JP7582244B2

JP7582244B2 - Sensor Device

Info

Publication number: JP7582244B2
Application number: JP2022069655A
Authority: JP
Inventors: 健茨木; 宏軌村松; 直輝大串; 潔金川
Original assignee: Murata Manufacturing Co Ltd
Current assignee: Murata Manufacturing Co Ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2024-11-13
Anticipated expiration: 2042-04-20
Also published as: JP2023159749A

Description

本発明は、環境センサを備えるセンサ装置に関する。 The present invention relates to a sensor device equipped with an environmental sensor.

従来のセンサ装置に関する発明としては、例えば、特許文献１に記載のウェアラブル機器が知られている。ウェアラブル機器は、環境情報取得部を備えている。そして、ウェアラブル機器は、ヘルメットに取り付けられる。 As an example of a conventional invention relating to a sensor device, the wearable device described in Patent Document 1 is known. The wearable device includes an environmental information acquisition unit. The wearable device is attached to a helmet.

特開２０２０－１５３０２１号公報JP 2020-153021 A

ところで、特許文献１に記載のウェアラブル機器において、環境情報取得部の検知精度の向上を図りたいという要望がある。 However, there is a demand for improving the detection accuracy of the environmental information acquisition unit in the wearable device described in Patent Document 1.

そこで、本発明の目的は、環境センサの検知精度の向上を図ることができるセンサ装置を提供することである。 The object of the present invention is to provide a sensor device that can improve the detection accuracy of an environmental sensor.

本発明の一形態に係るセンサ装置は、
前後方向に並ぶ回路基板前主面及び回路基板後主面を有している回路基板と、
前記回路基板前主面又は前記回路基板後主面に実装され、かつ、前記センサ装置の周囲の環境を測定する環境センサと、
ブザーと、
前記回路基板、前記環境センサ及び前記ブザーを収容する筐体であって、前後方向に並ぶ筐体前主面及び筐体後主面、左右方向に並ぶ筐体左面及び筐体右面、並びに、上下方向に並ぶ筐体上面及び筐体下面を有する筐体と、
を備えており、
前記筐体左面又は前記筐体右面には、環境センサ用貫通孔が設けられており、
前記筐体下面には、ブザー用貫通孔が設けられており、
前記筐体左面に前記環境センサ用貫通孔が設けられている場合には、前記環境センサと前記筐体左面との距離は、前記環境センサと前記筐体右面との距離より短く、
前記筐体右面に前記環境センサ用貫通孔が設けられている場合には、前記環境センサと前記筐体右面との距離は、前記環境センサと前記筐体左面との距離より短く、
前記ブザーと前記筐体下面との距離は、前記ブザーと前記筐体上面との距離より短い。 A sensor device according to one aspect of the present invention includes:
a circuit board having a front main surface and a rear main surface aligned in a front-rear direction;
an environmental sensor mounted on the front main surface or the rear main surface of the circuit board and configured to measure an environment surrounding the sensor device;
Buzzer and
a housing that houses the circuit board, the environmental sensor, and the buzzer, the housing having a front main surface and a rear main surface aligned in a front-rear direction, a left side surface and a right side surface aligned in a left-right direction, and a top surface and a bottom surface aligned in a vertical direction;
Equipped with
A through hole for an environmental sensor is provided on the left side or the right side of the housing,
A through hole for a buzzer is provided on the bottom surface of the housing,
When the through hole for the environmental sensor is provided on the left side of the housing, the distance between the environmental sensor and the left side of the housing is shorter than the distance between the environmental sensor and the right side of the housing,
When the through hole for the environmental sensor is provided on the right side of the housing, the distance between the environmental sensor and the right side of the housing is shorter than the distance between the environmental sensor and the left side of the housing,
The distance between the buzzer and the bottom surface of the housing is shorter than the distance between the buzzer and the top surface of the housing.

本発明に係るセンサ装置によれば、環境センサの検知精度の向上を図ることができる。 The sensor device according to the present invention can improve the detection accuracy of the environmental sensor.

図１は、センサ装置１０及びヘルメット１００の斜視図である。FIG. 1 is a perspective view of a sensor device 10 and a helmet 100. 図２は、センサ装置１０の外観斜視図である。FIG. 2 is a perspective view of the external appearance of the sensor device 10. As shown in FIG. 図３は、回路基板１６及びバッテリ１８の斜視図である。FIG. 3 is a perspective view of the circuit board 16 and the battery 18.

（実施形態）
［センサ装置１０の構造］
以下に、センサ装置１０の構造について図面を参照しながら説明する。図１は、センサ装置１０及びヘルメット１００の斜視図である。図２は、センサ装置１０の外観斜視図である。図３は、回路基板１６及びバッテリ１８の斜視図である。 (Embodiment)
[Structure of sensor device 10]
The structure of the sensor device 10 will be described below with reference to the drawings. Fig. 1 is a perspective view of the sensor device 10 and a helmet 100. Fig. 2 is a perspective view of the exterior of the sensor device 10. Fig. 3 is a perspective view of a circuit board 16 and a battery 18.

