Patent ID: 8480157

Claim:
A vehicle back door having an upper end portion which is coupled to a tailgate opening formed in a back portion of the vehicle, comprising: an inner panel having a window opening and made of a resin material; and, an outer panel placed on the inner panel and having a light-transmitting window portion, the light-transmitting window portion is made of a light-transmitting resin material; wherein, the outer panel is formed such that when the back door is opened, a central portion of the back door in a width direction of the vehicle is higher than each of ends of the back door in the width direction of the vehicle, and linear protrusions integrally connected to the outer panel, and protrude from each of ends of the outer panel in the width direction of the vehicle to the back portion of the vehicle; and, is configured to guide rain water; a spoiler having an upper and lower walls, wherein the upper and lower walls of the spoiler protrude from the upper portion of the outer panel, the upper and lower walls extend in the width direction of the vehicle and are integrally connected to the upper portion of the outer panel, and the upper and lower walls of the spoiler, and a portion of the inner panel are integrally joined together to internally have a space having a closed cross-sectional shape.