Abstract: A needle type gauge includes: a needle that includes a main rotating portion that rotates around a rotation shaft, and an indicator which points out an index part; and an actuator. The main rotating portion includes a light emitting portion that emits strip-shaped light. The light emitting portion is located at the actuator side relative to the indicator, and emits the strip-shaped light to a nearby area to the indicator and located, relative the indicator, at one side in a rotation direction of the indicator. The needle includes a shield which extends in a direction of the actuator from the indicator, extends along the indicator, and blocks, among the strip-shaped light, light directed from the one side in the rotation direction of the indicator to the other side therein.

Abstract: A color mixing device and a display device are configured to represent the color white in a consistent fashion, even in low-luminance areas. These devices are provided with: a red light source for outputting red light at optical intensity in response to a first current presented thereto; a green light source for outputting green light at optical intensity in response to a second current presented thereto; a blue light source for outputting blue light at optical intensity in response to a third current presented thereto; and a color mixing means for color mixing of the red light, the green light, and the blue light together. A light attenuating part transmits or reflects the blue light, bringing about attenuation and advance thereof in the output direction. The blue light output by the blue light source is attenuated to a greater extent than the light of the other colors during output.

Abstract: The purpose of the present invention is to cut down the travel distance of a display image on receiving a stop instruction intended for a stepping motor and thereby reduce a feeling of strangeness perceived by a user. A display device allows a user to view the image displayed on a display at a prescribed display position. The display device comprises: a stepping motor having a rotor including a magnet and driven by a micro-step drive method; a reflector which moves in accordance with the rotation of the rotor in the stepping motor so as to move the display position; and a motor control device. The motor control device identifies a rotational position of the rotor between adjacent stable excitation positions, and moves the rotor to reach the closer of the stable excitation positions on the basis of the identified rotational position on receiving a stop instruction intended for the stepping motor.

Abstract: Provided are a drive device and drive method for a vacuum fluorescent display that can suppress brightness variations in display images and improve display quality. A drive device for a vacuum fluorescent display is provided with a positive electrode unit in which a plurality of positive electrodes to which a phosphor is applied are disposed in a matrix shape and a negative electrode filament that discharges electrons toward the positive electrode unit. The device is provided with: a first magnetic field generating means that generates a first magnetic field perpendicular to the direction in which the positive electrode unit and the negative electrode filament face each other and that can periodically switch polarity; and a second magnetic field generating means that generates a second magnetic field that is perpendicular to the direction in which the positive electrode unit and the negative electrode filament face each other and crosses the first magnetic field and that can periodically switch polarity.

Abstract: A display device includes: a stepping motor; a concave mirror that moves in accordance with the operation of the stepping motor, the concave mirror reflecting display light emitted from a display unit toward the windshield; a lever part that moves together with the concave mirror; a drive unit for driving the stepping motor by a microstep drive system; a control unit for controlling the movement of the concave mirror by controlling the drive unit; and a stopper unit provided within the range of movement of the lever part. The drive unit is configured to detect the counter-electromotive force generated by the stepping motor when the lever part comes into contact with the stopper unit. The control unit determines the reference position when the movement of the concave mirror is controlled in accordance with the counter-electromotive force detected by the drive unit.

Abstract: An information providing device for a vehicle, comprising an in-car device having a display unit for displaying vehicle state information and a first control means for activating the display unit; and an external device having a second control for outputting external information. The display unit has a first display area for displaying predetermined information, and a second display area for displaying other information. The first control implements a first display mode for displaying the vehicle state information and a second display mode for displaying the vehicle state information and the external information. In the second display mode, the first control means activates the display unit so that the external information is displayed in the second display area.

Abstract: A scanning-type projection device is provided with an emitted-light-intensity control unit for controlling the light intensity of a laser light emitted by a laser light source unit, a polarization direction control unit for controlling the polarization direction of the laser light, a scanning unit for scanning the laser light and generating a display image, and a divergence unit on which the laser light scanned by the scanning unit is incident. The emitted-light-intensity control unit has a polarization control element for controlling the polarization state of the laser light, and a polarizing plate on which the laser light emitted from the polarization control element is incident, and the polarization direction control unit adjusts the polarization direction of display light incident on a projection surface by controlling the polarization direction of the laser light emitted by the emitted-light-intensity control unit.

