As shown in FIG. 1H, the difference from the embodiment shown in FIG. 1G is that the first conductor 3301a and the second conductor 3302a extends along the X direction to the one end of each wire 340 adjacent to the electrode, and the first conductor 3301a and the second conductor 3302a are electrically connected to both the LED chip unit 302 and the LED chip unit 304 by wires 350. In other embodiments, for example, the first conductor 3301a is electrically connected to the LED chip unit 302 and the LED chip unit 304 through the wire 350, and the second conductor 3302a may not be electrically connected to the LED chip unit 302/304. By setting conductors on both sides of the LED chip, when the LED filament 300 is bent, it can not only increase the strength of the LED filament 300 but also disperse the heat generated by the LED chips during illumination.
