JP7346198B2 - sensor device - Google Patents

Description

The present invention relates to a technology for a sensor device including a housing formed in a substantially box shape.

2. Description of the Related Art Conventionally, the technology of a sensor device including a housing formed in a substantially box shape has been known. For example, as described in Patent Document 1.

The sensor device described in Patent Document 1 includes a housing formed in a substantially box shape and a temperature/humidity sensor provided inside the housing. Ventilation holes are formed in the left and right side walls of the housing, respectively. With this configuration, the temperature and humidity sensor inside the housing can easily measure the temperature outside the housing by air (airflow) flowing from the left and right ventilation holes to the other left and right ventilation holes.

Here, the flow of air is not limited to the left-right direction; for example, air flowing upward (updraft) may occur in response to a rise in temperature or the like. In the sensor device, in order to take in rising airflow into the housing, it is desirable to form ventilation holes not only in the left and right side walls but also in the bottom.

However, the upward airflow taken into the housing through the ventilation holes at the bottom tends to flow irregularly within the housing, and for example, it is assumed that it may flow out from the left and right ventilation holes without touching the temperature/humidity sensor. In such a case, there is a problem in that it becomes difficult to measure the temperature outside the housing using a temperature/humidity sensor inside the housing.

Japanese Patent Application Publication No. 2017-156275

The present invention has been made in view of the above circumstances, and an object to be solved is to provide a sensor device that can easily measure the temperature outside the housing using a temperature sensor.

The problem to be solved by the present invention is as described above, and next, means for solving this problem will be explained.

That is, in claim 1, a casing formed in a substantially box shape, a first vent that penetrates the bottom of the casing inwardly and externally, and a first vent that penetrates the left and right side walls of the casing inwardly and outwardly, a second vent that communicates with the first vent inside the casing, a temperature sensor provided inside the casing, and a temperature sensor that is provided inside the casing and communicates with the first vent left and right air passage forming members forming an air passage between the sensor and the left and right air passage forming members, the lower ends of the left and right air passage forming members and the bottom being connected directly or through a predetermined member. It is something that

According to a second aspect of the present invention, there is provided a housing formed in a substantially box shape, a first ventilation hole penetrating the bottom of the housing inside and outside, and a first ventilation hole penetrating the left and right side walls of the housing inside and outside; a second vent communicating with the first vent inside the body; a temperature sensor provided inside the casing; and a second vent communicating with the first vent and the temperature sensor provided inside the casing. left and right ventilation passage forming members forming a ventilation passage between the left and right ventilation passage forming members, the left and right ventilation passage forming members being connected to the second ventilation hole through a predetermined gap between them and the left and right side walls. The second ventilation holes are provided to face each other, and the upper end portions of the second ventilation holes are formed at a higher position than the upper end portions of the left and right ventilation path forming members.

According to a third aspect of the present invention, a casing formed in a substantially box shape, a first ventilation hole penetrating the bottom of the casing inwardly and externally, and a first ventilation hole penetrating the left and right side walls of the casing inwardly and outwardly; a second vent communicating with the first vent inside the body; a temperature sensor provided inside the casing; and a second vent communicating with the first vent and the temperature sensor provided inside the casing. left and right ventilation path forming members forming a ventilation path between them, and the second ventilation port is formed by an aggregate of a plurality of slit-like holes, and the second ventilation port is formed by an aggregate of a plurality of slit-shaped holes, and It is formed from the top to the bottom .

According to a fourth aspect of the present invention, upper end portions of the left and right ventilation path forming members are formed at a higher position than at least a lower end portion of the temperature sensor .

In a fifth aspect of the present invention, a recessed portion recessed upward is formed on the lower surface of the bottom portion, and the first vent hole is formed in the recessed portion.

The present invention has the following effects.

In the first aspect, the temperature outside the housing can be easily measured by the temperature sensor. Furthermore, it is possible to make it easier for the temperature sensor to touch the air that has entered the housing.

In the second aspect, the temperature outside the housing can be easily measured by the temperature sensor. Further, the temperature inside the housing can be made to easily adjust to the temperature outside the housing.

