Devices for measuring biological information

Abstract

To provide a biological information measuring device for enabling accurate measurement while suppressing discomfort during measurement.SOLUTION: According to the present disclosure, a biological information measuring device arranges a first housing surface for exposing a temperature sensor having a user's torso part as a measurement object toward the torso part, and satisfies at least an expression 1 and an expression 2, or an expression 3 among the expression 1: a first curvature radius RWS / thickness T≤6, the expression 2: a second curvature radius RWL / thickness T≤10, and the expression 3: (the first curvature radius RWS+the second curvature radius RWL) / thickness T≤17, which shows the first curvature radius RWS corresponding to a first direction, the second curvature radius RWL corresponding to a second direction, and thickness T corresponding to length including a tip of a temperature sensor in a third direction perpendicular to the first direction and the second direction in the case that width of the first direction following a user's width direction is regarded as first width WS, and that width of the second direction of following a user's height direction is regarded as second width WL.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This disclosure relates to a device for measuring biological information. [Background technology]

[0002] Various measuring sensors worn to assess health status utilize measurement methods that involve contact with the skin or clothing surface. For example, there are known technologies that measure skin temperature by having a skin temperature sensor (also simply called a "temperature sensor") that protrudes at a predetermined height and is slightly embedded in the user's skin (see Patent Document 1 below, etc.). [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2019-178914 [Overview of the project] [Problems that the invention aims to solve]

[0004] However, there is room for improvement in the conventional technologies described above. For example, if the protrusion length of the temperature sensor is shortened to reduce skin penetration and thus reduce discomfort to the user, improving the wearing comfort, stable temperature measurement may be difficult due to the positional relationship between the housing and the skin temperature sensor, causing the temperature sensor to float above the skin surface. Thus, there is a trade-off between the discomfort to the user and the accuracy of measurement, and it is desirable to enable accurate measurement while suppressing discomfort during measurement.

[0005] Therefore, this disclosure proposes a biological information measurement device that can enable accurate measurement while suppressing discomfort during measurement. [Means for solving the problem]

[0006] To solve the above problems, the biological information measurement device according to the present disclosure has a first housing surface from which a temperature sensor targeting the user's torso is exposed, and the biological information measurement device is positioned with the first housing surface facing the torso during measurement, wherein the width in the first direction along the user's width direction is defined as the first width WS, and the width in the second direction intersecting the first direction and along the user's height direction is defined as the second width WL, and the intersection point of the first housing surface with a first curve that has the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface along the first direction is defined as the first intersection point, and the intersection point of a second curve that has the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface, located between the first intersection point and the temperature sensor along the first direction is defined as the second intersection point, and the maximum radius of curvature of the first curve and the second curve is defined as the largest radius of curvature of the first curve and the second curve Equation 1 below shows the relationship between the first radius of curvature RWS, which is the diameter, and the thickness T, which corresponds to the length including the tip of the temperature sensor in a third direction perpendicular to the first and second directions. The third intersection point is the point where the first housing surface is connected by a third curve, which is the curve with the largest radius of curvature passing through the first housing surface along the second direction, and the fourth intersection point is the point where the fourth curve, which is the curve with the largest radius of curvature passing through the first housing surface and is located between the third intersection point and the temperature sensor along the second direction, is connected by a fourth curve, which is the curve with the largest radius of curvature passing through the first housing surface and the tip of the temperature sensor. Equation 2 below shows the relationship between the second radius of curvature RWL, which is the largest radius of curvature among the radius of curvature of the third curve and the radius of curvature of the fourth curve, and the thickness T. Equation 3 below shows the relationship between the sum of the first radius of curvature RWS and the second radius of curvature RWL and the thickness T. At least Equation 1 and Equation 2, or Equation 3, are satisfied. Equation 1: First radius of curvature RWS / Thickness T ≤ 6 Equation 2: Second radius of curvature RWL / Thickness T ≤ 10 Equation 3: (First radius of curvature RWS + Second radius of curvature RWL) / Thickness T ≤ 17 [Effects of the Invention]

[0007] According to one embodiment, it is possible to enable accurate measurement while suppressing discomfort during measurement. [Brief explanation of the drawing]

[0008] [Figure 1] This figure shows an example of a biometric information measurement device according to an embodiment. [Figure 2] This is a plan view of the first housing side of a device for measuring biological information. [Figure 3] This figure shows an example of the arrangement of devices for measuring biological information. [Figure 4] This figure shows an example of the first radius of curvature and thickness. [Figure 5] This figure shows an example of the second radius of curvature and thickness. [Figure 6] This figure shows the measurement results using a biometric information measurement device. [Figure 7] This figure shows examples of the first and second intersections. [Figure 8] This figure shows examples of the third and fourth intersections. [Figure 9] This figure shows another example of the first and second intersections. [Figure 10] This figure shows the case where the first and second intersections do not lie on the same radius of curvature. [Figure 11] This figure shows an example of a support structure. [Figure 12] This figure shows another example of the arrangement of devices for measuring biological information. [Figure 13] This figure shows an example of the tip of a temperature sensor. [Figure 14] This figure shows an example of a straight line passing through the tip of a temperature sensor. [Figure 15] This figure shows an example of the first and second intersection points determined by the straight lines. [Figure 16] This figure shows another example of the derivation of the first radius of curvature. [Figure 17] This figure shows examples of the third and fourth intersections determined by the straight lines. [Figure 18] FIG. is a diagram showing another example of the derivation of the second radius of curvature.

BEST MODE FOR CARRYING OUT THE INVENTION

[0009] Hereinafter, embodiments of the present disclosure will be described in detail based on the drawings. In the following embodiments, the same parts are denoted by the same reference numerals, and redundant descriptions are omitted.

[0010] (1. Embodiment) (1-1. An example of a biological information measurement device according to the embodiment) First, the configuration of the biological information measurement device will be described using FIGS. 1 and 2. FIG. 1 is a diagram showing an example of a biological information measurement device according to the embodiment. FIG. 2 is a plan view of the first housing surface side of the biological information measurement device. For example, FIG. 2 is a top view of the biological information measurement device 100. In the example shown below, a case where the body part 11 of the user 10 to be measured for body temperature (temperature) is the chest of the user will be described as an example. The body part of the user 10 to be measured for body temperature (temperature) may be any part such as a body part other than the chest, but this will be described later.

