Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Mitsubishi Danki Kabuhiki Kaisha

Yoshinori Kakuta

Masami Tomita

Kunihiko Nakagawa

Akira Sakuta

Kimito Nishikawa

Seiji Kishikawa

Hirokazu Taguchi

Naoki Kanno

Shinji Okamori

Shigeru Takeuchi

Naoki Kawamoto

Nobuzumi Kurihara

Eiji Matsuo

Shosuke Oka

Osamu Fujiwara

Akio Kiriyama

Tooru Yuri

Self-aligning mechanisms hold a condenser housing. The condenser housing is moved toward an integrator while tapered surfaces of the condenser housing of an LED light source unit are inserted along condenser lens guides of a projection unit. LED light source unit datum surfaces and datum surfaces of the projection unit abut against each other, and the tapered surfaces of the LED light source unit can no longer move toward the integrator along the condenser lens guides of the projection unit. In this state, the LED light source unit and the projection unit are coupled to each other.

Projection display apparatus

A video display device includes a light guide unit for guiding outgoing light from a light source unit to a pixel area of a display device. The light guide unit includes a rod integrator having an input opening through which the outgoing light from the light source unit enters and an output opening provided on a side opposite to the input opening, and a light shielding plate provided between the input opening of the rod integrator and the light source unit. The light shielding plate has a plurality of types of openings for passing the outgoing light from the light source unit to the rod integrator. The light shielding plate is arranged in a state where one of the plurality of types of openings, which has a shape similar to that of the input opening of the rod integrator which is actually mounted, is aligned with the input opening.

Video display device and light guide module with a light shielding plate having a plurality of openings

A work to replace a display panel body is facilitated. A display apparatus includes a display panel unit () having a display panel body () that displays an image, and a panel supporting member () that is attached to the display panel unit () and that supports the display panel unit (), wherein the display panel unit () has handles (to), and the handles (to) are at least partially exposed outside of the panel supporting member ().

Display apparatus

A package structure prevents an optical sheet from being brought into contact with a display panel and making scratches on the display panel due to motion caused during transport of a display device, thereby minimizing cost increase. A package structure for a thin display device is the structure for storing the thin display device in a package case. The thin display device includes at least one optical sheet situated in approximately parallel with its display surface, and the package case includes a storage member for holding a thin display device with the optical sheet having a surface inclined relative to a vertical direction.

Package structure for display device

A light source device () includes a lamp unit () and a lamp cartridge () in which the lamp unit () is housed. The lamp unit () includes a discharge lamp (), a reflection mirror () and a transparent plate (). The reflection mirror () has ventilation openings (). The lamp cartridge () has ventilation openings (and). Fragment-passage prevention members (and) are provided on the ventilation openings (and). The fragment-passage prevention members () allow the passage of the air but prevent the passage of the fragments of the discharge lamp (). With such an arrangement, it is possible to prevent the fragments from being scattered out of the lamp cartridge (), even when the breakage of the discharge lamp () occurs.

Light source device and projection-type image display device

A light source device () includes a discharge lamp (), a reflection mirror (), a transparent plate () and a case (). The reflection mirror () has inlet openings () and outlet openings () formed in the vicinity of the front end of the reflection mirror (). The case () has outlet openings () disposed on the front side of the reflection mirror (), and an inlet opening () disposed on the rear side of the reflection mirror (). The inlet opening () of the case () allows an air to flow into the case () and to flow along a back surface () of the reflection mirror (). The inlet openings () of the reflection mirror () allow the air to flow into the interior of the reflection mirror (). The outlet openings () of the reflection mirror () and the outlet openings () of the case () allow the air to be exhausted out of the case ().

A light source device includes a first spheroidal mirror having first and second focal points, and a light source unit having a plurality of semiconductor light emitting elements radially disposed on a support with respect to the axis of rotation of the first spheroidal mirror. Light beams from the semiconductor light emitting elements pass through the second focal point, reflect from the inner surface of the first spheroidal mirror, and are focused to the first focal point, and the axis of rotation and the light emission central axis of each of the semiconductor light emitting elements form an angle of 90 degrees or greater. The light source unit is removably attached to an opening provided at a non-reflective portion of the first spheroidal mirror so as to form an illumination unit.

