Patent Publication Number: US-2017356215-A1

Title: Jump suicide prevention device for bridge railings

Description:
TECHNICAL FIELD 
     The present invention relates to a jump suicide prevention device for bridge railings, and more particularly, to a jump suicide prevention device for bridge railings which may effectively prevent an occurrence of an incident of jump suicide using the bridge railings by physically preventing a suicide jumper from jumping over upper portions of the bridge railings installed on a bridge by means of link parts installed on the bridge railings, and a roller part installed to be vertically pivoted at upper portions of the link parts and leg parts. 
     BACKGROUND ART 
     Bridges are a structure that is installed to solve such a problem occurring in a case that a function of a moving passage is hindered by environmental factors such as a river, sea level, or a lake surface, etc. 
     Such a bridge is installed with being apart from the ground or sea so as to have a large difference in a height therebetween depending on characteristics of a location in which the bridge is installed. According to the characteristics of such the bridge, an incident of jump suicide frequently occurs at an upper portion of the installed bridge. Cases of the jump suicide actually occurring and resulting in loss of life are gradually increasing. 
     Conventionally, it has been attempted to prevent the incidents of jump suicides that may occur on the bridge by installing bridge railings on an upper portion of the installed bridge. However, the conventional bridge railings installed on the bridge have a problem that the suicide jumper may easily jump over the bridge railings, such that it is difficult to prevent the incidents of jump suicides. 
     In addition, there are many plans executed as a countermeasure for prevention of the incidents of jump suicides by installing structures, or stickers, etc., on which anti-jump suicide phrases or marks are drawn, or various means able to stabilize the mental state of the suicide jumper around the bridge, thus to prevent the incidents of jump suicides. However, it is difficult to effectively prevent incidents of jump suicides on the bridges. 
     Accordingly, there have been proposed plans such as Patent Document 1 and Patent Document 2 capable of physically preventing incidents of jump suicides on the bridges. However, the conventional jump suicide prevention device disclosed in Patent Document 1 has a problem that, when installing the device on the bridge railings, it is difficult to smoothly install the same along a longitudinal direction of the bridge. In addition, if the rotatably installed rotation bar droops or becomes separated after installation of the device, there is a problem that it is difficult to achieve the original function of the device of preventing the incidents of jump suicides. Further, when the suicide jumper tries to climb up and jump over the upper portion of fences installed on the bridge, it is difficult to achieve the original function of preventing the incidents of jump suicides due to the rotation bar having a configuration capable of rotating also in an outer direction of the bridge. 
     In addition, the conventional jump suicide prevention device disclosed in Patent Document 2 includes rolling parts provided on the bridge railings so as to prevent a person who intends to make a jump suicide from climbing up the bridge railing, such that the suicide jumper climbing up the bridge railing is prevented by the rotation of the rolling parts. However, the conventional jump suicide prevention device such as Patent Document 2 may be specialized and applied only to bridges to which arched structures are applied. In particular, the device is only effective for preventing suicide attempts and for disturbance of the suicide jumper which has climbed on the arched structure, but it is difficult to prevent the accident of the suicide jumper who intends to actually jump over the bridge railings. 
     PRIOR ART DOCUMENT 
     Patent Document 
     [Patent Document 1] Korean Patent Registration No. 10-1490116 (2015 Jan. 30) 
     [Patent Document 2] Korean Utility Model Registration No. 20-0274845 (2002 Apr. 29) 
     DISCLOSURE 
     Technical Problem 
     In order to solve the above-mentioned problems, it is an object of the present invention to provide a jump suicide prevention device for bridge railings which is a device installed at a location for preventing incidents of jump suicides from bridges so as to prevent the incidents of jump suicides on the bridges, and may effectively prevent the incidents of jump suicides using the bridge railings by means of a configuration including link parts installed on the bridge railings, a roller part rotatably connected to the link parts, and leg parts coupled to the link parts so as to control a vertical pivoting of the roller part. 
     In addition, another object of the present invention is to provide a jump suicide prevention device for bridge railings which is configured to prevent a suicide jumper who tries to jump over upper portions of the bridge railings from moving using his or her body by griping leg parts or link parts with hands, and cause the suicide jumper who tries to jump over the upper portion of the bridge railings to fall inside of the bridge railings by flexing in correspondence to a weight of the suicide jumper, such that it is possible to easily perform a maintenance work after installation, maximally reduce a danger of damage, stably and efficiently prevent the incidents of jump suicides, and obtain effects of reducing entire costs for preventing the incidents of jump suicides. 