[0011] The biological information measurement device 100 shown in FIGS. 1 and 2 is a device that executes measurement processing of biological information of the user 10. The biological information measurement device 100 is a measurement device having a function of measuring the body temperature (temperature) of the user 10. For example, the biological information measurement device 100 is held by clothing such as an undergarment (underwear 200 in FIG. 3, etc.) worn (attached) by the user 10 on the upper body, and measures the body temperature (temperature) of the user regularly (for example, at a fixed time every night). As shown in FIG. 2, the biological information measurement device 100 has a first housing surface 111 on which a temperature sensor 120 for measuring the body part 11 of the user 10 (the chest of the user 10 in FIG. 1) is exposed. The biological information measurement device 100 is arranged with the first housing surface 111 facing the body part 11 (the chest of the user 10 in FIG. 1) during measurement.

[0012] In Figure 1, the biometric information measurement device 100 is positioned with its first housing surface 111 facing the torso 11 of the user 10. The first width WS represents the width in the first direction, which is aligned with the width direction (left-right direction) of the user 10. The second width WL represents the width (height) in the second direction, which is aligned with the height direction (up-down direction) of the user 10. In other words, the biometric information measurement device 100 is positioned with the first width WS aligned with the left-right direction of the user and the second width WL aligned with the up-down direction of the user.

[0013] In Figures 1 and 2, the case where the second width WL is longer than the first width WS is shown as an example, but the relationship between the first width WS and the second width WL can be any relationship as long as equations 1 and 2 or equation 3 are satisfied. For example, the first width WS may be longer than the second width WL, or the first width WS and the second width WL may be the same, as long as equations 1 and 2 or equation 3 are satisfied.

[0014] The biological information measurement device 100 comprises a housing 110 and a temperature sensor 120. The housing 110 houses various components used for measuring biological information. The housing 110 has a first housing surface 111. The first housing surface 111 has an opening through which the temperature sensor 120 is exposed.

[0015] The temperature sensor 120 is a sensor that detects the temperature of the object to be measured. For example, the temperature sensor 120 is a temperature sensor that measures the body temperature (temperature) of user 10. The temperature sensor 120 is positioned so that its tip protrudes from the opening of the first housing surface 111. The temperature sensor 120 detects the body temperature (temperature) of user 10 with the tip that protrudes from the first housing surface 111.

[0016] In addition to the temperature sensor 120, the biological information measurement device 100 may also have various information processing functions within the housing 110. For example, the biological information measurement device 100 may have the following configuration.

[0017] For example, the biological information measurement device 100 may have a communication unit implemented by a network interface controller or the like. The biological information measurement device 100 is connected to a network by wired or wireless means via the communication unit, and transmits and receives information with external devices via the network. For example, the biological information measurement device 100 can transmit and receive data with a server device such as a cloud server that collects measurement results and a user terminal such as a smartphone or tablet used by user 10 via wireless communication or the like.

[0018] The biometric information measurement device 100 transmits the user's body temperature data to the user terminal or server device via its communication unit. For example, the biometric information measurement device 100 may also receive requests to transmit body temperature data from the user terminal used by the user 10 via its communication unit. In this case, upon receiving a request to transmit body temperature data, the biometric information measurement device 100 transmits the body temperature data of the user 10 that it has accumulated up to that point to the user terminal used by the user 10.

[0019] The biological information measurement device 100 may have a storage unit implemented by, for example, a semiconductor memory element such as RAM (Random Access Memory) or flash memory, or a storage device such as a hard disk or optical disc. The biological information measurement device 100 stores data of the user's body temperature (temperature) measured by the temperature sensor 120 in its storage unit.

[0020] The biological information measurement device 100 may have a control unit that is implemented by a CPU (Central Processing Unit) or MPU (Micro Processing Unit), for example, by executing a program stored inside the biological information measurement device 100 using RAM or the like as a working area. The biological information measurement device 100 measures body temperature (temperature) detected by the temperature sensor 120 under the control of the control unit.

[0021] The biological information measurement device 100 may have an input unit (e.g., a touch panel) for receiving various operations from the user, and a display unit (e.g., a liquid crystal display) for displaying various information. The configuration of the biological information measurement device 100 described above is merely an example, and the biological information measurement device 100 may have any configuration depending on the desired function.

[0022] (1-2. Example of placement of biological information measurement devices) Here, using Figure 3, an example of placement on the torso 11 of the user 10 will be explained. Figure 3 is a diagram showing an example of placement of a biometric information measuring device. In Figure 3, the underwear 200 before placement of the biometric information measuring device 100 is described as "underwear 2001," and the underwear 200 after placement of the biometric information measuring device 100 is described as "underwear 2002." In addition, when explaining without making a distinction between underwear 2001 before placement of the biometric information measuring device 100 and underwear 2002 after placement of the biometric information measuring device 100, they will be described as "underwear 200."

[0023] As shown in Figure 3, the underwear 200 is attached to the torso 11 of the user 10 (the chest of the user 10 in Figure 3) and covers at least a portion of the torso 11 of the user 10. For example, the underwear 200 is a so-called bra, and may be a bra worn at night (night bra). Although it is referred to as underwear here, the underwear 200 may also be a band or a belly band. For example, the underwear 200 may be any member that can hold the biometric information measurement device 100, and "underwear" may be read as "holding member". For example, the underwear 200 may be a member (holding member) that can be used regardless of gender, or it may be a band-type member (holding member) for men.

[0024] The underwear 200 has a holding portion 210 for holding the biometric information measurement device 100. The holding portion 210 is located approximately in the center of the user 10's torso 11 in the width direction (left-right direction) when the underwear 200 is attached to the user 10's torso 11. The holding portion 210 has an opening 211 that exposes the temperature sensor 120 of the biometric information measurement device 100. The opening 211 of the holding portion 210 is positioned to face the user 10's torso 11 when the underwear 200 is attached to the user 10's torso 11.

[0025] As shown in Figure 3, the underwear 2002 holds the biometric information measuring device 100 in the holding part 210 with the first housing surface 111 facing the opening 211. In this way, the biometric information measuring device 100 is held in the holding part 210 with the temperature sensor 120 exposed from the opening 211. After the biometric information measuring device 100 is placed, the underwear 200 (underwear 2002) is attached to the torso 11 of the user 10, and the biometric information measuring device 100 detects the user 10's body temperature (temperature) when the temperature sensor 120 comes into contact with the torso 11 of the user 10. Note that the arrangement shown in Figure 3 is merely an example, and the arrangement of the biometric information measuring device 100 on the torso 11 of the user 10 may be in any manner.

[0026] (1-3. Radius of curvature and thickness) From here, the radius of curvature and thickness will be explained using Figures 4 and 5. Figure 4 is a diagram showing an example of the first radius of curvature and thickness. For example, Figure 4 is a side view of the bio-information measurement device 100 from a direction intersecting the first direction (the second direction). Figure 5 is a diagram showing an example of the second radius of curvature and thickness. For example, Figure 5 is a side view of the bio-information measurement device 100 from a direction intersecting the second direction (the first direction). Figures 4 and 5 are diagrams showing an example of the shape of the bio-information measurement device 100.

