Title:
発光装置及びそれを備える灯具
Document Type and Number:
Japanese Patent JP2013534025
Kind Code:
A
Abstract:
In various embodiments, a light-emitting apparatus is disclosed. In one example, the light-emitting apparatus comprises a substrate, an LED string mounted on the substrate, in which LED string a plurality of LEDs are connected in series, a power supply path connected in series to the LED string, and a plurality of protection elements, each protection element having a first node commonly connected to the power supply path and a second node connected between a pair of the LEDs in the series, wherein the protection elements include capacitors or zener diodes, and an AC impedance of each protection element is smaller than an impedance between the pair of LEDs and a case ground.
Inventors:
Takaaki Yagi
Application Number:
JP2013514826A
Publication Date:
August 29, 2013
Filing Date:
June 16, 2011
Export Citation:
Assignee:
KONINKLIJKE PHILIPS N.V.
International Classes:
H05B37/02; H05B44/00; F21S2/00; F21V19/00; F21V25/10; H01L33/00; F21Y101/02
Domestic Patent References:
| JP2007157969A | 2007-06-21 | |||
| JP2009260311A | 2009-11-05 | |||
| JP2010272846A | 2010-12-02 | |||
| JP2009301952A | 2009-12-24 | |||
| JP2010272846A | 2010-12-02 | |||
| JP2009301952A | 2009-12-24 | |||
| JP2007157969A | 2007-06-21 | |||
| JP2009260311A | 2009-11-05 |
Attorney, Agent or Firm:
Susumu Tsugaru
Fueda Shusen
Fueda Shusen