| 摘要 |
A lamp unit (10) for forming a light distribution pattern (30) having a given cutoff line (CL1,CL2,CL3) in an upper end portion thereof, includes a light source (12), and a transparent member (20) which receives light from the light source (12) from rearward of the transparent member (20) and projects the light distribution pattern (30) forward of the transparent member (20). The transparent member (20) includes a front surface (20a), a rear surface (20b), and a rearward incident surface (20c) which faces the light source (12). The transparent member (20) reflects, by the front surface (20a), the light that enters the transparent member (20) from rearward of the transparent member (20), then reflects again the light forward of the transparent member (20) by the rear surface (20b), and then radiates the light from the front surface (20a). The lamp unit (10) further includes a light shade (34) provided between the light source (12) and the transparent member (20) to shade the light going from the light source (12) directly toward the rear surface (20d) of the transparent member (20), or the incident surface (120d) is configured to refract, toward the front surface (20a), the light going from the light source (12) directly to the rear surface (120b) the lamp unit (10). |
