Patent Description:
Sensor devices including a substrate and a temperature sensor mounted on the substrate are known (see, for example, PTLs <NUM> and <NUM>).

When a sensor device is installed on an installation surface to detect the ambient temperature around the sensor device by using a temperature sensor, if the temperature sensor receives thermal effect of the installation surface, the ability of the temperature sensor to follow a change in the ambient temperature may be impaired. The ambient temperature is the temperature of air around the sensor device. For example, the ambient temperature corresponds to the room temperature when the sensor device is installed indoors, and corresponds to the outside temperature when the sensor device is installed outdoors.

An object of one aspect of the technology disclosed in the present application is to provide a sensor device in which the ability of a temperature sensor to follow a change in the ambient temperature is high.

A sensor device according to an aspect of the technology disclosed in the present application, which is a sensor device to be installed on an installation surface, includes a substrate and a temperature sensor as described in claim <NUM>. The substrate includes a substrate body that is disposed along the installation surface and an extension portion that extends from the substrate body in a direction away from the installation surface. The temperature sensor is mounted on the extension portion and detects an ambient temperature around the sensor device.

With the technology disclosed in the present application, it is possible to provide a sensor device in which the ability of a temperature sensor to follow a change in the ambient temperature is high.

First, a first example of the technology disclosed in the present application will be described.

A sensor device <NUM> illustrated in <FIG> detects the ambient temperature around the sensor device <NUM> in a state in which the sensor device <NUM> is installed on an installation surface <NUM>. The sensor device <NUM> is driven by an internal battery or an external power supply, and periodically transmits detection data wirelessly or by wire. The sensor device <NUM> may be installed either outdoors or indoors. The ambient temperature is the temperature of air around the sensor device <NUM>. For example, the ambient temperature corresponds to the room temperature when the sensor device <NUM> is installed indoors, and corresponds to the outside temperature when the sensor device is installed outdoors. The sensor device <NUM> includes a substrate unit <NUM>, a cover <NUM>, and a spacer <NUM>.

The substrate unit <NUM> includes a substrate <NUM>, a temperature sensor <NUM>, and a plurality of heat generating modules <NUM> (see <FIG> as appropriate). The substrate <NUM> is, for example, a flexible substrate. The substrate <NUM> includes a substrate body <NUM> and an extension portion <NUM>. The substrate body <NUM> has a quadrangular flat shape in plan view, and is disposed along the installation surface <NUM>.

A surface on one side in the thickness direction of the substrate body <NUM> is a mounting surface 26A, and a surface on the other side in the thickness direction of the substrate body <NUM> is an affixing surface 26B. The thickness direction of the substrate body <NUM> is the same as the direction normal to the mounting surface 26A and the affixing surface 26B of the substrate body <NUM>. The plurality of heat generating modules <NUM> and other components (not shown) are mounted on the mounting surface 26A. A conductive pattern (not shown) is formed on the substrate <NUM>. The plurality of heat generating modules <NUM>, the temperature sensor <NUM> (described below), and the like are electrically connected via the conductive pattern. The affixing surface 26B is directly affixed to the installation surface <NUM> by using, for example, a double-sided tape.

The extension portion <NUM> extends from the substrate body <NUM> in a direction away from the installation surface <NUM>. That is, the extension portion <NUM> extends from the substrate body <NUM> toward one side in the thickness direction of the substrate body <NUM> (in the direction of arrow A). The extension portion <NUM> includes a standing portion <NUM> that stands with respect to the substrate body <NUM>, and a bent portion <NUM> that is bent from an upper end of the standing portion <NUM> toward the substrate body <NUM> side (in the direction of arrow B). The bent portion <NUM> forms a distal end portion of the extension portion <NUM> and faces the substrate body <NUM> in the thickness direction of the substrate body <NUM>. The bent portion <NUM> has an upper surface 32A facing toward a side opposite from the substrate body <NUM> in a side view of the substrate <NUM>, and a lower surface 32B facing toward the substrate body <NUM> side.