In claim 3, the temperature outside the housing can be easily measured by the temperature sensor. Furthermore, the temperature inside the housing can be made to easily adjust to the temperature outside the housing.

According to the fourth aspect of the present invention, it is possible to make it easier for the temperature sensor to touch the air that has entered the housing.

In claim 5 , air outside the housing can be made easier to flow into the first vent.

FIG. 2 is a perspective view showing a sensor device. FIG. 3 is an exploded perspective view showing the sensor unit. (a) A front view showing a housing, a substrate, and a ventilation path forming member. (b) Similarly, a rear view. FIG. 3 is a perspective view showing the housing. (a) Similarly, a bottom view. (b) A1-A1 sectional view. FIG. 7 is an enlarged rear sectional view showing a recessed portion. FIG. 3 is a rear sectional view showing the flow of air flowing into the housing. FIG. 3 is a side cross-sectional view showing airflow reaching a recess. Graphs related to experimental results of the sensor device according to the present embodiment. FIG. 3 is a rear cross-sectional view of a casing for comparison.

In the following description, the up-down direction, left-right direction, and front-back direction are respectively defined according to the arrows shown in the figures.

Below, a sensor device 1 according to an embodiment of the present invention will be described using FIGS. 1 to 6.

The sensor device 1 is capable of measuring the internal environment (specifically, temperature) of a building. The sensor device 1 can measure the indoor temperature by measuring the temperature of the air introduced into the housing 20. A sensor device 1 shown in FIG. 1 is installed on a wall A inside a building. The sensor device 1 is arranged above the outlet section B installed on the wall A. The sensor device 1 includes a sensor unit 10 and a power supply unit 70.

The sensor unit 10 has a sensor (temperature sensor 51 shown in FIG. 3(b)) that can measure temperature. The sensor unit 10 is provided so as to be exposed from the wall A. The sensor unit 10 can measure indoor temperature by being supplied with power from a power supply unit 70, which will be described later. The sensor device 1 includes a housing 20, a lid 40, a substrate 50, and a ventilation path forming member 60, as shown in FIGS. 2 and 3.

The housing 20 is a part forming the outer shell of the sensor device 1 . The housing 20 has a plurality of walls and is formed into a substantially box shape with an open rear part. The housing 20 includes a bottom part 21 located at the lower part, a left wall part 22 located at the left part, a right wall part 23 located at the right part, and a front wall part 24 located at the front part. and a top portion 25 located at the top. The housing 20 accommodates a board 50 that will be described later. As shown in FIGS. 4 and 5, the housing 20 includes a lid mounting portion 31, a board mounting portion 32, a recess 33, a first vent 34, and a second vent 35.

The lid mounting portion 31 is for attaching a lid 40, which will be described later. The lid mounting portion 31 is formed at the corner portions (the upper left end, the upper right end, the lower left end, and the lower right end) of the casing 20 . The lid mounting portion 31 is formed into a substantially fan shape when viewed from the rear. The lid mounting portion 31 is formed with a hole having a substantially circular shape in rear view and having a female screw portion formed on the inner circumferential surface.

The board mounting portion 32 is for mounting a board 50, which will be described later. The board mounting portion 32 is formed in a substantially cylindrical shape and protrudes rearward from the front wall portion 24 . The board mounting portion 32 is formed with a hole portion having a generally circular shape in rear view and having a female screw portion formed on the inner circumferential surface. Two board mounting parts 32 (total four) are formed at the left end and right end of the front wall part 24 at intervals vertically.

The recessed portion 33 shown in FIGS. 5 and 6 is a portion of the bottom portion 21 that is recessed upward. The recess 33 is formed into a substantially rectangular shape when viewed from the bottom with the longitudinal direction facing the left-right direction. The recess 33 is formed on the lower surface of the bottom 21 . The width of the recess 33 in the left-right direction is larger than the width of the substrate 50 in the left-right direction (see FIG. 7). Further, the vertical width of the recess 33 is formed to be smaller than the vertical width of a first vent hole 34, which will be described later.

