Detection device and electronic device

Abstract

In a detection device provided with a plurality of sensors, erroneous operation of the sensors is prevented and miniaturization is achieved. A detection device (110) is provided with: a housing (130) having an inflow port (131) and an outflow port (132); a plate-shaped member (140) disposed inside the housing, having a first vent hole (141) and a second vent hole (142); a first sensor (S1) disposed at a position on a surface of the plate-shaped member that is closer to the inflow port than the first vent hole; and a second sensor (S2) disposed on a back surface of the plate-shaped member between the first vent hole and the second vent hole.

Description

Technical Field

[0001] This invention relates to detection devices and electronic devices. Background Technology

[0002] A particle detection sensor for detecting PM2.5 and other particles has been developed. Japanese Patent Application Publication No. 2019-215315 discloses a gas detection device comprising a gas detection module and a particulate particle detection module.

[0003] Japanese Patent Application Publication No. 2017-181153 discloses a particle detection sensor that suppresses air turbulence in the detection area.

[0004] In the case of manufacturing a multi-sensor unit that includes a particle detection sensor, a gas sensor (such as a VOC sensor), and a temperature and humidity sensor, in order to obtain information on the gas concentration, temperature, and humidity contained in the air outside the detection device, it is necessary to install the gas sensor and the temperature and humidity sensor in the air flow path where the particle detection sensor is the object of detection. Summary of the Invention

[0005] However, since the airflow within the detection device contains aerosols such as PM2.5 and dust, dust can accumulate on the surfaces of the sensors, leading to malfunctions. Furthermore, if sensors (especially temperature and humidity sensors) are positioned within the airflow path, their distance from the light-emitting element of the particle detection sensor increases, causing them to be affected by the heat generated by that element, resulting in malfunctions.

[0006] One objective of this invention is to prevent sensor malfunctions and achieve miniaturization in a detection device equipped with multiple sensors.

[0007] To address the aforementioned issues, one aspect of the detection device of the present invention comprises: a housing having an intake port and an exhaust port; a plate-shaped member disposed within the housing and having a first vent and a second vent; a first sensor disposed on the surface of the plate-shaped member and disposed closer to the intake port than the first vent; and a second sensor disposed on the back surface of the plate-shaped member and disposed between the first vent and the second vent.

[0008] Beneficial effects

[0009] According to one aspect of the present invention, in a detection device equipped with multiple sensors, sensor malfunctions can be prevented and miniaturization can be achieved. Attached Figure Description

[0010] Figure 1 This is an exploded perspective view of the detection device according to the first embodiment of the present invention.

[0011] Figure 2 This is an explanatory diagram of the inner cover according to the first embodiment of the present invention.

[0012] Figure 3 This is an explanatory diagram of the plate-shaped component according to the first embodiment of the present invention.

[0013] Figure 4 for Figure 2 The cross-sectional view of line A-A' in the diagram.

[0014] Figure 5 for Figure 2 The cross-sectional view of line B-B' in the diagram.

[0015] Figure 6 for Figure 2 The cross-sectional view of the C-C' line in the diagram.

[0016] Figure 7 This is an explanatory diagram of the plate-shaped component according to the second embodiment of the present invention.

[0017] Figure 8 This is an explanatory diagram of the plate-shaped component according to the second embodiment of the present invention.

[0018] Figure 9 This is an exploded perspective view of the detection device according to the third embodiment of the present invention.

[0019] Figure 10 This is the third embodiment of the present invention. Figure 4 The corresponding cross-sectional view of line A-A'.

[0020] Figure 11 This is the third embodiment of the present invention. Figure 5 The corresponding cross-sectional view of line B-B'.

[0021] Figure 12 This is the third embodiment of the present invention. Figure 6 The corresponding C-C' line cross-section diagram.

[0022] Figure 13 This is a diagram illustrating an embodiment of the vent hole according to the fourth embodiment of the present invention.

[0023] Figure 14 This is a diagram illustrating an embodiment of the vent hole according to the fourth embodiment of the present invention.

