Patents Assigned to Nippon Seiki Co., Ltd.
  • Patent number: 10807472
    Abstract: A vehicular display device includes: a display board for displaying a scale; a liquid crystal display panel including an image display surface for displaying an image, and having an overlapping region in which the image display surface overlaps the display board further rearward than the display board; a light source for illuminating the liquid crystal display panel; and a first light guide body for receiving light from the light source via the liquid crystal display panel and emitting the light. The first light guide body includes: a light receiving part disposed between the overlapping region of the image display surface and the display board, for receiving the light from the light source via the liquid crystal display panel; and a light-emitting part exposed outwardly from the display board as viewed by a viewer, for emitting light from the first light guide body that is received by the light-receiving part.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: October 20, 2020
    Assignees: NIPPON SEIKI CO., LTD., SUBARU CORPORATION
    Inventors: Takanori Shimizu, Kazufumi Suzuki, Ryouta Fujiwara, Yuka Hayakawa, Ryousuke Kakimaru, Shouma Nakata, Yohei Okamoto, Yuichi Nozaki
  • Patent number: 10795157
    Abstract: Provided is a display device for a vehicle that can rapidly execute preparation completion for display of vehicle information. The display device for a vehicle is provided with a processing unit, a display, and a rotational drive unit that can rotate a reflector on a prescribed axis. The processing unit includes an estimating unit that estimates planned start of the vehicle by a crew, and when the vehicle is planned to be started, the angle of rotation of the rotational drive unit moves from an initial angle corresponding to an initial position (position of point of origin) of the reflector to a first intermediate angle (first stopping position) between the initial angle and a final angle corresponding to the normal operating position of the reflector. After the vehicle has been actually started, the angle of rotation of the rotational drive unit moves to a final angle from the first intermediate angle.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: October 6, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Kazuki Honma, Yuki Masuya
  • Patent number: 10788668
    Abstract: There is provided a display device which has a shutter capable of being accommodated in a compact space and a simplified operation mechanism, and can be reduced in size. The display device of the present invention is characterized by including: a housing having a top plate with an opening and a pair of opposed side plates; a drive member which is provided on at least one of the pair of side plates and slidable relative to the at least one of the side plates, the drive member having a cam structure and a drive rack gear; a display member that is engaged with the cam structure and movable through the opening; and a movable shutter capable of closing the opening along the top plate by a drive transfer unit that is engaged with the drive rack gear.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: September 29, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventor: Kazuhiro Saitou
  • Patent number: 10788353
    Abstract: To provide a liquid-surface detection device having a small parts count, whereby electrolytic corrosion can be suppressed. A liquid-surface detection device has a detection part for detecting magnetism, a plurality of terminals connected by one end thereof to the detection part, a first retaining body for retaining the terminals and rotatably supporting a magnetic part, a second retaining body attached to the first retaining body, and electroconductive parts retained by the second retaining body and connected to other ends of the terminals. The first retaining body has substantially U-shaped surrounding parts for surrounding other ends of the plurality of terminals, respectively. The second retaining body has dividing parts overlapping between the surrounding parts.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: September 29, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventor: Hisahito Ichisawa
  • Patent number: 10788738
    Abstract: A head-up display device is provided with: a combined light output unit which outputs combined light obtained by combining light emitted by a plurality of light sources which emit light having different wavelengths; and a heat dissipator which dissipates heat emitted by the light sources. The head-up display device displays a virtual image by means of the combined light. The plurality of light sources include a first light source which operates in a first operation guaranteed temperature band, and second light sources which operate in a second operation guaranteed temperature band having an upper limit higher than that of the first operation guaranteed temperature band. The first light source is provided in a location on the heat dissipator having a higher heat dissipation characteristic than the locations of the second light sources.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: September 29, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventor: Shuichi Yamaya
  • Patent number: 10788666
    Abstract: A head-up display device includes: a plurality of light sources arrayed in matrix in a Y-direction and a Z-direction; and a lens unit in which a convex lens portion for collecting radiant light radiated from the light sources is formed opposing each light source. The plurality of light sources are arranged at an interval A in a Z-direction and at an interval B, which is smaller than the interval A, in the Y-direction. The lens unit has a first connection portion and second connection portions formed at boundaries of the adjacent convex lens portions. The first connection portion extends in the Y-direction, and the second connection portions extend in the Z-direction.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: September 29, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Hiroteru Haruyama, Daichi Kanetoku
  • Publication number: 20200300675
    Abstract: Provided is a gauge in which it is possible to suppress reductions in external appearance due to imperfections in an anti-reflection part. This gauge is provided with: a display part for displaying a measured quantity; a translucent plate positioned on the front-surface side of the display part, the translucent plate allowing visual confirmation of the display part through the translucent plate; a clamp part for clamping an end part of the translucent plate; and an anti-reflection part provided to the display part side surface of the translucent plate the anti-reflection part having a plurality of conical protrusions arrayed at a pitch equal to or less than the wavelength of visible light. The anti-reflection part is provided away from the end part of the translucent plate, and is provided so as not to contact the clamp part.
