Bumper spoiler in a device for reducing air resistance of vehicle

A device for reducing air resistance of a vehicle, comprising:

• a front bumper of the vehicle having a first mounting hole and a second mounting hole;
• a bumper spoiler to be mounted on the front bumper;
• and
• a mounting piece for fixing the bumper spoiler to the front bumper;
• wherein
• the bumper spoiler comprises a main body section and a mounting base section, the mounting base section protruding from a reverse side of the main body section;
• the main body section is made of elastic material;
• the mounting base section is made of rigid material harder than the main body section, the rigid material capable of being elastically deformed;
• the main body section and the mounting base section are integrally joined to each other;
• the mounting base section has a first mounting section and a second mounting section;
• the first mounting section is inserted into and elastically engaged with the first mounting hole, thereby being temporarily fixed to the front bumper;
• and
• the second mounting section is inserted into the second mounting hole so that the second mounting section is finally fixed to the front bumper by the mounting piece.