[0027] The first radius of curvature RWS shown in Figure 4 is the radius of curvature corresponding to the direction of the first width WS (the first direction). In Figure 4, the first radius of curvature RWS corresponds to the radius of curvature of curve C1, which is a curve that passes through the tip of the temperature sensor 120 and both ends of the first housing surface 111 along the first direction. The first radius of curvature RWS is derived according to the size, shape, etc., of the biological information measurement device 100, but the details of the derivation of the first radius of curvature RWS will be described later.

[0028] Furthermore, the second radius of curvature RWL shown in Figure 5 is the radius of curvature corresponding to the direction of the second width WL (the second direction). In Figure 5, the second radius of curvature RWL corresponds to the radius of curvature of curve C3, which is a curve that passes through the tip of the temperature sensor 120 and both ends of the first housing surface 111 along the second direction. The second radius of curvature RWL is derived according to the size, shape, etc., of the biological information measurement device 100, but the details of the derivation of the second radius of curvature RWL will be described later.

[0029] The thickness T shown in Figures 4 and 5 corresponds to the length including the tip of the temperature sensor 120 in a third direction (the thickness direction of the housing 110) that is perpendicular to the first and second directions. In Figures 4 and 5, the thickness T corresponds to the length from the second housing surface 112, which is the back surface of the first housing surface 111, to the tip of the temperature sensor 120. The thickness T is derived depending on the presence or absence of the support 130, which will be described later, but the details of the derivation of the thickness T will be described later.

[0030] (1-4. An example of measurement results using a biometric information measurement device) Figure 6 shows a list of numerical values ​​for each size of biometric information measurement device and the measurement results obtained using that device. Figure 6 is a diagram showing the measurement results obtained using a biometric information measurement device.

[0031] The 11 measurement results for Examples #1 to #11 shown in Figure 6 represent the results obtained using a biometric information measurement device 100 configured to the corresponding size. The 2 measurement results for Comparative Examples #1 and #2 shown in Figure 6 represent the results obtained using a conventional device configured to the corresponding size.

[0032] In the list in Figure 6, "Size (unit: mm)" indicates the size of the device in millimeters (mm). "Vertical R" corresponds to the radius of curvature of the device along the subject's height direction (up and down direction) when the device is placed. For example, in the biometric information measurement device 100, "Vertical R" corresponds to the second radius of curvature RWL. "Horizontal R" corresponds to the radius of curvature of the device along the subject's width direction (left and right direction) when the device is placed. For example, in the biometric information measurement device 100, "Horizontal R" corresponds to the first radius of curvature RWS.

[0033] "Total thickness (housing thickness + sensor height + pad)" corresponds to the length in the thickness direction of the device and is the sum of the housing thickness, sensor height, and pad thickness. Here, the pad corresponds to the support 130 (see Figure 11), but details will be described later. For example, if there is a pad, "total thickness" corresponds to the length from the tip of the sensor to the bottom surface of the pad. Note that in Figure 6, only Examples #2 and #7 correspond to cases where a pad is provided, and all others correspond to cases where there is no pad. Also, if there is no pad, "total thickness" corresponds to the length from the tip of the sensor to the bottom surface of the housing. For example, in the biometric information measurement device 100, "total thickness" corresponds to the thickness T.

[0034] "Sensor height only" corresponds to the length of the portion of the sensor that protrudes from the housing in the thickness direction of the device. For example, in the biological information measurement device 100, "sensor height only" corresponds to the length from the first housing surface 111 to the tip of the temperature sensor 120 in the third direction. "Housing thickness only" corresponds to the length of the housing in the thickness direction of the device. For example, in the biological information measurement device 100, "housing thickness only" corresponds to the length from the second housing surface 112 to the first housing surface 111 in the third direction. "Pad" corresponds to the length of the pad in the thickness direction of the device. For example, "pad" corresponds to the thickness of the support 130.

[0035] The "Ratio Calculation" in the list in Figure 6 shows the ratio calculated based on the device size. "Longitudinal R / Total Thickness" shows the value obtained by dividing the longitudinal R value by the total thickness value. For example, in the biomedical information measurement device 100, "Longitudinal R / Total Thickness" corresponds to the value obtained by dividing the second radius of curvature RWL by the thickness T. "Horizontal R / Total Thickness" shows the value obtained by dividing the horizontal R value by the total thickness value. For example, in the biomedical information measurement device 100, "Horizontal R / Total Thickness" corresponds to the value obtained by dividing the first radius of curvature RWS by the thickness T. "(Longitudinal R + Horizontal R) / Total Thickness" shows the value obtained by dividing the sum of the longitudinal R value and the horizontal R value by the total thickness value. For example, in the biomedical information measurement device 100, "Longitudinal R + Horizontal R / Total Thickness" corresponds to the value obtained by dividing the sum of the second radius of curvature RWL and the first radius of curvature RWS by the thickness T.

[0036] Examples of device sizes are given below. For example, in each of the biometric information measurement devices 100 in Examples #1, #4, #5, and #9 shown in Figure 6, the second width WL corresponding to the long width is 50 mm, and the first width WS corresponding to the short width is 40 mm. In addition, in the biometric information measurement device 100 of Example #3 shown in Figure 6, the second width WL corresponding to the long width is 48 mm, and the first width WS corresponding to the short width is 37 mm.

[0037] The "Results" column in Figure 6 shows the results of measurements using the device. "Subject #1" corresponds to the measurement results for the first subject. "Subject #2" corresponds to the measurement results for the second subject. "Subject #3" corresponds to the measurement results for the third subject. Thus, Figure 6 shows the measurement results for three subjects. Since the degree of floating varies depending on the subject's body shape and sleeping position, the measurements shown in Figure 6 involved three subjects wearing the device during sleep for three days under each condition. In the judgment method in "Results," if there were no days on which the device was judged to float by 30% or more (poor contact) during sleep, it was judged as "no floating." If there was even one day on which the device was judged to float by 30% or more (poor contact), it was judged as "floating." In the "Results" shown in Figure 6, "○" indicates no floating, and "×" indicates floating. Note that in the measurements shown in Figure 6, floating was judged using a contact sensor, but floating can be judged using any method, not limited to using a contact sensor. Also, "-" in "Results" indicates that measurement results have not been obtained.