    Type: Application
    Filed: April 13, 2017
    Publication date: September 24, 2020
    Applicants: NIPPON SEIKI CO., LTD., NIPPON SEIKI CO., LTD.
    Inventor: Naoaki HAYAKAWA
  • Patent number: 10782521
    Abstract: The present invention makes it possible to reduce a difference in resolution between respective regions of a virtual image while reducing distortion of an image. A translucent screen is disposed to be inclined with respect to an optical axis of projection light such that a difference between a first optical path length to a first reflection part of the display light emitted from a first end far from display light reflected toward a second reflection part by the first reflection part, and a second optical path length of display light emitted from a second end closer to reflected toward the second reflection part by the first reflection part than the first end becomes smaller.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: September 22, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Takeru Kawai, Yuta Kikuchi
  • Patent number: 10782555
    Abstract: A liquid crystal panel is switched between a transmission state and a reflection state. The liquid crystal panel includes an absorption type polarizing plate on one side of a liquid crystal element, and a reflection type polarizing plate on the other side thereof. In the reflection state, light incident from the absorption type polarizing plate and transmitted through the liquid crystal element has a polarization axis along the reflection axis of the reflection type polarizing plate, and is reflected by the reflection type polarizing plate. In the transmission state, the light incident from the absorption type polarizing plate and transmitted through the liquid crystal element has a polarization axis along the transmission axis orthogonal to the reflection axis, and is transmitted through the reflection type polarizing plate. The absorption type polarizing plate has an average polarization degree of 60-80% inclusive at wavelengths of 450-650 nm.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: September 22, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Ayuko Numamae, Kazuya Ootaki
  • Publication number: 20200296494
    Abstract: An electronic component module including a fixing part, a function part housed in, or fixed to, the fixing part, at least one connection line, and at least one protrusion on the function part or the fixing part. The fixing part includes an abutting face, an outer face extending from an end of the abutting face in a direction including a component of a first direction, and an edge line along which the abutting and outer faces meet. The connection line is flexible, electrically connected to the function part, positioned on a second direction side relative to the abutting face, and configured to be led out in a third direction from an inside to an outside relative to the edge line. The protrusion extends at least partly in the third direction and is positioned at least partly on the first direction side relative to the connection line in the led-out state.
    Type: Application
    Filed: February 27, 2020
    Publication date: September 17, 2020
    Applicants: NIPPON SEIKI CO., LTD., HOSIDEN CORPORATION
    Inventors: Toshiaki Suzuki, Tsuyoshi Kawaguchi, Masahide Suzuki, Kota Onoyama, Jun Miyajima
  • Patent number: 10761323
    Abstract: There is provided a lens array and an lens array capable of suitably preventing irregular brightness without reducing resolution. A microlens array 20 of a screen 2 includes upper-level microlenses 21H and lower-level microlenses 21L which are formed on the incidence surface of the screen 2, which have the same effective diameter, and which have a structure that generates an optical path length difference ? in transmission light. By disposing the upper-level microlenses 21H and the lower-level microlenses 21L at an interval based on the effective diameter, the basic periodic structure of a lens period PL is formed. Further, the upper-level microlenses 21H and the lower-level microlenses 21L form a basic block comprising a combination of the lenses having a structure that generates the optical path length difference. A concave-and-convex period PC based on the basic block is an integer multiple of the lens period PL.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: September 1, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Katsuhiro Koike, Takayuki Nomoto
  • Publication number: 20200257114
    Abstract: The purpose of the present invention is to provide a head-up display which does not easily cause a feeling of strangeness in the way in which a virtual image disappears with the movement of a point of view while achieving improved light use efficiency.
    Type: Application
    Filed: November 11, 2016
    Publication date: August 13, 2020
    Applicant: NIPPON SEIKI CO., LTD.