The first ventilation port 34 shown in FIGS. 4 to 6 is a hole for providing ventilation between the inside and outside of the casing 20. The first vent hole 34 is formed to vertically penetrate the bottom portion 21 . The first ventilation port 34 is constituted by a plurality of (13 in this embodiment) slits formed at left and right intervals. The slit is formed in a substantially rectangular shape when viewed from the bottom with the longitudinal direction facing the front-rear direction. The first vent hole 34 is formed in the recess 33 . Further, the first vent hole 34 is formed from the left part to the right part of the recessed part 33. In this way, the first ventilation port 34 is formed by an aggregate of a plurality of slits (slit-like holes), and is formed so as to extend from the left part to the right part of the bottom part 21 as a whole.

The second ventilation port 35 shown in FIGS. 4 and 5 is a hole for providing ventilation between the inside and outside of the housing 20. The second ventilation port 35 is formed to pass through the left wall portion 22 and the right wall portion 23 from side to side. The second ventilation port 35 is configured by a plurality of (16 in this embodiment) slits that are vertically spaced apart from each other. The slit has a generally rectangular shape in side view with its longitudinal direction facing the front-rear direction. The second ventilation hole 35 is formed from the upper part to the lower part of the left wall part 22 and the right wall part 23. In this way, the second ventilation port 35 is formed by an aggregate of a plurality of slits (slit-shaped holes), and is formed so as to extend from the upper part to the lower part of the left wall part 22 and the right wall part 23 as a whole.

The lid 40 shown in FIGS. 1 and 2 is for closing the housing 20. The lid body 40 is formed into a substantially plate shape with the plate surface facing forward and backward. The lid body 40 has substantially the same width in the vertical direction and width in the horizontal direction as the width in the vertical direction and the width in the horizontal direction of the housing 20 . The lid body 40 includes a through hole 41 that penetrates the plate surface back and forth. The through holes 41 are formed at the corners of the lid 40 (upper left end, upper right end, lower left end, and lower right end).

The lid body 40 configured in this manner is brought into contact with the housing 20 from the rear, and a fastening member (not shown) such as a screw is inserted into the through hole 41 from the rear. The lid 40 is fixed to the housing 20 by fastening the fastening member to the lid mounting portion 31.

The substrate 50 shown in FIGS. 2 and 3 is arranged with its surface facing forward and backward. A temperature sensor 51 and the like are mounted on the substrate 50.

The temperature sensor 51 is for measuring the temperature inside the housing 20. The temperature sensor 51 can measure the temperature of the air that comes into contact with itself. The temperature sensor 51 is constituted by, for example, a resistance temperature detector that utilizes the characteristic that the electrical resistance of metal changes according to changes in temperature. The temperature sensor 51 is provided at the upper left end of the rear surface of the substrate 50.

The board 50 configured in this manner is fixed to the casing 20 by being screwed to the board mounting portion 32 (see FIG. 5(b)) of the casing 20. Thereby, the board 50 is housed in the housing 20. Further, the temperature sensor 51 is disposed in the upper and lower middle portions of the housing 20 and in the left and right middle portions. Further, the temperature sensor 51 is arranged above the first vent 34 and on the left and right inner side of the second vent 35 (see FIG. 7).

The ventilation path forming member 60 is for forming a ventilation path S3 between the first ventilation port 34 and the temperature sensor 51. As shown in FIGS. 4 and 5, a pair of left and right ventilation path forming members 60 are provided in the housing 20, and are formed to have substantially the same shape. The air passage forming member 60 is formed to extend upward from the left end and right end (lid attachment portion 31) of the bottom portion 21. The air passage forming member 60 is formed into a substantially plate shape with the plate surface facing in the left-right direction. Further, the air passage forming member 60 is formed into a substantially rectangular shape when viewed from the back, with the longitudinal direction facing in the up-down direction. The upper end portion of the air passage forming member 60 is located at approximately the same height as the vertical center portion of the housing 20 . The air passage forming member 60 is formed integrally with the housing 20. Thereby, the air passage forming member 60 is connected to the bottom part 21 and the front wall part 24, and is provided with no gap between the bottom part 21 and the front wall part 24. Hereinafter, the left side air passage forming member 60 will be referred to as the "left side forming member 60L", and the right side air passage forming member 60 will be referred to as the "right side forming member 60R".