[0038] As shown in the list in Figure 6, none of the 11 measurement results for Examples #1 to #11, which correspond to the biometric information measurement device 100, showed a "Result" of "×". However, the two measurement results for Comparative Examples #1 and #2, which correspond to conventional devices, both included results of "×". For example, in the measurement of Comparative Example #1, which corresponds to the conventional device, the result for subject #3 was "×". Also, in the measurement of Comparative Example #2, which corresponds to the conventional device, the results for all subjects #1 to #3 were "×". Thus, the measurement results shown in Figure 6 demonstrate that while measurement may be difficult with conventional devices, the biometric information measurement device 100, which is configured with sizes corresponding to each of the 11 examples #1 to #11, is capable of accurate measurement.

[0039] As shown in the list in Figure 6, it is desirable that the biological information measurement device 100 satisfies both a first condition, where the value obtained by dividing the first radius of curvature RWS by the thickness T is 6 or less, and a second condition, where the value obtained by dividing the second radius of curvature RWL by the thickness T is 10 or less, or a third condition, where the value obtained by dividing the sum of the first radius of curvature RWS and the second radius of curvature RWL by the thickness T is 17 or less.

[0040] Furthermore, the biological information measurement device 100 may be configured to satisfy all of the first, second, and third conditions. It is also desirable that the biological information measurement device 100 be configured such that both the first radius of curvature RWS and the second radius of curvature RWL are 100 or less, and the thickness T is 10 mm or more.

[0041] The bio-information measurement device 100, configured within the size range described above, can stably and accurately measure skin temperature even when the protruding dimension of the temperature sensor 120 is shortened, reducing penetration into the skin and improving the wearing comfort. In this way, the bio-information measurement device 100 can enable accurate measurement while suppressing discomfort during measurement. Therefore, the bio-information measurement device 100 can maintain a stable contact state when acquiring bio-information by bringing the temperature sensor 120 into contact with the surface of the living skin.

[0042] Furthermore, the biological information measurement device 100 is preferably within the following range of device shape. The size (length, width) and thickness affect pain and discomfort when worn. For example, the length (corresponding to the second width WL) of the biological information measurement device 100 is preferably 20 mm to 60 mm, and more preferably 40 mm to 50 mm. The width (corresponding to the first width WS) of the biological information measurement device 100 is preferably 20 mm to 50 mm, and more preferably 30 mm to 40 mm. The thickness (corresponding to the thickness T) of the biological information measurement device 100 is preferably 7.5 mm to 20 mm, and more preferably 12 mm to 15 mm.

[0043] Furthermore, the height of the sensor only (the sensor portion exposed from the housing) is preferably within the following range. The height of the sensor portion exposed from the housing affects pain and discomfort when worn. For example, the height of the temperature sensor 120 of the biometric information measurement device 100 is preferably 0.1 mm to 5.0 mm, and more preferably 0.5 mm to 3.5 mm.

[0044] (1-5. Derivation of the radius of curvature) (1-5-1. When the two intersection points have the same radius of curvature) Next, we will explain how to derive (calculate) the radius of curvature. First, using Figures 7 and 8, we will explain an example of how to derive the radius of curvature when the temperature sensor 120 is exposed from the central part of the first housing surface 111, as in the example described above. Figure 7 shows an example of the first and second intersections. Figure 8 shows an example of the third and fourth intersections.

[0045] Note that explanations of points similar to those described above will be omitted as appropriate, for example, by using the same reference numerals. For example, the first width WS shown in Figure 7 and the second width WL shown in Figure 8 are the same as the first width WS and second width WL described above, so their explanation will be omitted. As for how to determine the intersection point as shown below, for example, as shown in Figures 7 and 8, the point where the radius of curvature is maximized when drawing the first housing surface 111 and the temperature sensor 120 is the intersection point.

[0046] Figure 7 shows an example of determining two intersections (intersections P1 and P2) of the first housing surface 111 along the direction of the first width WS (first direction). Intersection P1 in Figure 7 corresponds to the first intersection of the first housing surface 111, which is the intersection point of the first housing surface 111 connected by a first curve (curve C1 in Figure 7), which is the curve with the largest radius of curvature passing through the tip of the temperature sensor 120 and the first housing surface 111 along the first direction. Intersection P2 in Figure 7 is located between the first intersection point P1 and the temperature sensor 120 along the first direction, and corresponds to the second intersection point, which is the intersection point of the second curve (curve C1 in Figure 7), which is the curve with the largest radius of curvature passing through the tip of the temperature sensor 120 and the first housing surface 111.

[0047] Thus, the example in Figure 7 shows the case where the first curve and the second curve are the same curve C1, and the intersection point P1 of the first curve and the intersection point P2 of the second curve lie on the same radius of curvature. Therefore, in the example in Figure 7, the radius of curvature of curve C1 is set to the first radius of curvature RWS.

[0048] Figure 8 shows an example of determining two intersections (intersections P3 and P4) of the first housing surface 111 along the direction of the second width WL (second direction). Intersection P3 in Figure 8 corresponds to the third intersection of the first housing surface 111, which is the intersection point of the first housing surface 111 connected by a third curve (curve C3 in Figure 8), which is the curve with the largest radius of curvature passing through the tip of the temperature sensor 120 and the first housing surface 111 along the second direction. Intersection P4 in Figure 8 is located along the third direction, sandwiching the temperature sensor 120 between intersection P3, which is the third intersection point, and corresponds to the fourth intersection point, which is the intersection point of the first housing surface 111, connected by a fourth curve (curve C3 in Figure 8), which is the curve with the largest radius of curvature passing through the tip of the temperature sensor 120 and the first housing surface 111.

[0049] Thus, the example in Figure 8 shows the case where the third and fourth curves are the same curve C3, and the intersection point P3 of the third curve and the intersection point P4 of the fourth curve lie on the same radius of curvature. Therefore, in the example in Figure 8, the radius of curvature of curve C3 is set to the second radius of curvature RWL.

[0050] Furthermore, even if the exposed position of the temperature sensor 120 is not in the central part of the first housing surface 111, if the first intersection point P1 and the second intersection point P2 lie on the same radius of curvature, the radius of curvature of curve C1 is set to the first radius of curvature RWS, as in the case shown in Figure 7. An example of this case is shown in Figure 9. Figure 9 shows another example of the first and second intersection points.

[0051] Figure 9 shows the case where the temperature sensor 120 is positioned towards one side of the direction of the first width WS (first direction). The derivation of curve C1 is the same as in Figure 7, so a detailed explanation is omitted. Even when the temperature sensor 120 is positioned towards one side of the direction of the second width WL (second direction), if the third intersection and the fourth intersection lie on the same radius of curvature, the radius of curvature of the third curve (curve C3 in Figure 8) is set to the second radius of curvature RWL, as in the case shown in Figure 8.

