] In view of the above circumstances, the present invention provides a smoke detection device that can be used without replacing major parts even if the relative positions of the connected intake pipe and exhaust pipe are different. [Means for solving the problem]

[0024] In order to solve the above problems, the present invention proposes a smoke detection device comprising: a smoke detection unit having a sensor for detecting smoke in the air; an intake section connected to an intake pipe that forms a flow path for air from a space to be monitored toward a space accommodating the sensor; and an exhaust section connected to an exhaust pipe that forms a flow path for air from the space accommodating the sensor toward a space to which air is exhausted; and a housing that can selectively hold and accommodate the smoke detection unit in either a first arrangement orientation or a second arrangement orientation, the housing having a first piping hole that allows the intake section or the intake pipe to pass through when the smoke detection unit is held in the first arrangement orientation, a second piping hole that allows the exhaust section or the exhaust pipe to pass through when the smoke detection unit is held in the first arrangement orientation, a third piping hole that allows the intake section or the intake pipe to pass through when the smoke detection unit is held in the second arrangement orientation, and a fourth piping hole that allows the exhaust section or the exhaust pipe to pass through when the smoke detection unit is held in the second arrangement orientation. [Effects of the Invention]

[0025] According to the present invention, even if the relative positions of the connected intake pipe and exhaust pipe are different, the same smoke detection device can be used without replacing major parts by changing the arrangement direction of the smoke detection unit held in the housing. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is a diagram schematically illustrating the configuration of a smoke detection device according to an embodiment. [Figure 2] 1 is a diagram schematically illustrating the configuration of a smoke detection device according to an embodiment. [Figure 3] FIG. 10 is a diagram schematically illustrating the configuration of a smoke detection device according to a modified example. [Figure 4] FIG. 10 is a diagram schematically illustrating the configuration of a smoke detection device according to a modified example. [Figure 5] FIG. 10 is a diagram schematically illustrating the configuration of a smoke detection device according to a modified example. [Figure 6] FIG. 10 is a diagram schematically illustrating the configuration of a smoke detection device according to a modified example. [Figure 7]FIG. 10 is a diagram schematically illustrating the configuration of a smoke detection device according to a modified example. [Figure 8] FIG. 10 is a diagram schematically illustrating the configuration of a smoke detection device according to a modified example. [Figure 9] FIG. 10 is a diagram schematically illustrating the configuration of a smoke detection device according to a modified example. [Figure 10] FIG. 10 is a diagram schematically illustrating the configuration of a smoke detection device according to a modified example. [Figure 11] FIG. 10 is a diagram schematically illustrating the configuration of a smoke detection device according to a modified example. [Figure 12] FIG. 10 is a diagram schematically illustrating the configuration of a smoke detection device according to a modified example. [Figure 13] FIG. 1 is a diagram schematically illustrating the configuration of a smoke detection device according to a conventional technique. [Figure 14] FIG. 1 is a diagram schematically illustrating the configuration of a smoke detection device according to a conventional technique. [Figure 15] FIG. 1 is a diagram schematically illustrating the configuration of a smoke detection device according to a conventional technique. [Figure 16] FIG. 1 is a diagram schematically illustrating the configuration of a smoke detection device according to a conventional technique. DETAILED DESCRIPTION OF THE INVENTION

[0027] [Embodiment] A smoke detection device 1 according to one embodiment of the present invention will be described below. Fig. 1 is a diagram schematically illustrating the configuration of the smoke detection device 1. Fig. 1(A) shows the appearance of the smoke detection device 1, and Fig. 1(B) shows the smoke detection device 1 with a cover 111 that forms the front portion of a housing 11 thereof removed. Fig. 1(C) is a top view of the smoke detection device 1, and Fig. 1(D) is a bottom view of the smoke detection device 1.

[0028] The smoke detection device 1 includes a display unit 12 having the same configuration as the display unit 92 included in the smoke detection device 9, a smoke detection unit 13 having the same configuration as the smoke detection unit 93 included in the smoke detection device 9, a power supply unit 14 having the same configuration as the power supply unit 94 included in the smoke detection device 9, and a data processing unit 15 having the same configuration as the data processing unit 95 included in the smoke detection device 9.

[0029] The smoke detection unit 13 has a sensor 131 having the same configuration as the sensor 931 of the smoke detection unit 93, an intake section 132 having the same configuration as the intake section 932 of the smoke detection unit 93, and an exhaust section 133 having the same configuration as the exhaust section 933 of the smoke detection unit 93.

[0030] The smoke detection device 1 includes a housing 11 having piping holes H3 and H4 in addition to the piping holes H1 and H2 that the housing 91 of the smoke detection device 9 has.

