Koito Manufacturing Company, Ltd.

Takuya Serita

Atsushi Ozawa

Yoshimasa Murata

Tomoyuki Ichikawa

Masaya Shido

Ryujiro Ikuta

Masato Harazaki

Takayuki Otsubo

Ryota Naito

Takahiro Kumeta

Terutoshi Sako

Yuichiro Fujino

A lamp unit includes a light source, and a socket on which the light source unit is mounted. The socket includes a light source holder that holds the light source, and a connector that supplies power to the light source, and the light source holder includes a recess extending along a light source unit mounting surface from an outside to a portion immediately below the light source.

Lamp unit, vehicle lamp, and method for manufacturing lamp unit

A vehicle lamp includes: a first light source; a second light source; a first input terminal that receives a first turn-on instruction signal of the first light source; a second input terminal that receives a pulsed second turn-on instruction signal of the second light source; and a turn-on circuit that drives the first light source and the second light source based on the first turn-on instruction signal and the second turn-on instruction signal. The turn-on circuit includes: a drive circuit that becomes active based on the first turn-on instruction signal and the second turn-on instruction signal, and outputs a constant drive current from an output terminal; and a distribution circuit that forms a current path such that the drive current flows to the second light source, and forms a current path such that the drive current flows to the first light source.

Vehicle lamp

A light source unit includes a board, a resin-molded unit formed using a resin material as a base material and having thermal conductivity, and a socket housing including a heat sink formed of a metal material, and a board attachment portion to which the board is attached and a covered surface which is covered with the resin-molded unit, wherein the resin-molded unit is formed with a holding hole communicating with the covered surface, and the heat sink and the resin-molded unit are formed by integral molding when a portion of the covered surface and a portion of the attachment surface are pressed by a portion of a mold inserted through the holding hole and another portion of the mold, respectively.

Light source unit and vehicular lamp

In one embodiment of a light source unit, the heat-dissipation plate is provided with a first heat-dissipation portion in contact with the substrate, the resin molding part is provided with a plurality of heat-dissipation fins and an engaging portion to be engaged with a predetermined member, and the socket housing is formed by an integral molding of the heat-dissipation plate and the resin molding part.

Light source unit, method of manufacturing the same, and vehicle lamp

An LED unit according to the invention has a resin housing which is detachably assembled to a vehicle lamp, a lead frame which has a terminal portion which is connected to an exterior terminal, an LED mounting portion and a control part mounting portion and lead frame which is provided integrally on the housing, an LED which is mounted on the LED mounting portion, and a control part which is mounted on the control part mounting portion for controlling the illumination of the LED. The lead frame has a support resin which is a resin material which holds the LED mounting portion in such a way as to surround the LED mounting portion. The lead frame is bent to a back side of the LED at areas outside the support resin, and the control part mounting portion and the terminal portion are formed respectively by the bent portions.

LED unit and manufacturing method thereof

A light source unit includes a socket, a heat dissipation member, a board and a semiconductor light emitting element. The socket has a first thermal conductivity and includes a portion that defines a first side and a second side. The heat dissipation member has a second thermal conductivity being higher than the first thermal conductivity. The board is disposed on the first side. The semiconductor light emitting element is supported by the board. The socket is an injection-molded member. The heat dissipation member includes a first portion and a second portion. The first portion is disposed on the first side, extends in a first direction, and supports the board. The second portion includes a portion extending in a second direction intersecting with the first direction, as a result of being subjected to bending processing. A part of the second portion is disposed on the second side.

Light source unit

An arc tube for a discharge bulb, comprising a sealed glass bulb in which luminous materials are sealed; a plurality of pinch-sealed portions made of quartz glass and formed at both end portions of the sealed glass bulb; a plurality of molybdenum foils each pinch sealed in the corresponding pinch-sealed portion; a pair of electrode rods provided in the sealed glass bulb so as to face each other, wherein each of electrode rods extends from the sealed glass bulb to the corresponding pinch-sealed portion and is connected to one end of the corresponding molybdenum foil; and a plurality of lead wires each connected to the other end of the corresponding molybdenum foil, wherein the molybdenum foils comprise a plurality of closed cavities therein.

Arc tube for discharge bulb

A high-frequency discharge lamp includes a coaxial waveguide including an internal conductor and a pipe-shaped external conductor surrounding said internal conductor, and a discharge tube including a ceramic or glass tube having an approximately ellipse spherical bulged part formed in a middle of a longitudinal direction, and both ends pinched and sealed; a conductor assembly sealed and attached to an end of the ceramic or glass tube; and an auxiliary electrode for starting disposed near the approximately ellipse spherical bulged part. A rare gas for starting with 1 atmospheric pressure or more at room temperature together with a light emission substance is enclosed inside of the approximately ellipse spherical bulged part. The discharge tube is inserted conductor assembly end first and held in a top opening of the coaxial waveguide. A high-voltage pulse generated by a high-voltage pulse generator is applied to the auxiliary electrode through a pulse transmission line.

High-frequency discharge lamp incorporating an auxiliary starting electrode and lamp attachment to a coaxial waveguide

A discharge lamp includes a coaxial waveguide for high-frequency electromagnetic wave transmission and a discharge tube for emitting light of discharge by plasma generated by electromagnetic waves. The coaxial waveguide includes an internal conductor and a pipe-shaped external conductor surrounding the internal conductor. The discharge tube is attached to a top of the coaxial waveguide, and is constructed in a double end shape in which both ends of a glass tube are pinched and sealed. The glass tube includes an ellipse spherical bulged part formed in a middle of a longitudinal direction. An inside of the ellipse spherical bulged part forms discharge space. A conductor assembly is sealed and attached to at least a proximal side pinch seal part. The proximal side pinch seal part of the discharge tube is inserted and held in a top opening of the coaxial waveguide.

Discharge lamp

In the transient electric power control of a discharge lamp containing no mercury or a small amount of mercury, a change value relating to a lamp voltage from the initial value thereof is detected. A control unit is provided to change the temporal change rate of electric power supplied to the discharge lamp during the transient time period in accordance with the increase of the change value or the time lapse.

Growing community of inventors

Shizuoka, Japan

Takuya Serita