Heads-up display device

1. A head-up display device comprising:

a projector that projects light;

a mirror that reflects the light projected from the projector, and has a first side and a second side on a reverse side of the mirror from the first side;

a combiner which receives the light reflected by the mirror;

a housing that includes an opening region through which the light reflected by the mirror passes when the combiner receives the reflected light, and houses the projector and the mirror; and

a cover including a first cover member and a second cover member, and covering the opening region,

wherein the first cover member is rotationally movable with respect to the housing around a first rotation fulcrum fixed to the housing, and includes a first end part and a second end part on a same side with respect to the first rotation fulcrum,

the second cover member is rotationally movable with respect to the first cover member around second rotation fulcrums respectively fixed to the first end part and the second end part,

the second cover member includes a first side that is located closest to the first rotation fulcrum and faces the first cover member when the first cover member and the second cover member cover the opening region, and

when the first cover member turns with respect to the housing and the second cover member turns with respect to the first cover member, the first end part is located on an outer side than the first side of the mirror, the second end part is located at an outer side than the second side of the mirror, and the second cover member is not present in an optical path of the light projected from the projector to the mirror.

2. The head-up display device according to claim 1 ,

wherein the second cover member includes:

a first locking portion provided in a vicinity of the first end part; and

a second locking portion provided in a vicinity of the second end part,

when the first cover member and the second cover member cover the opening region, the first locking portion and the second locking portion are locked into an end part located in the opening region of the housing, respectively, and

when the first cover member turns with respect to the housing, the first locking portion and the second locking portion are locked into a bottom part of the housing, so that a part of the second cover member is pushed toward the bottom part of the housing, and the second cover member rotationally moves with respect to the first cover member around the second rotation fulcrums.

3. The head-up display device according to claim 2 ,

wherein the second cover member further includes a third locking portion in a vicinity of the first side of the second cover member,

the first cover member includes a side facing the first side of the second cover member when the first cover member and the second cover member cover the opening region,

when the first locking portion and the second locking portion are locked into the end part located in the opening region of the housing, the third locking portion is brought into contact with a vicinity of the side of the first cover member, and

when the first locking portion and the second locking portion are locked into the bottom part of the housing, the third locking portion is brought into contact with the bottom part of the housing.

4. The head-up display device according to claim 3 ,

wherein the cover further includes a biasing portion that biases the second cover member toward an outside of the housing when the first cover member and the second cover member cover the opening region.