| 摘要 |
PROBLEM TO BE SOLVED: To provide an instrument having a filter which is easily removable and on which setting miss hardly occurs when it is mounted and which is good for resource saving and friendly to environment and in which cost down can be attempted. SOLUTION: The open air is taken in through a dust-proof filter 10 provided on an intake of a duct 12 by means of a cooling fan 11 and is introduced into this instrument through an opening provided on the top part of the duct 12. A space 13 for sticking the dust-proof filter 10 is provided on the duct 12 and it is made to be a Velcro tape (R) face 21 (a tape face with a hook-like face on which a number of filaments the apexes of which are made to be hook-like are uniformly stood), and when the dust-proof filter 10 is pressed thereon, the filaments are hooked to make it possible to simply mount and remove the dust-proof filter and to easily exchange the dust-proof filter 10. An invention wherein two sheets of the dust-proof filters inserted into a flow path by fitting them on both sides of a frame by means of a Velcro tape system is also described. |
