referring to fig1 and 2 , a lift upright post device with multidirectional joints according to the present invention comprises an upright post 1 , a lifted device 6 and a spacing board 7 . wherein , the upright post 1 is elongated with homogeneous cross section and the periphery thereof has a plurality of engaging slide grooves 11 with an outer opening 111 along each of the slide grooves 11 . in fact , the upright post 1 basically is the same as that disclosed in u . s . patent application ser . no . 10 / 002 , 228 filed by the present inventor so that it is mentioned here as a reference . that is , each of the engaging slide grooves 11 at two inner lateral sides thereof has a side groove 112 respectively so as to be inserted with and locate two side juts 23 of an insert bar 2 such that a front arctic projection 21 thereof can be located at the outer opening 111 with a line of equidistantly longitudinally disposed hanging holes 22 . besides , the upright post 1 at the upper and the lower ends thereof has two opposite lock pins 3 inserted in two of the engaging slide grooves 11 and a relay piece 5 is connected to each of the lock pins 3 and the corresponding lock pin 3 in a neighboring upright post 1 to form a frame . thus , a panel board can be held by the relay pieces 5 ( not shown ) to form a screen . further , the upright post 1 at the center thereof is provided with an axial through hole 12 for being passed by wires and the upper and the lower ends thereof are attached with a top end piece 13 and a bottom end piece 14 to block the openings thereon . an adjustable leg 15 is connected to the bottom of the upright post 1 so that the upright post 1 can be adjusted the elevation thereof . the lifted device 6 is a sleeve type extension device such as an air or hydraulic cylinder or a cylinder associated with a sleeve , a spring and a lever . as shown in fig1 and 2 , the lifted device 6 is a cylindrical pipe ( slide part ) fitting with a lever ( stationary part ) 62 , which is received in one of the engaging slide grooves 11 between another two of the engaging slide grooves 11 attached with the lock pins 3 . the lever 62 at the lower end thereof is a fixing end 621 , which passes through the bottom end piece 14 and is fastened with a nut 622 to form a stationary part . the cylindrical pipe 61 at the upper and the lower ends thereof has a pivot 611 joined to the spacing board 7 such that it is possible for the spacing board 7 can be lifted or descended with cylindrical pipe 61 along the engaging slide groove 11 . the spacing board 7 is disposed and taken in a frame enclosed by two upright posts . in practice , the spacing board 7 can be a writing board such as an electronic whiteboard , a display panel or an illumination panel so that characters or pictures can be shown on the board or an effect of illumination can be performed . besides , the spacing board 7 can be applied to a counter in a bank or a commercialized counter or used for a dressing table in a beauty salon as a lifted mirror . in order to protect the upper and the lower sides of the spacing board 7 , a t shaped edge sealing plate 71 can be used as a side cover respectively . the upper side thereof is provided with a lock 72 and the lock 72 extends laterally a key plug 721 to engage with a preset engaging hole 31 in the respective engaging pin 3 such that the spacing board 7 can be fastened firmly and it becomes unable to be lifted . once the lock 72 is unlocked , the cylindrical pipe 61 is free from being caught and moves upward along the engaging slide groove 11 to allow the spacing board 7 lifting synchronously so as to attain an expected effect . further , an upper cover 73 can be connected to the upper side of the spacing board 7 for a purpose of beautification . referring to fig1 to 4 again , in order to form a table , two brackets 24 with tenons thereof are engaged to corresponding hanging holes 22 in the two insert bars 2 such that the table board 25 can be placed on the two spaced apart brackets 24 to constitute a firmer connection with the relay piece 5 with a forked upper joining piece 26 at an end thereof having hooks 261 to engage with the relay piece 5 . further , the upper joining piece 26 at a lateral side thereof extends a stretch plate 262 to be inserted into the relay piece 5 and a screw passes through the upper joining piece 26 so as to be fastened to the table board 25 so that the table board 25 can be effectively supported in place horizontally . as soon as the table is set up , the configuration thereof is as shown in fig5 . besides , in order to set up an open type office system furniture as shown in fig5 a plurality of upright posts 1 and table boards 25 can be used to be associated with each other . moreover , once the spacing board 7 is lifted , a screen system can be formed . further , a conference room or private space can be formed without any sight obstacle based on the actual need as desired . it is appreciated that the advantages of the present invention are listed hereinafter : 1 ) the lifted upright post device with multidirectional joints of the present invention can be assembled fast and located accurately . due to all parts thereof having been designed with modularization and the parts being fixed by way of insertion , the upright post device is possible to be set up fast and flexibly to reach the best effect during the assembly job being performed . 2 ) the lifted upright post device with multidirectional joints of the present invention provides a function of multiple direction stretching . the upright post is specially designed so that it is possible to have a function of performing multiple direction extensions easily under a condition of not switching the upright post . 3 ) the upright post device with multidirectional joints of the present invention has a function of extending the spacing board thereof so that the spacing board can be selectively lifted to form a screen system or an open space so as to offer a communication environment for human relationship . 4 ) the upright post device with multidirectional joints of the present invention can be detached or assembled easily . the purpose for lifting and descending the spacing board can be reached even if the parts thereof are simply fabricated . further , the parts can be reused over and over again after being detached so that the pursuit of environmental protection can be actually achieved . while the invention has been described with reference to a preferred embodiment thereof , it is to be understood that modifications or variations may be easily made without departing from the spirit of this invention , which is defined in the appended claims .