本明細書において、方向を以下の様に定義する。回路基板１６の回路基板前主面ＳＦＦ及び回路基板後主面ＳＢＢが並ぶ方向を前後方向と定義する。前後方向に見て、回路基板１６の短辺が延びる方向を左右方向と定義する。前後方向に見て、回路基板１６の長辺が延びる方向を上下方向と定義する。前後方向、左右方向及び上下方向は、互いに直交している。また、前後方向に直交する方向をＸ軸方向と定義する。本実施形態では、Ｘ軸方向は、上下方向と一致している。 In this specification, directions are defined as follows. The direction in which the circuit board front principal surface SFF and the circuit board rear principal surface SBB of the circuit board 16 are aligned is defined as the front-rear direction. When viewed in the front-rear direction, the direction in which the short sides of the circuit board 16 extend is defined as the left-right direction. When viewed in the front-rear direction, the direction in which the long sides of the circuit board 16 extend is defined as the up-down direction. The front-rear direction, left-right direction, and up-down direction are mutually perpendicular. Furthermore, the direction perpendicular to the front-rear direction is defined as the X-axis direction. In this embodiment, the X-axis direction coincides with the up-down direction.

センサ装置１０は、温度及び湿度を測定するための装置である。また、センサ装置１０は、通信機能を有する。センサ装置１０は、図１に示すように、ヘルメット１００の後部に取り付けられる。ヘルメット１００を被る人間の上下方向、左右方向及び前後方向は、センサ装置１０の上下方向、前記左右方向及び前記前後方向とほぼ一致する。センサ装置１０は、図２及び図３に示すように、筐体１２、回路基板１６、バッテリ１８、環境センサ２０、ブザー２２、第１防水シート３０、第２防水シート３２、第１アンテナＡＮＴ１、第２アンテナＡＮＴ２及び第３アンテナＡＮＴ３を備えている。 The sensor device 10 is a device for measuring temperature and humidity. The sensor device 10 also has a communication function. As shown in FIG. 1, the sensor device 10 is attached to the rear of the helmet 100. The up-down, left-right, and front-to-back directions of a person wearing the helmet 100 are approximately the same as the up-down, left-right, and front-to-back directions of the sensor device 10. As shown in FIG. 2 and FIG. 3, the sensor device 10 includes a housing 12, a circuit board 16, a battery 18, an environmental sensor 20, a buzzer 22, a first waterproof sheet 30, a second waterproof sheet 32, a first antenna ANT1, a second antenna ANT2, and a third antenna ANT3.

回路基板１６は、前後方向に並ぶ回路基板前主面ＳＦＦ及び回路基板後主面ＳＢＢを有している。回路基板前主面ＳＦＦ及び回路基板後主面ＳＢＢは、長方形状を有している。回路基板前主面ＳＦＦ及び回路基板後主面ＳＢＢの長辺は、上下方向に延びている。回路基板前主面ＳＦＦ及び回路基板後主面ＳＢＢ及びの短辺は、左右方向に延びている。 The circuit board 16 has a circuit board front main surface SFF and a circuit board rear main surface SBB aligned in the front-to-rear direction. The circuit board front main surface SFF and the circuit board rear main surface SBB have a rectangular shape. The long sides of the circuit board front main surface SFF and the circuit board rear main surface SBB extend in the up-down direction. The short sides of the circuit board front main surface SFF and the circuit board rear main surface SBB extend in the left-to-right direction.

環境センサ２０は、回路基板後主面ＳＢＢに実装されている。本実施形態では、環境センサ２０は、回路基板後主面ＳＢＢの左辺の下部近傍に位置している。環境センサ２０は、センサ装置１０の周囲の環境を測定する。環境センサ２０は、例えば、温度センサや湿度センサである。 The environmental sensor 20 is mounted on the rear main surface SBB of the circuit board. In this embodiment, the environmental sensor 20 is located near the lower part of the left side of the rear main surface SBB of the circuit board. The environmental sensor 20 measures the environment around the sensor device 10. The environmental sensor 20 is, for example, a temperature sensor or a humidity sensor.

ブザー２２は、回路基板後主面ＳＢＢに実装されている。本実施形態では、ブザー２２は、回路基板後主面ＳＢＢの下辺の右端近傍に位置している。ブザー２２は、音を発する。ブザー２２は、例えば、環境センサ２０が測定した温度が所定温度以上である場合には、警告音を発する。 The buzzer 22 is mounted on the rear main surface SBB of the circuit board. In this embodiment, the buzzer 22 is located near the right end of the lower side of the rear main surface SBB of the circuit board. The buzzer 22 emits a sound. For example, the buzzer 22 emits a warning sound when the temperature measured by the environmental sensor 20 is equal to or higher than a predetermined temperature.

バッテリ１８は、直方体形状を有している。バッテリ１８は、回路基板１６より前に位置し、かつ、前後方向に見て、回路基板１６と重なっている金属体である。ただし、バッテリ１８は、回路基板１６の左辺近傍及び回路基板１６の上辺近傍と重なっていない。 The battery 18 has a rectangular parallelepiped shape. The battery 18 is a metal body that is located in front of the circuit board 16 and overlaps the circuit board 16 when viewed in the front-to-rear direction. However, the battery 18 does not overlap the vicinity of the left edge of the circuit board 16 or the vicinity of the top edge of the circuit board 16.

