发明名称 |
LIGHTING DEVICE |
摘要 |
PROBLEM TO BE SOLVED: To provide a lighting device of bulb type having a wide luminous intensity distribution irrespective of a simple structure inside a globe.SOLUTION: A circuit board 44 included in a lighting device has a surface mounted LED device 42 mounted in the central part and a side light-emitting LED device 43 mounted in a periphery part. This surface mounted LED device 42 has a strong luminous intensity distribution in a vertical direction of the circuit board 44, and the side light-emitting LED device 43 has a strong luminous intensity distribution in a horizontal direction of the circuit board 44. As a result, the bulb-type LED lamp 40 (lighting device) has a simple structure inside the globe 41 while having a wide luminous intensity distribution. |
申请公布号 |
JP2013182857(A) |
申请公布日期 |
2013.09.12 |
申请号 |
JP20120047837 |
申请日期 |
2012.03.05 |
申请人 |
CITIZEN HOLDINGS CO LTD;CITIZEN ELECTRONICS CO LTD |
发明人 |
IWAI TAKAE;KAYANUMA YASUAKI |
分类号 |
F21S2/00;F21V19/00;F21Y101/02;H01L33/00 |
主分类号 |
F21S2/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|