LED BULB

WIPO Patent Application WO/2011/111476

A1

With regard to production of a headlight bulb having, as a light source, a light emitting element such as a LED, the problem of illumination and heat release from a single light source, which causes the shortage of light quantity and is disadvantageous to light distribution, is solved. Provided is a headlight bulb which can change the direction of light in upward and downward directions and which can be easily attached or detached. In order to produce a bulb having a point light source, such as a halogen bulb, a reflector for reflecting light from a light emitting element is disposed on the upper portion, and has a shape of a curved cone, so that the distance between the light emitting element and the reflector is minimized. The light emitting element is offset with respect to the center point of the reflector in order to change the direction of light in the upward and downward directions. Furthermore, in order to relieve heat generated from the light emitting element, the reflector, a light emitting element-attached main body, and a support rod for connecting these components are composed of a material having a high thermal conductivity, and heatsinks are disposed above and below the aforementioned components, to improve the heat release performance. The heatsinks are detachably attached.

UMEZAWA HIDEKI (JP)

PCT/JP2011/053072

September 15, 2011

February 15, 2011

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FLAT OUT CO LTD (JP)
UMEZAWA HIDEKI (JP)

F21S8/10; F21V29/00; F21Y101/02

JP2004014197A	2004-01-15
JP2003178612A	2003-06-27
JP2004055168A	2004-02-19
JP2004158294A	2004-06-03
JP2005063754A	2005-03-10
JP2005148505A	2005-06-09
JP3102091U	2004-07-02
JP2008047522A	2008-02-28

ANIYA Setuo et al. (JP)
Ani store Setsuo (JP)

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