# US 10,371,409 B2 · Ceiling mounted ventilation fan with illumination

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- Number: US 10,371,409 B2
- Document ID: US10371409B2
- Status: Granted
- Kind: B2
- Application number: 15/271,456
- Filed: 2016-09-21
- Published: 2017-01-12
- Granted: 2019-08-06
- Earliest claimed: 2011-04-27
- Assignees: Panasonic Ecology Systems Guangdong Co., Ltd.; Panasonic Corporation
- Applicants: Panasonic Ecology Systems Guangdong Co., Ltd.; Panasonic Corporation
- Inventors: Decong Yang; Qianhao Tan; Pingting Yang; Qiuqian Liang; Yannong Wu; Hitoshi Yoshikawa
- Web page: https://patentgrep.com/patent/US10371409B2

## CPC

- F24F 13/078: combined with lighting fixtures
- F04D 17/16: for displacing without appreciable compression
- F04D 25/088: {Ceiling fans}
- F04D 29/4226: {Fan casings}
- F04D 29/601: {specially adapted for elastic fluid pumps}
- F04D 29/661: {especially adapted for elastic fluid pumps}
- F21S 8/026: {intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling}
- F21V 7/0008: {providing for indirect lighting}
- F21V 33/0096: {Fans, e.g. ceiling fans (forced cooling of lighting devices characterised by the arrangement of fans F21V29/67)}
- F24F 7/065: {fan combined with single duct; mounting arrangements of a fan in a duct}
- F24F 13/24: Means for preventing or suppressing noise
- F24F 2221/14: mounted on the ceiling
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR

## Abstract

A ceiling mounted ventilation fan includes a housing, a fan unit and lighting equipment installed in the housing. The housing including a first opening connected to an air outlet and communicating with a duct, and a second opening that communicates with a room interior. The lighting equipment includes an illumination unit, and a cover, that surrounds the illumination unit, and has a reflecting surface which reflects light from the illumination unit and guides the light into the room. The fan unit includes a fan and a casing positioned at a first position, spaced, from a second position that is above the second opening, the fan casing surrounding the fan and having an air inlet opening directed upwardly. Air is introduced through the second opening and through the air inlet into the fan unit and is discharged through into the duct by the fan unit.

## Claims

### Claim 1

A ceiling mounted ventilation fan with illumination comprising a housing, a fan unit and lighting equipment installed in the housing,
the housing comprising:
a first opening connected to an air outlet of the fan unit, the first opening configured to communicate with a duct; and
a second opening provided in a lower part of the housing so as to communicate with an interior of a room,
the lighting equipment comprising:
an illumination unit,
the fan unit comprising:
a fan; and
a fan casing positioned at a first position, spaced, in a horizontal direction, from a second position that is above the second opening, the fan casing surrounding the fan, the fan casing having an air inlet opening directed upwardly, wherein
when air is introduced through the second opening into the housing, the introduced air is suctioned through the air inlet of the fan casing into the fan unit and is discharged through the first opening into the duct by the fan unit,
an electrical unit operable to control at least one of the fan unit or the lighting equipment is positioned facing the second opening, on an inner surface of the upper wall of the housing, and
the fan unit is provided in the housing so that a distance L1 from the inner surface of the upper wall of the housing to the air inlet of the fan casing is greater than a height L2 of the electrical unit from the inner surface of the upper wall.

### Claim 2

A ceiling mounted ventilation fan with illumination comprising a housing, a fan unit and lighting equipment installed in the housing,
the housing comprising:
a first opening connected to an air outlet of the fan unit, the first opening configured to communicate with a duct; and
a second opening provided in a lower part of the housing so as to communicate with an interior of a room,
the lighting equipment comprising:
an illumination unit,
the fan unit comprising:
a fan; and
a fan casing positioned at a first position, spaced, in a horizontal direction, from a second position that is above the second opening, the fan casing surrounding the fan, the fan casing having an air inlet opening directed upwardly, wherein
when air is introduced through the second opening into the housing, the introduced air is suctioned through the air inlet of the fan casing into the fan unit and is discharged through the first opening into the duct by the fan unit, and
the ceiling mounted ventilation fan comprising legs that support the fan casing on an inner wall surface of the lower part of the housing, wherein
the fan unit is movable between a placement position of the fan unit in the main housing and a maintenance position of the fan unit over the second opening by a sliding movement of the legs along the inner wall surface of the lower part of the housing.

### Claim 3 (depends on 2)

The ceiling mounted ventilation fan with illumination according to claim 2, further comprising guides that are engaged with the legs so as to guide the sliding movement of the legs.

### Claim 4

A ceiling mounted ventilation fan with illumination comprising:
a fan unit;
an illumination unit;
a housing in which the fan unit and the illumination unit are installed, the housing having a first opening connected to an air outlet of the fan unit and configured to communicate with a duct, and a second opening provided in a lower part of the housing so as to communicate with an interior of a room; and
a member having one of a shape of a circular truncated conical cylinder or a polygonal truncated prismoidal cylinder such that a size of lower end of the member is greater than a size of an upper end of the member, the member being attached to the housing,
the fan unit comprising:
a fan; and
a fan casing positioned at a first position, spaced, in a horizontal direction, from a second position that is above the second opening, the fan casing surrounding the fan, the fan casing having an air inlet opening directed upwardly, wherein
when air is introduced through the second opening into the housing, the introduced air is suctioned through the air inlet of the fan casing into the fan unit and is discharged through the first opening into the duct by the fan unit,
an electrical unit operable to control at least one of the fan unit or the lighting equipment is positioned on an inner surface of the upper wall of the housing, and
the fan unit is provided in the housing so that a distance L1 from the inner surface of the upper wall of the housing to the air inlet of the fan casing is greater than a height L2 of the electrical unit from the inner surface of the upper wall.

### Claim 5

A ceiling mounted ventilation fan with illumination comprising:
a fan unit;
an illumination unit;
a housing in which the fan unit and the illumination unit are installed, the housing having a first opening connected to an air outlet of the fan unit and configured to communicate with a duct, and a second opening provided in a lower part of the housing so as to communicate with an interior of a room; and
a member having one of a shape of a circular truncated conical cylinder or a polygonal truncated prismoidal cylinder such that a size of lower end of the member is greater than a size of an upper end of the member, the member being attached to the housing,
the fan unit comprising:
a fan; and
a fan casing positioned at a first position, spaced, in a horizontal direction, from a second position that is above the second opening, the fan casing surrounding the fan, the fan casing having an air inlet opening directed upwardly, wherein
when air is introduced through the second opening into the housing, the introduced air is suctioned through the air inlet of the fan casing into the fan unit and is discharged through the first opening into the duct by the fan unit, and
the ceiling mounted ventilation fan comprising legs that support the fan casing on an inner wall surface of the lower part of the housing, wherein
the fan unit is movable between a placement position of the fan unit in the housing and a maintenance position of the fan unit over the second opening by a sliding movement of the legs along the inner wall surface of the lower part of the housing.

### Claim 6 (depends on 5)

The ceiling mounted ventilation fan with illumination according to claim 5, further comprising guides that are engaged with the legs so as to guide the sliding movement of the legs.