第１アンテナＡＮＴ１、第２アンテナＡＮＴ２及び第３アンテナＡＮＴ３は、図３に示すように、回路基板後主面ＳＢＢに設けられている。第１アンテナＡＮＴ１は、回路基板後主面ＳＢＢの上辺近傍に位置している。第２アンテナＡＮＴ２は、回路基板後主面ＳＢＢの左辺近傍に位置している。第３アンテナＡＮＴ３は、回路基板後主面ＳＢＢの左辺の下端近傍に位置している。また、環境センサ２０は、第１アンテナＡＮＴ１及び第２アンテナＡＮＴ２と第３アンテナＡＮＴ３との間に位置している。これにより、前後方向に見て、第１アンテナＡＮＴ１と第２アンテナＡＮＴ２とは隣り合っている。また、第１アンテナＡＮＴ１及び第２アンテナＡＮＴ２は、環境センサ２０より上（Ｘ軸の正方向）に位置している。第３アンテナＡＮＴ３は、環境センサ２０より下（Ｘ軸の負方向）に位置している。そして、前後方向に見て、第１アンテナＡＮＴ１、第２アンテナＡＮＴ２及び第３アンテナＡＮＴ３は、バッテリ１８（金属体）と重なっていない。 As shown in FIG. 3, the first antenna ANT1, the second antenna ANT2, and the third antenna ANT3 are provided on the rear main surface SBB of the circuit board. The first antenna ANT1 is located near the upper edge of the rear main surface SBB of the circuit board. The second antenna ANT2 is located near the left edge of the rear main surface SBB of the circuit board. The third antenna ANT3 is located near the lower end of the left edge of the rear main surface SBB of the circuit board. The environmental sensor 20 is located between the first antenna ANT1 and the second antenna ANT2 and the third antenna ANT3. As a result, the first antenna ANT1 and the second antenna ANT2 are adjacent to each other when viewed in the front-to-rear direction. The first antenna ANT1 and the second antenna ANT2 are located above the environmental sensor 20 (positive direction of the X-axis). The third antenna ANT3 is located below the environmental sensor 20 (negative direction of the X-axis). Furthermore, when viewed in the front-to-rear direction, the first antenna ANT1, the second antenna ANT2, and the third antenna ANT3 do not overlap the battery 18 (metal body).

第１アンテナＡＮＴ１は、ＧＰＳ（ＧｌｏｂａｌＰｏｓｉｔｉｏｎｉｎｇＳｙｓｔｅｍ）信号を受信するアンテナである。第２アンテナＡＮＴ２は、ＬＴＥ（ＬｏｎｇＴｅｒｍＥｖｏｌｕｔｉｏｎ）信号を送受信するアンテナである。第３アンテナＡＮＴ３は、Ｂｌｕｅｔｏｏｔｈ（登録商標）信号を送受信するアンテナである。図示しない制御部は、ＬＴＥ信号の送受信の時には、ＧＰＳ信号の受信を制御する。すなわち、ＬＴＥ信号の送受信とＧＰＳ信号の送受信とは独立していない。一方、図示しない制御部は、Ｂｌｕｅｔｏｏｔｈ（登録商標）信号の送受信の時には、ＧＰＳ信号の受信を制御しない。すなわち、Ｂｌｕｅｔｏｏｔｈ（登録商標）信号の送受信とＧＰＳ信号の受信とは独立している。 The first antenna ANT1 is an antenna that receives GPS (Global Positioning System) signals. The second antenna ANT2 is an antenna that transmits and receives LTE (Long Term Evolution) signals. The third antenna ANT3 is an antenna that transmits and receives Bluetooth (registered trademark) signals. The control unit (not shown) controls the reception of GPS signals when transmitting and receiving LTE signals. In other words, the transmission and reception of LTE signals and the transmission and reception of GPS signals are not independent. On the other hand, the control unit (not shown) does not control the reception of GPS signals when transmitting and receiving Bluetooth (registered trademark) signals. In other words, the transmission and reception of Bluetooth (registered trademark) signals and the reception of GPS signals are independent.

筐体１２は、図２に示すように、直方体状の箱である。従って、筐体１２は、前後方向に並ぶ筐体前主面ＳＦ及び筐体後主面ＳＢ、左右方向に並ぶ筐体左面ＳＬ及び筐体右面ＳＲ、並びに、上下方向に並ぶ筐体上面ＳＵ及び筐体下面ＳＤを有している。筐体１２は、回路基板１６、環境センサ２０、ブザー２２、第１アンテナＡＮＴ１、第２アンテナＡＮＴ２、第３アンテナＡＮＴ３及びバッテリ１８（金属体）を収容している。このような筐体１２は、筐体前部１２ａ及び筐体後部１２ｂを含んでいる。筐体前部１２ａは、筐体１２の前半分である。筐体後部１２ｂは、筐体１２の後半分である。 As shown in FIG. 2, the housing 12 is a rectangular box. Therefore, the housing 12 has a front main surface SF and a rear main surface SB aligned in the front-rear direction, a left side SL and a right side SR aligned in the left-right direction, and a top surface SU and a bottom surface SD aligned in the up-down direction. The housing 12 contains a circuit board 16, an environmental sensor 20, a buzzer 22, a first antenna ANT1, a second antenna ANT2, a third antenna ANT3, and a battery 18 (metal body). Such a housing 12 includes a front housing portion 12a and a rear housing portion 12b. The front housing portion 12a is the front half of the housing 12. The rear housing portion 12b is the rear half of the housing 12.