Abstract: Provided is a headup display device which is not liable to generate abnormal sound. The headup display device comprises: a liquid crystal display for emitting display light; a concave mirror for reflecting the display light; and a motor device for rotating the concave mirror. The motor device includes: a motor having a motor shaft projecting from a motor body; a worm connected to the motor shaft and having a spiral groove formed on the outer peripheral surface; and a worm wheel provided with teeth engaging with the spiral groove and transmitting a driving force from the motor to the concave mirror. A hole is formed inside the worm extending in the axial direction of the worm from the end face of the worm near the motor body. A compression coil spring is arranged in the hole for biasing the worm in the direction opposite the motor body and biasing the motor shaft toward the motor body.

Abstract: Provided is a vehicle display device which exhibits high visibility, and which has an attractive external appearance. A vehicle display device according to the present invention is provided with: pointer-type instruments (a speedometer and an engine tachometer; a display disposed next to the pointer-type instruments; and a planar protective plate which has, formed on the front surface thereof, a first reflected-light suppression layer. The protective plate is disposed so as to cover the front surfaces of the display and the pointer-type instruments. Furthermore, in the protective plate, light-blocking layers for concealing spaces between the display and the pointer-type instruments are formed. Moreover, a light-transmitting bonding layer, which covers and bonds a display surface of the display, and second reflected-light suppression layers, which cover the front surfaces of the pointer-type instruments, are formed on the rear surface of the protective plate so as to not overlie each other.

Abstract: A headup display apparatus for vehicles is capable of suppressing deterioration of luminance of virtual images, while avoiding a cost increase. This headup display apparatus includes: a light emitting unit having at least a light emitting body that emits output light; a liquid crystal display which emits display light; a concave mirror which reflects the display light; and a housing which houses the light emitting unit, the liquid crystal display, and the concave mirror. The output light that has been emitted from the light emitting body, and the display light that has been reflected by the concave mirror are radiated to a windshield through a translucent cover, and a virtual image obtained by means of the radiation is visually recognized by a driver. The light emitting unit is disposed inside of the housing such that the light emitting unit faces the windshield with the translucent cover therebetween.

Abstract: Provided is a vehicular heads-up display device with which it is possible to avoid burn-in of an internal component upon a reflecting member by exterior light, improving display quality. A vehicular heads-up display device, comprising a case body (50) whereon an aperture part (51c) is disposed and a light-emitting body (30) that is housed within the case body (50) reflects emitted light L that is emitted by the light-emitting body (30) externally to the case body (50) via the aperture part (51c) and reflects said emitted light L from the windshield (13), causing the driver (14) to have sight of the virtual image V that is obtained by said reflection. The vehicular heads-up display device further comprises a semi-transmissible cover (55) installed in the aperture part (51c), and a dispersal means (58) is disposed between the light emitting body (30) and the cover (55), for dispersing exterior light that enters the case body (50) via the cover (55).

Abstract: Provided is a head-up display device capable of projecting a virtual image on a curved surface. a curved parallel mirror receives parallel beams from a collimator lens and outputs a plurality of transmitted beams by being configured such that a semi-transparent curved mirror and a curved mirror are arranged opposing each other, said semi-transparent curved mirror reflecting a portion of the parallel beams while allowing the other portion to pass through as transmitted beams, and said curved mirror reflecting parallel beams toward the semi-transparent curved mirror. The curved parallel mirror has a convex curved shape toward the transmission side such that when the outputted plurality of transmitted beams are reflected by a curved surface, the reflected transmitted beams become display beams representing a virtual image substantially parallel to a first plane.

Abstract: Provided is a liquid level detection device with excellent bonding strength between components. This liquid level detection device is provided with a holder which has a magnet inside and which rotates in response to displacement of a float floating in the liquid the level of which is to be measured, a main body unit which rotatably supports the holder and has a magnetic detection element which detects magnetic pole change accompanying rotational movement of the magnet, and a cover which covers the holder and which is attached by welding to the main body unit to prevent the holder from falling away from the main body unit. The cover is welded to the main body unit by melting protrusions formed on the main body unit.