[0031] The smoke detection device 1 shown in Figure 1 is in a state where the intake pipe 7 is located above the installation position of the smoke detection device 1 and the exhaust pipe 8 is located below the installation position of the smoke detection device 1. In this state of the smoke detection device 1, the piping holes H3 and H4 are not used. Therefore, the smoke detection device 1 is provided with two caps 16 as members for covering these unused piping holes. Note that the caps 16 are omitted from Figures 1(C) and 1(D).

[0032] Fig. 2 is a diagram showing the smoke detection device 1 in a situation where the intake pipe 7 is located below the installation position of the smoke detection device 1 and the exhaust pipe 8 is located above the installation position of the smoke detection device 1. Fig. 2(A) shows the appearance of the smoke detection device 1, and Fig. 2(B) shows the state where the lid 111 of the housing 11 is removed.

[0033] In the smoke detection device 1 shown in Fig. 2, firstly, the arrangement direction of the smoke detection unit 13 is different from that of the smoke detection device 1 shown in Fig. 1. That is, in the smoke detection device 1 shown in Fig. 1, the smoke detection unit 13 is held in the housing 11 in an arrangement direction such that the intake section 132 is on the upper side and the exhaust section 133 is on the lower side. On the other hand, in the smoke detection device 1 shown in Fig. 2, the smoke detection unit 13 is held in the housing 11 in an arrangement direction such that the intake section 132 is on the lower side and the exhaust section 133 is on the upper side. In other words, the arrangement direction of the smoke detection unit 13 shown in Fig. 2 is an arrangement direction obtained by rotating the smoke detection unit 13 shown in Fig. 1 by 180 degrees clockwise (or counterclockwise).

[0034] The shape, screw hole positions, etc. of the housing 11 are configured so that the smoke detection unit 13 can be selectively held and housed in either the arrangement direction shown in Figure 1 or the arrangement direction shown in Figure 2.

[0035] In this embodiment, the housing 11 holds the smoke detection unit 13 by screws, but the method by which the housing 11 holds the smoke detection unit 13 is not limited to screws. For example, any method may be used, such as fitting, hanging with a hook, connecting with a hook-and-loop fastener, or adhering with double-sided tape. However, from the viewpoint of ease of maintenance, it is desirable to use a method that allows the smoke detection unit 13 to be easily attached and detached to the housing 11.

[0036] 2 differs from the smoke detection device 1 shown in Fig. 1 in that the intake pipe 7 is connected to the intake section 132 while passing through piping hole H3 instead of piping hole H1, and the exhaust pipe 8 is connected to the exhaust section 133 while passing through piping hole H4 instead of piping hole H2. Another difference is that the cap 16 is attached to the housing 11 so as to block piping holes H1 and H2, rather than blocking piping holes H3 and H4.

[0037] A worker installing the smoke detection device 1, for example, removes the lid 111 from the housing 11 and installs the smoke detection device 1 in the desired location, then changes the orientation of the smoke detection unit 13 if necessary depending on the positional relationship of the intake pipe 7 and the exhaust pipe 8 to the smoke detection device 1, and then connects the intake pipe 7 and the exhaust pipe 8 to the smoke detection unit 13. Then, after attaching a cap 16 to an unused piping hole, the worker attaches the lid 111 to the housing 11. Note that the order of these operations may be changed as appropriate.

[0038] The smoke detector 1 described above can be used without changing any parts even if the intake pipe 7 and the exhaust pipe 8 are positioned in different vertical positions.

[0039] [Variations] The above-described embodiment is a specific example of the present invention, and various modifications are possible within the scope of the technical concept of the present invention. Examples of such modifications are shown below. Note that two or more of the following modifications may be combined as appropriate.

[0040] (Variation 1) In the above-described embodiment, the intake pipe 7 and the exhaust pipe 8 are located above and below the smoke detection device 1, but the positional relationship between the intake pipe 7, the exhaust pipe 8 and the smoke detection device 1 is not limited to this.

[0041] FIG. 3 shows an example in which one of the intake pipe 7 and the exhaust pipe 8 is located on the right side of the smoke detection device 1, and the other of the intake pipe 7 and the exhaust pipe 8 is located above or below the smoke detection device 1. In the smoke detection unit 13 provided in the smoke detection device 1 shown in FIG. 3, the intake section 132 and the exhaust section 133 are respectively arranged on adjacent sides of the housing of the smoke detection unit 13. FIG. 3(A) shows the smoke detection device 1 installed in a situation in which the intake pipe 7 is located above the smoke detection device 1 and the exhaust pipe 8 is located to the right of the smoke detection device 1. On the other hand, FIG. 3(B) shows the smoke detection device 1 installed in a situation in which the intake pipe 7 is located to the right of the smoke detection device 1 and the exhaust pipe 8 is located below the smoke detection device 1. The arrangement direction of the smoke detection unit 13 shown in FIG. 3(B) is rotated 90 degrees clockwise from the arrangement direction of the smoke detection unit 13 shown in FIG. 3(A).

