Toshiba Lighting & Technology Corporation

Kabushiki Kaisha Toshiba

Fuji Electric Co., Ltd.

Makoto Yamazaki

Takayoshi Moriyama

Masataka Shiratsuchi

Katsumi Hisano

Mitsuaki Kato

Yuichiro Yamamoto

Kiyoshi Kandatsu

Yumi Hanyuda

Junya Murata

Hiroshi Kinota

Yoshiji Kamata

A lighting unit according to one embodiment includes a board, a support member, and a plurality of heat radiation fins. A light emitting element is disposed on a first surface of the board. The support member has an interior surface on which a second surface of the board that is opposite to the first surface is disposed to be in contact therewith to enable heat conduction from the board to the support member. The heat radiation fins are disposed on an exterior surface of the support member substantially parallel with each other and with a clearance between each other, and each having a flat shape that extends outwardly from the exterior surface.

Lighting unit and lighting device

In one embodiment, a lighting apparatus includes a light source unit having light emitting units arranged in a longitudinal direction. A transparent cover member is formed in a substantially straight pipe shape and having openings at both ends for housing the light source unit along the longitudinal direction. The cover member has a higher thermal expansion coefficient than that of the light source unit. End plate members are fixed to the both ends of the light source unit and close the openings at the both ends of the cover member.

Lighting apparatus

Floodlight

A contactor device for a circuit breaker includes a stationary contactor having a stationary contact, and a stationary conductor secured with the stationary contact and constituting an electricity path extending from an external terminal to the stationary contact, and a movable contactor having a movable contact movable to detachably touch the stationary contact, and a movable conductor secured with the movable contact and constituting an electricity path extending from the movable contact to another external terminal. The contactor device further includes a stationary core made of a ferromagnetic material with a gap between both ends of the stationary core and surrounding the stationary conductor, a movable core provided at a distance from said stationary core to be attracted toward the stationary core by a magnetic flux generated in the stationary core by an excessive overcurrent flowing through the circuit breaker, and an electrically insulating plate movable in a direction perpendicular to that of separation of the movable contact from the stationary contact, so that the insulating plate is moved together with the movable core and inserted into a space between the stationary contact and the movable contact at the time of the attraction of the movable core toward the stationary core, when the breaker cuts off the overcurrent.

Contactor device for circuit breaker

Growing community of inventors

Kanagawa, Japan

Makoto Yamazaki