また、図２に示すように、筐体左面ＳＬには、環境センサ用貫通孔Ｈ１が設けられている。左右方向に見て、環境センサ２０の少なくとも一部分は、環境センサ用貫通孔Ｈ１と重なっている。更に、環境センサ２０は、環境センサ用貫通孔Ｈ１近傍に位置している。そこで、前記の通り、環境センサ２０は、回路基板後主面ＳＢＢの左辺の下部近傍に位置している。これにより、環境センサ２０と筐体左面ＳＬとの距離は、環境センサ２０と筐体右面ＳＲとの距離より短い。 As shown in FIG. 2, an environmental sensor through hole H1 is provided on the left side SL of the housing. When viewed in the left-right direction, at least a portion of the environmental sensor 20 overlaps with the environmental sensor through hole H1. Furthermore, the environmental sensor 20 is located near the environmental sensor through hole H1. As described above, the environmental sensor 20 is located near the lower part of the left side of the rear main surface SBB of the circuit board. As a result, the distance between the environmental sensor 20 and the left side SL of the housing is shorter than the distance between the environmental sensor 20 and the right side SR of the housing.

また、図２に示すように、筐体下面ＳＤには、ブザー用貫通孔Ｈ２が設けられている。上下方向に見て、ブザー２２の少なくとも一部分は、ブザー用貫通孔Ｈ２と重なっている。更に、ブザー２２は、ブザー用貫通孔Ｈ２の近傍に位置している。そこで、前記の通り、ブザー２２は、回路基板後主面ＳＢＢの下辺の右端近傍に位置している。これにより、ブザー２２と筐体下面ＳＤとの距離は、ブザー２２と筐体上面ＳＵとの距離より短い。 As shown in FIG. 2, a buzzer through hole H2 is provided on the bottom surface SD of the housing. When viewed in the vertical direction, at least a portion of the buzzer 22 overlaps with the buzzer through hole H2. Furthermore, the buzzer 22 is located near the buzzer through hole H2. As described above, the buzzer 22 is located near the right end of the lower side of the rear main surface SBB of the circuit board. As a result, the distance between the buzzer 22 and the bottom surface SD of the housing is shorter than the distance between the buzzer 22 and the top surface SU of the housing.

第１防水シート３０は、通気性を有し、かつ、環境センサ用貫通孔Ｈ１を塞いでいる。第２防水シート３２は、通気性を有し、かつ、ブザー用貫通孔Ｈ２を塞いでいる。 The first waterproof sheet 30 is breathable and blocks the through hole H1 for the environmental sensor. The second waterproof sheet 32 is breathable and blocks the through hole H2 for the buzzer.

［効果］
センサ装置１０によれば、環境センサ２０の検知精度の向上を図ることができる。より詳細には、環境センサ用貫通孔Ｈ１が筐体左面ＳＬに設けられ、ブザー用貫通孔Ｈ２が筐体右面ＳＲに設けられる場合がある。この場合、右方向に向かって強い風が吹くと、大量の空気が環境センサ用貫通孔Ｈ１を介して筐体１２に入り、大量の空気がブザー用貫通孔Ｈ２を介して筐体１２から出る。左方向に向かって強い風が吹くと、大量の空気がブザー用貫通孔Ｈ２を介して筐体１２に入り、大量の空気が環境センサ用貫通孔Ｈ１を介して筐体１２から出る。この場合、筐体１２を通過する空気の量が多すぎて、環境センサ２０がセンサ装置１０の周囲の環境を精度よく測定できない。 [effect]
According to the sensor device 10, the detection accuracy of the environmental sensor 20 can be improved. More specifically, the environmental sensor through hole H1 may be provided on the left side SL of the housing, and the buzzer through hole H2 may be provided on the right side SR of the housing. In this case, when a strong wind blows to the right, a large amount of air enters the housing 12 through the environmental sensor through hole H1, and a large amount of air exits the housing 12 through the buzzer through hole H2. When a strong wind blows to the left, a large amount of air enters the housing 12 through the buzzer through hole H2, and a large amount of air exits the housing 12 through the environmental sensor through hole H1. In this case, the amount of air passing through the housing 12 is too large, and the environmental sensor 20 cannot accurately measure the environment around the sensor device 10.

そこで、センサ装置１０では、環境センサ用貫通孔Ｈ１は、筐体左面ＳＬに設けられている。ブザー用貫通孔Ｈ２は、筐体下面ＳＤに設けられている。従って、筐体１２内において空気の流れの方向が変化する。そのため、筐体１２を通過する空気の量が適量に低減される。その結果、環境センサ２０がセンサ装置１０の周囲の環境を精度よく測定できる。 Therefore, in the sensor device 10, the through hole H1 for the environmental sensor is provided on the left side SL of the housing. The through hole H2 for the buzzer is provided on the bottom side SD of the housing. Therefore, the direction of the air flow changes within the housing 12. This reduces the amount of air passing through the housing 12 to an appropriate amount. As a result, the environmental sensor 20 can accurately measure the environment around the sensor device 10.