[0052] (1-5-2. When the two intersection points do not have the same radius of curvature) Furthermore, if the two intersection points do not lie on the same radius of curvature, the largest of the radii of curvature of the curves corresponding to each intersection point is used as the radius of curvature. This point will be explained using Figure 10. Figure 10 shows the case where the first and second intersection points do not lie on the same radius of curvature.

[0053] Figure 10 shows an example of determining two intersections (intersections P1 and P2) of the first housing surface 111 along the direction of the first width WS (first direction). Intersection P1 in Figure 10 corresponds to the first intersection, which is the intersection of the first housing surface 111 connected by a first curve (curve C1 in Figure 10), which is a curve with the largest radius of curvature passing through the tip of the temperature sensor 120 and the first housing surface 111 along the first direction. Intersection P2 in Figure 10 is located along the first direction, sandwiching the temperature sensor 120 between the first intersection P1 and the second curve (curve C2 in Figure 10), which is a curve with the largest radius of curvature passing through the tip of the temperature sensor 120 and the first housing surface 111.

[0054] As shown in the example in Figure 10, the first curve, curve C1, and the second curve, curve C2, are different, and the intersection point P1 and the intersection point P2 do not lie on the same radius of curvature. Therefore, the largest radius of curvature between the radii of curvature of curve C1 and the radii of curvature of curve C2 becomes the first radius of curvature RWS. In the example in Figure 10, the radius of curvature of curve C1 is larger than the radius of curvature of curve C2, so the radius of curvature of curve C1 becomes the first radius of curvature RWS.

[0055] Furthermore, the derivation of the radius of curvature in the direction of the second width WL (second direction) (second radius of curvature RWL) when the two intersection points are not on the same radius of curvature is the same as the derivation of the first radius of curvature RWS shown in Figure 10, so a detailed explanation is omitted.

[0056] (1-6.Support) As described above, in the biological information measurement device 100, a support 130 that points to the housing 110 may be used. This point will be explained with reference to Figure 11. Figure 11 is a diagram showing an example of a support. For example, Figure 11 is a side view of the biological information measurement device 100 provided with the support 130.

[0057] As shown in Figure 11, the support 130 is placed on top of the second housing surface 112. When the support 130 is provided as shown in Figure 11, the thickness T corresponds to the length from the bottom surface of the support 130, which is the surface opposite to the surface facing the second housing surface 112, to the tip of the temperature sensor 120.

[0058] The support 130 may be a fixing belt or the like formed from any material such as resin, or it may be added to the holding part of clothing like a bra pad, or it may be constructed by making the fabric of the clothing thicker from the start. For example, the support 130 may be the pad described in Figure 6. For example, since the biometric information measuring device 100 is placed (attached) to the torso 11 of the user 10 by a component such as underwear 200, the thickness of the fabric such as the support 130 is added to the biometric information measuring device 100. Therefore, the thickness T may be a thickness that takes that thickness into account. For example, when the support 130 is placed on top of the housing 110, the thickness T may be a thickness that takes into account the thickness of the support 130. For example, in order to ensure the thickness of the device, the support 130 may be placed on top of the housing 110 on the attachment side to ensure the thickness of the device.

[0059] (1-6-1. Example of arrangement of a biometric information measurement device with a support) Here, an example of the arrangement mode of the body part 11 of the user 10 will be described using FIG. 12. FIG. 12 is a diagram showing another example of the arrangement of the biological information measuring device. In FIG. 12, the underwear 200 before the arrangement of the support 130 is described as "underwear 200 12 , 13 , 11 ", the underwear 200 in the state where only the support 130 is arranged is described as "underwear 200 12 ", and the underwear 200 after the arrangement of the biological information measuring device 100 is described as "underwear 200 13 ". In addition, when the underwear 200 11 , underwear 200 12 and underwear 200 13 are not particularly distinguished and described, they are described as "underwear 200". In addition, for the same points as those described above, such as FIG. 3, the description will be omitted as appropriate.

[0060] As shown in the underwear 200 of FIG. 12 12 , the underwear 200 holds the support 130 in the holding part 210. Also, as shown in the underwear 200 of FIG. 12 13 , the underwear 200 overlaps the support 130 and holds the biological information measuring device 100 in the holding part 210. For example, the underwear 200 holds the biological information measuring device 100 in the holding part 210 with the second housing surface 112 facing the support 130 side and the first housing surface 111 facing the opening 211 side. Thereby, the biological information measuring device 100 exposes the temperature sensor 120 from the opening 211 and is held by the holding part 210. After the biological information measuring device 100 is arranged, the underwear 200 (underwear 200 13 ) is worn on the body part 11 of the user 10, and when the temperature sensor 120 contacts the body part 11 of the user 10, the biological information measuring device 100 detects the body temperature (temperature) of the user 10. The arrangement mode shown in FIG. 12 is only an example, and the arrangement mode of the biological information measuring device 100 on the body part 11 of the user 10 can be any mode.

[0061] (Derivation of the radius of curvature using a straight line from 1-7.) The derivation of the radius of curvature is not limited to the example described above; the radius of curvature may also be derived using a straight line. This point will be explained below. First, Figures 13 and 14 will be used to explain the points related to the temperature sensor 120 in the derivation of the radius of curvature. Figure 13 is a diagram showing an example of the tip of the temperature sensor. Figure 14 is a diagram showing an example of a straight line passing through the tip of the temperature sensor. Points that are the same as those described above will be omitted as appropriate.

[0062] As shown in Figure 13, the intersection point of a line M1 passing through the center of the tip (surface) of the temperature sensor 120 and along the thickness direction of the housing 110, and a line F1 along the outermost surface (tip surface) of the temperature sensor 120, is determined as the tip point MP of the temperature sensor 120. Also, as shown in Figure 14, the intersection point of the line L passing through the tip point MP and the first housing surface 111 is determined by tilting the line L so that it approaches the first housing surface 111. In Figure 14, the line L is tilted so that one side (the left side in Figure 14) is lowered, and the point where the line L, shown as a dotted line, touches the first housing surface 111 is used as the intersection point.

[0063] First, using Figures 15 and 16, we will show an example of determining two intersections (intersection P1 and intersection P2) of the first housing surface 111 along the direction of the first width WS (first direction) using straight lines. Figure 15 is a diagram showing an example of the first and second intersections determined by straight lines. Figure 16 is a diagram showing another example of the derivation of the first radius of curvature.

[0064] In Figure 15, intersection point P1 corresponds to the first intersection point, which is the intersection point of the first housing surface 111 with the line L1 that connects the tip point MP of the temperature sensor 120 and the first housing surface 111 along the first direction. For example, in Figure 15, the intersection point P1 between the line L1 and the first housing surface 111 is determined by tilting the line L1 passing through the tip point MP so that one side (the left side in Figure 15) is lowered and approaches the first housing surface 111.