     Technical Solution 
     In order to accomplish the above objects, there is provided a jump suicide prevention device for bridge railings, including: a pair of link parts disposed so as to face each other on a bridge railing in a longitudinal direction thereof; a roller part which includes rotation parts on opposite sides thereof in the longitudinal direction so as to be rotatably coupled between the link parts in one direction; leg parts which are respectively coupled to lower ends of the link part by fastening members P, and elastic members which are installed between end portions of the link part and the leg part with being interposed therebetween to control vertical pivoting of the link part. 
     Herein, the link part may include: a coupling hole  1  formed in a bar shape at one end thereof in the longitudinal direction; and a fastening hole formed at the other end thereof facing the coupling hole  1  in the longitudinal direction so as to allow the fastening member to be inserted. 
     Further, the roller part may include: a shaft rod installed so as to connect the link parts with each other, while the rotation parts are coupled to the opposite ends thereof; and a roller body which is arranged so as to surround an outer circumference of the shaft rod, and is rotatably coupled to the shaft rod in one direction through the rotation part at an outside thereof. 
     Further, the roller body may be formed in a circular bar shape having a through hole into which the shaft rod is inserted. 
     In addition, the rotation part may be configured to be coupled inside the through hole of the roller body. 
     Further, the roller body may be formed in a circular sphere shape having a through hole into which the shaft rod is inserted, and a plurality of roller bodies may be connected with each other in the longitudinal direction of the shaft rod. 
     Further, the rotation part may include a fixed body which is fixed to the outer circumference of the shaft rod; and a rotating body coupled so as to surround an outer circumference of the fixed body, wherein a latch portion and needle rollers may be provided at a coupled portion between the fixed body and the rotating body, which are configured to allow the rotating body to rotate in one direction about the fixed body. 
     Meanwhile, the shaft rod may include a protrusion formed on one side of the outer circumference thereof; and a fixing hole to which one end of the fastening member passing through the leg part and the link part is fastened and fixed, and the fixed body may include a fitting groove to which the protrusion is fitted; and a through hole through which the fastening member passes to be coupled thereto. 
     Further, the shaft rod may include an insertion portion protruding in a circular protrusion shape at opposite ends in the longitudinal direction thereof, and the fixed body may include an insertion groove formed at one side of the through hole so as to allow the insertion portion be inserted therein. 
     Furthermore, the elastic member may include a spring having a first seat terminal and a second seat terminal which are formed in a bar shape at opposite ends thereof in the longitudinal direction. 
     In addition, the link part may include a first seat groove formed at a portion thereof to be seated at and coupled to one side of the elastic member; and a second seat groove that elongates from one side of the first seat groove to be engaged with the first seat terminal provided at one end of the elastic member. 
     Further, the leg part may include a first insert groove formed at a portion thereof to be seated at and coupled to the other side of the elastic member coupled to the link part, and a second insert groove that elongates from one side of the first insert groove to be engaged with the second seat terminal provided at the other end of the elastic member. 
     In addition, the leg part further may include a seat portion formed therein configured to firmly support the coupled link part when one side of the link part is coupled therewith, and control the pivoting of the link part. 
     Further, the first insert groove may be provided with an insertion hole into which the fastening member to be fastened to the fixing hole of the shaft rod is inserted. 
     Further, the roller part may be formed to have a thickness enough to prevent a suicide jumper who tries to jump suicide by jumping over the bridge railings from gripping the same. 
     Further, the roller part may rotate only in an inner direction of the bridges to be installed. 
     Furthermore, the link part and the leg part installed on the bridge railing may be arranged at an interval so as to prevent a suicide jumper who tries to jump suicide by jumping over the bridge railings from gripping outsides of the link part and the leg part by hands. 
     In addition, the leg part further may include a detection sensor provided on one side thereof, and the detection sensor is connected with a central control unit that receives a signal from the detection sensor through a wire and controls the device. 
     Further, the roller body may include a plurality of lamps, which are illuminated through a power source supplied from an outside, provided inside the through hole thereof, and the roller body is made of a material that allows light of the lamps to be transmitted therethrough. 
     Advantageous Effects 
     The present invention as described above may achieve the following effects. 
