Patent ID: 9623751
Date: 2017-04-18
CPC Classifications: B60K,G02B

Claim:
1. A head-up display apparatus that projects an image to a surface of a combiner and displays the image superimposed to a front view of the combiner, the combiner being a transparent plate member disposed in front of a driver seat, the head-up display apparatus comprising: a plurality of light emission units that are disposed along one end surface of an upper end surface or a lower end surface of the combiner, and emit light toward an interior of the combiner from the one end surface; a first reflection unit that is disposed near a part of the plurality of light emission units, and reflects the light emitted by the light emission units toward the interior of the combiner, toward a first side end surface that is one side end surface of the combiner; a second reflection unit that is disposed near a part of the plurality of light emission units, and reflects the light emitted by the light emission units toward the interior of the combiner, toward a second side end surface that is a side end surface facing the first side end surface; a first diffusion unit that is disposed in the first side end surface of the combiner, and diffuses the light reaching the first side end surface through the interior of the combiner; a second diffusion unit that is disposed in the second side end surface of the combiner, and diffuses the light reaching the second side end surface through the interior of the combiner; and a driver unit that wherein: the combiner includes an invisible region that is provided within an area of a predetermined distance from the one end surface on which the plurality of light emission units are disposed, the invisible region being not visually recognized by a driver; and the first reflection unit and the second reflection unit each is an air groove provided within the invisible region, and obliquely blocks a traveling direction of the light emitted from the light emission units.