    Inventors: Shun SEKIYA, Yuichi TAKAHASHI
  • Patent number: 10727891
    Abstract: A control substrate is provided with a first electric current limiting resistor and a first voltage limiting Zener diode which are connected to a power supply line, and second electric current limiting resistors and second voltage limiting Zener diodes which are connected to communication lines. Of an electronic circuit configured from the control substrate and a sub-substrate, a first area connected to one side of the power supply line and the communication lines and a second area connected to the other side thereof with reference to the first and second electric current limiting resistors and the first and second voltage limiting Zener diodes are arranged spaced apart from each other by a predetermined interval so that the areas are considered separate areas in terms of intrinsically safe explosion-proof requirements.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: July 28, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventor: Satoshi Ota
  • Patent number: 10725285
    Abstract: Provided is a display device capable of reliably moving a micromirror to a parking position when operation is stopped. A head-up display device drives a DMD element on the basis of electric power from a battery power supply. The head-up display device is provided with: a DMD controller for performing control of the DMD element on the basis of the electric power from the battery power supply; a voltage monitoring circuit for monitoring the voltage of the battery power supply; and a backup power supply for supplying power to the DMD controller as a backup of the battery power supply. When the voltage of the battery power supply which has been monitored by the voltage monitoring circuit falls to or below a threshold value, the DMD controller moves the DMD element to the parking position on the basis of the electric power from the backup power supply.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: July 28, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Kazuki Honma, Makoto Hada
  • Patent number: 10712559
    Abstract: A display device includes: an illumination unit having a light source unit capable of emitting light; an illumination control unit controlling the illumination unit; a display element capable of forming an image with illumination light from the illumination unit; a display control unit controlling the display element; a control unit controlling the display control unit and the illumination control unit based on a video signal; and a first circuit board on which the display element and the display control unit are mounted. When the display element and the display control unit are mounted on the surface of the first circuit board, a first signal for controlling pixels of the display element is arranged only on the front surface of the first circuit board, while a main portion of a second signal for setting control regarding the pixels is arranged on the rear surface of the first circuit board.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: July 14, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Yuichi Fukushima, Yasuhiro Yamakawa
  • Patent number: 10712557
    Abstract: The present invention improves slidability between a moving part and a support member that supports the moving part. A head-up display device includes: a display that emits display light; a moving part on which a first sliding surface is formed; and a support member on which a second sliding surface that comes into contact with the first sliding surface is formed. The support member movably supports the moving part. The head-up display device displays vehicle information as virtual images from the display light. Linear protrusions and recesses are formed on the first sliding surface and/or the second sliding surface following the trajectory along which the moving part moves.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: July 14, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Ryoichi Ishikawa, Takanori Shigeno, Hiroyuki Furusawa, Mitsuaki Tsuboya
  • Patent number: 10701783
    Abstract: A display device includes: an illuminating unit having a light source unit emitting light; an illumination control unit controlling the illuminating unit; a display element forming an image using illuminating light from the illuminating unit; a display control unit controlling the display element; a control unit controlling the illumination control unit and the display control unit based on a video signal; and a detection unit detecting the output intensity of the light source unit at that time. The control unit stores a control value corresponding to a target output intensity of the light source unit, and based on a difference between the to target output intensity and the output intensity at that time, the control unit determines a correction value for correcting the control value, and based on a control correction value obtained by correcting the control value using the correction value, the illumination control unit drives the light source unit.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: June 30, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Yukie Umezawa, Tamito Kawate
  • Publication number: 20200152157
    Abstract: An image processing unit to be applied to a display controller includes a generation unit for generating a display image including a display element corresponding to a virtual image viewed by a user. The generation unit determines the planar shape of the display element such that a size of the virtual image viewed by the user changes on the basis of the viewpoint height of the user. Specifically, when the viewpoint height changes from a reference position to a position Normal or Short lower than the reference position, the generation unit determines the planar shape of an enlarged display element. The planar shapes of the virtual image in a real space viewed by the user may extend in the front direction and the rear direction.
    Type: Application
    Filed: June 27, 2018
    Publication date: May 14, 2020
    Applicant: NIPPON SEIKI CO., LTD.
    Inventors: Makoto HADA, Yuki MASUYA
  • Publication number: 20200150432
    Abstract: The present invention presents information while maintaining the visibility of a foreground. An object selection unit 21 selects a specific real object 300 from with a foreground 200, a display position adjustment unit 22 controls a position of an augmented real image V so that the augmented real image V adjoins or at least partly overlaps the real object 300 selected by the object selection unit 21, and an image processing unit 23 makes an adjustment so that a color of a portion of the augmented real image V visible to a user is the same as or similar to the color of the real object 300 as acquired by a color information acquisition unit 30.
    Type: Application
    Filed: July 26, 2018
    Publication date: May 14, 2020
    Applicant: NIPPON SEIKI CO., LTD.
    Inventor: Tadashige MAKINO
  • Patent number: 10634911
    Abstract: A mirror unit includes a concave mirror having a mirror surface reflecting light, and a holder holding the concave mirror. The concave mirror includes first to third positioning protruding portions. The holder includes: a first holder-side positioning portion defining, through contact with the first positioning protruding portion, the position of the concave mirror with respect to the holder at least in the X direction of XY-plane coordinates along the mirror surface; a second holder-side positioning portion defining, through contact with the second positioning protruding portion, the position of the concave mirror with respect to the holder at least in the Y direction of the XY-plane coordinates; and a third holder-side positioning portion defining, through contact with the third positioning protruding portion, the position of the concave mirror with respect to the holder at least in the Z direction orthogonal to the XY lane.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: April 28, 2020
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Genichiro Sato, Hiroyuki Furusawa