[0024] Figure 15 This is a diagram illustrating an embodiment of the vent hole according to the fourth embodiment of the present invention.

[0025] Figure 16 This is a diagram showing the partition of the inner cover according to the fifth embodiment of the present invention. Detailed Implementation

[0026] [First Implementation]

[0027] The first embodiment of the present invention will be described in detail below. Unless otherwise specified, the long side direction of the detection device will be referred to as the X direction, the short side direction as the Y direction, and the vertical direction as the Z direction.

[0028] Figure 1 This is an exploded perspective view of the detection device 110 of this embodiment.

[0029] The detection device 110 is a multi-sensor device for detecting the properties of a gas. Examples of electronic devices equipped with the detection device 110 include air purifiers and air conditioners.

[0030] like Figure 1 As shown, the detection device 110 includes a housing consisting of a cover 120, an inner cover 130, and a back cover 160, a plate-shaped component 140, an airflow generating mechanism 150, a first sensor S1, and a second sensor S2 (see reference). Figure 3 ) and the third sensor S3 (refer to Figure 3 ).

[0031] The cover 120 is a cover located on the side of the surface, having an inlet (inlet) 121 and an outlet (exhaust) 122. The inlet 121 and outlet 122 are located on the back side opposite to the plate-shaped member 140. The inlet 121 is the port for drawing gas located outside the detection device 110 into the interior. The outlet 122 is the port for expelling gas located inside the detection device 110 to the outside, and has a shape corresponding to the exhaust port of the airflow generating mechanism 150.

[0032] The inner cover 130 is a cover located between the cover 120 and the back cover 160, covering the plate-shaped component 140, the first sensor S1, and the airflow generating mechanism 150. The inner cover 130 has an inlet (intake port) 131 and an outlet (exhaust port) 132. The inlet 131 and outlet 132 are positioned at positions corresponding to the inlet 121 and outlet 122 of the cover 120, and are located on the back side opposite to the plate-shaped component 140. The inlet 131 is the port for drawing gas located outside the detection device 110 into the interior, and the outlet 132 is the port for expelling gas located inside the detection device 110 outward, and has a shape corresponding to the shape of the airflow generating mechanism 150.

[0033] The plate-shaped component 140 is a platform on which the first sensor S1, etc., is mounted. The plate-shaped component 140 may also be a substrate. The substrate is a printed circuit board, on which conductive wiring is applied on or inside a board formed of an insulator. The first sensor S1 is disposed on the surface of the plate-shaped component 140 on the side closer to the inlet 131 than the first vent 141.

[0034] exist Figure 1In this design, the airflow generating mechanism 150 is separated from other components for convenience, but is integrated with the inner casing 130, generating airflow from the inlet 131 towards the outlet 132 within the casing. Thus, the airflow generating mechanism 150 causes air inside the casing to be discharged outside the casing through the outlet 132. The airflow generating mechanism 150 includes a fan, a temperature regulator, and a pressure regulator. Furthermore, the airflow generating mechanism 150 does not necessarily need to be built into the casing; it can also be externally mounted.

[0035] The back cover 160 is a cover located below the detection device 110. For example... Figure 1 As shown, the inner cover 130 and the back cover 160, which are integrated with the airflow generating mechanism 150, are covered by the plate-shaped member 140 and the first sensor S1. In detail, the plate-shaped member 140 is supported by screws 170 disposed within the back cover 160, and the inner cover 130, which is integrated with the airflow generating mechanism 150, covers the plate-shaped member 140.

[0036] A first vent 141 and a second vent 142 are provided on the plate-shaped component 140. Details will be described later.

[0037] Figure 2 This is an explanatory diagram of the inner cover 130 of this embodiment, and... Figure 1 Compared to flipping vertically. For example... Figure 2 As shown, the first flow path FP1 is a flow path from the inlet 131 through the first sensor S1 and through the airflow generating mechanism 150 to discharge air to the outside. The first sensor S1 is disposed near the inlet 131.

