Vehicle including a virtual image optical system in a housing having heat dissipation

A vehicle for displaying a virtual image to a driver, the vehicle comprising:

• a windshield;
• an image display device that includes a backlight and a liquid crystal panel;
• a virtual image optical system that forms an optical path of an image light emitted from the liquid crystal panel by being reflected by the windshield or a projecting target;
• and
• 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 image display device is to be mounted, that accommodates the virtual image optical system;
• an upper cover that covers an upper portion, through which the image light is emitted, of the outer case;
• a bottom cover that covers a bottom portion of the outer case, the bottom cover including
• in a state of being fixed to the outer case, accommodate a bottom surface of the outer case and the image display device so as to isolate the bottom surface of the outer case and the image display device from an external space of the outer housing;
• and
• fins on an outer surface thereof, wherein
• the image display device is mounted to the outer case in a manner that the liquid crystal panel is exposed to an inner space of the outer case and the backlight is exposed to an outside of the outer case, and
• the fins are formed on an outer surface of a surface, which faces the backlight, of the bottom cover;
• a control circuit configured to control the image display device;
• and
• a main substrate equipped with the control circuit, wherein
• the outer case includes, on a surface facing the bottom cover, a substrate holding surface for holding the main substrate, 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 bottom cover.

A vehicle for displaying a virtual image to a driver, the vehicle comprising:

• a windshield;
• a display panel;
• a virtual image optical system that forms a virtual image based on an image light emitted from the display panel by being reflected by the windshield or a projecting target;
• an outer housing that accommodates the display panel 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.