[0042] FIG. 4 shows an example in which both the intake pipe 7 and the exhaust pipe 8 are located above or below the smoke detection device 1. In the smoke detection unit 13 provided in the smoke detection device 1 shown in FIG. 4, the intake section 132 and the exhaust section 133 are arranged side by side on the same side of the housing of the smoke detection unit 13. FIG. 4(A) shows the smoke detection device 1 installed in a situation in which the intake pipe 7 and the exhaust pipe 8 are located above the smoke detection device 1. On the other hand, FIG. 4(B) shows the smoke detection device 1 installed in a situation in which the intake pipe 7 and the exhaust pipe 8 are located below the smoke detection device 1. The arrangement direction of the smoke detection unit 13 shown in FIG. 4(B) is rotated 180 degrees clockwise (or counterclockwise) from the arrangement direction of the smoke detection unit 13 shown in FIG. 4(A).

[0043] (Variation 2) In the above-described embodiment, the two arrangement directions of the smoke detection unit 13 selected depending on the positions of the intake pipe 7 and the exhaust pipe 8 are rotated around an axis perpendicular to the surface of the smoke detection unit 13 visible in Fig. 1(B) or 2(B). Alternatively, or in addition, the two arrangement directions of the smoke detection unit 13 selected depending on the positions of the intake pipe 7 and the exhaust pipe 8 may be in a relationship where the surface of the smoke detection unit 13 visible in Fig. 1(B) or 2(B) is the front surface, with the front and back surfaces reversed.

[0044] 5A and 5B are diagrams illustrating a smoke detection device 1 configured so that the housing 11 can hold the smoke detection unit 13 in two orientations, with the front and back sides reversed. The smoke detection unit 13 shown in Fig. 5B is attached to the housing 11 in an orientation obtained by rotating the smoke detection unit 13 shown in Fig. 5A by 180 degrees around a horizontal axis.

[0045] (Variation 3) In the above-described embodiment, the piping holes H1, H2, H3, and H4 of the housing 11 are different holes, but these two may be the same hole.

[0046] Fig. 6 illustrates a smoke detection device 1 including a housing 11 that can hold a smoke detection unit 13 having an intake section 132 and an exhaust section 133 on each of adjacent sides of the housing in different orientations rotated by 90 degrees around an axis perpendicular to the page, similar to the smoke detection device 1 illustrated in Fig. 3. However, the position of the intake section 132 of the smoke detection unit 13 shown in Fig. 6 is different from the position of the intake section 132 of the smoke detection unit 13 shown in Fig. 3.

[0047] The housing 11 shown in Fig. 6 has a piping hole H1 on its upper surface, through which the intake pipe 7 can pass when the smoke detection unit 13 is held in the orientation shown in Fig. 6(A), and a piping hole H2 on its right surface, through which the exhaust pipe 8 can pass when the smoke detection unit 13 is held in the orientation shown in Fig. 6(A). The housing 11 shown in Fig. 6 also has a piping hole H4 on its lower surface, through which the exhaust pipe 8 can pass when the smoke detection unit 13 is held in the orientation shown in Fig. 6(B). The piping hole H2 also serves as the piping hole H3, through which the intake pipe 7 can pass when the smoke detection unit 13 is held in the orientation shown in Fig. 6(B). In other words, the piping hole H2 and the piping hole H3 of the housing 11 illustrated in Fig. 6 are the same hole.

[0048] 7 and 8 illustrate smoke detection devices 1 each having a housing 11 that can hold a smoke detection unit 13, which has an intake section 132 and an exhaust section 133 on each of opposing sides of the housing, in different orientations rotated 180 degrees around an axis perpendicular to the plane of the page, similar to the smoke detection device 1 illustrated in Figures 1 and 2. However, the position of the intake section 132 of the smoke detection unit 13 shown in Figure 7 is different from the position of the intake section 132 of the smoke detection unit 13 shown in Figures 1 and 2. Furthermore, the position of the exhaust section 133 of the smoke detection unit 13 shown in Figure 8 is different from the position of the exhaust section 133 of the smoke detection unit 13 shown in Figures 1 and 2.

