A led corn bulb or light is named for its appearance as it looks very similar to the corncob. It has straight lines of light diodes attached on its tube. There are approximately 80 – 108 led lights a normal cob, depending on the bulb size and style requirements. These lights are a perfect substitute to metal halide and HID lamps. Typically, these lights are used for purposes such as high-bay lighting, street lighting, and parking areas!