[0038] Figure 3 This is an explanatory diagram of the back side of the plate-shaped member 140 in this embodiment. (See diagram below.) Figure 3 As shown, the first vent 141, which is generally rectangular, is arranged with its major axis positioned along the Y direction on the upper central side. The second vent 142, which is also generally rectangular, is arranged with its major axis positioned along the X direction on the left central side. The first vent 141 and the second vent 142 are disposed between the first sensor S1 and the outlet 132, specifically, in the first flow path FP1 (see reference). Figure 2 The first sensor S1 is located downstream of the airflow generating mechanism 150 and upstream of the airflow generating mechanism 150. The second vent 142 is located below the airflow generating mechanism 150.

[0039] In addition, Figure 3 The first vent 141 and the second vent 142 are both represented in a roughly rectangular shape, but they can also be roughly elliptical, and can be set appropriately.

[0040] The first vent 141 is located near the first sensor S1. The second vent 142 is located near the airflow generating mechanism 150. Thus, air entering the lower side of the plate-shaped member 140 from the first vent 141 is drawn into the airflow generating mechanism 150 on the upper side of the plate-shaped member 140 by the suction force of the airflow generating mechanism 150, and discharged from the outlet 122 to the outside of the detection device 110. The second flow path FP2 is a flow path from the first vent 141 to the second vent 142, flowing on the lower side of the plate-shaped member 140.

[0041] The detection device 110 also includes a second sensor S2 and a third sensor S3.

[0042] The second sensor S2 is disposed on the back side of the plate-shaped member 140, opposite to the side where the first sensor S1 is disposed. Furthermore, the second sensor S2 is disposed downstream of the first vent 141 of the second flow path FP2 (between the first vent 141 and the second vent 142).

[0043] The third sensor S3 is disposed on the back side of the plate-shaped member 140, opposite to the side where the first sensor S1 is disposed, and is positioned adjacent to the second vent 142. The second vent 142 is located near the third sensor S3. Figure 3 In the middle, the third sensor S3 is located on the upstream side of the second vent 142 of the second flow path FP2.

[0044] According to the above, the second sensor S2 and the third sensor S3 are disposed on the same surface of the plate-shaped component 140 and are positioned between the first vent 141 and the second vent 142.

[0045] The first sensor S1 is the first sensor to come into contact with the air inside the housing, located at the uppermost position among the three sensors, and detects particles such as dust and PM2.5. The second sensor S2 and the third sensor S3 can be gas sensors (O2, O3, CO, CO2, NOx, etc.), VOC sensors (volatile organic compound sensors), temperature sensors, humidity sensors, temperature and humidity sensors, air pressure sensors, wind speed sensors, etc. Furthermore, the configuration can include both the second sensor S2 and the third sensor S3, or only one of them. In either case, as long as the first sensor S1, the second sensor S2, and the third sensor S3 are different sensors, they can be appropriately configured.

[0046] In addition, in this embodiment, the second sensor S2 and the third sensor S3 are disposed on the same surface, but it is also possible for the first sensor S1 and the third sensor S3 to be disposed on the same surface while only the second sensor S2 is disposed on a different surface. It can be set appropriately.

[0047] Figure 4 yes Figure 2 The cross-sectional view of line A-A' in the diagram. Figure 5 yes Figure 2 The cross-sectional view of line B-B' in the diagram. Figure 6 yes Figure 2 The cross-sectional view of the C-C' line in the diagram.

[0048] like Figures 4 to 6 As shown, from inlet 131 (refer to) Figure 1 The air entering the inner cover 130 passes through a first flow path FP1 flowing on the surface of the plate member 140 and a second flow path FP2 flowing under the back of the plate member 140, and is released to the outside from the outlet 132 by the airflow generating mechanism 150.

[0049] The inner cover 130 has a partition 133 between the outlet 132 and the first sensor S1, the partition 133 having a third vent (vent) 190.

[0050] The first flow path FP1 is a flow path that allows air passing through the first sensor S1 to flow between the surfaces of the inner cover 130 and the plate-shaped component 140, through the third vent (vent) 190 formed on the partition 133 into the airflow generating mechanism 150, and through the airflow generating mechanism 150 to discharge the air from the outlet 132 to the outside of the detection device 110.

