Yazaki Corporation

Naohisa Murata

Kenji Yagi

Yuta Miyake

Hidetoshi Mukojima

Yasuhiro Katsumata

Noriaki Narushima

Yusuke Fujimoto

Haruyoshi Ono

Takayuki Mizushima

Yusuke Sugiura

Naoto Tsubakihara

Jun Shihaku

Kenji Koizumi

Kazuki Kubota

Koichiro Hagiwara

A vehicle display device includes a housing, a TFT that is accommodated in the housing, a mirror that is accommodated in the housing and reflects display light output from the TFT toward a windshield of a vehicle, a sapphire glass with a transparent plate shape that is disposed in contact with a display surface of the TFT, a lower case that functions as a heat dissipation part that dissipates heat, and a heat pipe that has one end connected to an edge part of the sapphire glass and the other end connected to the lower case, and conducts heat of the sapphire glass to the lower case.

Vehicle display device

A display device for a vehicle includes a housing that is provided in a vehicle, a TFT that is housed in the housing, an intermediate mirror, an infrared light absorbing member, and a thermistor. The intermediate mirror is housed in the housing, reflects, on a reflecting surface, display light that has been output from the TFT in such a way that the display light reaches a visual observation position of a driver of the vehicle, and transmits infrared light included in sunlight without reflecting the infrared light on the reflecting surface. The infrared light absorbing member is provided on a side of a rear face that is opposite to the reflecting surface of the intermediate mirror, and absorbs the infrared light that has been transmitted through the intermediate mirror. The thermistor is provided to the infrared light absorbing member, and detects the temperature of the infrared light absorbing member.

Display device for vehicle

An image display device includes a display unit provided in a housing and emits display light, a reflection unit that reflects the display light and projects the display light on a display member, a first polarizing unit provided in the housing, is disposed on an optical path on which the display light passes, and polarizes, along a first polarization axis, external light made incident on the housing from the outside, a second polarizing unit provided in the housing, is disposed on the optical path, is rotatably provided centering on an axis along the optical path, and polarizes the external light along a second polarization axis. The image display device further includes an adjustment unit that rotates the second polarizing unit based on condensing information of the display unit and changes the direction of the second polarization axis to adjust a transmission amount of the external light on the optical path.

Image display device

A vehicle display device includes a display that emits a display image to be projected onto a windshield provided to a vehicle, as display light, at least one reflecting mirror that is disposed on an optical path of the display light from the display to the windshield and reflects the display light, an optical sensor that detects external light (SL) incident from an opening through which an outside and an internal space are communicated with each other, a temperature sensor that detects a temperature of the display, a dimming member that is disposed on the optical path of the display light, and a controller that causes the dimming member to be switched between a state with a first transmissivity and a state with a second transmissivity smaller than the first transmissivity.

There is provided a head-up display device including: a display configured to emit a display light ray therefrom, a reflection member configured to pivot around a rotation axis and reflect the display light ray to project a display image; and a housing configured to accommodate the reflection member. The reflection member has a plurality of ribs protruding from a surface on an opposite side to a reflection surface which reflects the display light ray, and the plurality of ribs have a portion in which a height on an outer side in a rotational direction centered at the rotation axis is lower than that on an inner side in the rotational direction.

Head-up display device

A vehicle display device includes a display device, a reflecting mirror, an optical sensor configured to detect external light, and a controller configured to enable execution of a temperature lowering operation. The display device includes a light transmissive liquid crystal display unit disposed on an optical path of light emitted from a light source and a first optical member disposed between the liquid crystal display unit and the light source and configured to change an optical path of light that enters the first optical member from the light source and passes therethrough toward the liquid crystal display unit. The optical sensor is disposed on an optical path of the external light incident on the display device at a side opposite to the liquid crystal display unit across the first optical member. The first optical member includes a passage on an optical path through which the external light passes.

Vehicle display device including passage extending through optical member

A vehicle display device includes a display that emits a display image projected on a windshield provided outside as display light, two reflective mirrors that are disposed on a light path of the display light from the display to the windshield and reflect the display light, an optical sensor that detects the external light entering from an opening communicating between the outside and an internal space, and a controller configured to execute temperature decreasing operation of the display for decreasing a temperature thereof when the optical sensor detects the external light. The optical sensor is disposed at a position to which external light directed toward the display via the reflective mirror is reflected by the display to be directed.

A backlight unit includes a light source; a condensing unit that condenses light emitted from the light source; and a diverging unit that diverges the light entering from the condensing unit and that emits the light toward an image display unit of a light transmission type in a head-up display device. For example, the diverging unit is a lens in which both surfaces of an incident surface into which the light from the condensing unit enters as well as an emission surface from which the light is emitted toward the image display unit, are concave surfaces.

Backlight unit and head-up display device

A backlight unit includes a housing having an opening in which an liquid crystal display device is disposed, a light source disposed inside the housing, and an optical member disposed inside the housing, turning a path of light from the light source toward the liquid crystal display device, and having a triangular prism portion made of a translucent material. The prism portion has one side wall serving as an entrance wall on which the light from the light source is incident, another side wall as an exit wall emitting light to the liquid crystal display device, and still another side wall as a reflecting wall reflecting the light incident on the entrance wall to the exit wall inside the prism portion.

Growing community of inventors

Shizuoka, Japan

Naohisa Murata