Air purifier

Patent metadata

Field	Value
Publication number	US-12044429-B2
Application number	US-202318221200-A
Country	US
Kind code	B2
Filing date	Jul 12, 2023
Priority date	Jul 14, 2022
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

The present disclosure relates to an air purifier. An air purifier according to an aspect of the present disclosure may include: a first body having an inlet and an outlet; a fan; a second body coupled to the first body, having a central portion located above the first body, and extending from the central portion in a direction crossing the up-and-down direction; a substrate; a light source disposed at the central portion or at a position corresponding to the central portion in the up-and-down direction; and a light guide facing the light source, and extending in a direction away from the central portion, so it is possible to minimize the number of the light sources and deliver light to an outside of the air purifier.

First claim

What is claimed is:

1. An air purifier comprising:
a first body having an inlet and an outlet;
a fan provided inside the first body;
a second body coupled to the first body, the second body having a central region located above the first body and a lower wall extending outward from the central region;
a substrate;
a light source that generates light, is connected to the substrate, and is provided inside the second body; and
an inner light guide that is provided inside the second body, and positioned to face the light source to receive light,
wherein the inner light guide extends from the light source to the lower wall to guide light from the light source.

2. The air purifier of claim 1 , wherein the inner light guide extends radially outward from the central region of the second body along an extension direction of the second body.

3. The air purifier of claim 1 , wherein the inner light guide includes:
a light receiving region facing the light source;
a light channel extending from the light receiving region along an extension direction of the second body; and
a light emitting region extending from the light channel and toward an outside of the second body.

4. The air purifier of claim 3 , comprising a plurality of the light sources that are spaced apart and positioned along a circumferential direction of the substrate; and
wherein the inner light guide includes a plurality of light receiving protrusions protruding toward the plurality of light sources and spaced apart from each other along the circumferential direction of the substrate in which the plurality of light sources are positioned.

5. The air purifier of claim 3 , wherein the light receiving region faces the light source in a vertical direction and extends curvedly toward the outside of the second body in the vertical direction.

6. The air purifier of claim 3 , wherein the light channel extends toward the outside of the second body, and
wherein the light emitting region extends curvedly from the light channel toward the outside of the second body along a vertical direction.

7. The air purifier of claim 1 , wherein the inner light guide includes a coupling rib facing the substrate and the second body in a vertical direction.

8. The air purifier of claim 1 , wherein the inner light guide extends further outward radially out than an outer wall of the first body and outputs light toward an outside of the first body.

9. The air purifier of claim 1 , further comprising an outer light guide that receives light from the inner light guide and emits light toward the outside of the second body.

10. The air purifier of claim 9 , wherein the outer light guide faces the inner light guide and is spaced apart in a downward direction from the inner light guide.

11. The air purifier of claim 9 , wherein the outer light guide is detachably coupled to the second body, and detachably coupled to the inner light guide.

12. The air purifier of claim 9 ,
wherein the second body includes:
a perimeter wall extending along a circumference of the second body;
a step wall spaced apart from the perimeter wall; and
a connecting rib connecting the perimeter wall and the step wall,
wherein the outer light guide includes:
a plurality of lamp protrusions spaced apart in a circumferential direction of the second body; and
a lamp groove defined between a pair of the plurality of lamp protrusions, and into which the connecting rib is inserted.

13. The air purifier of claim 9 , wherein the second body includes:
a perimeter wall extending along a circumference of the second body; and
a recess provided in the perimeter wall,
wherein the outer light guide includes a hook protruding toward the recess to couple the outer light guide to the second body.

14. An air purifier comprising:
a first body having an inlet, an outlet, and an outer wall;
a fan provided inside the first body;
a second body that is coupled to the first body and extends farther out radially than the outer wall of the first body;
a light source that generates light; and
an outer light guide that emits light received from the light source toward an outside of the second body and is located farther out radially from a center axis of the first body than the outer wall of the first body.

15. The air purifier of claim 14 , wherein the outer light guide extends along a circumferential direction of the second body at a position that is farther out radially than the outer wall of the first body.

16. The air purifier of claim 14 , wherein a distance between the outer light guide and the edge of the second body is greater than a distance between the outer light guide and the outer wall of the first body.

17. The air purifier of claim 14 , further comprising:
a substrate on where the light source is provided; and
an inner light guide carrying light emitted from the light source to the outer light guide,
wherein the substrate is vertically aligned with positioned over the first body.

18. The air purifier of claim 14 , further comprising an inner light guide provided to face the light source and extending toward the outer light guide.

19. The air purifier of claim 18 , wherein the inner light guide includes:
a light receiving region positioned to face the light source;
a light channel extending from the light receive region toward an outside of the first body; and
a light emitting region facing the outer light guide and located radially farther out than the outer wall of the first body.

20. The air purifier of claim 19 , wherein the light emitting region extends curvedly downward toward the outside of the first body.

Assignees

• Lg Electronics Inc

Inventors

• Lee Kunyoung
• Kim Bohyun
• Kim Dongeun

Classifications

• B01D46/4254

  Allowing or improving visual supervision, e.g. lamps, transparent parts, windows · CPC title

• F21V2200/20

  of light guides of a generally planar shape · CPC title

• F24F2221/02

  combined with lighting fixtures · CPC title

• F24F2013/205

  Mounting a ventilator fan therein · CPC title

• A47B37/00

  Tables adapted for other particular purposes {(glass cutting tables C03B33/03)} · CPC title