Light source device

A video-displaying apparatus uses a rod integrator that converts light emitted from a light source into uniform light. The apparatus includes a rod integrator, a holding member, and a flat spring. The rod integrator has a first surface, a second surface that opposes the first surface, a third surface, and a fourth surface that opposes the third surface. The holding member has a first contact surface which abuts the second surface, and a second contact surface which abuts the fourth surface. The first and second contact surfaces have smaller areas than the second and fourth surfaces, respectively. The rod integrator is fixedly mounted to the holding member such that the rod integrator is sandwiched between the holding member and the flat spring mounted to the holding member. Only the projections formed in the spring abut the first and third surfaces.

Image displaying apparatus

A disc apparatus for recording information to and reproducing information from a disc includes a turntable with a magnetized surface; an excitation coil disposed opposite the magnetized surface of the turntable; a drive circuit driving a focus actuator; a detector detecting focusing error; and a control circuit. The control circuit controls energization of the excitation coil in accordance with the detector so as to move the turntable in the axial direction via the magnetic force between the excitation coil and the magnetized turntable.

Automatic disc-changing apparatus, disc-chucking apparatus, disc apparatus and position-detecting apparatus

An automatic disc-changing apparatus is for selectively transporting cartridge holders capable of accommodating a plurality of cartridges containing discs for the recording of information from a standby position to a recording and reproducing position, or from recording and reproducing position to standby position, transporting any single cartridge. This apparatus comprises cartridge holders for holding the cartridges; a holding mechanism for standby, for holding the cartridge holder in the standby position; a holding mechanism for transport, for holding the cartridge holder for transport; a transfer mechanism for moving it horizontally to the front and rear; and an elevator mechanism for raising and lowering holding mechanism for transport. This apparatus is compact, of simple configuration and convenient to use.

Automatic disc-changing apparatus, disc-chucking apparatus, disc

An automatic disc-changing apparatus for selectively transporting cartridge holders from a standby position to a recording and reproducing position, or from a recording and reproducing position to a standby position. The cartridge holders are capable of accommodating a plurality of cartridges containing discs to record information thereon and thereby transport any single cartridge. The automatic disc-changing apparatus comprises a plurality of cartridge holders for holding the cartridges; a standby-holding mechanism for holding the cartridge holder in the standby position; a transport-holding mechanism for selectively engaging with the cartridge holder for transport; a transfer mechanism for moving the transport-holding mechanism horizontally to the front and rear of the apparatus; and an elevator mechanism for raising and lowering the transport-holding mechanism. This apparatus is compact, simple in configuration and convenient to use.

Mechanism conceptual drawing operation display apparatus, transmission

An automatic cassette tape recording and reproducing apparatus having a plurality of cassettes mounted wherein any tape cassette for a reproducing or recording operation may be selected. The apparatus includes a swinging base with a revolving turntable having cassette holders, a turntable revolving mechanism for revolving the turntable when a cassette is selected, and a position detecting mechanism for positioning and identifying the cassette selected by the turntable revolving mechanism. The apparatus also includes a deck on which the selected cassette is mounted when the swinging base comes to a position for playing.

Automatic cassette tape recording and reproducing apparatus with a

In a magnetic tape recording and playback device which has a rotating drum with magnetic heads, a capstan, and reel blocks, the stator coils of motors for driving them are mounted on a board together with electrical circuits for controlling the motors. The electrical circuits and the stator coils of motors are interconnected by conductor patterns formed on the board.

Magnetic tape recording and playback device interconnected by conductor

A magnetic recording and reproducing apparatus, such as VTR or DAT, in which a cassette containing a magnetic tape is to be loaded and which is capable of drawing the tape from the cassette and introducing onto a head drum to perform desired recording and reproducing actions. A tape loading mechanism of the apparatus comprises at least one loading disk, a tape drawing member, and a drive system for the drawing member. For minimizing the size of the apparatus, the loading disk is disposed around one of a pair of reel spindles, and the rotation of the loading disk is transmitted to the drawing member via a link. The loading mechanism gives the same driving force also to a tape tensioning device, a reel spindle braking device and a pinch roller driving device.

Growing community of inventors

Tokyo, Japan

Yoshinori Kakuta