     First, by the jump suicide prevention device capable of preventing the suicide jumper from jumping over the upper portion of the bridge railing, it is possible to prevent the incidents of jump suicides using the bridge railings by effectively controlling the movement of the suicide jumper who tries to jump over the upper portion of the roller part by using the configuration of the roller part which rotates while vertically pivoting in correspondence with the body weight of the suicide jumper. 
     Second, even when a plurality of devices are installed and used on the upper portions of the railings installed on the bridge, it is possible to effectively prevent a user from jumping over the upper portion of the roller part by gripping the installed link parts and the leg parts, thus to stably and efficiently prevent the incidents of jump suicides using the bridge railings. 
     Third, even when the suicide jumper tries to jump over the upper portion of the installed roller part, by using the configuration of the roller part which rotates while vertically pivoting in correspondence with the body weight of the suicide jumper, it is possible to cause the suicide jumper to fall inside of the bridge railings. Thereby, even if the engagement of the link part and the leg part or the rotating structure of the roller part is damaged during using after installation, it is possible to prevent the incidents of jump suicides of the suicide jumper only by the rotation of the roller part or the vertical pivoting of the roller part which is not damaged, thus to efficiently prevent the incidents of jump suicides which may occur by failure of the device. 
     Fourth, when installing and using the configuration including the link part, roller part, rotation part, leg part, and elastic member which are formed to be assembled and disassembled between the bridge railings, it is possible to easily assemble and use, and even if any one of the link part, roller part, rotation part, leg part, and elastic member is damaged, it is possible to easily replace the damaged part by a new part and use with increased convenience for using, and obtain effects of reducing production costs. 
     Fifth, since the roller rotatably installed on the upper portion of the bridge railing is configured to rotate in an inner direction of the bridge railing but to be prevented from rotating in an outer direction of the bridge railing, it is possible to prevent the suicide jumper who tries to jump suicide from falling outside the bridge railing to achieve stable use, and effectively prevent the suicide jumper from jumping over the upper portion of the roller part. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIG. 1  is an exploded perspective view illustrating a jump suicide prevention device for bridge railings of the present invention. 
         FIG. 2  is an assembled perspective view illustrating the jump suicide prevention device for bridge railings of the present invention. 
         FIG. 3  is a perspective view illustrating a state in which the jump suicide prevention device for bridge railings according to the present invention is installed and used on a bridge rail. 
         FIG. 4  is an exploded perspective view illustrating by extracting and enlarging major parts of the jump suicide prevention device for bridge railings according to the present invention. 
         FIG. 5  is an enlarged view illustrating by extracting major parts of a rotation part of the jump suicide prevention device for bridge railings according to the present invention. 
         FIG. 6  is an enlarged cross-sectional view illustrating by extracting the assembled major parts of the jump suicide prevention device for bridge railings according to the present invention. 
         FIG. 7  is a view illustrating an operation state in which a link part pivotally coupled to a leg part is vertically pivoted through an elastic member according to the present invention. 
         FIG. 8  is an exploded perspective view illustrating a jump suicide prevention device for bridge railings according to another embodiment of the present invention. 
         FIG. 9  is a perspective view illustrating a state in which the jump suicide prevention device for bridge railings according to another embodiment of the present invention is installed and used on the bridge rail. 
         FIG. 10  is a perspective view illustrating by extracting major parts of a state in which a detection sensor is attached to one side of a leg part according to another embodiment of the present invention. 
         FIG. 11  is a perspective view illustrating by extracting major parts of a state in which lamps are provided inside of a roller part according to another embodiment of the present invention. 
     
    
    
     BEST MODE 
     Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 
     Prior to description, preferably embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in denoting reference numerals to constitutional elements of respective drawings, it should be noted that the same elements will be denoted by the same reference numerals although they are illustrated in different drawings. Furthermore, the terms as used herein are defined by taking functions of the present disclosure into account and can be changed according to the custom or intention of users or operators. Therefore, definition of the terms should be made according to the overall disclosure set forth herein. 
     First, configurations illustrated in  FIGS. 1 to 9  will be described. 
     A jump suicide prevention device of the present invention includes: a pair of link parts  100  disposed so as to face each other on an upper portion of a bridge railing  10 ; a roller part  200  installed inside of the link parts  100  in a longitudinal direction and having rotation parts  300  on opposite sides thereof; leg parts  400  coupled to lower ends of the link parts  100  by fastening members P; and elastic members  500  installed between the ends of the link parts  100  and the leg parts  400  with being interposed therebetween. 
