The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 2013
Filed:
Dec. 24, 2008
Shigeru Osawa, Yokohama, JP;
Kazuto Morikawa, Yokosuka, JP;
Toshiya Tanaka, Yokohama, JP;
Takeshi Hisayasu, Ota-Ku, JP;
Shigeru Osawa, Yokohama, JP;
Kazuto Morikawa, Yokosuka, JP;
Toshiya Tanaka, Yokohama, JP;
Takeshi Hisayasu, Ota-Ku, JP;
Toshiba Lighting & Technology Corporation, Yokosuka-shi, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An object of the present invention is to provide an LED bulb in which temperature of a lighting circuit is suppressed from rising during lighting of an LED so that life time of the lighting circuit is maintained without increasing manufacturing cost of components. According to the invention, an LED modulehaving multiple LEDs surface-mounted thereon is mounted in a heat dissipating unit. Heat generated by the LEDs is dissipated through multiple heat dissipating finsof the heat dissipating unit. A glove, covering the LED module, radiates outward radiant light from the LEDs. A lighting circuitfor lighting the LEDs is incorporated in an inner hollow portionof a caparranged on a side opposite to the gloveof the heat dissipating unit. Accordingly, the heat generated by the LEDs of the LED moduleis mostly dissipated by the heat dissipating unit, thereby suppressing the temperature of the lighting circuit from rising.