[0049] 7 and 8, the intake section 132 and the exhaust section 133 are positioned symmetrically with respect to a point, with the center of the main body of the smoke detection unit 13 as the center of symmetry. However, the smoke detection device 1 illustrated in Fig. 7 is different in that the intake section 132 and the exhaust section 133 are positioned at different positions in the left-right direction, whereas the smoke detection device 1 illustrated in Fig. 8 is different in that the intake section 132 and the exhaust section 133 are positioned at the same position in the left-right direction, i.e., at the center position in the left-right direction.

[0050] The housing 11 shown in Fig. 7 or 8 has, on its upper surface, a piping hole H1 through which the intake pipe 7 can pass when the smoke detection unit 13 is held in the orientation shown in Fig. 7(A) or 8(A), and has, on its lower surface, a piping hole H2 through which the exhaust pipe 8 can pass when the smoke detection unit 13 is held in the orientation shown in Fig. 7(A) or 8(A). The piping hole H1 also serves as a piping hole H4 through which the exhaust pipe 8 can pass when the smoke detection unit 13 is held in the orientation shown in Fig. 7(B) or 8(B), and the piping hole H2 also serves as a piping hole H3 through which the intake pipe 7 can pass when the smoke detection unit 13 is held in the orientation shown in Fig. 7(B) or 8(B). In other words, the piping holes H1 and H4 of the housing 11 illustrated in Figs. 7 and 8 are the same hole, and the piping holes H2 and H3 are the same hole.

[0051] 9 illustrates a smoke detection device 1 including a housing 11 that can hold a smoke detection unit 13 having an intake section 132 and an exhaust section 133 on each of adjacent sides of the housing in different orientations rotated 90 degrees around an axis perpendicular to the paper surface, similar to the smoke detection device 1 illustrated in FIG. 3. However, the housing 11 shown in FIG. 9 can be held in a different orientation in which the front and back surfaces of the smoke detection unit 13 are reversed. In other words, the face (back surface) of the smoke detection unit 13 that is not visible in FIG. 9(A) is the face (front surface) of the smoke detection unit 13 that is visible in FIG. 9(B).

[0052] The housing 11 shown in Fig. 9 has a piping hole H1 on its upper surface, through which the intake pipe 7 can pass when the smoke detection unit 13 is held in the orientation shown in Fig. 9(A), and a piping hole H2 on its right surface, through which the exhaust pipe 8 can pass when the smoke detection unit 13 is held in the orientation shown in Fig. 9(A). The housing 11 shown in Fig. 9 also has a piping hole H3 on its lower surface, through which the intake pipe 7 can pass when the smoke detection unit 13 is held in the orientation shown in Fig. 9(B). The piping hole H2 also serves as a piping hole H4, through which the exhaust pipe 8 can pass when the smoke detection unit 13 is held in the orientation shown in Fig. 9(B). In other words, the piping hole H2 and the piping hole H4 of the housing 11 illustrated in Fig. 9 are the same hole.

[0053] (Variation 4) In the above-described embodiment, the piping holes H1 and H3 are used as holes that allow the intake pipe 7 to pass through. Alternatively, the piping holes H1 and H3 may be used as holes that allow the intake section 132 to pass through.

[0054] In the above-described embodiment, the piping holes H2 and H4 are used as holes that allow the exhaust pipe 8 to pass through. Alternatively, the piping holes H2 and H4 may be used as holes that allow the exhaust section 133 to pass through.

[0055] Fig. 10 is a diagram illustrating a smoke detection device 1 according to this modification. The intake section 132 shown in Fig. 10 is longer than the intake section 132 shown in Fig. 1 and Fig. 2, and when the smoke detection unit 13 is attached to the housing 11, it passes through the piping hole H1 or the piping hole H3 and protrudes to the outside of the housing 11. Furthermore, the exhaust section 133 shown in Fig. 10 is longer than the exhaust section 133 shown in Fig. 1 and Fig. 2, and when the smoke detection unit 13 is attached to the housing 11, it passes through the piping hole H2 or the piping hole H4 and protrudes to the outside of the housing 11.

[0056] (Variation 5) Depending on the orientation in which the smoke detection unit 13 is held in the housing 11, the power supply unit 94 and the smoke detection unit 13 may be connected by different power transmission cables.

[0057] Fig. 11 is a diagram illustrating a smoke detection device 1 according to this modification. The smoke detection device 1 shown in Fig. 11 selectively includes either a power transmission cable 17 that is detachable from each of the power supply unit 14 and the smoke detection unit 13, or a power transmission cable 18 that is detachable from each of the power supply unit 14 and the smoke detection unit 13.