     As illustrated in  FIG. 3 , the link parts  100  are installed to face each other in the longitudinal direction on an upper portion of the bridge railing  10  to which the jump suicide prevention device of the present invention is installed. It is preferable that the link parts are made of a material such as a metal material so as to maintain a firmly coupled state even when the roller part  200  and the rotation parts  300  coupled to the link parts  100  are pivoted. 
     That is, the link parts  100  are coupled with the leg parts  400  installed on the upper portion of the bridge railing  10 , such that it is possible to firmly maintain the position installed on the upper portion of the bridge railing  10 , as illustrated in  FIG. 3 . 
     In addition, as illustrated in  FIGS. 1 to 5 , the link part  100  is formed so as to have a bar shape, and includes a coupling hole  110  formed at one end thereof in the longitudinal direction, and a fastening hole  120  formed at the other end thereof facing the coupling hole  110  in the longitudinal direction. 
     The coupling hole  110  is configured to allow the roller part  200  and the rotation part  300  to be firmly coupled to one side of the link part  100  by using the fastening member P. As illustrated in  FIG. 1 , the fastening member P inserted into the coupling hole  110  passes through the rotation part  300  and is fastened to the roller part  200 , so that the roller part  200  and the rotation part  300  can be located between the link parts  100  which are installed at an interval on the upper portion of the bridge railing  10 . 
     In addition, the fastening hole  120  is configured to allow the leg part  400  to be coupled to one side of the link part  100  through the fastening member P. As illustrated in  FIG. 1 , the elastic member  500  is configured so that one side thereof is seated on one side of the fastening hole  120 . 
     The roller part  200  is coupled to one side of the link part  100  through the fastening member P so as to be rotatably coupled in one direction. 
     As illustrated in  FIG. 4 , the roller part  200  includes: a shaft rod  210  configured to connect the pair of link parts  100  installed so as to face each other, while the rotation parts  300  are coupled to the opposite ends thereof; and a roller body  220  which is arranged so as to surround the outer circumference of the shaft rod  210 , and is rotatably coupled to the shaft rod  210  in one direction through the rotation part  300  at an outside thereof. 
     The shaft rod  210  is disposed so as to pass through the inside of the roller body  220 , and is configured so that the opposite ends thereof are coupled to the rotation parts  300  installed inside of the roller body  220 . 
     At this time, as illustrated in  FIGS. 1 and 4 , the shaft rod  210  includes a protrusion  211  formed on one side of the outer circumference thereof. 
     By such the configuration, when a fixed body  310  of the rotation part  300  is coupled to one side of the shaft rod  210 , the protrusion  211  is inserted into a fitting groove  311  formed in the fixed body  310  to be fitted thereto, such that the rotation part  300  coupled to opposite ends of the shaft rod  210  may be maintained with being firmly coupled to the opposite ends of the shaft rod  210 . 
     In addition, the shaft rod  210  includes insertion portions  213  formed on the opposite ends in the longitudinal direction thereof by protruding in a circular protrusion shape as illustrated in  FIGS. 1 and 4 , such that, in a case of coupling with the fixed body  310  of the rotation part  300 , the insertion portion  213  of the shaft rod  210  is inserted into the insertion groove  313  formed in the fixed body  310 . Therefore, the rotation part  300  may be maintained with being more firmly coupled to the opposite ends of the shaft rod  210 . 
     In addition, as illustrated in  FIG. 1 , the roller body  220  includes a through hole  220   a  formed therein in the longitudinal direction so as to allow the shaft rod  210  to be inserted. In the present invention, the roller body  220  is illustrated and described so as to be formed in a circular bar, it is not limited thereto, but the shape and configuration of the roller body  220  may be variously changed and applied so long as the shaft rod  210  can be smoothly inserted into the roller body  220 , while preventing the suicide jumper who tries to jump suicide using the bridge railing  10  from easily griping the outer circumference of the roller body  220 . 
     In the configuration of coupling the shaft rod  210  and the roller body  220  with each other, even when the roller body  220  is configured so as to rotate in one direction through the configuration of the rotation part  300  which is coupled therein, it is preferable that the shaft rod  210  is configured to not rotate in correspondence with the rotation of the roller body  220 . When the bridge railings  10  are installed on the sea level, in order to prevent the device from being corroded even if being maintained in the installed state for a long period time due to an influence of sea water and used appropriately, it is more preferable that the parts of the inventive device are made of a metal material such as stainless steel, iron, copper, or aluminum in consideration of costs and installation conditions. 