The left side forming member 60L is disposed on the left side (laterally outward) of the recess 33 and the first vent 34. Further, the left side forming member 60L is disposed with a gap on the right side (left and right inner side) with respect to the left wall portion 22. The left side forming member 60L is arranged to face the lower part of the second vent 35 of the left wall portion 22.

The right side forming member 60R is disposed on the right side of the recess 33 and the first vent 34. Further, the right side forming member 60R is arranged with a gap leftward with respect to the right wall portion 23. The right side forming member 60R is provided so as to face the lower part of the second vent hole 35 of the right wall portion 23.

The upper end of the air passage forming member 60 configured in this way is formed at a position higher than the lower end of the temperature sensor 51 and lower than the upper end of the substrate 50, as shown in FIG. 3(b). Ru.

The rear end of the air passage forming member 60 is brought into contact with the lid 40 (see FIG. 8). Further, as described above, the ventilation passage forming member 60 is provided without any gap between the bottom portion 21 and the front wall portion 24. Thereby, the air passage forming member 60 divides the lower space within the housing 20 into a left side space S1, a right side space S2, and an air passage S3.

The left side space S1 shown in FIG. 5(b) is a space between the left side forming member 60L and the left wall portion 22. The right side space S2 is a space between the right side forming member 60R and the right wall portion 23. The left side space S1 and the right side space S2 communicate with the lower part of the second vent 35. The left side space S1 and the right side space S2 are open at the top and communicate with the space above the housing 20 (the space above the air passage forming member 60).

The ventilation path S3 is a space between the left side forming member 60L and the right side forming member 60R. The ventilation path S3 communicates with the first ventilation port 34. Further, the ventilation path S3 is communicated with the second ventilation port 35 via the space above the housing 20. Further, the ventilation passage S3 is also communicated with the left side space S1 and the right side space S2 via the space above the housing 20. A substrate 50 is arranged within the ventilation path S3 (see FIG. 3).

The power supply unit 70 shown in FIG. 1 is fixed to the wall A, and the sensor unit 10 is detachably attached thereto. The power supply unit 70 is capable of supplying power supplied from a predetermined power supply source such as a grid power source to the sensor unit 10.

In the sensor device 1 configured as described above, when the air flowing into the housing 20 from the first vent 34 and the second vent 35 comes into contact with the temperature sensor 51, the temperature of the air is measured by the temperature sensor 51. can do. Thereby, the sensor device 1 can measure the indoor temperature. Further, the sensor unit 10 can transmit the temperature measurement result to an external device using a predetermined communication section. Furthermore, by covering the substrate 50 with the housing 20, the sensor unit 10 can suppress dust and the like from adhering to the substrate 50 and the temperature sensor 51, thereby suppressing the occurrence of problems.

Next, the flow of air flowing into the housing 20 will be described using FIGS. 7 and 8. In addition, below, the case where the indoor temperature rises is mentioned as an example, and is demonstrated.

When the indoor temperature rises, air flows upward (updraft). Since the first vent hole 34 is formed in the bottom portion 21 of the casing 20, the first vent hole 34 can take in (introduce into the interior) an ascending air current.

The air thus taken in is guided upward by the ventilation path S3. When the air rises to a position higher than the ventilation path S3 (ventilation path forming member 60), the air diffuses outward to the left and right and flows out of the casing 20 from the second ventilation port 35 (up and down in FIG. 7). (see arrow shown in the center).

In this manner, in this embodiment, the air that has flowed into the housing 20 is raised to a certain height by the air passage S3, and then is allowed to flow out of the housing 20. According to such a configuration, it is possible to suppress the air that has flowed into the housing 20 from spreading left and right until it passes through the ventilation path S3, and to make it easier for the air to reach the temperature sensor 51. . This allows the temperature sensor 51 to easily measure the indoor temperature.

