A light emitting device comprising: a body including a cavity having first to fourth inner sides (71,72,73,74), wherein the first inner side and the second inner side are disposed perpendicular to the third and fourth inner sides (73, 74); a first lead frame extending from a bottom of the cavity under the first inner side of the cavity; a second lead frame extending from the bottom of the cavity under the second inner side of the cavity; a gap part disposed in the bottom of the cavity and disposed between the first and second lead frames (121, 131); a light emitting chip disposed on the first lead frame; and a protective chip disposed on the second lead frame, wherein the first lead frame includes a first recess portion recessed from the gap part and a second recess portion recessed from an outer surface of the body and the first recess portion has a depth in a direction parallel to the third and fourth inner sides, different from a depth of the second recess portion in the same direction, wherein the body includes first to fourth sides (61,62,63,64), in which the second side is opposite to the first side, and the fourth side is opposite to the third side, wherein a width of the third side and/or the fourth side is twice greater than a width of the first side and/or second side in the body, wherein the body includes a support body disposed under the first and second lead frames (121,131) and connected to the gap part, wherein the support body is disposed in the first recess portion and a width of the first recess portion in a direction perpendicular to the third and fourth inner sides, is the same as a width of the body in the direction, characterized by further comprising: a recess region being convex outward of the body on the third inner side of the cavity; and a first wire connected to the protective chip and the first lead frame and including a part disposed between the light emitting chip and a sidewall of the recess region, wherein the support body and the first recess portion overlap with the recess region in a vertical direction, wherein an interval between a sidewall of the recess region and the light emitting chip in the direction perpendicular to the third inner side, is greater than an interval between the third inner side of the cavity and the light emitting chip in the same direction, wherein the interval between the light emitting chip and the third inner side of the cavity in the direction perpendicular to the third inner side is greater than an interval between the light emitting chip and the fourth inner side opposite to the third inner side of the cavity in the same direction, wherein the light emitting chip is disposed closer to the first, third, and fourth inner sides (71, 73, and 74) than to the second inner side of the cavity. a body including a cavity having first to fourth inner sides (71,72,73,74), wherein the first inner side and the second inner side are disposed perpendicular to the third and fourth inner sides (73, 74); a first lead frame extending from a bottom of the cavity under the first inner side of the cavity; a second lead frame extending from the bottom of the cavity under the second inner side of the cavity; a gap part disposed in the bottom of the cavity and disposed between the first and second lead frames (121, 131); a light emitting chip disposed on the first lead frame; and a protective chip disposed on the second lead frame, wherein the first lead frame includes a first recess portion recessed from the gap part and a second recess portion recessed from an outer surface of the body and the first recess portion has a depth in a direction parallel to the third and fourth inner sides, different from a depth of the second recess portion in the same direction, wherein the body includes first to fourth sides (61,62,63,64), in which the second side is opposite to the first side, and the fourth side is opposite to the third side, wherein a width of the third side and/or the fourth side is twice greater than a width of the first side and/or second side in the body, wherein the body includes a support body disposed under the first and second lead frames (121,131) and connected to the gap part, wherein the support body is disposed in the first recess portion and a width of the first recess portion in a direction perpendicular to the third and fourth inner sides, is the same as a width of the body in the direction, characterized by further comprising: a recess region being convex outward of the body on the third inner side of the cavity; and a first wire connected to the protective chip and the first lead frame and including a part disposed between the light emitting chip and a sidewall of the recess region, wherein the support body and the first recess portion overlap with the recess region in a vertical direction, wherein an interval between a sidewall of the recess region and the light emitting chip in the direction perpendicular to the third inner side, is greater than an interval between the third inner side of the cavity and the light emitting chip in the same direction, wherein the interval between the light emitting chip and the third inner side of the cavity in the direction perpendicular to the third inner side is greater than an interval between the light emitting chip and the fourth inner side opposite to the third inner side of the cavity in the same direction, wherein the light emitting chip is disposed closer to the first, third, and fourth inner sides (71, 73, and 74) than to the second inner side of the cavity.