Light emitting device

A light emitting device that is to be mounted on a mount surface of a vehicular compartment, the light emitting device comprising:

• a housing having a box shape and including a first section that has an air intake hole and a second section that has an air discharge hole and includes a discharge cavity having the air discharge hole;
• a cooling fan device arranged in the first section;
• and
• a light emitter arranged in the second section and arranged next to the cooling fan device in a first arrangement direction and laterally along the mount surface, the light emitter including
• a board member having a first surface that is opposite the mount surface of the vehicular compartment and a second surface that is an opposite surface of the first surface, the first surface being defined as a portion of the discharge cavity, and
• a first light emitting element mounted on the second surface of the board member, wherein
• the housing includes a top wall and a bottom wall that are opposite each other, the top wall includes a cavity upper wall section near the air discharge hole, the cavity upper wall section is defined as another portion of the discharge cavity, and
• the cavity upper wall section has an opposite surface that faces the first surface of the board member and the opposite surface extends parallel to the first surface of the board member.