The present invention relates to a vehicle-mounted air purifier. A vehicle-mounted air purifier according to the present invention includes M (M >；= 2) photocatalytic panels, each of which is molded in a form of a panel having specified thickness T (T >；= 5) mm by integrating a plurality of silicon component beads coated with a photocatalytic material； a panel arrangement frame part for disposing and fixing the photocatalytic panels to form an air passage in an empty space for flowing air between the M photocatalytic panels and to include a geometric structure in which a distance between panels on a side where air is discharged is smaller than a distance between panels on a side where air is sucked among the distances between the M photocatalytic panels at a certain ratio or more； an ultraviolet (UV) lamp part provided at a specified position on the air passage formed in the empty space between the M photocatalytic panels to emit UV light having a wavelength of 320 nm to 405 nm； a suction part for sucking surrounding air； a fan part for allowing the air sucked through the suction part to flow into the air passage formed in the empty space between the M photocatalytic panels； and a discharge part for discharging purified air to an outside, wherein the purified air includes a component decomposed through a specified chemical reaction based on the catalytic action of the photocatalytic material with which the beads are coated based on the UV emitted from UV lamp part, and the beads constituting the photocatalytic panel flow through the air passage between the M photocatalytic panels by the fan part.본 발명은 차량 거치형 공기청정기에 관한 것으로, 본 발명에 따른 차량 거치형 공기청정기는, 광촉매 물질이 코팅된 복수의 규소 성분 구슬들을 집적하여 지정된 두께 T(T≥5㎜)의 패널 형태로 성형한 M(M≥2)개의 광촉매 패널와, M개의 광촉매 패널 사이에 공기를 유동시키는 빈 공간의 공기 통로를 형성함과 동시에 상기 M개의 광촉매 패널 간 거리 중 공기가 흡입되는 측의 패널 간 거리보다 공기가 토출되는 측의 패널 간 거리가 일정 비율 이상 작은 기하학 구조를 포함하도록 광촉매 패널을 배치 고정하는 패널배치프레임부와, 상기 M개의 광촉매 패널 사이의 빈 공간에 형성된 공기 통로 상의 지정된 위치에 구비되며 320~405nm 파장의 UV(UltraViolet)를