センサ装置１０によれば、以下の理由によっても、環境センサ２０の検知精度の向上を図ることができる。より詳細には、雨天時には、筐体１２の表面に水滴が付着する場合がある。このような水滴が環境センサ用貫通孔Ｈ１近傍に付着すると、環境センサ２０の検知精度が低下する。 The sensor device 10 can improve the detection accuracy of the environmental sensor 20 for the following reasons. More specifically, in rainy weather, water droplets may adhere to the surface of the housing 12. If such water droplets adhere to the vicinity of the environmental sensor through-hole H1, the detection accuracy of the environmental sensor 20 decreases.

そこで、環境センサ用貫通孔Ｈ１は、筐体左面ＳＬに設けられている。これにより、環境センサ用貫通孔Ｈ１近傍に付着している水滴は、重力により、筐体下面ＳＤに移動する。そして、筐体下面ＳＤには、ブザー用貫通孔Ｈ２が設けられている。そのため、ブザー２２が音を発すると、ブザー用貫通孔Ｈ２近傍が振動する。これにより、筐体下面ＳＤに付着している水滴が落下する。よって、センサ装置１０によれば、環境センサ２０の検知精度の向上を図ることができる。 The environmental sensor through hole H1 is therefore provided on the left side SL of the housing. As a result, water droplets adhering near the environmental sensor through hole H1 move to the bottom surface SD of the housing due to gravity. The bottom surface SD of the housing is then provided with a buzzer through hole H2. Therefore, when the buzzer 22 emits a sound, the area near the buzzer through hole H2 vibrates. This causes water droplets adhering to the bottom surface SD of the housing to fall. Therefore, the sensor device 10 can improve the detection accuracy of the environmental sensor 20.

また、第１防水シート３０及び第２防水シート３２は、ブザーが発する音により振動する。これにより、第１防水シート３０及び第２防水シート３２に付着した水滴が落下する。更に、環境センサ用貫通孔Ｈ１及びブザー用貫通孔Ｈ２が設けられているので、筐体１２内の空気の流動性が高くなる。その結果、環境センサ２０の検知精度が向上する。 The first waterproof sheet 30 and the second waterproof sheet 32 also vibrate due to the sound emitted by the buzzer. This causes water droplets adhering to the first waterproof sheet 30 and the second waterproof sheet 32 to fall. Furthermore, since the through hole H1 for the environmental sensor and the through hole H2 for the buzzer are provided, the air flow within the housing 12 is increased. As a result, the detection accuracy of the environmental sensor 20 is improved.

センサ装置１０によれば、ブザー用貫通孔Ｈ２は、筐体下面ＳＤに設けられている。これにより、ブザー用貫通孔Ｈ２は、ユーザの両耳の中間近傍に位置するようになる。その結果、ユーザは、ブザー２２が発した警報音を両耳で聞くことができる。 According to the sensor device 10, the buzzer through hole H2 is provided on the underside SD of the housing. This positions the buzzer through hole H2 near the middle between the user's ears. As a result, the user can hear the alarm sound emitted by the buzzer 22 with both ears.

センサ装置１０によれば、第１アンテナＡＮＴ１、第２アンテナＡＮＴ２及び第３アンテナＡＮＴ３の通信性能の低下が抑制される。より詳細には、バッテリ１８は、金属体であるので、電磁波は、バッテリ１８を通過しにくい。そこで、前後方向に見て、第１アンテナＡＮＴ１、第２アンテナＡＮＴ２及び第３アンテナＡＮＴ３は、バッテリ１８と重なっていない。これにより、第１アンテナＡＮＴ１、第２アンテナＡＮＴ２及び第３アンテナＡＮＴ３の通信性能の低下が抑制される。 The sensor device 10 suppresses the deterioration of the communication performance of the first antenna ANT1, the second antenna ANT2, and the third antenna ANT3. More specifically, since the battery 18 is a metal body, electromagnetic waves do not easily pass through the battery 18. Therefore, when viewed in the front-to-rear direction, the first antenna ANT1, the second antenna ANT2, and the third antenna ANT3 do not overlap with the battery 18. This suppresses the deterioration of the communication performance of the first antenna ANT1, the second antenna ANT2, and the third antenna ANT3.

センサ装置１０によれば、センサ装置１０の小型化が図られる。より詳細には、第１アンテナＡＮＴ１は、ＧＰＳ（ＧｌｏｂａｌＰｏｓｉｔｉｏｎｉｎｇＳｙｓｔｅｍ）信号を受信するアンテナである。第２アンテナＡＮＴ２は、ＬＴＥ（ＬｏｎｇＴｅｒｍＥｖｏｌｕｔｉｏｎ）信号を送受信するアンテナである。第３アンテナＡＮＴ３は、Ｂｌｕｅｔｏｏｔｈ（登録商標）信号を送受信するアンテナである。この場合、ＬＴＥ信号の送受信とＧＰＳ信号の送受信とは独立していない。従って、第１アンテナＡＮＴ１と第２アンテナＡＮＴ２とが近づいても、通信品質が低下しにくい。Ｂｌｕｅｔｏｏｔｈ（登録商標）信号の送受信とのＧＰＳ信号の受信とは独立している。従って、第２アンテナＡＮＴ２と第３アンテナＡＮＴ３とが近づくと、通信品質が低下しやすい。 The sensor device 10 can be made smaller. More specifically, the first antenna ANT1 is an antenna that receives GPS (Global Positioning System) signals. The second antenna ANT2 is an antenna that transmits and receives LTE (Long Term Evolution) signals. The third antenna ANT3 is an antenna that transmits and receives Bluetooth (registered trademark) signals. In this case, the transmission and reception of LTE signals and the transmission and reception of GPS signals are not independent. Therefore, even if the first antenna ANT1 and the second antenna ANT2 approach each other, the communication quality is unlikely to deteriorate. The transmission and reception of Bluetooth (registered trademark) signals are independent from the reception of GPS signals. Therefore, when the second antenna ANT2 and the third antenna ANT3 approach each other, the communication quality is likely to deteriorate.