     In addition, as illustrated in  FIG. 5 , the rotation parts  300  coupled to opposite sides of the roller part  200  are configured to be coupled to the opposite ends of the shaft rod  210  of the roller part  200 , then be coupled inside the through hole  220   a  of the roller body  220 . 
     In the above-described configuration, as illustrated in  FIG. 5 , since the shaft rod  210  coupled to the rotation part  300  is firmly coupled with the link part  100  through the fastening member P, an inner portion of the rotation part  300  coupled with the shaft rod  210  is firmly fixed to one side of the link part  100  to not rotate, while an outer portion of the rotation part  300  coupled inside the through hole  220   a  of the roller body  220  is configured to freely rotate. Therefore, as illustrated in  FIG. 5 , the roller body  220  can rotate smoothly about the shaft rod  210  installed therein. 
     For this, the rotation part  300  includes the fixed body  310  firmly coupled to the outer circumference of the shaft rod  210 , a rotating body  320  coupled to the roller body so as to surround an outer circumference of the fixed body  310 , and a latch portion  330  and needle roller  340   s  which are disposed at a coupled portion between the fixed body  310  and the rotating body  320 , which are configured to allow the rotating body  320  to rotate in one direction about the fixed body  310 . 
     The above-described configuration is configured so as to allow the rotating body  320  coupled inside the through hole  220   a  of the roller body  220  to rotate in one direction about the fixed body  310  coupled with the shaft rod  210 . The configuration of the latch portion  330  and the needle rollers  340  for achieving such a configuration is the same as that of the conventional latch structure and needle rollers for allowing the rotating body  320  to rotate only one direction in terms of function and configuration, and therefore will not be described in detail. 
     In addition, as illustrated in  FIGS. 1 and 5 , the fixed body  310  includes the fitting groove  311  to which the projection  211  of the above-described shaft rod  210  is fitted, and a through hole  312  through which the fastening member P inserted into a fixing hole  212  of the shaft rod  210  can be coupled. 
     The above-described configuration is used to more firmly couple the shaft rod  210  and the fixed body  310  with each other. After the protrusion  211  of the shaft rod  210  is fitted to the fitting groove  311  of the fixed body  310 , the fastening member P to be fixed to the fixing hole  212  passes through the through hole  312 , and fastened to the coupling hole  110  of the link part  100  located at one side of the through hole  312 . Thereby, an operator may adjust the fastening member P fastened to the coupling hole  110  to allow the fixed body  310  of the rotation part  300  to not rotate in correspondence with the rotation of the rotating body  320  coupled with the roller body  220 , while the link part  100 , the shaft rod  210  and the fixed body  310  are firmly coupled with each other. 
     Further, since the fixed body  310  includes the insertion groove  313  formed at one side of the through hole  312 , to which the insertion portion  213  of the shaft rod  210  can be inserted, even when the fixed body  310  and the shaft rod  210  are coupled to one side of the link part  100  through the fastening member P, it is possible to prevent the fixed body  310  and the shaft rod  210  from being separated from the link part, thus to maintain more firm coupling therebetween. 
     At this time, in a case of the insertion portion  213  and the insertion groove  313 , the shape of the insertion portion  213  and the insertion groove  313  and the coupling configuration therebetween may be variously changed according to a selection of a user, so long as they have a configuration that does not hinder the coupling of the fastening member P to be coupled to the fixing hole  212  and the through hole  312 , while maintaining the state in which the insertion portion  213  is inserted into the insertion groove  313  to be firmly coupled thereto. 
     In addition, as illustrated in  FIGS. 1 to 4 , the leg part  400  is coupled with the lower end of the link part  100  through the fastening member P. 
     In particular, as described above, the leg part  400  is coupled to the link part  100  with the elastic member  500  interposed therebetween. As illustrated in  FIG. 7 , the link part  100  coupled to one side of the leg part  400  may be coupled to be vertically pivoted through the configuration of the elastic member  500 . 