Abstract: A light intensity detection signal indicative of the intensity of light emitted by a light source is acquired, and on the basis of the light intensity detection signal and a set reference signal, a comparison circuit generates a comparison signal indicative of turning ON and OFF. Within a sub-frame period, a logic circuit repeats turning ON/OFF based on a pulse signal inputted from the comparison circuit, and outputs a lighting signal for causing the light source to emit light in accordance with the reference signal which is a set value, and outputs a non-lighting signal for causing the light source to not emit light in accordance with a set value.

Abstract: A navigation device 10 comprises: position detecting means 11 for determining the current position of a user from the absolute position in longitude and latitude by using the electric waves coming from a plurality of artificial satellites going around the earth; storage means 14 for storing the coordinates in longitude and latitude of nodes, as obtained by setting a starting point and a final place, on a scheduled route; display means 12 for displaying the current position and the scheduled route; and control means 16 for controlling the display on the display means 12 by converting the angular data of the absolute positions and the coordinates into distance data while making corrections according to the current position, and by calculating an element between the nodes thereby to calculate whether or not the current position is on the scheduled route, in dependence upon whether or not the distance between the element and the current position is within a predetermined range.

Abstract: Provided are a pressure detection device having a fail-safe structure for minimizing leaking out of a fluid targeted for pressure detection, and a method for producing the same. A pressure detection device is provided with: a fluid inflow member having a flow path; a pressure sensor for detecting the pressure of the fluid that has flowed into the flow path; a base plate unit having a first resin section surrounding the pressure sensor; a lid section which is bonded to the first resin section so as to cover the pressure sensor from above, and forms a sealed space in the interior of which the pressure sensor is located; a terminal unit; and a resin cover section for bonding the fluid inflow member, the base plate unit, the lid section, and the terminal unit. The lid section is bonded to the first resin section and is pushed on from above by the resin cover section.

Abstract: A power supply control device is configured to reduce a current supplying capacity required by a power supply even when power is supplied to a prescribed external device. The power supply control device comprises a first power supply for supplying power to a pointer instrument; a first control unit that operates with power from the first power supply and controls driving of the pointer instrument and supply of power from the first power supply to the pointer instrument; and a second control unit for controlling supply of power from the first power supply to an external memory. Upon receiving a prescribed command, the first power supply stops supplying power to the pointer instrument, and the first power supply starts supplying power to the external memory in response to the stoppage.

Abstract: Provided is a display device for a vehicle that can, in a configuration in which the cost of parts is curbed, quickly raise the temperature of a laser light source (LD) in a low temperature environment, and quickly perform stable image output. The LDs (11, 12, 13) emit laser light (RGB) and an MEMS mirror (30) scans the laser light (RGB) and generates a display image (M). A convex mirror (70) reflects display light (L) indicating the display image (M) in an external direction via a translucent light-transmitting unit (90). An LD driving means (101) emits laser light (RGB) to the LDs (11, 12, 13) when the temperature is low, and causes the LDs (11, 12, 13) to perform self-heating driving for raising the temperature of themselves.

Abstract: Provided is a thin liquid surface detecting apparatus wherein a thickness of a holder is suppressed. A liquid surface detecting apparatus is provided with: a holder rotatably held to a main body section; a magnet fixed to the holder; an arm, which connects the holder and a float floating on the liquid surface of a liquid, and which converts an up-and-down motion of the float into a rotation motion of the holder; and a magnetic detecting element, which is positioned at a rotation center portion of the holder, and is fixed to the main body section such that the magnetic detecting element intersects a magnetic flux of the magnet, and which detects a magnetic change generated with displacement of the magnet and converts the change into electrical signals. The liquid surface detecting apparatus detects the liquid surface on the basis of the electrical signals transmitted from the magnetic detecting element.

Abstract: A liquid level detection device is configured so as to reduce or eliminate the contact between electrical cords led out of a detection section. A liquid level detection device is provided with: a detection section which detects the position of a liquid surface on the basis of the rotation of a rotation section rotating as a float is displaced; a plate-like mounting plate section, one surface of which is a mounting surface to which the detection section is mounted; a flange section which is mounted to a tank for containing liquid; and first and second electrical cords which are led out of the detection section toward the flange section. A branch section which comprises a through-hole is provided in the mounting plate section. The second electrical cord passes through the branch section and is routed around from the mounting surface side of the mounting plate section to the back surface side thereof.