The temperature sensor <NUM> is, for example, a chip sensor, and is mounted on the lower surface 32B of the bent portion <NUM>. The temperature sensor <NUM> detects the ambient temperature around the sensor device <NUM>, and outputs a signal in accordance with the ambient temperature. The temperature sensor <NUM> is not in direct contact with any members other than the extension portion <NUM>, and is in a state of floating in a space inside the cover <NUM> described below (a space between the cover <NUM> and the installation surface <NUM>). To the temperature sensor <NUM>, air outside the sensor device <NUM> is supplied through an opening (not shown) formed in the cover <NUM>, an opening (not shown) formed between a top wall <NUM> of the cover <NUM> and the installation surface <NUM>, and the like.

As illustrated in <FIG>, the extension portion <NUM> extends from a part of a peripheral portion of the substrate body <NUM>. To be specific, the substrate body <NUM> includes a plurality of side portions 34A to 34D that form the peripheral portion of the substrate body <NUM>. The extension portion <NUM> extends from a part, in the longitudinal direction (the direction of the arrow L), of one side portion 34A among the plurality of side portions 34A to 34D. The extension portion <NUM> is located at a central part of the side portion 34A in the longitudinal direction.

The bent portion <NUM>, which is the distal end portion of the extension portion <NUM>, is located at a position that does not overlap the plurality of heat generating modules <NUM> in plan view of the substrate <NUM>. Thus, the temperature sensor <NUM> is disposed at a position deviated from the plurality of heat generating modules <NUM> in plan view of the substrate <NUM>. That is, the temperature sensor <NUM> is disposed at a position that does not overlap the plurality of heat generating modules <NUM> in plan view of the substrate <NUM>.

As illustrated in <FIG>, the cover <NUM> covers the substrate unit <NUM>. The cover <NUM> includes the top wall <NUM> having substantially the same shape and size as the substrate body <NUM>. The top wall <NUM> faces the substrate body <NUM> in the thickness direction of the substrate body <NUM>. The extension portion <NUM> has elasticity, the standing portion <NUM> is in an elastically bent state (a compressed state) between the top wall <NUM> and the substrate body <NUM>, and thereby the bent portion <NUM> is in contact with the top wall <NUM> in a pressed state. The spacer <NUM> includes a plurality of support portions <NUM> disposed between the top wall <NUM> and the substrate body <NUM>.

The substrate unit <NUM> is formed as follows. That is, as illustrated in <FIG>, the substrate <NUM>, having a flat shape and including the substrate body <NUM> and the extension portion <NUM>, is formed; and the temperature sensor <NUM> and the plurality of heat generating modules <NUM> are mounted on the substrate <NUM>. Then, the extension portion <NUM> is bent along a first bending line L1 between the substrate body <NUM> and the standing portion <NUM> and along a second bending line L2 between the standing portion <NUM> and the bent portion <NUM>. Thus, the substrate unit <NUM> is formed.

Next, functions and advantageous effects of the first example will be described.

First, a comparative example will be described in order to clarify the functions and advantageous effects of the first example. <FIG> illustrates a sensor device <NUM> according to the comparative example. The sensor device <NUM> according to the comparative example differs from the sensor device <NUM> according to the first example in that the extension portion <NUM> (see <FIG>) is omitted from the substrate <NUM>. The temperature sensor <NUM> is mounted on the substrate <NUM> having a flat shape and disposed along the installation surface <NUM>.

<FIG> is a graph representing the ability of the temperature sensor <NUM> to follow a change in the ambient temperature, regarding the sensor device <NUM> according to the comparative example. In <FIG>, a graph G1 represents the ambient temperature, a graph G2' represents the temperature detected by the temperature sensor <NUM>, and a graph G3 represents the temperature of the installation surface <NUM>.

