Patent ID: 11953681
Assignee: MAXELL, LTD.
Field: Optics (Instruments)
Classification: CPC G  B  H | IPC B  G

Claim 10:
11. A head up display for displaying a virtual image to a driver, the head up display comprising:
a display panel;
a virtual image optical system that forms a virtual image based on an image light emitted from the display panel;
an outer housing that accommodates the image display device and the virtual image optical system, wherein
the outer housing includes:
an outer case, to which the display panel is to be mounted;
a first cover including an opening through which the image light is emitted; and
a second cover, wherein the second cover includes fins on an outer surface thereof;

a control circuit configured to control the display panel and a main substrate equipped with the control circuit;
a substrate holding surface for holding the main substrate on a surface facing the second cover; and
a heat conductive portion having a thermal conductivity higher than that of air between the control circuit on the main substrate held by the substrate holding surface and the second cover.