Toshiba Lighting & Technology Corporation

Kabushiki Kaisha Toshiba

Takumi Suwa

Makoto Sakai

Keiichi Shimizu

Hitoshi Kawano

Akiko Saito

Nobuhiko Betsuda

Yusuke Shibahara

Nobuo Shibano

Hiroki Tamai

Makoto Bessho

Junichiro Yamamoto

Toshiya Tanaka

Takeshi Hisayasu

Shigeru Motoki

Michinobu Inoue

Yoshihiro Aonami

Tsutomu Watanabe

Shigeru Osawa

Asuka Wada

Kozo Ogawa

Izuru Komatsu

Daigo Suzuki

Kazuki Tateyama

Ryotaro Matsuda

Shinji Nakata

Yasuhide Okada

Kumiko Ioka

Sigeru Osawa

In a lamp deviceusing a GX53-type capand also using an LEDas a light source, there is regulated an appropriate configuration of a metallic cover. A capand a lighting deviceare arranged on an upper surface side of the metallic cover, and a substrateon which the LEDis mounted is arranged on a lower surface side thereof. The metallic coverhas an approximately cylindrical shape with a maximum outer diameter D of 80 to 150 mm, a height H of 5 to 25 mm, and 2&#x3c0; (D/2) H/W, that is, an area of the outer peripheral surface per gross input power W to the lamp devicebeing in a range of 200 to 800 mm/W. The gross input power W is 5 to 20 W.

Lamp device and lighting fixture including LED as light source and metallic cover

A lighting device may include a substrate attached to one edge side of a radiator and a cover may be attached to cover the substrate. Heat-radiating fins may be provided on the other edge side of the radiator and an air-cooling unit may be rotatably provided inside the heat-radiating fins, thereby enabling freely rotation. In one or more examples, a case storing a circuit part is attached to the other edge side of the radiator and a cap is provided to the case. By the air flow from the air-cooling unit, the heat-radiating fins are caused to be a part of the ventilation path to allow for ventilation of the inside of the radiator.

Lighting device

A luminaire according to embodiments includes a body portion, a light source provided at one end portion of the body portion and having a light-emitting element, a globe provided so as to cover the light source, and a thermal transfer portion thermally joined to at least either one of the globe or a thermal radiating surface of the body portion on the end portion side. Then, an end surface of the thermal transfer portion on the side of the globe is exposed from the globe.

Luminaire

Light emitting diode (LED) bulb

A substrate is attached to one edge side of a radiator and a globe is attached covering the substrate. Heat-radiating fins are provided on the other edge side of the radiator and an air-cooling unit is rotatably provided inside the heat-radiating fins which enables to freely rotate. A case storing a circuit part is attached to the other edge side of the radiator and a cap is provided to the case. By the wind blast from the air-cooling unit, the heat-radiating fins are caused to be a part of the ventilation path to allow for ventilation of the inside of the radiator.

Light emitting diode lamp

The present invention provides a light-emitting element lampcapable of preventing a temperature rise of a substrate, on which light-emitting elementsare mounted, by effectively utilizing a thermally conductive casingand a thermally conductive cover The light emitting element lampincludes a thermally conductive casing, a light source part, a thermally conductive cover, and an insulative cover. The thermally conductive casingincludes an irradiation opening, is formed so as to be widened toward the irradiation opening, has its outer circumferential surface exposed outwardly, and has a substrate mounting partsecured on its inner circumferential surface. The light source parthas a substratehaving the light-emitting elementsmounted thereon and causes the substrateto be thermally coupled to and attached to the substrate mounting partof the thermally conductive casing. The thermally conductive coveris thermally coupled to and connected to the outer circumferential surface of the thermally conductive casingin a surface-contacted state. The insulative coverhas one end side thereof connected to the thermally conductive cover, and the capis connected to the other end side thereof. The lighting circuitcontrols lighting of the light-emitting elementsaccommodated in the insulative cover

Light-emitting element lamp and lighting equipment

In a double bulb type halogen lamp, a sealed space between the inner surface of an outer bulb and the outer surface of the inner bulb in which a coiled filament is disposed is filled with a weak oxidation gas to avoid deoxidation of the optical interference film composed of metal oxide substances exposed to the sealed space.

Double bulb type halogen lamp in which a space between inner and outer

Growing community of inventors

Tokyo, Japan

Takumi Suwa