     In the above-described configuration, the elastic member  500  includes a spring, that is, includes a spring having a first seat terminal  510  and a second seat terminal  520  which are formed in a bar shape at opposite ends thereof in the longitudinal direction. By the above-described configuration, the first seat terminal  510  of the elastic member  500  is engaged to one side of the link part  100 , and the second seat terminal  520  of the elastic member  500  is engaged to one side of the leg part  400 . Therefore, the link part  100  coupled to the leg part  400  is configured to be able to be pivoted about the coupled portion with the elastic member  500 . 
     Further, in order to maintain a state in which the elastic member  500  is smoothly coupled between the leg part  400  and the link part  100 , the link part  100  includes a first seat groove  130  formed at a portion thereof closely contacting with one side of the elastic member  500  to be seated at and coupled to one side of the elastic member  500 , and a second seat groove  140  that elongates from one side of the first seat groove  130  to be engaged with the first seat terminal  510  provided at one end of the elastic member  500 , and the leg part  400  includes a first insert groove  410  formed at a portion thereof closely contacting with the other side of the elastic member  500  coupled to the link part  100  to be seated at and coupled to the other side of the elastic member  500 , and a second insert groove  420  that elongates from one side of the first insert groove  410  to be engaged with the second seat terminal  520  provided at the other end of the elastic member  500 . 
     By the above-described configuration, when the elastic member  500  is coupled between the leg parts  400  and the link part  100 , as illustrated in  FIG. 6 , the first seat terminal  510  of the elastic member  500  is engaged to the second seat groove  140  of the link part  100 , while one side of the elastic member  500  is naturally seated to the first seat groove of the link part  100 , and the second seat terminal  520  of the elastic member  500 , which is located so as to be opposite thereto, is engaged to the second insert groove  420  of the leg part  400 , while one side of the elastic member  500  is seated to the first insert groove of the leg part  400 , such that the elastic member  500  may be maintained with being stably firmly between the leg parts  400  and the link part  100 . By the configuration of the first seat terminal  510  and the second seat terminal  520 , when the link part  100  engaged with the first seat terminal  510  is pivoted, as illustrated in  FIG. 7 , the link part  100  may be returned to an original position by the restoring force of the first seat terminal  510 , using properties of the spring (elastic member) to be returned to an original state. 
     That is, after the leg part  400  and the link part  100  are coupled with each other with the elastic member  500  interposed therebetween, when a pressure due to the weight of a suicide jumper is applied to the upper portion of the roller part  200  coupled inside of the link part  100 , as illustrated in  FIG. 7 , the roller part  200  is lowered and rotated to the inside of the bridge railing  10 . Therefore, a direction of the pressure applied to the roller part  200  is changed due to the weight of the suicide jumper who tries to jump suicide, and thereby, according to the direction change of the pressure, the pressure of the suicide jumper that is applied to the upper portion of the roller part  200  is reduced, and the roller part  200  is returned to the original position by the restoring force of the elastic member  500  coupled between the leg part  400  and the link part  100 . 
     Accordingly, the suicide jumper who tries to jump over the upper portion of the roller part  200  naturally moves in the inner direction of the bridge railing  10  by the rotation of the roller part  200  as illustrated in  FIG. 7 , and the suicide jumper will fall to the inside of the bridge railing  10  by a lifting force of the roller part  200 . 
     In particular, in a case of vertical pivoting of the roller part  200  as described above, when the pressure due to the weight of the suicide jumper is applied to the upper portion of the roller part  200 , the vertical pivoting of the roller part  200  is performed by the pivoting obtained from the configuration of coupling the link part  100  and the leg part  400  through the elastic member  500 . By the above-described configuration, when the weight direction of the suicide jumper applied to the roller part  200  is changed due to the one direction rotation of the roller part  200 , the link part  100  and the leg part  400  are returned to their original positions form a bent state thereof through the elastic member  500 , as illustrated in  FIG. 7 , and thereby the vertical pivoting of the roller part  200  occurs. 
     In addition, when one end of the link part  100  is coupled to the leg part  400 , as illustrated in  FIGS. 1 to 4  configured to firmly support the coupled link part  100 , and control the pivoting of the link part  100 , the leg part further includes a seat portion  430  formed therein. 
     As illustrated in  FIG. 4 , the seat portion  430  is configured so as to allow one side of the link part  100  coupled with the leg part  400  to be tightly coupled, and a pivoting angle of the pivoted link part  100  to be controlled, when the link part  100  is pivoted about the coupled leg part  400 . 
