Title:
ON-VEHICLE AIR CLEANER
Document Type and Number:
Japanese Patent JP3298118
Kind Code:
B2
Abstract:
PURPOSE: To provide the on-vehicle air cleaner capable of accurately detecting a dirt condition of the filter irrespective of the brightness in the vehicle and carrying out the replacement display.
CONSTITUTION: This cleaner is constituted of a dirt detection means 1 for detecting dirt in a vehicle, the 1st timer 2 for clocking the time, the 2nd storage means 3 for storing plural prescribed values, the 3rd storage means 4, a control means 6 for inputting and processing the output signals of the 2nd storage means 3, the dirt detection means 1 and the 1st timer 2, the 1st storage means 5 for storing the output of the control means 6, a comparison means 7 for comparing the output values of the 1st storage means 5 and the 3rd storage means 4, and a display means 8 for displaying by the output of the comparison means 7. Thereby, since the elapsed time from engine startup to being stored in the 1st storage means 5 is performed by the data (after 1min, 3min, 8min) stored in the 2nd storage means 3, the number of write by the 1st storage means 5 is decreased to secure the life of equipment.
Inventors:
Seiichi Ueno
Hidetoshi Imai
Hidetoshi Imai
Application Number:
JP27230891A
Publication Date:
July 02, 2002
Filing Date:
October 21, 1991
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
B01D46/42; B01D46/46; B60H3/06; (IPC1-7): B01D46/42; B01D46/46; B60H3/06
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)