[0065] Furthermore, intersection point P2 in Figure 15 is located along the first direction, sandwiching the temperature sensor 120 between the first intersection point P1 and the second intersection point L2, which is the intersection point of the line L2 passing through the tip point MP of the temperature sensor 120 and the first housing surface 111. For example, in Figure 15, the intersection point P2 between the line L2 and the first housing surface 111 is determined by tilting the line L2 passing through the tip point MP so that the other side (the right side in Figure 15) is lowered and approaches the first housing surface 111.

[0066] In Figure 16, the first radius of curvature RWS is derived using intersections P1 and P2 determined as shown in Figure 15. In Figure 16, the first curve passing through the tip point MP of the temperature sensor 120 and intersection point P1 along the first direction, and the second curve passing through the tip point MP of the temperature sensor 120 and intersection point P2 along the first direction, are the same curve C1. Thus, the example in Figure 16 shows the case where the first curve and the second curve are the same curve C1, and the intersection point P1, which is the first intersection, and the intersection point P2, which is the second intersection, lie on the same radius of curvature. Therefore, in the example in Figure 16, the radius of curvature of curve C1 is taken as the first radius of curvature RWS.

[0067] Next, using Figures 17 and 18, we will show an example of determining two intersections (intersections P3 and P4) of the first housing surface 111 along the direction of the second width WL (second direction) using straight lines. Figure 17 shows an example of the third and fourth intersections determined by straight lines. Figure 18 shows another example of the derivation of the second radius of curvature.

[0068] Intersection P3 in Figure 17 corresponds to the third intersection point, which is the intersection point of the first housing surface 111 with the straight line L3 that passes through the tip point MP of the temperature sensor 120 and the first housing surface 111 along the second direction. For example, in Figure 17, the intersection point P3 between the straight line L3 and the first housing surface 111 is determined by tilting the straight line L3 passing through the tip point MP so that one side (the left side in Figure 17) is lowered and approaches the first housing surface 111.

[0069] Furthermore, intersection point P4 in Figure 17 is located along the second direction, sandwiching the temperature sensor 120 between the third intersection point P3 and the fourth intersection point L4, which connects the tip point MP of the temperature sensor 120 and the first housing surface 111. For example, in Figure 17, the intersection point P4 between the line L4 and the first housing surface 111 is determined by tilting the line L4 passing through tip point MP so that the other side (the right side in Figure 17) is lowered and approaches the first housing surface 111.

[0070] In Figure 18, the second radius of curvature RWL is derived using intersections P3 and P4 determined as shown in Figure 17. In Figure 18, the third curve passing through the tip point MP of the temperature sensor 120 and intersection point P3 along the second direction, and the fourth curve passing through the tip point MP of the temperature sensor 120 and intersection point P4 along the second direction, are the same curve C3. Thus, the example in Figure 18 shows the case where the third and fourth curves are the same curve C3, and the intersection point P3 of the third curve and the intersection point P4 of the fourth curve lie on the same radius of curvature. Therefore, in the example in Figure 18, the radius of curvature of curve C3 is taken as the second radius of curvature RWL.

[0071] Furthermore, the derivation of the first radius of curvature RWS and the second radius of curvature RWL when the two intersection points are not on the same radius of curvature is the same as the derivation explained in Figure 10, except for the point where the intersection points are determined using a straight line, so a detailed explanation is omitted.

[0072] (2. Other Embodiments) The processing according to the above embodiment may be carried out in various other forms besides the above embodiment. For example, in the above embodiment, the case in which the biometric information measuring device 100 is placed on the chest of the user 10 and sensing is performed was described as an example, but the biometric information measuring device 100 may be placed on various parts of the user 10, not just the chest. Thus, the biometric information measuring device 100 may sense the skin surface of various parts of the user 10, not just the chest. In the above example, the central part of the user's chest (the area between the anterior chest and the epigastric region) was shown as the target of body temperature (temperature) measurement, but the chest area to be measured is not limited to the above. For example, the biometric information measuring device 100 may be used to measure body temperature (temperature) at any location including the anterior chest, lateral chest, axilla (armpit), hypochondriac region, epigastric region, breast, etc. Furthermore, the biometric information measuring device 100 may be used to measure body temperature (temperature) at the user's torso, not just the chest. For example, the biometric information measuring device 100 may measure the user's abdomen for body temperature. The above example of a body temperature measurement target is merely one example; any part of the user's body that the biometric information measuring device 100 can measure body temperature from is acceptable.

[0073] For example, among the processes described in the above embodiments, all or part of the processes described as being performed automatically can be performed manually, or all or part of the processes described as being performed manually can be performed automatically by known methods. In addition, the processing procedures, specific names, and information including various data and parameters shown in the above document and drawings can be changed at will unless otherwise specified. For example, the various information shown in each figure is not limited to the information shown.

[0074] Furthermore, the components of each illustrated device are functionally conceptual and do not necessarily need to be physically configured as shown. In other words, the specific forms of distribution and integration of each device are not limited to those shown, and all or part of them can be functionally or physically distributed and integrated in any unit according to various loads and usage conditions.

[0075] Furthermore, the embodiments and modifications described above can be combined as appropriate, provided that the processing content is not inconsistent.

[0076] Furthermore, the effects described herein are merely illustrative and not limiting; other effects may also occur.

[0077] (3. Effects of the biometric information measurement device related to this disclosure) As described above, the biological information measuring device according to this disclosure (biological information measuring device 100 in an embodiment) has a first housing surface (first housing surface 111 in an embodiment) on which a temperature sensor (temperature sensor 120 in an embodiment) is exposed, which measures the torso (torso 11 in an embodiment) of the user (user 10), and the biological information measuring device is positioned with the first housing surface facing the torso when measuring, and the width in the first direction along the width direction of the user is defined as the first width WS, and intersecting the first direction If the width in the second direction along the user's height is defined as the second width WL, the intersection point of the first housing surface connected by the first curve (curve C1 in this embodiment), which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface along the first direction, is defined as the first intersection point (intersection point P1 in this embodiment). The intersection point of the second curve (curve C1 or curve C2 in this embodiment), which is located between the first intersection point and the temperature sensor along the first direction and is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface, is defined as the second intersection point (in this embodiment). Equation 1 shows the relationship between the first radius of curvature RWS, which is the largest of the radius of curvature of the first curve and the radius of curvature of the second curve, and the thickness T corresponding to the length including the tip of the temperature sensor in the third direction perpendicular to the first and second directions. The intersection point of the first housing surface connected by the third curve (curve C3 in this embodiment), which is the curve with the largest radius of curvature passing through the first housing surface along the second direction, is the third intersection point (intersection point P3 in this embodiment), and the third intersection point and the temperature sensor along the second direction When the intersection point of the fourth curve (curve C3 or curve C4 in the embodiment), which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface, is defined as the fourth intersection point (intersection point P4 in the embodiment), at least equations 1 and 2, or equation 3, which show the relationship between the second radius of curvature RWL (the largest of the radius of curvature of the third curve and the fourth curve) and the thickness T, and the sum of the first radius of curvature RWS and the second radius of curvature RWL and the thickness T, are satisfied, at least equations 1 and 2 are satisfied, or equation 3 is satisfied.