そこで、前後方向に見て、第１アンテナＡＮＴ１と第２アンテナＡＮＴ２とは隣り合っている。また、第１アンテナＡＮＴ１及び第２アンテナＡＮＴ２は、環境センサ２０より上（Ｘ軸の正方向）に位置している。第３アンテナＡＮＴ３は、環境センサ２０より下（Ｘ軸の負方向）に位置している。すなわち、環境センサ２０は、第１アンテナＡＮＴ１及び第２アンテナＡＮＴ２と第３アンテナＡＮＴ３との間に位置している。これにより、センサ装置１０によれば、通信品質を維持しつつ、第１アンテナＡＮＴ１と第２アンテナＡＮＴ２と第３アンテナＡＮＴ３とを狭いスペースに配置することができる。 Therefore, when viewed in the front-to-rear direction, the first antenna ANT1 and the second antenna ANT2 are adjacent to each other. Furthermore, the first antenna ANT1 and the second antenna ANT2 are located above the environmental sensor 20 (positive direction of the X-axis). The third antenna ANT3 is located below the environmental sensor 20 (negative direction of the X-axis). In other words, the environmental sensor 20 is located between the first antenna ANT1 and the second antenna ANT2 and the third antenna ANT3. As a result, according to the sensor device 10, the first antenna ANT1, the second antenna ANT2, and the third antenna ANT3 can be arranged in a narrow space while maintaining communication quality.

（その他の実施形態）
本発明に係るセンサ装置は、センサ装置１０に限らず、その要旨の範囲内において変更可能である。 Other Embodiments
The sensor device according to the present invention is not limited to the sensor device 10, and can be modified within the scope of the present invention.

なお、環境センサ用貫通孔Ｈ１は、筐体左面ＳＬに設けられなくてもよい。環境センサ用貫通孔Ｈ１は、筐体右面ＳＲに設けられてもよい。ただし、筐体左面ＳＬに環境センサ用貫通孔Ｈ１が設けられている場合には、環境センサ２０と筐体左面ＳＬとの距離は、環境センサ２０と筐体右面ＳＲとの距離より短い。一方、筐体右面ＳＲに環境センサ用貫通孔Ｈ１が設けられている場合には、環境センサ２０と筐体右面ＳＲとの距離は、環境センサ２０と筐体左面ＳＬとの距離より短い。 The through hole H1 for the environmental sensor does not have to be provided on the left side SL of the housing. The through hole H1 for the environmental sensor may be provided on the right side SR of the housing. However, when the through hole H1 for the environmental sensor is provided on the left side SL of the housing, the distance between the environmental sensor 20 and the left side SL of the housing is shorter than the distance between the environmental sensor 20 and the right side SR of the housing. On the other hand, when the through hole H1 for the environmental sensor is provided on the right side SR of the housing, the distance between the environmental sensor 20 and the right side SR of the housing is shorter than the distance between the environmental sensor 20 and the left side SL of the housing.

なお、環境センサ２０は、回路基板前主面ＳＦＦに実装されてもよい。 The environmental sensor 20 may also be mounted on the front main surface (SFF) of the circuit board.

なお、バッテリ１８（金属体）は、回路基板１６より後に位置してもよい。 The battery 18 (metal body) may be located behind the circuit board 16.

なお、第１アンテナＡＮＴ１、第２アンテナＡＮＴ２及び第３アンテナＡＮＴ３は、回路基板前主面ＳＦＦに設けられてもよい。ただし、第１アンテナＡＮＴ１、第２アンテナＡＮＴ２及び第３アンテナＡＮＴ３は、環境センサ２０と同じ面に設けられる。 The first antenna ANT1, the second antenna ANT2, and the third antenna ANT3 may be provided on the front main surface SFF of the circuit board. However, the first antenna ANT1, the second antenna ANT2, and the third antenna ANT3 are provided on the same surface as the environmental sensor 20.

なお、Ｘ軸方向は、上下方向と一致していなくてもよい。 Note that the X-axis direction does not have to coincide with the up-down direction.

なお、２つの金属体が、回路基板１６の前及び後に配置されてもよい。この場合、第１アンテナＡＮＴ１、第２アンテナＡＮＴ２及び第３アンテナＡＮＴ３は、前後方向に見て、２つの金属体に重ならない。 The two metal bodies may be disposed in front and behind the circuit board 16. In this case, the first antenna ANT1, the second antenna ANT2, and the third antenna ANT3 do not overlap the two metal bodies when viewed in the front-to-rear direction.

なお、バッテリ１８以外の金属体が配置されてもよい。バッテリ１８以外の金属体は、例えば、金属製の筐体である。 Note that a metal body other than the battery 18 may be disposed. The metal body other than the battery 18 may be, for example, a metal housing.

