Title:
SPOT LIGHT SOURCE AND BULB-TYPE LIGHT SOURCE
Document Type and Number:
Japanese Patent JP2011175978
Kind Code:
A
Abstract:
To provide a spot light source that can replace conventional halogen lamps in a mode in which leakage light is actively used.
The spot light source 1 includes: a case 11, a heat radiator 12 and a light-emitting part 18, wherein the heat radiator 12 is formed in a bowl-like shape by a bottom part 12a and a side part 12b that extends from the outer edge of the bottom part 12a, and the side part 12b is composed of a light-permeable ceramic material. Outgoing light from an LED element 18b that is provided in the light-emitting unit 18 is guided toward the side part 12b by means of a lens 18d to generate the leakage light to the side of the spot light source 1. Thus, high decorativeness can be created.
Inventors:
KAWAGOE SHINYA
HASHIMOTO HISATAKA
KOJIMA TOSHIYASU
AZUMA MASANORI
HASHIMOTO HISATAKA
KOJIMA TOSHIYASU
AZUMA MASANORI
Application Number:
JP2011105276A
Publication Date:
September 08, 2011
Filing Date:
May 10, 2011
Export Citation:
Assignee:
PANASONIC CORP
International Classes:
F21S2/00; F21V7/00; F21V7/22; F21V19/00; F21V29/505; F21Y101/02
Domestic Patent References:
| JP2007059930A | 2007-03-08 |
Foreign References:
| US20060274529A1 | 2006-12-07 | |||
| DE102004024599A1 | 2005-12-08 | |||
| WO2008157080A2 | 2008-12-24 |
Attorney, Agent or Firm:
Shiro Nakajima
Kobayashi Kunito
Koji Kawabata
Koichi Kimura
Kobayashi Kunito
Koji Kawabata
Koichi Kimura