[0078] Furthermore, the biometric information measurement device has a first housing surface from which a temperature sensor, which measures the user's torso, is exposed, and the biometric information measurement device is positioned with the first housing surface facing the torso during measurement, and when the width in the first direction along the user's width direction is defined as the first width WS, and the width in the second direction intersecting the first direction and along the user's height direction is defined as the second width WL, the intersection point of the first housing surface connected by the first curve, which is a curve with the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface along the first direction, is defined as the first intersection point, and the intersection point of the second curve, which is located between the first intersection point and the temperature sensor along the first direction and is a curve with the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface, is defined as the second intersection point, and the radius of curvature of the first curve and When the radius of curvature with the largest radius of curvature among the two curves is defined as the first radius of curvature RWS, and the intersection point of the first housing surface drawn by the third curve, which is the curve with the largest radius of curvature passing through the first housing surface along the second direction, is defined as the third intersection point, and the intersection point of the fourth curve, which is located in the second direction between the third intersection point and the temperature sensor and is the curve with the largest radius of curvature passing through the first housing surface, is defined as the fourth intersection point, and the maximum radius of curvature among the radii of curvature of the third curve and the radii of curvature of the fourth curve is defined as the second radius of curvature RWL, then both the first radius of curvature RWS and the second radius of curvature RWL are 100 or less, and the thickness T corresponding to the length including the tip of the temperature sensor in the third direction perpendicular to the first and second directions is 10 mm or more.

[0079] Furthermore, the biometric information measurement device has a first housing surface from which a temperature sensor targeting the user's torso is exposed, and the biometric information measurement device is positioned with the first housing surface facing the torso during measurement, and when the width in the first direction along the user's width direction is defined as the first width WS, and the width in the second direction intersecting the first direction and along the user's height direction is defined as the second width WL, then a straight line (in this embodiment, a straight line) passing between the tip of the temperature sensor and the first housing surface along the first direction The first intersection point is defined as the point where the first housing surface is connected by line L1), and the second intersection point is defined as the point where a straight line (line L2 in this embodiment) is drawn along the first direction, sandwiching the temperature sensor between the first intersection point and the temperature sensor, and passing through the tip of the temperature sensor and the first housing surface. The radius of curvature of the first curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the first intersection point, and the radius of curvature of the second curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the second intersection point, are the two radii of curvature. Equation 1 shows the relationship between the first radius of curvature RWS and the thickness T corresponding to the length including the tip of the temperature sensor in a third direction perpendicular to the first and second directions. The third intersection point is the point where the first housing surface intersects with a straight line (straight line L3 in this embodiment) passing through the tip of the temperature sensor and the first housing surface along the second direction, and the intersection point is the point where the temperature sensor is sandwiched between the third intersection point and the first housing surface, and the tip of the temperature sensor intersects with a straight line (straight line L4 in this embodiment) passing through the first housing surface. When the intersection of the four points is taken, the second radius of curvature RWL, which is the largest of the three curves with the maximum radius of curvature passing through the tip of the temperature sensor and the third intersection, and the fourth curve with the maximum radius of curvature passing through the tip of the temperature sensor and the fourth intersection, is shown in equation 2, which shows the relationship between the thickness T and the second radius of curvature RWL, and the sum of the first radius of curvature RWS and the second radius of curvature RWL is shown in equation 3, which satisfies at least equations 1 and 2, or equation 3.

[0080] Furthermore, the biometric information measurement device has a first housing surface from which a temperature sensor, which measures the user's torso, is exposed, and the biometric information measurement device is positioned with the first housing surface facing the torso during measurement, and when the width in the first direction along the user's width direction is defined as the first width WS, and the width in the second direction intersecting the first direction and along the user's height direction is defined as the second width WL, and when the intersection point of the first housing surface drawn by a straight line passing through the tip of the temperature sensor and the first housing surface along the first direction is defined as the first intersection point, and the intersection point of a straight line passing through the tip of the temperature sensor and the first housing surface, which is located between the first intersection point and the temperature sensor along the first direction, is defined as the radius of curvature of the first curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the first intersection point, and the second curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the second intersection point When the radius of curvature of the two curves with the largest radius of curvature is defined as the first radius of curvature RWS, the intersection point of the first housing surface drawn by a straight line passing through the tip of the temperature sensor and the first housing surface along the second direction is defined as the third intersection point, and the intersection point of a straight line passing through the tip of the temperature sensor and the first housing surface, located between the third intersection point and the temperature sensor along the second direction, is defined as the fourth intersection point, and the largest radius of curvature of the third curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the third intersection point, and the radius of curvature of the fourth curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the fourth intersection point, is defined as the second radius of curvature RWL, then both the first radius of curvature RWS and the second radius of curvature RWL are 100 or less, and the thickness T corresponding to the length including the tip of the temperature sensor in the third direction perpendicular to the first and second directions is 10 mm or more.

[0081] As described above, the biometric information measuring device according to this disclosure has a size and shape that enables accurate temperature measurement while suppressing discomfort to the user, based on the relationship between the first width WS and the first radius of curvature RWS, which is based on the length of the protruding part of the tip of the temperature sensor, the second radius of curvature RWL, which is based on the second width WL and the length of the protruding part of the tip of the temperature sensor, and the thickness T, which corresponds to the length in the thickness direction. As a result, the biometric information measuring device can enable accurate measurement while suppressing discomfort during measurement.

