led filament and filament led bulbs

Abstract

A LED filament and a LED filament bulb using the same are disclosed. The LED filament includes a carrier, a LED chip disposed on the carrier and a conductive lead connected to the carrier. The conductive lead is electrically connected to the LED chip and includes a lead head portion, a lead tail portion and a lead neck portion connecting the lead head portion with the lead tail portion. A solid body width of the lead neck portion is less than a maximum solid body width of the lead head portion. Because the lead neck portion with reduced solid body width can function as a vulnerable position of the conductive lead, when a stress is applied onto the conductive lead, the lead neck portion would first take action and therefore the bonding location between the lead head portion and the carrier or the carrier itself can be protected.

Description

technical field

[0001] The invention relates to the technical field of LED lighting, in particular to an LED filament and a filament-type LED bulb. Background technique

[0002] A light emitting diode (Light Emitting Diode, LED) is a solid-state semiconductor device capable of converting electrical energy into visible light, which can directly convert electrical energy into light. Because LED light sources have the characteristics of energy saving, long life, and environmental protection, LEDs are an ideal light source to replace traditional light sources and have a wide range of uses.

[0003] Existing filament-type LED light bulbs generally include LED filaments, stems, light-transmitting lampshades such as spherical lampshades, and lamp caps such as threaded lamp caps; wherein, the light-transmitting lampshades and stems are fixedly connected to the lamp caps, and the stems are accommodated in the light-transmitting lampshades And an electrode is arranged on it so as to ...

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