本発明は、以下の構造を有する。 The present invention has the following structure:

（１）
センサ装置であって、
前後方向に並ぶ回路基板前主面及び回路基板後主面を有している回路基板と、
前記回路基板前主面又は前記回路基板後主面に実装され、かつ、前記センサ装置の周囲の環境を測定する環境センサと、
ブザーと、
前記回路基板、前記環境センサ及び前記ブザーを収容する筐体であって、前後方向に並ぶ筐体前主面及び筐体後主面、左右方向に並ぶ筐体左面及び筐体右面、並びに、上下方向に並ぶ筐体上面及び筐体下面を有する筐体と、
を備えており、
前記筐体左面又は前記筐体右面には、環境センサ用貫通孔が設けられており、
前記筐体下面には、ブザー用貫通孔が設けられており、
前記筐体左面に前記環境センサ用貫通孔が設けられている場合には、前記環境センサと前記筐体左面との距離は、前記環境センサと前記筐体右面との距離より短く、
前記筐体右面に前記環境センサ用貫通孔が設けられている場合には、前記環境センサと前記筐体右面との距離は、前記環境センサと前記筐体左面との距離より短く、
前記ブザーと前記筐体下面との距離は、前記ブザーと前記筐体上面との距離より短い、
センサ装置。
（２）
前記左右方向に見て、前記環境センサの少なくとも一部分は、前記環境センサ用貫通孔と重なっている、
（１）に記載のセンサ装置。
（３）
前記上下方向に見て、前記ブザーの少なくとも一部分は、前記ブザー用貫通孔と重なっている、
（１）又は（２）に記載のセンサ装置。
（４）
前記センサ装置は、
通気性を有し、かつ、前記環境センサ用貫通孔を塞ぐ第１防水シートを、
更に備えている、
（１）ないし（３）のいずれかに記載のセンサ装置。
（５）
前記センサ装置は、
通気性を有し、かつ、前記ブザー用貫通孔を塞ぐ第２防水シートを、
更に備えている、
（１）ないし（４）のいずれかに記載のセンサ装置。
（６）
前記センサ装置は、
前記回路基板より前又は後に位置し、かつ、前後方向に見て、前記回路基板と重なっている金属体と、
前記回路基板前主面又は前記回路基板後主面に設けられている第１アンテナ、第２アンテナ及び第３アンテナと、
を備えており、
前記筐体は、前記第１アンテナ、前記第２アンテナ、前記第３アンテナ及び前記金属体を収容しており、
前後方向に見て、前記第１アンテナと前記第２アンテナとは隣り合っており、
前後方向に直交する方向をＸ軸方向と定義し、
前記第１アンテナ及び前記第２アンテナは、前記環境センサよりＸ軸の正方向に位置しており、
前記第３アンテナは、前記環境センサより前記Ｘ軸の負方向に位置しており、
前後方向に見て、前記第１アンテナ、前記第２アンテナ及び前記第３アンテナは、前記金属体と重なっていない、
（１）ないし（５）のいずれかに記載のセンサ装置。
（７）
前記第１アンテナは、ＧＰＳ（ＧｌｏｂａｌＰｏｓｉｔｉｏｎｉｎｇＳｙｓｔｅｍ）信号を受信するアンテナであり、
前記第２アンテナは、ＬＴＥ（ＬｏｎｇＴｅｒｍＥｖｏｌｕｔｉｏｎ）信号を送受信するアンテナであり、
前記第３アンテナは、Ｂｌｕｅｔｏｏｔｈ（登録商標）信号を送受信するアンテナである、
（６）に記載のセンサ装置。 (1)
A sensor device,
a circuit board having a front main surface and a rear main surface aligned in a front-rear direction;
an environmental sensor mounted on the front main surface or the rear main surface of the circuit board and configured to measure an environment surrounding the sensor device;
Buzzer and
a housing that houses the circuit board, the environmental sensor, and the buzzer, the housing having a front main surface and a rear main surface aligned in a front-rear direction, a left side surface and a right side surface aligned in a left-right direction, and a top surface and a bottom surface aligned in a vertical direction;
Equipped with
A through hole for an environmental sensor is provided on the left side or the right side of the housing,
A through hole for a buzzer is provided on the bottom surface of the housing,
When the through hole for the environmental sensor is provided on the left side of the housing, the distance between the environmental sensor and the left side of the housing is shorter than the distance between the environmental sensor and the right side of the housing,
When the through hole for the environmental sensor is provided on the right side of the housing, the distance between the environmental sensor and the right side of the housing is shorter than the distance between the environmental sensor and the left side of the housing,
The distance between the buzzer and the bottom surface of the housing is shorter than the distance between the buzzer and the top surface of the housing.
Sensor device.
(2)
When viewed in the left-right direction, at least a portion of the environmental sensor overlaps with the environmental sensor through hole.
A sensor device as described in (1).
(3)
When viewed in the up-down direction, at least a portion of the buzzer overlaps with the buzzer through hole.
A sensor device according to (1) or (2).
(4)
The sensor device includes:
A first waterproof sheet having breathability and blocking the through hole for the environmental sensor,
In addition,
A sensor device according to any one of (1) to (3).
(5)
The sensor device includes:
A second waterproof sheet that has breathability and closes the buzzer through hole,
In addition,
A sensor device according to any one of (1) to (4).
(6)
The sensor device includes:
a metal body located in front of or behind the circuit board and overlapping with the circuit board when viewed in the front-rear direction;
a first antenna, a second antenna, and a third antenna provided on the front main surface of the circuit board or the rear main surface of the circuit board;
Equipped with
the housing accommodates the first antenna, the second antenna, the third antenna, and the metal body,
When viewed in a front-rear direction, the first antenna and the second antenna are adjacent to each other,
The direction perpendicular to the front-rear direction is defined as the X-axis direction.
the first antenna and the second antenna are located in a positive direction of the X-axis from the environmental sensor,
the third antenna is located in a negative direction of the X-axis from the environmental sensor;
When viewed in the front-rear direction, the first antenna, the second antenna, and the third antenna do not overlap with the metal body.
A sensor device according to any one of (1) to (5).
(7)
The first antenna is an antenna for receiving a GPS (Global Positioning System) signal,
The second antenna is an antenna for transmitting and receiving LTE (Long Term Evolution) signals,
The third antenna is an antenna for transmitting and receiving Bluetooth (registered trademark) signals.
A sensor device as described in (6).