As illustrated in <FIG>, in the sensor device <NUM> according to the comparative example, the temperature sensor <NUM> receives thermal effect of the installation surface <NUM>, and therefore the ability of the temperature sensor <NUM> to follow a change in the ambient temperature is impaired. That is, in the sensor device <NUM> according to the comparative example, the temperature detected by the temperature sensor <NUM> increases in accordance with increase of the temperature of the installation surface <NUM>, and the difference between the ambient temperature and the temperature detected by the temperature sensor <NUM> increases even when the ambient temperature increases.

In contrast, in the sensor device <NUM> according to the first example illustrated in <FIG>, the extension portion <NUM> extends from the substrate body <NUM> in a direction away from the installation surface <NUM>, and the temperature sensor <NUM> is mounted on the extension portion <NUM>. Accordingly, it is possible to reduce thermal effect that the temperature sensor <NUM> receives from the installation surface <NUM> by the amount due to separation of the temperature sensor <NUM> from the installation surface <NUM>. Thus, it is possible to improve the ability of the temperature sensor <NUM> to follow a change in the ambient temperature.

<FIG> is a graph representing the ability of the temperature sensor <NUM> to follow a change in the ambient temperature, regarding the sensor device <NUM> according to the first example. In <FIG>, a graph G1 represents the ambient temperature, a graph G2 represents the temperature detected by the temperature sensor <NUM>, and a graph G3 represents the temperature of the installation surface <NUM>. For reference, a graph G2' represents the temperature detected by the temperature sensor <NUM> in the sensor device <NUM> according to the comparative example.

As illustrated in <FIG>, in the sensor device <NUM> according to the first example, it is possible to reduce thermal effect that the temperature sensor <NUM> receives from the installation surface <NUM>, and therefore the ability of the temperature sensor <NUM> to follow a change in the ambient temperature is high. That is, in the sensor device <NUM> according to the first example, the difference between the temperature of the installation surface <NUM> and the temperature detected by the temperature sensor <NUM> increases as the ambient temperature increases, and the temperature detected by the temperature sensor <NUM> increases in accordance with increase of the ambient temperature.

In the sensor device <NUM> according to the first example, the temperature detected by the temperature sensor <NUM> is closer to the ambient temperature than in the sensor device <NUM> according to the comparative example. Thus, with the sensor device <NUM> according to the first example, it is possible to improve the ability of the temperature sensor <NUM> to follow a change in the ambient temperature.

With the sensor device <NUM> according to the first example, the following functions and advantageous effects are further achieved. That is, with the sensor device <NUM> according to the first example, the temperature sensor <NUM> is mounted on the bent portion <NUM>, which is the distal end portion of the extension portion <NUM>. Accordingly, the distance between the temperature sensor <NUM> and the installation surface <NUM> can be increased by the amount due to mounting of the temperature sensor <NUM> on the distal end portion of the extension portion <NUM>, and thus it is possible to further reduce thermal effect that the temperature sensor <NUM> receives from the installation surface <NUM>.

The temperature sensor <NUM> is mounted on the lower surface 32B of the bent portion <NUM>. Accordingly, it is possible to effectively use the space between the bent portion <NUM> and the substrate body <NUM> for disposing the temperature sensor <NUM> while reliably providing a large distance between the temperature sensor <NUM> and the installation surface <NUM>. Thus, it is possible to achieve both the ability of the temperature sensor <NUM> to follow a change in the ambient temperature and reduction in size of the sensor device <NUM> in the height direction.

The bent portion <NUM> is bent from the upper end of the standing portion <NUM> toward the substrate body <NUM> side (in the direction of arrow B), and faces the substrate body <NUM>. Accordingly, it is possible to suppress protrusion of the bent portion <NUM> in a lateral direction of the substrate body <NUM> (in the direction opposite to the arrow B). Thus, it is possible to reduce the size of the sensor device <NUM> in the direction along the installation surface <NUM>.

