HEADLAMP DEVICE

To provide a headlamp device (50, 50A, 50C) and a leaning vehicle (10, 10A, 10C) including the headlamp device (50, 50A, 50C), the headlamp device being for use in a leaning vehicle having a front cover (22) that is arranged so as to cover the headlamp device (50, 50A, 50C) in a front view of the vehicle, the headlamp device (50, 50A, 50C) including a headlamp (60, 60L, 60R) and a left-right pair of cornering lamps (70L, 70R, 70LA, 70RA, 70LB, 70RB, 70LC, 70RC), the headlamp device being capable of allowing the front cover (22) to be compact while suppressing concentration of heat emitted from a light source of the headlamp and from respective light sources of the left-right pair of cornering lamps. A headlamp includes a headlamp housing (64, 64A, 64C) disposed inside a front cover (22). A pair of cornering lamps (70L, 70R, 70LA, 70RA, 70LB, 70RB, 70LC, 70RC) each includes a cornering lamp housing (76, 76A) disposed inside the front cover (22). The cornering lamp housing (76, 76A) is provided as a member different from the headlamp housing, and is arranged separately from the headlamp housing.