Toshiba Lighting & Technology Corporation

Harison Toshiba Lighting Corporation

Takao Mizukami

Yuji Wagatsuma

Ryuji Tsuchiya

Masaharu Baba

Naoki Tsutsui

Yoshinori Sato

Junichi Kinoshita

Tsuneo Nakayama

Kiyoshi Matsunaga

Naoki Matsuoka

Norihiko Ochi

Yasuhiro Nieda

Akihiko Komatsuzaki

Masako Nakamura

A package for light emitting element including a package main bodyhaving a bottom faceon which a light emitting elementis arranged, and a concave portionwhich is formed in an inverted truncated cone shape by an inner wall faceintersecting with the bottom facewith a predetermined angle, and a translucent memberfilled in the concave portionof the package main body, the angle between the inner wall facecomposing the concave portionand the bottom faceis selected within &#xb1;15&#xb0; of the incident critical angle in which a direct light radiated from the light emitting elementundergoes total reflection at the interface between the translucent memberand air.

Package for light emitting element and manufacturing method thereof

A lighting device controls power to a discharge lamp according to the temperature detected by a lamp sensor, which detects temperature around the discharge lamp. The discharge lamp has an arc tube and an outer bulb between which an airtight space is defined. Therefore, the lamp can be actuated without reduction in luminosity even at low temperatures. Also, the lamp luminosity rises quickly.

Lighting device and display equipment

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

Growing community of inventors

Kanagawa-ken, Japan

Takao Mizukami