The temperature sensor <NUM> is disposed at a position deviated from the heat generating module <NUM> in plan view of the substrate <NUM>. Accordingly, it is possible to reduce thermal effect that the temperature sensor <NUM> receives from, in addition to the installation surface <NUM>, the plurality of heat generating modules <NUM>. Thus, it possible to further improve the ability of the temperature sensor <NUM> to follow a change in the ambient temperature.

The extension portion <NUM> has elasticity, the standing portion <NUM> is in an elastically bent state (compressed state) between the top wall <NUM> and the substrate body <NUM>, and thereby the bent portion <NUM> is in contact with the top wall <NUM> of the cover <NUM> in a pressed state. Accordingly, the temperature sensor <NUM> can be held in a state of being separated from the installation surface <NUM>, and thus it is possible to maintain the ability of the temperature sensor <NUM> to follow a change in the ambient temperature.

Next, modifications of the first example will be described.

In the first example, the substrate body <NUM> is directly affixed to the installation surface <NUM>. However, a bottom wall that is to be affixed to the installation surface <NUM> may be formed in the cover <NUM>, and the substrate body <NUM> may be disposed along the installation surface <NUM> with the bottom wall therebetween. The substrate body <NUM> may be fixed to the installation surface <NUM> by using a method other than affixing.

In the first example, the temperature sensor <NUM> outputs a signal in accordance with the ambient temperature. However, the temperature sensor <NUM> may output a signal in accordance with the ambient temperature and the ambient humidity. The sensor device <NUM> may periodically transmit the detected temperature data and the detected humidity data wirelessly or by wire.

In the first example, the substrate <NUM> is a flexible substrate. However, the substrate <NUM> may be a substrate other than a flexible substrate.

In the first example, the temperature sensor <NUM> is disposed at a position deviated from the plurality of heat generating modules <NUM> in plan view of the substrate <NUM>. However, the temperature sensor <NUM> may be disposed at a position overlapping the plurality of heat generating modules <NUM> in plan view of the substrate <NUM>.

In the first example, the sensor device <NUM> is installed on the installation surface <NUM> extending in the horizontal direction. However, the sensor device <NUM> may be installed on an installation surface <NUM> extending in a direction inclined with respect to the horizontal direction, or may be installed on an installation surface <NUM> extending in the vertical direction.

[First Embodiment] Next, a first embodiment of the technology disclosed in the present application will be described.

In the first embodiment illustrated in <FIG>, the configuration of the sensor device <NUM> is changed from that of the first example as follows. That is, as illustrated in <FIG>, a pair of slits <NUM> are formed in the substrate <NUM>. The pair of slits <NUM> extend from a central part, in the longitudinal direction, of the side portion 34A toward the side portion 34B opposite to the side portion 34A. The extension portion <NUM> is formed by a cut-and-raised piece between the pair of slits <NUM>.

The extension portion <NUM> includes the standing portion <NUM> that stands with respect to the substrate body <NUM> and the bent portion <NUM> that is bent with respect to the standing portion <NUM>. The bent portion <NUM> overlaps a cut-out portion <NUM>, which is formed in the substrate <NUM> by the cut-and-raised piece, in plan view of the substrate <NUM>. As illustrated in <FIG>, the bent portion <NUM> has the upper surface 32A facing toward a side opposite from the substrate body <NUM> in a side view of the substrate <NUM> and the lower surface 32B facing toward the substrate body <NUM> side. The temperature sensor <NUM> is mounted on the upper surface 32A of the bent portion <NUM>, and a heat insulator <NUM> having a block shape is attached to the lower surface 32B of the bent portion <NUM>.

In the first embodiment, the substrate unit <NUM> is formed as follows. That is, as illustrated in <FIG>, the substrate <NUM>, having a flat shape and having the pair of slits <NUM>, is formed; and the temperature sensor <NUM> and the plurality of heat generating modules <NUM> are mounted on the substrate <NUM>. Then, the extension portion <NUM> is bent along a first bending line L1 between the substrate body <NUM> and the standing portion <NUM> and along a second bending line L2 between the standing portion <NUM> and the bent portion <NUM>. Thus, the substrate unit <NUM> is formed.

