Light emitting device, exposure device, and image forming apparatus

A light emitting device comprising:

• a light emitting unit in which a resin housing extending in one direction holds a light emitting element emitting light in a light emitting direction intersecting the one direction;
• a suppressing member that extends in the one direction and suppresses deformation of the housing caused by heat, the suppressing member having a linear expansion coefficient different from a linear expansion coefficient of the housing;
• and
• a fixing portion that fixes the housing and the suppressing member to each other at a position overlapping, in the light emitting direction, a neutral axis of the housing or the light emitting unit or a neutral axis of the suppressing member in the light emitting direction, at a plurality of places separated away from each other in the one direction or in a state of extending in the one direction,
• wherein the fixing portion overlaps the neutral axis of the housing or the light emitting unit in the light emitting direction.

A light emitting device comprising:

• a light emitting unit in which a resin housing extending in one direction holds a light emitting element emitting light in a light emitting direction intersecting the one direction;
• a suppressing member that extends in the one direction and suppresses deformation of the housing caused by heat, the suppressing member having a linear expansion coefficient different from a linear expansion coefficient of the housing;
• and
• a fixing portion that fixes the housing and the suppressing member to each other at a position overlapping, in the light emitting direction, a neutral axis of the housing or the light emitting unit or a neutral axis of the suppressing member in the light emitting direction, at a plurality of places separated away from each other in the one direction or in a state of extending in the one direction,
• wherein the suppressing member has a width larger than a width of the housing in a case of being viewed from the one direction.