Air filter device and electronic device

Abstract

The present invention relates to an air filter device for smoothly performing the relative movement between a brush with distal parts of bristles of the brush penetrating an air filter surface and the air filter, and an electronic device using the air filter device. The air filter comprises: an air filter that removes dust from air drawn into a device, a slim brush, such as a rotary brush, wherein the brush removes dust from the air filter, and the brush and the air filter are relatively moved in a direction orthogonal to a longitudinal direction of the brush while distal parts of the bristles of the brush penetrate the air filter surface to remove dust from the air filter; and a unit for reducing or eliminating penetration that reduces or eliminates penetration of the brush into the air filter when relative movement of the brush and the air filter is stopped.

Description

technical field [0001] The present invention relates to an air filter device provided with a removing device for removing dust from an air filter using a brush, and an electronic device provided with the air filter device. Background technique [0002] Conventionally, in electronic equipment such as a personal computer and a projection type image display device, a method is used in which outside air is sucked in and blown as cooling air in order to cool components. In particular, in projection-type image display devices, since a light source lamp used as a light source becomes high temperature, various optical system devices typified by the light source lamp are cooled by cooling air. [0003] Also, in such electronic equipment, an air filter is used in order to capture dust in the inhaled outside air. However, if the air filter catches and accumulates dust over time, the air filter becomes clogged, the amount of intake air decreases, and the cooling effect decreases. Ther...

AI Technical Summary

Problems solved by technology

[0010] However, in the device of Patent Document 1, when the rotating brush is stopped while biting into the surface of the air filter, and then the rotating brush is driven, there is a problem that the frictional force between the rotating brush and the air filter becomes large.

In addition, when the rotating brush is turned to return to the original position after moving from the standby position to the end on the opposite side, if the rotating brush is turned while biting into the surface of the air filter, there will be a gap between the rotating brush and the air. The problem of increased friction between filters

However, in this patent document 1, no countermeasure is implemented so that the rotating brush does not stop or turn around while biting into the surface of the air filter.

Therefore, in Patent Document 1, it may be difficult to smoothly move the rotating brush, and there is room for improvement.

[0011] On the other hand, in Patent Document 2, there is also the same problem as in the case of Patent Document 1

That is, when the front end portion of the bristle member of the fixed brush stops under the state of biting into the surface of the pre-filter, there is a problem that the frictional force between the fixed brush and the pre-filter becomes large when the movement of the pre-filter is started thereafter.

In addition, when the moving direction of the pre-filter is reversed, when the front end of the bristle member of the fixed brush bites into the surface of the pre-filter, there is a problem that the frictional force between the fixed brush and the pre-filter becomes large.

However, in Patent Document 2, no countermeasures are implemented for such a problem

Therefore, also in Patent Document 2, there is a problem that it may be difficult to move the rotating brush smoothly, and there is room for improvement in this regard.

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