Further, in this embodiment, the first ventilation port 34 is formed in the recess 33. According to such a configuration, the side walls of the recess 33 can prevent the air that has reached the bottom 21 (recess 33) from flowing in the horizontal direction. Thereby, indoor air can be made easier to flow into the first ventilation port 34.

Further, by arranging the left and right ventilation passage forming members 60 with a gap between them and the second ventilation port 35, the left and right ventilation passage forming members 60 can be brought close to each other and the width of the ventilation passage S3 in the left and right direction can be narrowed. I can do it. Thereby, the air passing through the ventilation path S3 can be made to easily come into contact with the temperature sensor 51.

Further, the first vent port 34 and the second vent port 35 are formed along the longitudinal direction of the left wall portion 22, right wall portion 23, and bottom portion 21 of the housing 20 (that is, over a relatively wide range). . Therefore, the air inside the casing 20 easily flows out of the casing 20 through the first vent 34 and the second vent 35. Moreover, air outside the housing 20 easily flows into the interior of the housing 20 via the first vent 34 and the second vent 35. In this way, the configuration of the first vent port 34 and the second vent port 35 allows the air inside the casing 20 to easily replace the air outside the casing 20. Thereby, for example, it is difficult for heat to build up inside the housing 20, and the temperature inside the housing 20 can be easily adjusted to (easily brought closer to) the temperature outside the housing 20. Furthermore, in the present embodiment, by arranging the left and right ventilation passage forming members 60 with a gap between them relative to the second ventilation port 35, they can be disposed not only in the upper part of the second ventilation port 35 but also in the lower part of the second ventilation port 35. However, the housing 20 is configured to allow air to flow between the inside and the outside. That is, the second ventilation port 35 is formed over a relatively wide area despite the presence of the ventilation path forming member 60. This allows air to circulate over a wide range through the second vent 35, making it easier for the temperature inside the casing 20 to adjust to (easily approach) the temperature outside the casing 20.

Below, experimental results of the sensor device 1 will be explained using FIGS. 9 and 10.

In the experiment, an air conditioner installed indoors performed heating operation to raise the indoor temperature, and the indoor temperature was measured using the sensor device 1 according to the present embodiment (the graph of "this embodiment" indicated by the thick line in FIG. 9) reference).

In addition, in the experiment, as a comparison target for the sensor device 1 according to the present embodiment, the indoor temperature was measured by the sensor device according to the comparison target shown in FIG. ). The sensor device according to the comparison target differs from the sensor device 1 according to the present embodiment in that the housing 90 is not provided with the ventilation path forming member 60 and the recess 33.

Further, the "indoor temperature" graph shown by a solid line in FIG. 9 is the actual indoor temperature. As is clear from FIG. 9, the measurement result of the sensor device 1 according to this embodiment was closer to the indoor temperature than that of the sensor device 1 according to the comparison target. Furthermore, in the experiment, the indoor temperature significantly increased from time S2 to time S6. In the sensor device 1 according to the present embodiment, the temperature (measurement result) increased quickly in response to such a rise in indoor temperature, compared to the sensor device according to the comparison target.

From the above experimental results, it has become clear that the air passage forming member 60 and the recess 33 can make it easier for indoor air to reach the temperature sensor 51.

As described above, the sensor device 1 according to the present embodiment includes a casing 20 formed in a substantially box shape, a first ventilation hole 34 penetrating the bottom 21 of the casing 20 from inside to outside, and A second vent hole 35 that penetrates the left wall portion 22 and the right wall portion 23 (left and right side wall portions) inside and out and communicates with the first vent hole 34 inside the housing 20; a temperature sensor 51 provided inside; left and right ventilation path forming members 60 provided inside the housing 20 and forming a ventilation path S3 between the first ventilation port 34 and the temperature sensor 51; It is equipped with the following.

