Lighting device with fan directed airflow and air filtering

摘要

A lighting device includes a casing having an inlet that introduces external air at one side and an outlet that discharges the introduced air at the other side. A fan is located within the casing to flow external air from an inlet direction to an outlet direction. An inlet cover blocks at least an upper area of the inlet to prevent external air from being directly introduced into the inlet. An air flow channel communicates the inlet and the outside, and includes two contracting flow channels having a reducing sectional area in an advancing direction of air. The two expanding flow channels communicate with the contracting flow channels and have an increasing sectional area in an advancing direction of air, so that in a connection portion of the contracting flow channel and the expanding flow channel, the advancing direction of air is changed.

主权项

1. A lighting device, comprising:
a casing having an inlet at one side for introduction of external air and an outlet at another side for discharge of the external air introduced through the inlet; a fan located within the casing to flow external air from the inlet to the outlet; an inlet cover that partially blocks an area of the inlet; and an air flow channel that communicates the inlet and the outside, wherein the air flow channel comprises:
first and second contracting flow channels having a reducing sectional area advancing in an advancing direction of air; andfirst and second expanding flow channels that communicate with the contracting flow channels and that have an increasing sectional area advancing in an advancing direction of air, wherein in a connection portion between the first contracting flow channel and the first expanding flow channel, the advancing direction of air is changed, wherein the inlet cover blocks a peripheral area of the casing that forms the inlet and a periphery of the inlet, and the air flow channel is a space between the peripheral area of the casing and the inlet cover, wherein the contracting flow channels and the expanding flow channels are alternately arranged, wherein the first contracting flow channel is located at an inlet of the air flow channel, and the second expanding flow channel is located at an outlet of the air flow channel, further comprising a floating matter collecting portion located within the inlet to collect floating matter introduced through the air flow channel, and wherein the floating matter collecting portion is located lower than an outlet of the air flow channel and has a mesh structure that passes through air and that collects floating matter.