An articulation type supporter for seat of a means of transportation, comprising: a fixing bracket which is at a base frame which forms a seat; a back cover which allows the top of the fixing bracket to be exposed to the outside, and including an accommodation unit, wherein the back cover is formed at a backside of the seat; a swivel unit which is installed on the top of the fixing bracket and is arranged rotatable in a horizontal direction, characterized in that the supporter furthermore comprises a first arm one end of which is connected through a first hinge unit to the swivel unit which protrudes to the top of the fixing bracket and the other end of which is arranged rotatable in upward and downward directions; a second arm one end of which is connected through a second hinge unit to the other end of the first arm, whereupon the other end of which can be folded or unfolded on the first arm while being rotatable upward and downward; and a support plate the front side of which is connected through a ball joint to the other end of the second arm, wherein an article is supported on a backside thereof, and wherein the first hinge unit is configured in such a way that includes: a first connection member which is connected with the top of the swivel shaft protruding toward the top of the fixing bracket and is installed at an end of one side of the first arm, the first connection member formed in a single pipe-shape wherein the direction of the pipe formation is horizontal; a first clutch bearing which is installed at the first connection member in such a way that if a weight applies to the first arm, the rotation of the first arm is prevented in the direction of the weight while corresponding to the weight, and the rotation of the first arm is permitted in the opposite direction, a first hinge shaft which is arranged passing through the center of the first clutch bearing, a first bridge which is inserted into the first hinge shaft and is connected with the first arm, and a first brake unit which is configured in such a way that if a force smaller than a previously set weight applies, the rotation of the first arm is prevented in the direction of the weight, and if a force larger than a previously set weight applies, the rotation of the first arm is permitted in the direction of the weight. a fixing bracket which is at a base frame which forms a seat; a back cover which allows the top of the fixing bracket to be exposed to the outside, and including an accommodation unit, wherein the back cover is formed at a backside of the seat; a swivel unit which is installed on the top of the fixing bracket and is arranged rotatable in a horizontal direction, characterized in that the supporter furthermore comprises a first arm one end of which is connected through a first hinge unit to the swivel unit which protrudes to the top of the fixing bracket and the other end of which is arranged rotatable in upward and downward directions; a second arm one end of which is connected through a second hinge unit to the other end of the first arm, whereupon the other end of which can be folded or unfolded on the first arm while being rotatable upward and downward; and a support plate the front side of which is connected through a ball joint to the other end of the second arm, wherein an article is supported on a backside thereof, and wherein the first hinge unit is configured in such a way that includes: a first connection member which is connected with the top of the swivel shaft protruding toward the top of the fixing bracket and is installed at an end of one side of the first arm, the first connection member formed in a single pipe-shape wherein the direction of the pipe formation is horizontal; a first clutch bearing which is installed at the first connection member in such a way that if a weight applies to the first arm, the rotation of the first arm is prevented in the direction of the weight while corresponding to the weight, and the rotation of the first arm is permitted in the opposite direction, a first hinge shaft which is arranged passing through the center of the first clutch bearing, a first bridge which is inserted into the first hinge shaft and is connected with the first arm, and a first brake unit which is configured in such a way that if a force smaller than a previously set weight applies, the rotation of the first arm is prevented in the direction of the weight, and if a force larger than a previously set weight applies, the rotation of the first arm is permitted in the direction of the weight. a first connection member which is connected with the top of the swivel shaft protruding toward the top of the fixing bracket and is installed at an end of one side of the first arm, the first connection member formed in a single pipe-shape wherein the direction of the pipe formation is horizontal; a first clutch bearing which is installed at the first connection member in such a way that if a weight applies to the first arm, the rotation of the first arm is prevented in the direction of the weight while corresponding to the weight, and the rotation of the first arm is permitted in the opposite direction, a first hinge shaft which is arranged passing through the center of the first clutch bearing, a first bridge which is inserted into the first hinge shaft and is connected with the first arm, and a first brake unit which is configured in such a way that if a force smaller than a previously set weight applies, the rotation of the first arm is prevented in the direction of the weight, and if a force larger than a previously set weight applies, the rotation of the first arm is permitted in the direction of the weight.