     By the above-described configuration, even when the roller part  200  is operated to be vertically pivoted due to the weight of the suicide jumper, it is possible to prevent the link part  100  from being excessively lowered or raised from one side of the leg part  400 . Thereby, it is possible to prevent the link part  100  and the leg part  400  from being damaged, and thus, prevent the jump suicide prevention device from being damaged. 
     Further, as illustrated in  FIG. 4 , the first insert groove  410  of the leg part  400  is provided with an insertion hole  421  into which the fastening member P to be fastened to the fixing hole  212  of the shaft rod  210  can be inserted. Therefore, by fastening the fastening member P from one side of the leg part  400 , the elastic member  500 , the link part  100 , the rotation part  300 , and the roller part  200  may be sequentially coupled to the one side of the leg part  400 . 
     Further, as shown in  FIGS. 8 and 9  that illustrate a configuration of roller bodies  220  connected to a shaft rod  210  inside a pair of link parts  100  according to another embodiment of the present invention, the roller body may be formed in a circular sphere shape having a through hole  220   a  into which the shaft rod  210  can be inserted, and a plurality of roller bodies may be connected with each other in the longitudinal direction of the shaft rod  210 . Therefore, according to this embodiment of the present invention, it is also possible to prevent the suicide jumper from jumping over the upper portion of the roller body  220  by the rotation of the plurality of roller bodies  220  coupled to the shaft rod  210 , without applying the configuration of the rotation part  300  to be coupled with the shaft rod  210 . 
     However, the roller bodies  220  applied to another embodiment of the present invention as illustrated in  FIG. 9  have a configuration that cannot maintain the one direction rotation, and the configuration of applying the roller bodies  220  may be appropriately changed and applied thereto according to a selection of the user. 
     Meanwhile, as illustrated in  FIG. 10 , the leg part  400  may be configured in such a manner that a detection sensor  600  is provided on one side thereof, and the detection sensor  600  is connected with a central control unit  700  that receives a signal from the detection sensor  600  through a wire and controls the device. 
     The above-described configuration may be used to efficiently detect an installation position of the roller parts  200  which are installed according to the present invention, thus to efficiently detect the suicide jumper who tries to jump suicide. The detection sensor  600  may include and use a sensor that can detect a motion from a human body, or a sensor that can detect the position of the link part  100  to be coupled with the leg part  400 . 
     Further, although not illustrated and described in detail in the present invention, as a configuration which receives a signal from the detection sensor  600  to perform a follow-up action according to the confirmed location of the suicide jumper, the controller  700  of the present invention may be configured to receive a signal from the detection sensor  600  and display the signal to an outside. Of course, the configuration may perform the same function as a control room capable of controlling such the control unit  700 . 
     In addition, as illustrated in  FIG. 11 , the roller body  220  includes a plurality of lamps  800 , which are illuminated by a power source supplied from an outside, provided inside the through hole  220   a  of the roller body  220 , the roller body  220  may be made of a material that allows light of the lamps  800  to be transmitted therethrough. 
     The above-described configuration is used for improving an entire aesthetic sense of the bridge railing  10  on which the jump suicide prevention device of the present invention is installed through the illumination of the lamps  800 , while preventing a deterioration in the aesthetic sense of the bridge due to a change in an appearance of the bridge even when the jump suicide prevention device of the present invention is installed on the bridge railing  10 . 
     In the above description, although the jump suicide prevention device of the present invention is described so as to be applied to and used for the bridge railing  10 , but it is not particularly limited thereto, and the device may be applied to a built structure having a distance from the ground, such as a veranda of apartments, a flat roof, or buildings, so as to prevent safety accidents of children and elderly people, and prevent the incidents of jump suicides from the apartments, buildings, or the like 
     While the present invention has been illustrated and described with reference to the specific embodiments, it will be understood by those skilled in the related art that various modifications and variations may be made therein without departing from the scope or gist of the present invention as defined by the appended claims. 
     INDUSTRIAL APPLICABILITY 
     According to the present invention, in order to effectively prevent an occurrence of the incidents of jump suicides using the bridge railings by physically preventing the suicide jumper from jumping over the upper portion of the bridge railings installed on the bridge by means of the link parts installed on the bridge railings, and roller parts installed to be vertically pivoted at upper portions of the link parts and leg parts, when installing the jump suicide prevention device for bridge railings on the bridge railing, it is anticipated that the social loss due to the activation of the facility investment industry and the suppression of the jump suicide may be reduced.