| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the thickness of a head-up display lamp and prevent the reflection of an image of a component of the head-up display lamp on a front window by external light, etc. <P>SOLUTION: The head-up display lamp 1 is disposed below a front window 93 of a vehicle. The head-up display lamp 1 includes a light guide plate 30 and a light source 20. The light guide plate 30 includes: an incident surface 31 which counters to the light source 20 and receives light emitted from the light source 20; a light-outgoing surface 32 which extends backward from the upper edge of the incident surface 31, sloping and rising backward, thus forming a concave surface; a reflection surface 33 which extends backward from the lower edge of the incident surface 31 and is counter to the light-outgoing surface 32; and a plurality of dots 37 which are formed on the reflection surface 33 and reflect and scatter light having fallen onto the incident surface 31. <P>COPYRIGHT: (C)2012,JPO&INPIT |