With this configuration, it is possible to suppress the air that has entered the housing 20 from diffusing before reaching the temperature sensor 51, and to make it easier for the air to come into contact with the temperature sensor 51. According to this, the temperature outside the housing 20 can be easily measured by the temperature sensor 51.

Further, the lower end portions of the left and right air passage forming members 60 and the bottom portion 21 are connected directly or via a predetermined member.

With this configuration, it is possible to prevent air from diffusing from between the lower end portions of the left and right ventilation path forming members 60 and the bottom portion 21 to the left and right outer sides of the ventilation path S3. Thereby, it is possible to effectively suppress the air that has entered the housing 20 from diffusing before reaching the temperature sensor 51. This allows the air that has entered the housing 20 to be more easily touched by the temperature sensor 51.

Further, the upper end portions of the left and right air passage forming members 60 are formed at a higher position than at least the lower end portion of the temperature sensor 51.

With this configuration, the air that has entered the housing 20 can be guided to a position higher than the lower end of the temperature sensor 51. Thereby, it is possible to effectively suppress the air that has entered the housing 20 from diffusing before reaching the temperature sensor 51. This allows the air that has entered the housing 20 to be more easily touched by the temperature sensor 51.

Further, the left and right ventilation path forming members 60 are provided so as to face the second ventilation port 35 with a predetermined gap interposed between the left wall portion 22 and the right wall portion 23.

With this configuration, the temperature inside the casing 20 can be made to easily adjust to the temperature outside the casing 20.

Further, the upper end portion of the second ventilation port 35 is formed at a higher position than the upper end portions of the left and right ventilation path forming members 60.

With this configuration, the upper end of the second vent 35 can be formed at a relatively high position. Here, as described above, the second ventilation port 35 is provided so as to face the ventilation path forming member 60 from side to side. That is, the lower end of the second vent 35 is formed at a relatively low position (at least below the upper end of the air passage forming member 60). In this way, the second ventilation port 35 can be formed to extend from a lower position to a higher position than the ventilation path forming member 60 (widely vertically). According to this, air can more easily circulate inside and outside the housing 20. Therefore, the temperature inside the housing 20 can be made to easily adjust to the temperature outside the housing 20. Furthermore, it is possible to make it easier for the air flowing through the ventilation path S3 to flow into the second ventilation port 35, and in turn, it is possible to make it easier to take air into the housing 20 from the first ventilation port 34.

Further, a recess 33 recessed upward is formed on the lower surface of the bottom portion 21, and the first vent hole 34 is formed in the recess 33.

With this configuration, it is possible to make it easier for air outside the housing 20 to flow into the first ventilation port 34.

Further, the second vent hole 35 is formed by an aggregate of a plurality of slit-shaped holes, and is formed so as to extend from the upper part to the lower part of the left wall part 22 and the right wall part 23 as a whole. be.

With this configuration, the second ventilation port 35 can be formed almost entirely in the left wall portion 22 and the right wall portion 23. In this way, the temperature inside the housing 20 can be more easily adapted to the temperature outside the housing 20. Further, since it is not necessary to make one hole forming the second ventilation port 35 so large, it is possible to suppress dust and the like from entering into the housing 20.

Note that the left wall portion 22 and the right wall portion 23 according to the present embodiment are one embodiment of the left and right side wall portions according to the present invention.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above configuration, and various changes can be made within the scope of the invention described in the claims.

For example, although the sensor device 1 was used to measure indoor temperature, the use of the sensor device 1 is not limited to this, and may also measure outdoor temperature.

Further, although the sensor device 1 is provided with only the temperature sensor 51, the present invention is not limited to this. (or an acceleration sensor capable of measuring shaking) may also be provided. This allows the sensor device 1 to acquire a plurality of pieces of information, thereby improving convenience.

Further, although the ventilation path forming member 60 is formed integrally with the housing 20, the present invention is not limited to this, and may be formed separately from the housing 20. In such a configuration, the air passage forming member 60 may be fixed, for example, by separately fitting a plate-like member between the housing 20 and the lid 40.

