Exemplary embodiments of the present invention relate to an LED lamp including a substrate, a first LED, a second LED, a heat sink, and a transparent cover. The first LED is arranged on a first surface of the substrate. The second LED is arranged on a second surface of the substrate, the second surface being an opposite side of the substrate from the first surface. The heat sink has a mounting surface on which the substrate is arranged. The heat sink also has a reflection surface. The transparent cover covers the substrate, the first LED, and the second LED.