[0051] The second flow path FP2 flows through a portion of the air from the first vent 141 into the back side of the plate-shaped component 140 via the first flow path FP1, and then through the second vent 142 to the flow path before merging with the air from the first flow path FP1.

[0052] The third vent (air port) 190 can be larger than the first vent 141 and the second vent 142. In other words, the first vent 141 and the second vent 142 can be smaller than the third vent (air port) 190. This allows for adjustment of the airflow rate. Specifically, when the first vent 141 and the second vent 142 are smaller than the third vent (air port) 190, fluid resistance increases, and the flow rate in the second flow path FP2 is slower than that in the first flow path FP1.

[0053] [Effects of the first embodiment]

[0054] (1) Based on the above, measurements based on the second sensor S2 and the third sensor S3 can be performed without reducing the measurement performance of the first sensor S1, and the response performance can be improved. In the detection device 110, the air flow path is divided into a first flow path FP1 and a second flow path FP2, and the flow rate of the second flow path FP2 is suppressed. As a result, dust accumulation on the surfaces of the second sensor S2 and the third sensor S3 is suppressed, and malfunctions of the second sensor S2 and the third sensor S3 caused by dust accumulation on their surfaces are suppressed.

[0055] In detail, by making the diameters of the first vent 141 and the second vent 142 smaller than the size of the third vent (air port) 190 of the first flow path FP1, the flow rate of the second flow path FP2 is slowed down, thus suppressing dust from entering the second flow path FP2. Furthermore, since the second vent 142 serves as an exhaust port, its size can be made as large as possible to prevent backflow and dust intrusion.

[0056] (2) When the plate-shaped component 140 is a substrate, by setting the back side of the plate-shaped component 140 as the mounting surface for the circuit elements of the substrate, the second sensor S2 and the third sensor S3 can be easily mounted. In the plate-shaped component 140, the substrate becomes a single-sided mount, thus reducing substrate cost and processing expenses, resulting in a reduction in product cost. This is the effect of forming the second flow path FP2 using the substrate on the back side of the plate-shaped component 140.

[0057] (3) A first vent 141 is provided between the heat-generating element (especially the light-emitting element of the first sensor S1) and the second sensor S2 and the third sensor S3, thereby cutting off the heat (heat conduction) transmitted from the heat-generating element through the substrate. Therefore, it is possible to suppress malfunctions caused by the influence of the heat-generating element (heat) on the second sensor S2 and the third sensor S3.

[0058] (4) A branch is formed in the flow path of the first sensor S1, and a second sensor S2 and a third sensor S3 are set on the branch. Therefore, the inlet 131, the outlet 132 and the airflow generation mechanism 150 can be common, and the product size can be reduced and the cost reduced.

[0059] [Second Implementation]

[0060] The second embodiment of the present invention will be described below. Furthermore, for ease of explanation, components having the same functions as those described in the first embodiment will be labeled with the same reference numerals, and their descriptions will not be repeated.

[0061] Figure 7This is an explanatory diagram of the plate-shaped component 240 included in the detection device 210 of this embodiment. Figure 7 The back side of the plate-shaped component 240 is shown. On the back side of the plate-shaped component 240, multiple second vent holes 242a are provided around the third sensor S3. (See diagram below.) Figure 7 As shown, the second vent 242a is composed of, for example, three vents 242a1, 242a2, and 242a3. Vent 242a1 is disposed on the Y-direction side of the third sensor S3. Vent 242a2 is disposed on the side opposite to the X-direction of the third sensor S3. Vent 242a3 is disposed on the side opposite to the Y-direction of the third sensor S3. That is, the three vents 242a1, 242a2, and 242a3 are arranged in a U-shape around the third sensor S3.

[0062] In addition, regarding the case where there are three vent holes provided on the plate-shaped component 240, besides... Figure 7 Besides the neatly arranged U-shapes shown, it can also be a roughly U-shaped one (i.e., Figure 7 The positions of at least one of the three vents 242a1, 242a2 and 242a3 are staggered, and the orientation of at least one vent can be set differently, etc.