[0082] Although embodiments of the present application have been described in detail based on the drawings, these are illustrative examples, and the present invention can be implemented in various other forms with modifications and improvements based on the knowledge of those skilled in the art, starting with the embodiments described in the disclosure section of the invention. [Explanation of symbols]

[0083] 100 Biometric Information Measurement Devices 110 cabinets 111 First enclosure surface 112 Second enclosure surface 120 Temperature Sensor 130 Support WS 1st width WL 2nd width RWS First radius of curvature RWL Second radius of curvature T Thickness

Claims

1. A biological information measurement device having a first housing surface from which a temperature sensor targeting the user's torso is exposed, wherein the first housing surface is positioned facing the torso during measurement, When the measurement is performed, if the width in the first direction along the user's width direction is defined as the first width WS, and the width in the second direction intersecting the first direction and along the user's height direction is defined as the second width WL, When the intersection point of the first housing surface drawn by a first curve, which is a curve with the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface along the first direction, is defined as the first intersection point, and the intersection point of a second curve, which is located in the first direction between the first intersection point and the temperature sensor and is a curve with the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface, is defined as the second intersection point, The following equation 1 shows the relationship between the first radius of curvature RWS, which is the largest of the radius of curvature of the first curve and the radius of curvature of the second curve, and the thickness T, which corresponds to the length including the tip of the temperature sensor in a third direction perpendicular to the first and second directions. When the intersection point of the first housing surface drawn by a third curve, which is a curve with the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface along the second direction, is defined as the third intersection point, and the intersection point of a fourth curve, which is located in the second direction between the third intersection point and the temperature sensor and is a curve with the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface, is defined as the fourth intersection point, The following equation 2 shows the relationship between the second radius of curvature RWL, which is the largest of the radius of curvature of the third curve and the fourth curve, and the thickness T, and Of the following equation 3, which shows the relationship between the sum of the first radius of curvature RWS and the second radius of curvature RWL and the thickness T, A biological information measurement device that satisfies at least equations 1 and 2, or equation 3. Equation 1: First radius of curvature RWS / Thickness T ≤ 6 Equation 2: Second radius of curvature RWL / Thickness T ≤ 10 Equation 3: (First radius of curvature RWS + Second radius of curvature RWL) / Thickness T ≤ 17

2. A biological information measurement device having a first housing surface from which a temperature sensor targeting the user's torso is exposed, wherein the first housing surface is positioned facing the torso during measurement, When the measurement is performed, if the width in the first direction along the user's width direction is defined as the first width WS, and the width in the second direction intersecting the first direction and along the user's height direction is defined as the second width WL, When the intersection point of the first housing surface drawn by a first curve, which is a curve with the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface along the first direction, is defined as the first intersection point, and the intersection point drawn by a second curve, which is located between the first intersection point and the temperature sensor along the first direction and is a curve with the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface, is defined as the second intersection point, the largest radius of curvature among the radius of curvature of the first curve and the radius of curvature of the second curve is defined as the first radius of curvature RWS. When the intersection point of the first housing surface drawn by a third curve, which is a curve with the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface along the second direction, is defined as the third intersection point, and the intersection point of a fourth curve, which is located in the second direction between the third intersection point and the temperature sensor and is a curve with the largest radius of curvature passing through the tip of the temperature sensor and the first housing surface, is defined as the fourth intersection point, and the largest of the radii of curvature of the third curve and the radii of curvature of the fourth curve is defined as the second radius of curvature RWL, A biological information measuring device wherein both the first radius of curvature RWS and the second radius of curvature RWL are 100 mm or less, and the thickness T corresponding to the length including the tip of the temperature sensor in a third direction perpendicular to the first and second directions is 10 mm or more.

3. A biological information measurement device having a first housing surface from which a temperature sensor targeting the user's torso is exposed, wherein the first housing surface is positioned facing the torso during measurement, When the measurement is performed, if the width in the first direction along the user's width direction is defined as the first width WS, and the width in the second direction intersecting the first direction and along the user's height direction is defined as the second width WL, When the intersection point of the first housing surface drawn by a straight line passing through the tip of the temperature sensor and the first housing surface along the first direction is defined as the first intersection point, and the intersection point of a straight line passing through the tip of the temperature sensor and the first housing surface, located between the first intersection point and the temperature sensor along the first direction, is defined as the second intersection point, The following equation 1 shows the relationship between the radius of curvature of the first curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the first intersection, and the radius of curvature of the second curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the second intersection, which is the first radius of curvature RWS, which is the largest radius of curvature among these two curves, and the thickness T corresponding to the length including the tip of the temperature sensor in a third direction perpendicular to the first and second directions. When the intersection point of the first housing surface drawn by a straight line passing through the tip of the temperature sensor and the first housing surface along the second direction is defined as the third intersection point, and the intersection point of a straight line passing through the tip of the temperature sensor and the first housing surface, located in the second direction between the third intersection point and the temperature sensor, is defined as the fourth intersection point, The following equation 2 shows the relationship between the radius of curvature of the third curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the third intersection, and the second radius of curvature RWL, which is the largest radius of curvature of the fourth curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the fourth intersection, and the thickness T, and Of the following equation 3, which shows the relationship between the sum of the first radius of curvature RWS and the second radius of curvature RWL and the thickness T, A biological information measurement device that satisfies at least equations 1 and 2, or equation 3. Equation 1: First radius of curvature RWS / Thickness T ≤ 6 Equation 2: Second radius of curvature RWL / Thickness T ≤ 10 Equation 3: (First radius of curvature RWS + Second radius of curvature RWL) / Thickness T ≤ 17

4. A biological information measurement device having a first housing surface from which a temperature sensor targeting the user's torso is exposed, wherein the first housing surface is positioned facing the torso during measurement, When the measurement is performed, if the width in the first direction along the user's width direction is defined as the first width WS, and the width in the second direction intersecting the first direction and along the user's height direction is defined as the second width WL, When the intersection point of the first housing surface drawn by a straight line passing through the tip of the temperature sensor and the first housing surface along the first direction is defined as the first intersection point, and the intersection point of a straight line passing through the tip of the temperature sensor and the first housing surface, located between the first intersection point and the temperature sensor along the first direction, is defined as the second intersection point, the radius of curvature of the first curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the first intersection point, and the radius of curvature of the second curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the second intersection point, is defined as the first radius of curvature RWS. When the intersection point of the first housing surface drawn by a straight line passing through the tip of the temperature sensor and the first housing surface along the second direction is defined as the third intersection point, and the intersection point of a straight line passing through the tip of the temperature sensor and the first housing surface, located between the third intersection point and the temperature sensor along the second direction, is defined as the fourth intersection point, and the second radius of curvature RWL is defined as the maximum radius of curvature of the third curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the third intersection point, and the maximum radius of curvature of the fourth curve, which is the curve with the largest radius of curvature passing through the tip of the temperature sensor and the fourth intersection point, A biological information measuring device wherein both the first radius of curvature RWS and the second radius of curvature RWL are 100 mm or less, and the thickness T corresponding to the length including the tip of the temperature sensor in a third direction perpendicular to the first and second directions is 10 mm or more.

Images