Abstract: A light emitting device includes: a base plate extending in a first direction; a plurality of light emitting units arranged over a front surface of the base plate while being shifted from each other in the first direction, and each including a support body extending in the first direction and a plurality of light sources supported on the support body while being arranged in the first direction; a flow path disposed on a side of the base plate opposite to a side facing the light emitting units to feed air therethrough in the first direction; and a wire electrically connected to at least one of the plurality of the light emitting units, and disposed inside the flow path.

Abstract: A light emitting device includes a light emitting unit including plural light emitting elements arranged in one direction, the light emitting unit being positioned at a predetermined position at both ends in the one direction, the light emitting elements emitting light in a same direction; a dynamic vibration absorber including a weight positioned at a center of the light emitting unit in the one direction and an elastic portion that supports the weight such that the weight is capable of vibrating, the dynamic vibration absorber being attached to the light emitting unit to absorb vibration of the light emitting unit; and an attaching member including a portion inserted in a groove formed in the elastic portion of the dynamic vibration absorber, the portion being used to attach the dynamic vibration absorber to the light emitting unit.

Abstract: A light emitting device includes a light emitting unit including plural light emitting elements arranged in one direction, the light emitting unit being positioned at a predetermined position at both ends in the one direction, the light emitting elements emitting light in a same direction; a dynamic vibration absorber including a weight positioned at a center of the light emitting unit in the one direction and an elastic portion that supports the weight such that the weight is capable of vibrating, the dynamic vibration absorber being attached to the light emitting unit to absorb vibration of the light emitting unit; and an attaching member including a portion inserted in a groove formed in the elastic portion of the dynamic vibration absorber, the portion being used to attach the dynamic vibration absorber to the light emitting unit.

Abstract: A light emitting device includes 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 plural places separated away from each other in the one direction or in a state of extending in the one direction.

Abstract: A light emitting device includes a resin housing that extends in one direction and holds a light emitting unit emitting light upward in a height direction intersecting the one direction, the housing having, on an upper side and a lower side of each of both end portions in the one direction, a positioned portion, which comes into contact with a positioning member in the height direction, and a biased portion, which receives a biasing force from a biasing unit biasing the housing to bring the positioned portion into contact with the positioning member, and a suppressing member that extends in the one direction and is fixed to the housing to suppress deformation of the housing, at least one end portion of the suppressing member in the one direction being interposed between the biased portion and the biasing unit.

Abstract: A light emitting device includes: a base plate extending in a first direction; a plurality of light emitting units arranged over a front surface of the base plate while being shifted from each other in the first direction, and each including a support body extending in the first direction and a plurality of light sources supported on the support body while being arranged in the first direction; a flow path disposed on a side of the base plate opposite to a side facing the light emitting units to feed air therethrough in the first direction; and a wire electrically connected to at least one of the plurality of the light emitting units, and disposed inside the flow path.

Abstract: A light emitting device, includes: a base plate extending in a first direction; multiple light emitting units arranged on a surface of the base plate while being shifted from each other in the first direction, and each including a support body extending in the first direction and multiple light sources supported on the support body while being arranged in the first direction; and a flow path disposed over the surface of the base plate to surround at least part of the light emitting units and allowing air to flow therethrough in the first direction.

Abstract: An exposure device includes: a substrate that includes a plate-shaped main body that extends in one direction, a plurality of light emitting elements that are mounted on one surface of the main body, and a heating element that is mounted on the other surface of the main body generates heat in accordance with a light emitting operation of the light emitting elements; a housing that includes resin and that extends in the one direction, has a frame shape in which a through hole is formed, and to an inside of the through hole of which the substrate is fixed so that a thickness direction of the substrate is a penetrating direction of the through hole; and a suppression member that extends in the one direction, is fitted in the through hole, and suppresses thermal deformation of the housing.

Abstract: An exposure device includes: a substrate that includes a plate-shaped main body that extends in one direction, a plurality of light emitting elements that are mounted on one surface of the main body, and a heating element that is mounted on the other surface of the main body and generates heat in accordance with light emission of the light emitting element; a housing that extends in the one direction, has a frame shape in which a through hole is formed, and to an inside of the through hole of which the substrate is fixed so that a thickness direction of the main body is a penetrating direction of the through hole; and a first contact member that extends in the one direction, and is in contact with at least a portion of the heating element and the main body at a different position in the one direction.

Abstract: An exposure device includes: a substrate that includes a main body extending in one direction, light emitting elements on one surface of the main body, and a heating element on the other surface which generating heat upon emission of the light emitting elements; a housing having a frame shape which a through hole, to an inside of which the substrate is fixed so that a thickness direction of the main body is a penetrating direction of the through hole; a facing member fixed to the housing and opposing to the other surface; and a contact member contacting to the facing member and the heating element. An injection portion to inject a soft member as the contact member is formed between the substrate and the facing member on the facing member or the housing. When viewed a substrate side through the injection portion, the contact member covers partially the heating element.

Abstract: An exposure device includes: a substrate that includes a plate-shaped main body that extends in one direction, a plurality of light emitting elements that are mounted on one surface of the main body, and a heating element that is mounted on the other surface of the main body generates heat in accordance with a light emitting operation of the light emitting elements; a housing that includes resin and that extends in the one direction, has a frame shape in which a through hole is formed, and to an inside of the through hole of which the substrate is fixed so that a thickness direction of the substrate is a penetrating direction of the through hole; and a suppression member that extends in the one direction, is fitted in the through hole, and suppresses thermal deformation of the housing.

Abstract: An exposure device includes: a substrate that includes a plate-shaped main body that extends in one direction, a plurality of light emitting elements that are mounted on one surface of the main body, and a heating element that is mounted on the other surface of the main body and generates heat in accordance with light emission of the light emitting element; a housing that extends in the one direction, has a frame shape in which a through hole is formed, and to an inside of the through hole of which the substrate is fixed so that a thickness direction of the main body is a penetrating direction of the through hole; and a first contact member that extends in the one direction, and is in contact with at least a portion of the heating element and the main body at a different position in the one direction.