[0063] Figure 8 This is an explanatory diagram of another example of the plate-shaped component 240 included in the detection device 210 of this embodiment. Figure 8 The back side of the plate-shaped component 240 is shown. (As shown) Figure 8 As shown, on the back side of the plate-shaped component 240, the second vent 242b is formed, for example, by two vents 242b1 and 242b2. Vent 242b1 is arranged in an L-shape along the X direction on the left central side. Vent 242b2 is arranged in an inverted L-shape along the X direction on the left central side. That is, the two vents 242b1 and 242b2 are arranged in a U-shape around the third sensor S3.

[0064] In addition, regarding the case where there are two vent holes provided on the plate-shaped component 240, besides Figure 8 Besides the L-shaped and inverted L-shaped forms shown, it can also be a roughly L-shaped form (i.e., from...). Figure 7 The three vents 242a1, 242a2, and 242a3 (excluding one vent) can also be arranged in a shape that is parallel to each other.

[0065] [Effects of the Second Implementation]

[0066] (1) As described above, due to the presence of the second vent holes 242a and 242b, heat conduction from the heating element transmitted through the plate-shaped component 240 can be cut off or suppressed, thus suppressing the malfunction and characteristic variation (drift) of the second sensor S2 caused by the effect of heating.

[0067] (2) The second sensor S2 and the third sensor S3 are not the same sensor; they are envisioned as sensors with completely different purposes. For example, the second sensor S2 is a gas sensor, and the third sensor S3 is a temperature and humidity sensor. The temperature and humidity sensor is sensitive to changes in the ambient temperature. Therefore, as... Figure 7 As shown, by providing three slits as second vents 242a on the plate-shaped component 240, it is less susceptible to heat from other components or sensors. Furthermore, as... Figure 8 As shown, two slits are provided in the plate-shaped component 240 as the second vent 242b, thereby making it less susceptible to heat from other components and sensors.

[0068] (3) Herein lies the shared use of the slit and the vent. That is, by using the slit as a vent, it is not necessary to re-install the slit for heat dissipation.

[0069] [Third Implementation Method]

[0070] The third embodiment of the present invention will be described below. Furthermore, for ease of explanation, components having the same functions as those described in the first and second embodiments will not be described again using the same reference numerals.

[0071] Figure 9 This is an exploded perspective view of the detection device 310 of this embodiment. Figure 9 As shown, the detection device 310 has a first plate-shaped component 340a and a second plate-shaped component 340b stacked inside the housing. The first plate-shaped component 340a is a platform that mounts the airflow generating mechanism 350, the first sensor S1, etc. The first plate-shaped component 340a has a first vent 341a and a second vent 342a. The second plate-shaped component 340b is disposed on the back side of the first plate-shaped component 340a. The second plate-shaped component 340b has a first vent 341b and a second vent 342b. The second plate-shaped component 340b is supported by screws 370 disposed inside the back cover 360.

[0072] Figure 10 This is the implementation method and Figure 4 The corresponding cross-sectional view of line A-A'. Figure 11 This is the implementation method and Figure 5 The corresponding cross-sectional view of line B-B'. Figure 12 This is the implementation method and Figure 6The corresponding C-C' line cross-section diagram.

[0073] like Figures 10 to 12 As shown, the first plate-shaped component 340a and the second plate-shaped component 340b are configured to contact each other. Air flowing into the inner cover 330 from the inlets 321 and 331 is divided into a first flow path FP1 flowing over the first plate-shaped component 340a and a second flow path FP2 flowing through the first vents 341a and 341b on the back side of the second plate-shaped component 340b. Air flowing through the first flow path FP1 and the second flow path FP2 is released from the outlet 332 by the detection device 310 via the airflow generation mechanism 350. Similar to the first embodiment, the inner cover 330 has a partition 333 between the outlet 332 and the first sensor S1, the partition 333 having a third vent (air port) 390, through which the first flow path FP1 is the air path.

