Tokyo Shibaura Denki Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Toshiba Lighting & Technology Corporation

Masaharu Baba

Kiyokazu Honda

Akiyoshi Hashima

Takao Mizukami

Yoshiji Yoshiike

Mitsutoshi Kimura

Yoshiaki Hara

Teiji Shimokawa

Masako Nakamura

Yasuhiro Nieda

Nobuhiko Hayashi

Masato Higano

Akihiko Komatsuzaki

A lighting apparatus such as for a display apparatus equipped for an instrument panel of an automobile, for example, comprises a light source, such as a light-emitting diode, having polarities of substantially a tubular structure having a center axis, a circuit board arranged substantially on the center axis of the light source and electrically connected thereto, a socket body having substantially a cylindrical structure for accommodating the circuit board, and contact terminals accommodated in the socket body and including an inner terminal portion electrically connected to the circuit board through a contact point of the circuit board and an outer terminal portion electrically connected to the inner terminal portion and fixed to the socket body so as to protrude outward the socket body. The circuit board is provided with a flicker element for flickering the light source at 0.5 to 10 Hz controlled by a control unit provided for a printed circuit board of the display apparatus.

Lighting apparatus and display apparatus having the same

A lamp device is constituted by an assembly consisting of a holder and a lamp and can be detachably attached to an installation hole of a print board or the like. The lamp device internally includes a flickering circuit for flickering the lamp. The holder comprises first, second, and third contact members for electrically connecting a power supply terminal of the print board with the lamp, and a flickering circuit element is contained in the holder. The first contact member has contacts with the power supply terminal and with a lead of the lamp. The second contact member has contacts with another lead of the lamp and with a terminal of the flickering circuit element. The third contact member has contacts with another terminal of the flickering circuit element and the power supply terminal.

Lamp device and a display apparatus using the same

A lamp device includes a ring-shaped bulb, terminated at a prescribed annular length, each terminated portion of which is formed in a linear shape so as to make the bulb axis of one of the terminated portions coincide with that of the other terminated portion, and a base structure rotatably mounted around the opposite terminated portions of the bulb. Thus, the location of the bulb can be adjusted to a desirable position by the rotation of the bulb when the lamp device is attached to an external supporting device.

Ring-shaped lamp device having bulb tiltable relative to base structure

An illuminating apparatus including a casing having an open side, a light reflective surface formed on the interior of the casing, a light diffusive transmission member on the casing and covering the open side, a discharge lamp mounted in the casing underneath the light diffusive transmission member, a first heating element disposed between the discharge lamp and the light reflective surface and a second heating element disposed between the discharge lamp and the light diffusive transmission member.

Illuminating apparatus

A light detector which indicates decrease in the level of ambient light below a prescribed value. The light detector includes a light indicator for radiating light when the level of ambient light decreases below the prescribed value, a light sensor arranged parallel to the light indicator for receiving actual light including ambient light and light from the light indicator for outputting a detection signal corresponding to a level of actual light, and a control circuit for evading effect of the light from the light indicator for controlling the operation of the light indicator while ambient light is below the prescribed level even though the actual light received by the light sensor increases above the prescribed level.

Light detector having light sensor and light indicator, and control

This invention provides a headlight unit comprising: a light source; reflector means for reflecting the light from the light source into a beam; and circuit means for adjusting the position of the beam and for controlling the degree of rotation of the reflecting means.

Headlight unit

A display panel illumination device has a display member for transmitting predetermined information, a light source for illuminating the display member, and a light guiding member for guiding light emitted from the light source to the display member. The light guiding member is made of a flexible transparent or translucent material.

Display panel illumination device

A socket has a bulb insertion cavity into which a sealed section of a baseless lamp is inserted. The socket is mounted to a mounting base by being inserted through an insertion hole thereof and then turned in a predetermined direction. The socket has a pair of contact members disposed in the insertion cavity. Each contact member has a power supply terminal, and a contact protuberance is formed on the free end of the terminal. The protuberance has a flat top surface being in contact with a printed wiring on the mounting base, a first inclined side surface extending from the top surface toward the base end of the terminal, a second inclined side surface extending from the top surface in the turning direction of the socket, and third and fourth inclined side surfaces opposite to the first and second surfaces, respectively. The first and second surfaces are inclined more gently than the third and fourth surfaces.

Socket for baseless lamp

A baseless incandescent lamp assembly comprises a baseless incandescent lamp including a flattened seal section and a pair of external lead wires, a main socket body including a lamp holding chamber to contain the flattened seal section of said baseless incandescent lamp, and a pair of conductive holding members provided in the lamp holding chamber of the main socket body and holding the flattened seal section. Said external lead wires are held and electrically connected to the conductive holding members by being pressed between the conductive holding members and the inner surfaces of the lamp holding chamber.

Baseless incandescent lamp assembly

A socket for holding a baseless incandescent lamp to be in electrical contact with terminals of said incandescent lamp, includes a socket body having a receiving cavity with a rectangular section into which a squeezed portion of said baseless incandescent lamp is to be fitted,

Socket for baseless incandescent lamp

A method for manufacturing a baseless incandescent lamp assembly comprises a step for molding a conductive plate material into a continuous holding member chain including a number of facing pairs of holding members on both sides of a belt-like coupling section, a holding step for causing a flattened seal section of a baseless incandescent lamp to be held between the paired holding members, a step for cutting off the paired holding members from the coupling section while keeping the flattened seal section of the baseless incandescent lamp between the holding members, and a step for inserting the holding members holding the flattened seal section of the baseless incandescent lamp therebetween into a lamp holding chamber of a main socket body, thereby fixing the holding members to said main socket body.

Method for manufacturing a baseless incandescent lamp assembly

A method for manufacturing a baseless incandescent lamp assembly comprises a step for holding a flattened seal section of a baseless incandescent lamp between a pair of holding members, a step for inserting the holding members into a lamp holding chamber of a main socket body while keeping the flattened seal action of the baseless incandescent lamp between the holding members, and a step for softening part of said main socket body by heating to deform the same, thereby forming caulked portions to prevent the inserted holding members from slipping out of the lamp holding chamber.

A socket for electrically and mechanically connecting a baseless lamp comprises a cylindrical main body having a peripheral wall and, a bottom wall to receive said one end of said lamp, engaging segments and an insulating engaging flange protruding from the outer periphery of the peripheral wall of the main body and capable of holding a printed wiring board therebetween, a groove and slot assembly for leading out lead wires of the lamp with one end inserted in the main body from the main body through said bottom wall and fixedly holding part of said lead wires on a surface of said engaging flange which faces said engaging segments.

Growing community of inventors

Yokohama, Japan

Masaharu Baba