Also with the second embodiment, as illustrated in <FIG>, the extension portion <NUM> extends from the substrate body <NUM> in a direction away from the installation surface <NUM>, and the temperature sensor <NUM> is mounted on the extension portion <NUM>. Accordingly, it is possible to reduce thermal effect that the temperature sensor <NUM> receives from the installation surface <NUM> by the amount due to separation of the temperature sensor <NUM> from the installation surface <NUM>. Thus, it is possible to improve the ability of the temperature sensor <NUM> to follow a change in the ambient temperature.

The temperature sensor <NUM> is mounted on the bent portion <NUM>, which is the distal end portion of the extension portion <NUM>. Accordingly, the distance between the temperature sensor <NUM> and the installation surface <NUM> can be increased by the amount due to mounting of the temperature sensor <NUM> on the distal end portion of the extension portion <NUM>, and thus it is possible to further reduce thermal effect that the temperature sensor <NUM> receives from the installation surface <NUM>.

The extension portion <NUM> is a cut-and-raised piece between the pair of slits <NUM> (see <FIG>) formed in the substrate <NUM>. Accordingly, in the process of manufacturing the substrate <NUM>, even when manufacturing a plurality of substrates <NUM> (obtaining multiple pieces) from one sheet material, it is possible to efficiently manufacture the substrate <NUM> by suppressing generation of a waste portion in the sheet material.

The bent portion <NUM> has the upper surface 32A facing toward a side opposite from the substrate body <NUM> and the lower surface 32B facing toward the substrate body <NUM> side, the temperature sensor <NUM> is mounted on the upper surface 32A, and the heat insulator <NUM> is attached to the lower surface 32B. Accordingly, the heat insulator <NUM> is disposed between the temperature sensor <NUM> and the installation surface <NUM>, and thus it is possible to more effectively reduce thermal effect that the temperature sensor <NUM> receives from the installation surface <NUM>.

In the first embodiment, modifications that are the same as those of the first example may be applied.

Next, a second example of the technology disclosed in the present application will be described.

In the second example illustrated in <FIG>, the configuration of the substrate unit <NUM> is changed from that of the first embodiment as follows. That is, a slit <NUM> extending along the side portion 34C, among the plurality of side portions 34A to 34D, is formed in the substrate <NUM>. The extension portion <NUM> is formed by a cut-and-raised piece formed between the slit <NUM> and the side portion 34C.

The extension portion <NUM> includes the standing portion <NUM> that stands with respect to the substrate body <NUM> and the bent portion <NUM> that is bent with respect to the standing portion <NUM>. The bent portion <NUM> overlaps a cut-out portion <NUM>, which is formed in the substrate <NUM> by the cut-and-raised piece, in plan view of the substrate <NUM>. The bent portion <NUM> has the upper surface 32A facing toward a side opposite from the substrate body <NUM> in a side view of the substrate <NUM> and the lower surface 32B facing toward the substrate body <NUM> side. The temperature sensor <NUM> is mounted on the upper surface 32A of the bent portion <NUM>. A heat insulator <NUM> having a block shape is attached to the lower surface 32B of the bent portion <NUM>.

In the second example, the substrate unit <NUM> is formed as follows. That is, the substrate <NUM>, having a flat shape and having the slit <NUM>, is formed; and the temperature sensor <NUM> and the plurality of heat generating modules <NUM> are mounted on the substrate <NUM>. Then, the extension portion <NUM> is bent between the substrate body <NUM> and the standing portion <NUM> and between the standing portion <NUM> and the bent portion <NUM>. Thus, the substrate unit <NUM> is formed.

Also with the third embodiment, the extension portion <NUM> extends from the substrate body <NUM> in a direction away from the installation surface, and the temperature sensor <NUM> is mounted on the extension portion <NUM>. Accordingly, it is possible to reduce thermal effect that the temperature sensor <NUM> receives from the installation surface by the amount due to separation of the temperature sensor <NUM> from the installation surface. Thus, it is possible to improve the ability of the temperature sensor <NUM> to follow a change in the ambient temperature.

