发明名称 |
BULB - SHAPED LED LIGHT SOURCE |
摘要 |
[Problem] To provide a bulb-shaped LED light source with which the luminance uniformity ratio on an outer tube globe is improved, in other words with which the occurrence of light non-uniformities can be reduced, without reducing efficiency. [Means of overcoming the problem] The bulb-shaped LED light source according to the present invention is characterized in that at least n (a natural number of 4 or more) LED elements (4) are arranged within an outer tube globe (5) in a substantially planar fashion; each LED element (4) has a light distribution angle of at least 60° and 120° or less; the light distribution areas inside a light distribution angle within which each LED element (4) illuminates light onto the inner surface of the outer tube globe (5) are made to overlap; and a part of the overlap comprises n overlapping light distribution areas, and the n overlapping light distribution areas comprise at least 10% and no more than 80% of the inner surface of the outer tube globe (5). |
申请公布号 |
EP2649364(B1) |
申请公布日期 |
2015.07.15 |
申请号 |
EP20110790589 |
申请日期 |
2011.11.23 |
申请人 |
OSRAM GMBH |
发明人 |
KONOMOTO, TAKAHIRO;NOGUCHI, TAKASHI;OSAWA, TAKASHI |
分类号 |
F21K99/00;F21V3/00;F21V3/04;F21V29/77;F21Y101/02;F21Y105/00 |
主分类号 |
F21K99/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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