[0074] The second sensor S2 is disposed on the opposite side of the surface of the second plate-shaped member 340b to the surface opposite to the first plate-shaped member 340a, and is disposed between the first vent 341b and the second vent 342b.

[0075] [Effects of the Third Implementation]

[0076] When the second plate-shaped member 340b is used as a substrate, the first plate-shaped member 340a and the second plate-shaped member 340b are configured to contact each other, so the first plate-shaped member 340a covers the second plate-shaped member 340b, which serves as the substrate. Therefore, dust accumulation on the surface of the second plate-shaped member 340b can be prevented. Furthermore, since the first plate-shaped member 340a covers the second plate-shaped member 340b, maintenance of the second plate-shaped member 340b, which serves as the substrate, becomes easier.

[0077] Furthermore, multiple plate-shaped components can be stacked, not just two plate-shaped components as described above, but also three or more plate-shaped components. In this case, it is possible to prevent dust accumulation on the plate-shaped components on all layers except the top layer, that is, on the plate-shaped components on the layers below the second layer from the top, making maintenance easier.

[0078] [Fourth Implementation Method]

[0079] The fourth embodiment of the present invention will be described below. Furthermore, for ease of explanation, components having the same functions as those described in the first to third embodiments will not be repeated. In this embodiment, a modified example of the vent hole will be described.

[0080] Figure 13 Example 1 shows the vent hole of this embodiment. (As shown) Figure 13As shown, the vent 501 in Embodiment 1 consists of a single hole. The vent 501 is a representative example of a vent.

[0081] Figure 14 This is a diagram illustrating Embodiment 2, showing the vent hole of this embodiment. (See diagram for example.) Figure 14 As shown, the vent 502 in Embodiment 2 is composed of a plurality of micropores 5021. The vent 502 is a representative example of a vent. Moreover, at least one of the first vents 141, 341a, 341b and the third vents 190, 390 may also have the same configuration as the vent 502.

[0082] Figure 15 This diagram illustrates Embodiment 3, showing the vent hole of this embodiment. (See diagram for example.) Figure 15 As shown, the vent 503 of Embodiment 3 has a filter 5031. The vent 503 is a representative example of a vent. Moreover, at least one of the first vents 141, 341a, 341b and the third vents 190, 390 may have the same configuration as the vent 503.

[0083] Alternatively, Examples 1, 2, and 3 can be used in combination, or they can be used individually.

[0084] According to Examples 2 and 3, the passage of dust can be suppressed.

[0085] [Fifth Implementation Method]

[0086] The fifth embodiment of the present invention will now be described. Furthermore, for ease of explanation, components having the same function as those described in the first to fourth embodiments will be labeled with the same reference numerals and their descriptions will not be repeated. In this embodiment, a modified example of the partition plate 433 of the inner cover 430 will be described.

[0087] Figure 16 This is a diagram showing the partition plate 433 of the inner cover 430 of the detection device 410 in this embodiment. (See diagram for reference.) Figure 16 As shown, the third vent (air vent) 490 of the partition plate 433 of the inner cover 430 is closer to the center of the partition plate 433 compared to the first to third embodiments. The airflow generating mechanism (not shown) is disposed on the side of the plate member 440, but achieves the same effect. The third vent (air vent) 490 can be located either on the side of the plate member 440 of the partition plate 433 or near the center of the partition plate 433.

[0088] 〔Summarize〕

[0089] The detection device of Embodiment 1 of the present invention includes: a housing having an air intake and an air exhaust; a plate-shaped component disposed within the housing and having a first vent and a second vent; a first sensor disposed on the surface of the plate-shaped component and disposed closer to the air intake than the first vent; and a second sensor disposed on the back surface of the plate-shaped component and disposed between the first vent and the second vent.

[0090] Based on the above configuration, gas can be measured using the second sensor without compromising the measurement performance of the first sensor, and the response performance can be improved. Furthermore, since the air intake and exhaust ports supplying air to both sensors can be shared, product size can be reduced and costs lowered.