The temperature sensor <NUM> is mounted on the bent portion <NUM>, which is the distal end portion of the extension portion <NUM>. Accordingly, the distance between the temperature sensor <NUM> and the installation surface can be increased by the amount due to mounting of the temperature sensor <NUM> on the distal end portion of the extension portion <NUM>, and thus it is possible to further reduce thermal effect that the temperature sensor <NUM> receives from the installation surface.

The extension portion <NUM> is a cut-and-raised piece formed between the slit <NUM>, which is formed in the substrate <NUM>, and the side portion 34C. Accordingly, in the process of manufacturing the substrate <NUM>, even when manufacturing a plurality of substrates <NUM> (obtaining multiple pieces) from one sheet material, it is possible to efficiently manufacture the substrate <NUM> by suppressing generation of a waste portion in the sheet material.

The bent portion <NUM> has the upper surface 32A facing toward a side opposite from the substrate body <NUM> and the lower surface 32B facing toward the substrate body <NUM> side, the temperature sensor <NUM> is mounted on the upper surface 32A, and the heat insulator <NUM> is attached to the lower surface 32B. Accordingly, the heat insulator <NUM> is disposed between the temperature sensor <NUM> and the installation surface, and thus it is possible to more effectively reduce thermal effect that the temperature sensor <NUM> receives from the installation surface.

In the second example, modifications that are the same as those of the first embodiment may be applied.

Next, a third example of the technology disclosed in the present application will be described.

In the third example illustrated in <FIG>, the configuration of the substrate unit <NUM> is changed from that of the first example as follows. That is, the extension portion <NUM> has a configuration in which the bent portion <NUM> (see <FIG>) is omitted. The extension portion <NUM> is an example of a "standing portion" and stands with respect to the substrate body <NUM>. The extension portion <NUM> is formed in a part of a peripheral portion of the substrate body <NUM> (for example, a central part of the side portion 34A in the longitudinal direction). The extension portion <NUM> has an inner surface 32C facing toward the substrate body <NUM> side in a side view of the substrate <NUM> and an outer surface 32D facing toward a side opposite from the substrate body <NUM>, and the temperature sensor <NUM> is mounted on the inner surface 32C.

In the third example, the substrate unit <NUM> is formed as follows. That is, the substrate <NUM>, having a flat shape and including the extension portion <NUM>, is formed; and the temperature sensor <NUM> and the plurality of heat generating modules <NUM> are mounted on the substrate <NUM>. Then, the extension portion <NUM> is bent between the substrate body <NUM> and the standing portion <NUM>. Thus, the substrate unit <NUM> is formed.

Also with the third example, the extension portion <NUM> extends from the substrate body <NUM> in a direction away from the installation surface, and the temperature sensor <NUM> is mounted on the extension portion <NUM>. Accordingly, it is possible to reduce thermal effect that the temperature sensor <NUM> receives from the installation surface by the amount due to separation of the temperature sensor <NUM> from the installation surface. Thus, it is possible to improve the ability of the temperature sensor <NUM> to follow a change in the ambient temperature.

The extension portion <NUM> has the inner surface 32C facing toward the substrate body <NUM> side and an outer surface 32D facing toward a side opposite from the substrate body <NUM> in a side view of the substrate <NUM>, and the temperature sensor <NUM> is mounted on the inner surface 32C. Accordingly, it is possible to suppress protrusion of the temperature sensor <NUM> in a lateral direction of the substrate body <NUM>.

In the third example, modifications that are the same as those of the first example may be applied.

Next, a fourth example of the technology disclosed in the present application will be described.