Further, although the air passage forming member 60 is formed in a substantially plate shape, the shape of the air passage forming member 60 is not limited to this, and may be any shape. Further, the ventilation path forming members 60 do not necessarily have to be formed in substantially the same shape, and may have different shapes.

Furthermore, although the upper end of the air passage forming member 60 is formed at a higher position than the lower end of the temperature sensor 51, the present invention is not limited thereto. It may be formed in the position. Note that the upper end of the air passage forming member 60 is desirably formed at a somewhat high position from the viewpoint of allowing the air flowing in from the first air vent 34 to reach the temperature sensor 51. Specifically, the upper end of the air passage forming member 60 is desirably located at a higher position than the lower end of the temperature sensor 51, and more preferably at a position that is the same as or higher than the upper end of the substrate 50.

Furthermore, although the first ventilation port 34 is constituted by a plurality of slits, it is not limited to this, and may be constituted by one slit. Further, although the second vent hole 35 is constituted by a plurality of slits, it is not limited to this, and may be constituted by one slit. Furthermore, the first ventilation port 34 and the second ventilation port 35 do not necessarily need to be formed by slits (elongated holes), and may be formed by other holes (for example, approximately circular holes, etc.). .

Furthermore, although the second ventilation port 35 is formed to extend from a position higher than the ventilation path forming member 60 to a position lower than the ventilation path forming member 60, the second ventilation port 35 is not limited thereto. The second ventilation port 35 may be formed only at a position lower than the air passage forming member 60, or may be formed only at a position higher than the air passage forming member 60, for example.

Further, although the recess 33 is formed to have a substantially rectangular shape when viewed from the bottom, the shape of the recess 33 is not limited to this, and may be any shape (for example, approximately elliptical when viewed from the bottom). I can do it.

Further, although the housing 20 (bottom portion 21) is provided with the recess 33, the present invention is not limited to this, and, for example, the case 20 (bottom portion 21) may not include the recess 33.

1 Sensor device 20 Housing 21 Bottom 22 Left wall (side wall)
23 Right wall part (side wall part)
34 First ventilation port 35 Second ventilation port 51 Temperature sensor 60 Airflow path forming member S3 Airflow path

Claims (5)

A casing formed in a substantially box shape,
a first vent that penetrates the bottom of the housing inward and outward;
a second vent that penetrates the left and right side walls of the casing in and out and communicates with the first vent inside the casing;
a temperature sensor provided inside the housing;
left and right ventilation path forming members provided inside the housing and forming a ventilation path between the first ventilation port and the temperature sensor;
Equipped with
The lower ends of the left and right ventilation path forming members and the bottom are connected directly or via a predetermined member;
sensor device. A casing formed in a substantially box shape,
a first vent that penetrates the bottom of the housing inward and outward;
a second vent that penetrates the left and right side walls of the casing inwardly and outwardly and communicates with the first vent inside the casing;
a temperature sensor provided inside the housing;
left and right ventilation path forming members provided inside the housing and forming a ventilation path between the first ventilation port and the temperature sensor;
Equipped with
The left and right ventilation path forming members are provided to face the second ventilation port with a predetermined gap between them and the left and right side wall portions,
The upper end of the second vent is formed at a higher position than the upper end of the left and right ventilation path forming members.
sensor device. A casing formed in a substantially box shape,
a first vent that penetrates the bottom of the housing inward and outward;
a second vent that penetrates the left and right side walls of the casing in and out and communicates with the first vent inside the casing;
a temperature sensor provided inside the housing;
left and right ventilation path forming members provided inside the housing and forming a ventilation path between the first ventilation port and the temperature sensor;
Equipped with
The second vent hole is formed by an aggregate of a plurality of slit-shaped holes, and is formed to extend from the top to the bottom of the left and right side walls as a whole.
sensor device. The upper end portions of the left and right air passage forming members are formed at a higher position than at least the lower end portion of the temperature sensor.
The sensor device according to any one of claims 1 to 3. A concave portion recessed upward is formed on the lower surface of the bottom portion,
the first vent is formed in the recess;
The sensor device according to any one of claims 1 to 4 .

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