[0091] Based on the above-described method 1, the detection device of method 2 of the present invention can also be configured such that the housing further has a partition between the exhaust port and the first sensor, the partition having a third vent hole, the third vent hole being larger than the first vent hole and the second vent hole.

[0092] Based on the above configuration, the gas flow rate can be adjusted. That is, by making the third vent hole larger than the first and second vent holes, the fluid resistance of the first and second vent holes, which are smaller than the third vent hole, increases, thereby preventing dust from entering the second sensor.

[0093] Based on the above-described method 1 or 2, the detection device of method 3 of the present invention can also be configured such that the housing further includes an airflow generating mechanism, the airflow generating mechanism causing air inside the housing to be discharged from the exhaust port to the outside of the housing, and the second vent is located on the lower side of the airflow generating mechanism.

[0094] Based on the above configuration, exhaust can be carried out efficiently based on the airflow generation mechanism.

[0095] Based on any one of the above methods 1 to 3, the detection device of method 4 of the present invention can also be configured such that the plate-shaped component has multiple layers.

[0096] Based on the above configuration, since multiple plate-shaped components are stacked, it is possible to prevent dust accumulation on the plate-shaped components in the layers other than the top layer (the second layer from the top and below), making maintenance easy.

[0097] Based on the above-described method 4, the detection device of method 5 of the present invention can also be configured such that the detection device further includes a third sensor, which is disposed on the same surface as the second sensor, and the second vent is disposed near the third sensor.

[0098] Based on the above configuration, since the second vent is located near the third sensor, gas measurement by the third sensor can be reliably performed.

[0099] Based on the above-described method 5, the detection device of method 6 of the present invention can also be configured such that a plurality of second vent holes are provided around the third sensor.

[0100] Based on the above configuration, since multiple second vents are arranged around the third sensor, gas measurement can be reliably performed by the third sensor.

[0101] Based on the above-described method 5, the detection device of method 7 of the present invention can also be configured such that at least one of the first vent and the third vent is formed by a plurality of micropores.

[0102] Based on the above structure, it is possible to suppress the passage of dust.

[0103] In the above-described method 2, the detection device of method 8 of the present invention may also be configured such that at least one of the first vent and the third vent further comprises a filter.

[0104] Based on the above structure, it is possible to further suppress the passage of dust.

[0105] The electronic device of embodiment 9 of the present invention includes any one of the detection devices of embodiments 1 to 8 described above.

[0106] This invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included within the technical scope of this invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

Claims

1. A detection device, characterized in that, It possesses: The housing has an air intake and an air exhaust port; A plate-shaped component is disposed within the housing and has a first vent and a second vent. A first sensor is disposed on the surface of the plate-shaped component and is located closer to the air inlet than the first vent hole. as well as The second sensor is disposed on the back of the plate-shaped component and between the first vent and the second vent. A first flow path for a first airflow is formed along the surface of the plate-shaped member, and a second flow path for a second airflow is formed along the back surface of the plate-shaped member. The second flow path branches off from the first flow path via the first vent hole and merges with the first flow path via the second vent hole.

2. The detection device according to claim 1, characterized in that, The housing also has a partition between the exhaust port and the first sensor, and the partition has a third vent. The third vent is larger than the first vent and the second vent.

3. The detection device according to claim 1 or 2, characterized in that, The housing also includes an airflow generating mechanism that causes air inside the housing to be discharged from the exhaust port to the outside of the housing. The second vent is located on the lower side of the airflow generating mechanism.

4. The detection device according to claim 1 or 2, characterized in that, The plate-shaped component has multiple layers.

5. The detection device according to claim 1 or 2, characterized in that, The detection device also includes a third sensor, which is disposed on the same surface as the second sensor. The second vent is located near the third sensor.

6. The detection device according to claim 5, characterized in that, A plurality of second vent holes are provided around the third sensor.

7. The detection device according to claim 2, characterized in that, At least one of the first vent and the third vent is formed by a plurality of micropores.

8. The detection device according to claim 2, characterized in that, At least one of the first vent and the third vent also includes a filter.

9. An electronic device, characterized in that: It includes the detection device according to any one of claims 1 to 8.

Images