In the fourth example illustrated in <FIG>, the configuration of the substrate unit <NUM> is changed from that of the first example as follows. That is, the extension portion <NUM> is formed over the entire length of the side portion 34A in the longitudinal direction. The extension portion <NUM> includes the standing portion <NUM> that stands with respect to the substrate body <NUM> and the bent portion <NUM> that is bent from a side part of the standing portion <NUM> toward the substrate body <NUM> side. The bent portion <NUM> has the inner surface 32C facing toward the substrate body <NUM> side and the outer surface 32D facing toward a side opposite from the substrate body <NUM>, and the temperature sensor <NUM> is mounted on the inner surface 32C.

In the fourth example, the substrate unit <NUM> is formed as follows. That is, the substrate <NUM>, having a flat shape and including the extension portion <NUM>, is formed; and the temperature sensor <NUM> and the plurality of heat generating modules <NUM> are mounted on the substrate <NUM>. Then, the extension portion <NUM> is bent between the substrate body <NUM> and the standing portion <NUM> and between the standing portion <NUM> and the bent portion <NUM>. Thus, the substrate unit <NUM> is formed.

Also with the fourth example, the extension portion <NUM> extends from the substrate body <NUM> in a direction away from the installation surface, and the temperature sensor <NUM> is mounted on the extension portion <NUM>. Accordingly, it is possible to reduce thermal effect that the temperature sensor <NUM> receives from the installation surface by the amount due to separation of the temperature sensor <NUM> from the installation surface. Thus, it is possible to improve the ability of the temperature sensor <NUM> to follow a change in the ambient temperature.

The bent portion <NUM> has the inner surface 32C facing toward the substrate body <NUM> side and an outer surface 32D facing toward a side opposite from the substrate body <NUM>, and the temperature sensor <NUM> is mounted on the inner surface 32C. Accordingly, it is possible to suppress protrusion of the temperature sensor <NUM> in a lateral direction of the substrate body <NUM>.

In the fourth example, modifications that are the same as those of the first embodiment may be applied.

Next, a fifth example of the technology disclosed in the present application will be described.

In the fifth example illustrated in <FIG>, the configuration of the sensor device <NUM> is changed from that of the first example as follows. That is, the cover <NUM> includes a side wall <NUM> extending along a peripheral portion of the substrate <NUM>, and a pair of openings <NUM> are formed in the side wall <NUM> in the vicinity of the temperature sensor <NUM>. The pair of openings <NUM> are disposed on both sides of the extension portion <NUM> on which the temperature sensor <NUM> is mounted. For example, a dustproof and drip-proof film having air permeability is provided in the pair of openings <NUM>.

When the openings <NUM> are formed in the side wall <NUM> in the vicinity of the temperature sensor <NUM> as described above, air outside the sensor device <NUM> can be supplied to the temperature sensor <NUM> through the openings <NUM>, and thus it is possible to improve the ability of the temperature sensor <NUM> to follow a change in the ambient temperature.

The cover <NUM> according to the fifth example, having the openings <NUM>, may be used in combination with the configuration of the substrate unit <NUM> according to any of the first to fourth examples and to the first embodiment,.

Claim 1:
A sensor device to be installed on an installation surface, comprising:
a substrate (<NUM>) including a substrate body (<NUM>) that is disposable along the installation surface (<NUM>) and an extension portion (<NUM>) that extends from the substrate body (<NUM>) in a direction (A) away from the installation surface (<NUM>); and
a temperature sensor (<NUM>) that is mounted on the extension portion (<NUM>) and that is configured to detect an ambient temperature around the sensor device;
wherein the substrate body (<NUM>) includes a plurality of side portions (34A to 34D) that form the peripheral portion of the substrate body (<NUM>),
characterized in that the extension portion (<NUM>) is a cut-and-raised piece that is formed in the substrate (<NUM>) between a pair of slits (<NUM>) that are formed in the substrate (<NUM>), the pair of slits (<NUM>) extending from a central part, in the longitudinal direction, of a first side portion (34A) toward a second side portion (34B) opposite to the first side portion (34A).