Kabushiki Kaisha Toyota Jidoshokki

Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Yasuya Mita

Norihito Takeuchi

Fumikazu Isogai

Eiki Niida

Yoshiharu Yasui

Yasuki Miyashita

Meiji Anahara

Tomoyoshi Motohiro

Yasuhiko Takeda

Tatsuo Fukano

Wataru Yokoyama

Minoru Toeda

Tsuneo Suzuki

Noriyuki Besshi

The present invention provides a display device including: a transparent plate having at least one recessed portion formed on a rear surface side thereof, the recessed portion forming a pattern corresponding to a design to be displayed; a first reflecting member which is disposed on the rear surface side of the transparent plate and on a region except for the recessed portion of the transparent plate, and has light reflectivity at a surface facing the transparent plate; a second reflecting member which is disposed on the rear surface side of the transparent plate and on a region including the recessed portion of the transparent plate, and has light reflectivity at a surface facing the transparent plate; and a light emitting device for emitting light, when illuminated, to a front surface side of the transparent plate through the recessed portion of the transparent plate without exiting light from the region except for the recessed portion of the transparent plate to the front surface side of the transparent plate, the light source being disposed on the rear surface side of the transparent plate.

Display device

A light guiding plate guides light from a light source and irradiates the light onto a display portion. The light guiding plate has an exit plate facing the display portion, and a reflection-exit plane opposite to the exit plane. The reflection-exit plane has a first end intersecting an incidence plane and a second end intersecting an opposite end plane. An inclination angle, defined by the exit plane and a line that contains the first end and the second end, is greater than 0.20&#xb0; and less than 0.75&#xb0;. The reflection-exit plane includes a light admission portion that reflects light entering through or reflected on the incidence plane to the exit plane.

Light guiding plate for front light

A light guiding plate guides light from a light source and irradiates the light onto a display portion. The light guiding plate has an incidence plane, which permits light to enter the light guiding plate, an opposite and plane opposite to the incidence plane an exit plane facing the display portion, and a reflection-exit plane opposite to the exit plane. A plurality of grooves are formed on the reflection exit plane. In any adjacent pair of the grooves, the depth of the groove closer to the opposite end plane is equal to or greater than the depth of the groove closer to the incidence plane. The depth of the grooves substantially increase from the incidence plane toward the opposite end plane. This improves the uniformity of brightness distribution.

Wedge plate type light guiding plate for front light

A light guiding plate guides light from a light source and irradiates the light onto a display portion. The light guiding plate has an incidence plane, an opposite end plane opposite to the incidence plane, an exit plane facing the display portion, and a reflection-exit plane opposite to the exit plane. A plurality of grooves are formed on the reflection-exit plane. The depth of the grooves monotonously increases from the incidence plane toward the opposite end plane. Each groove is defined by intersecting first and second planes. In each groove, the angle defined by the first plane and the exit plane is substantially equal to that of the other grooves. In each groove, the angle defined by the first plane and the second plane is substantially equal to that of the other grooves. This waveguide increases the brightness and improves the uniformity of brightness distribution.

Wedge plate type light guiding plate for front light and method for manufacturing the light guiding plate

A light guiding plate guides light from a light source to illuminate a liquid crystal cell. A reflector reflects light from the light source. A first surface and a second surface selectively transmits or reflects light. A first region is formed on the first surface at a location that is relatively near the light source. The first region includes a first inclined face and a second inclined face. The first inclined face reflects light from the light source to guide light to the reflector. The second inclined face reflects light from the light source to the second surface so that the second surface emits light. A second region is formed on the first surface at a location that is relatively far from the light source. The second region includes a third inclined face and a fourth inclined face. The third inclined face reflects light from the light source to the second surface so that the second surface emits light. The fourth inclined face reflects light reflected by the reflector to the second surface so that the second surface emits light.

Light guiding plate

A fiber-reinforced plastic pipe has a joint section formed in one end. The joint section is coupled to another member. The pipe includes a helical layer formed with a fiber. The fiber is wound at a winding angle that is equal to or less than forty-five degrees. The fiber volume fraction of the joint section is lower than the fiber volume fraction of the remainder of the pipe.

Fiber-reinforced plastic pipe

A drive shaft having a body section and a yoke section formed with at least one end of the body section. A hole is formed in the yoke section. The body section and yoke section are integrally made of a fiber reinforced composite material including a filament and a plastic adhered to the filament. The shaft comprises a plurality of shaft fiber layers forming the body section. Each shaft fiber layer includes a plurality of shaft fiber elements being arranged at predetermined intervals. A plurality of yoke fiber layers form the yoke section. Each yoke fiber layer includes a plurality of yoke fiber elements. Each yoke fiber element has ends connected to each shaft fiber element. Each yoke fiber element has either a closed loop arrangement (CLA) or an open loop arrangement (OLA). The CLA is defined by the yoke fiber elements forming closed loops around the hole. The OLA is defined by the yoke fiber elements forming open loops around the hole.

Growing community of inventors

Kariya, Japan

Yasuya Mita