公开(公告)号：US20220026460A1

公开(公告)日：2022-01-27

申请号：US17421913

申请日：2020-01-15

Applicant: KOA CORPORATION

Inventor： Yoji KOBAYASHI ,  Tomokazu IKENO ,  Yasuyuki KATASE

IPC: G01P5/26 ,  G01P5/20 ,  G01F1/66

Abstract: The visibility of light is improved. A flow rate sensor device includes a substrate, sensor elements electrically connected to the substrate, light emitting elements positioned in a rear part of the sensor elements and disposed on a surface of the substrate, and light-transmissive cases internally accommodating the light emitting elements between the light-transmissive cases and the substrate. The light-transmissive cases have light diffusion members projecting from ceiling sections toward the light emitting elements, the light diffusion members have light incident surfaces facing the light emitting elements and wall surfaces connecting the light incident surfaces and the ceiling sections, and at least a part of the wall surfaces has a tilting surface having a dimension between the opposing wall surfaces, the dimension gradually increasing from a side close to the light incident surface toward the ceiling section.

公开(公告)号：US20220011145A1

公开(公告)日：2022-01-13

申请号：US17276357

申请日：2019-09-19

Applicant: KOA CORPORATION

Inventor： Yasuyuki KATASE ,  Yoji KOBAYASHI

IPC: G01F1/696 ,  G01F1/684

Abstract: It is an object to provide a flow rate sensor device having improved sensor responsiveness compared with the prior art. The present invention is a flow rate sensor device including a sensor element that detects a flow rate; a unit body including a sensor unit in which the sensor element is mounted, and a case accommodating the unit body, wherein the sensor unit is supported away from a bottom surface of the case. In this way, the sensor unit is supported to float upward from the bottom surface of the case, and a space is provided between the sensor unit and the bottom surface. Therefore, heat caused in the sensor unit can be separated from outside, and good sensor responsiveness can be maintained.

公开(公告)号：US20220291029A1

公开(公告)日：2022-09-15

申请号：US17641681

申请日：2020-09-11

Applicant: KOA CORPORATION

Inventor： Koji UENOYAMA ,  Shigeo GOTOH ,  Yoji KOBAYASHI

IPC: G01F1/69 ,  G01F15/12 ,  G01F15/18

Abstract: An object is to provide a flow sensing device improved in weather resistance and insect resistance. A flow sensing device includes: a cover member; a cap member disposed below the cover member; a foreign-body intrusion prevention net surrounding a space between the cover member and the cap member; a light emitting element disposed in a housing space surrounded by the cover member, the cap member, and the foreign-body intrusion prevention net; and a sensing element disposed inside the foreign-body intrusion prevention net in the housing space, the sensing element including a thermosensitive resistive element.

公开(公告)号：US20220091058A1

公开(公告)日：2022-03-24

申请号：US17418000

申请日：2019-12-24

Applicant: KOA CORPORATION

Inventor： Junichi OTSUKA ,  Yoji KOBAYASHI

IPC: G01N27/04 ,  H01C17/22 ,  H01C17/28

Abstract: A sulfurization detection resistor makes it possible to detect a degree of sulfurization accurately and easily, and a manufacturing method for such sulfurization detection resistor. A sulfurization detection resistor includes an insulated substrate having a rectangular parallelepiped shape, a first front electrode and a second front electrode formed at both ends on a main surface of the insulated substrate, multiple sulfurization detecting conductors connected in parallel to the first front electrode, multiple resistive elements connected between the sulfurization detecting conductors and the second front electrode, and a protective film formed to partially cover the sulfurization detecting conductors and entirely cover the resistive elements. The sulfurization detecting conductors have their sulfurization detecting portions exposed out of the protective film, and different timings are set for these sulfurization detecting portions respectively to become disconnected depending on a cumulative amount of sulfurization.

公开(公告)号：US20190162757A1

公开(公告)日：2019-05-30

申请号：US16313366

申请日：2017-05-25

Applicant: KOA CORPORATION

Inventor： Soya MIYAJIMA ,  Ryo OSAWA ,  Yoji KOBAYASHI

IPC: G01R15/14 ,  H01C1/144 ,  H01C13/00 ,  G01R1/20 ,  G01R19/00

Abstract: Provided is a current measuring device for measuring current, including a conductor adapted to pass current therethrough, at least a pair of voltage sensing terminals arranged apart from each other on the conductor in the current flowing direction, and a substrate to which the voltage sensing terminals are connected. The substrate is long in the current flowing direction, and connection portion of the substrate that are connected to the voltage sensing terminals are arranged closer to one end side of the substrate in the lengthwise direction.