[0058] Power transmission cable 17 is a power transmission cable that connects power supply unit 14 and smoke detection unit 13 when smoke detection unit 13 is held in housing 11 in the arrangement orientation shown in Fig. 11(A). Power transmission cable 18 is a power transmission cable that connects power supply unit 14 and smoke detection unit 13 when smoke detection unit 13 is held in housing 11 in the arrangement orientation shown in Fig. 11(B). In the example of Fig. 11, power transmission cable 18 is longer than power transmission cable 17.

[0059] (Variation 6) Depending on the orientation in which the smoke detection unit 13 is held in the housing 11, the data processing unit 15 and the smoke detection unit 13 may be connected by different communication cables.

[0060] Fig. 12 is a diagram illustrating a smoke detection device 1 according to this modification. The smoke detection device 1 shown in Fig. 12 selectively includes either a communication cable 19 that is detachable from each of the data processing unit 15 and the smoke detection unit 13, or a communication cable 10 that is detachable from each of the data processing unit 15 and the smoke detection unit 13.

[0061] The communication cable 19 is a communication cable that connects the data processing unit 15 and the smoke detection unit 13 when the smoke detection unit 13 is held in the housing 11 in the arrangement orientation shown in Fig. 12(A). The communication cable 10 is a communication cable that connects the data processing unit 15 and the smoke detection unit 13 when the smoke detection unit 13 is held in the housing 11 in the arrangement orientation shown in Fig. 12(B). In the example of Fig. 12, the communication cable 10 is longer than the communication cable 19.

[0062] The power transmission cable and communication cable included in the smoke detection device 1 may be integrated into a composite cable such as a flat flexible cable. For example, the power transmission cable 17 according to the fifth modification and the communication cable 19 according to the sixth modification may be configured as a single flat flexible cable, and the power transmission cable 18 according to the fifth modification and the communication cable 10 according to the sixth modification may be configured as a single flat flexible cable. [Explanation of symbols]

[0063] 1...smoke detection device, 7...intake pipe, 8...exhaust pipe, 9...smoke detection device, 11...housing, 12...display unit, 13...smoke detection unit, 14...power supply unit, 15...data processing unit, 16...cap, 17...power transmission cable, 18...power transmission cable, 19...communication cable, 10...communication cable, 91...housing, 92...display unit, 93...smoke detection unit, 94...power supply unit, 95...data processing unit, 111...lid, 131...sensor, 132...intake section, 133...exhaust section, 911...lid, 931...sensor, 932...intake section, 933...exhaust section.

Claims

1. a smoke detection unit having a sensor for detecting smoke in the air, an intake section connected to an intake pipe that forms a flow path of air from a space to be monitored toward a space accommodating the sensor, and an exhaust section connected to an exhaust pipe that forms a flow path of air from the space accommodating the sensor toward a space to which the air is exhausted; a housing that can selectively hold the smoke detection unit in either a first arrangement orientation or a second arrangement orientation and can accommodate the smoke detection unit therein with a lid attached; Equipped with The housing has a first piping hole through which the intake section or the intake pipe can pass when the smoke detection unit is held in the first arrangement orientation, a second piping hole through which the exhaust section or the exhaust pipe can pass when the smoke detection unit is held in the first arrangement orientation, a third piping hole through which the intake section or the intake pipe can pass when the smoke detection unit is held in the second arrangement orientation, and a fourth piping hole through which the exhaust section or the exhaust pipe can pass when the smoke detection unit is held in the second arrangement orientation. Smoke detection device.

2. Two of the first piping hole, the second piping hole, the third piping hole, and the fourth piping hole are the same hole.

10. The smoke detection device of claim 1.

3. a power supply unit housed in the housing and supplying power to the smoke detection unit; a first power transmission cable that is detachable from each of the power supply unit and the smoke detection unit, and that connects the power supply unit and the smoke detection unit when the smoke detection unit is held in the housing in the first arrangement orientation; a second power transmission cable that is detachable from each of the power supply unit and the smoke detection unit, and that connects the power supply unit and the smoke detection unit when the smoke detection unit is held in the housing in the second arrangement orientation; and The smoke detection device of claim 1 .

4. a data processing unit housed in the housing and configured to process data generated by the smoke detection unit; a first communication cable that is detachable from each of the data processing unit and the smoke detection unit, and that connects the data processing unit and the smoke detection unit when the smoke detection unit is held in the housing in the first arrangement orientation; a second communication cable that is detachable from each of the data processing unit and the smoke detection unit, and that connects the data processing unit and the smoke detection unit when the smoke detection unit is held in the housing in the second arrangement orientation; and 4. A smoke detection device according to claim 1, comprising:

Images