Light projection device and light projection device for vehicle

A light projection device for vehicle which is mounted on a vehicle and irradiates light ahead of the vehicle, comprising:

• a light source which has a plurality of light emission portions disposed side by side in a predetermined direction;
• a plurality of convex lenses arranged in the same number as the plurality of light emission portions, which focus the light when the light is irradiated from the plurality of light emission portions;
• an optical scanner which has a mirror portion that scans the light passing through the plurality of convex lenses in a direction in which the plurality of light emission portions is arranged, and a drive source that swings the mirror portion;
• and
• a projection lens which is disposed between the plurality of convex lenses and the mirror portion, or disposed in a position to which the light scanned from the mirror portion is projected,
• wherein the plurality of convex lenses is disposed side by side in a predetermined direction at intervals so that the light which is transmitted through and focused by the plurality of convex lenses in a stationary state comes close.