As an improvement of a portable anion air cleaner,The utility model relates to a portable negative ion air cleaner, which is connected with a conductive switch by hand.In order to increase the quantity of negative ion emission, the potential difference of human body circuit is increased.It will be inconvenient to operate the contact continuously for a long time.To improve the design,For a housing body containing a circuit board and a battery,A switch is arranged on the shell body to start the power supply.The utility model has a negative ion release hole adjacent to the negative ion emission end and a conductive neck ring contact switch which can be sleeved on the neck.The collar contact switch is connected to the positive terminal of the power supply by conducting wire.Switch on the power supply.It can promote the negative ion emission circuit in the shell seat to cause negative ion emission from the hair of the negative ion emission terminal.And it's released from the anion releasing hole.And when the user is placed on the neck,The neck can be continuously contacted with the conductive material of the collar contact switch.Using the human body as a circuit,To increase the potential difference,For a long time, the number of negative ion emission at the negative ion emission end is continuously increased.In order to continuously improve the effectiveness of air purification practical convenience creators.本創作為有關一種隨身攜帶式負離子空氣清淨器之改良，乃係針對隨身攜帶式負離子空氣清淨器以手觸接導電開關，並利用人體迴路加大電位差以增加負離子發射數量，會有長時間持續操作觸接之不便困擾，致再加以改良設計，為於一內容置有電路板及電池的殼座體，在殼座體上設有一開關可供電源啟動，並具有一鄰近負離子發射端頭之負離子釋放孔洞及一可供套置於頸部之導電材質頸圈觸接開關，而頸圈觸接開關為以導電材質導線連接至電源正電端，藉開關啟動電源，可促使殼座體內負離子發射電路致使負離子發射端頭發射負離子，而由負離子釋放孔洞釋出，且當使用者套置於頸部時，則可以頸部持續觸接頸圈觸接開關之導電材質，而利用人體為迴路，促使其加大電位差，長時間無負擔持續增大負離子發射端頭負離子發射之數量，以持續提升空氣清淨效用之實用便利創作者。
