Light-emitting apparatus and lighting appliance provided with the same
AssigneeKoninklijke Philips Electronics N.V.
InventorTakaaki Yagi
Life of this patent
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Abstract
A light-emitting apparatus including a substrate, an LED string mounted on the substrate, the LED string in which a plurality of light-emitting diodes D1-D6 are connected in series, a power supply line 13 (13a, 13b) connected in series to the LED string, and a plurality of protection capacitors C (C1-C5), each being arranged between a connection N (N1-N5) between at least one set of light-emitting diodes in the LED string and the power supply line 13 and having an impedance smaller than an impedance between the connection N and an earth.
Claims9
A light-emitting apparatus, comprising:
- 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 protection element arranged between a connection between at least one set of LEDs in the LED string and the power supply path, wherein the impedance of said protection element is smaller than an impedance between the connection and an case ground.
(canceled)
A light-emitting apparatus, comprising:
- 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 protection element arranged between a connection between at least one set of LEDs in the LED string and the power supply path, wherein the impedance of said protection element is smaller than an impedance between the connection and an case ground,
- wherein the power supply path is at least any one of a power supply path on an anode side of the LED string and a power supply path on a cathode side of the LED string.
Dependencies are inferred from the claim text.