１０：センサ装置
１２：筐体
１２ａ：筐体前部
１２ｂ：筐体後部
１６：回路基板
１８：バッテリ
２０：環境センサ
２２：ブザー
１００：ヘルメット
ＡＮＴ１：第１アンテナ
ＡＮＴ２：第２アンテナ
ＡＮＴ３：第３アンテナ
Ｈ１：環境センサ用貫通孔
Ｈ２：ブザー用貫通孔
ＳＢ：筐体後主面
ＳＢＢ：回路基板後主面
ＳＤ：筐体下面
ＳＦ：筐体前主面
ＳＦＦ：回路基板前主面
ＳＬ：筐体左面
ＳＲ：筐体右面
ＳＵ：筐体上面 10: Sensor device 12: Housing 12a: Housing front part 12b: Housing rear part 16: Circuit board 18: Battery 20: Environmental sensor 22: Buzzer 100: Helmet ANT1: First antenna ANT2: Second antenna ANT3: Third antenna H1: Through hole for environmental sensor H2: Through hole for buzzer SB: Rear main surface of housing SBB: Rear main surface of circuit board SD: Bottom surface of housing SF: Front main surface of housing SFF: Front main surface of circuit board SL: Left surface of housing SR: Right surface of housing SU: Top surface of housing

Claims

A sensor device,
a circuit board having a front main surface and a rear main surface aligned in a front-rear direction;
an environmental sensor mounted on the front main surface or the rear main surface of the circuit board and configured to measure an environment surrounding the sensor device;
Buzzer and
a housing that houses the circuit board, the environmental sensor, and the buzzer, the housing having a front main surface and a rear main surface aligned in a front-rear direction, a left side surface and a right side surface aligned in a left-right direction, and a top surface and a bottom surface aligned in a vertical direction;
It is equipped with
A through hole for an environmental sensor is provided on the left side or the right side of the housing,
A through hole for a buzzer is provided on the bottom surface of the housing,
When the through hole for the environmental sensor is provided on the left side of the housing, the distance between the environmental sensor and the left side of the housing is shorter than the distance between the environmental sensor and the right side of the housing,
When the through hole for the environmental sensor is provided on the right side of the housing, the distance between the environmental sensor and the right side of the housing is shorter than the distance between the environmental sensor and the left side of the housing,
The distance between the buzzer and the bottom surface of the housing is shorter than the distance between the buzzer and the top surface of the housing.
Sensor device.

When viewed in the left-right direction, at least a portion of the environmental sensor overlaps with the environmental sensor through hole.
The sensor device according to claim 1 .

When viewed in the up-down direction, at least a portion of the buzzer overlaps with the buzzer through hole.
The sensor device according to claim 1 or 2.

The sensor device includes:
A first waterproof sheet having breathability and blocking the through hole for the environmental sensor,
In addition,
The sensor device according to claim 1 or 2.

The sensor device includes:
A second waterproof sheet that has breathability and closes the buzzer through hole,
In addition,
The sensor device according to claim 1 or 2.

The sensor device includes:
a metal body located in front of or behind the circuit board and overlapping with the circuit board when viewed in the front-rear direction;
a first antenna, a second antenna, and a third antenna provided on the front main surface of the circuit board or the rear main surface of the circuit board;
It is equipped with
the housing accommodates the first antenna, the second antenna, the third antenna, and the metal body,
When viewed in a front-rear direction, the first antenna and the second antenna are adjacent to each other,
The direction perpendicular to the front-rear direction is defined as the X-axis direction.
the first antenna and the second antenna are located in a positive direction of the X-axis from the environmental sensor,
the third antenna is located in a negative direction of the X-axis from the environmental sensor;
When viewed in the front-rear direction, the first antenna, the second antenna, and the third antenna do not overlap with the metal body.
The sensor device according to claim 1 or 2.

The first antenna is an antenna for receiving a GPS (Global Positioning System) signal,
The second antenna is an antenna for transmitting and receiving LTE (Long Term Evolution) signals,
The third antenna is an antenna for transmitting and receiving Bluetooth (registered trademark) signals.
The sensor device according to claim 6.