Vehicle interior purification device

Patent metadata

Field	Value
Publication number	US-12515500-B2
Application number	US-202318137727-A
Country	US
Kind code	B2
Filing date	Apr 21, 2023
Priority date	Apr 26, 2022
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

A vehicle interior purification device includes: first and second outlets disposed in a housing; first and second blower fans corresponding to the first and second outlets and disposed inside the housing; and a predetermined generation device for an airflow delivered from the first outlet and the second outlet, the predetermined generation device being disposed inside the housing. The predetermined generation device includes at least one of an electrostatic atomization device that generates a mist containing charged water particles and an ozone/ion generation device that generates ozone and negative ions by corona discharge. The first outlet and the second outlet are set to be disposed along a direction of travel of the vehicle. The first rotational speed of the first blower fan and a second rotational speed of the second blower fan are settable to different rotational speeds.

First claim

What is claimed is:

1 . A vehicle interior purification device configured to be installed at a ceiling in an interior of a vehicle, the vehicle interior purification device comprising:
a housing; a first outlet disposed in the housing; a second outlet disposed in the housing; a first blower fan corresponding to the first outlet and disposed inside the housing; a second blower fan corresponding to the second outlet and disposed inside the housing; and a generation device for an airflow delivered from the first outlet and the second outlet, the generation device being disposed inside the housing, wherein the generation device includes at least one of an electrostatic atomization device that generates a mist containing charged water particles and an ozone/ion generation device that generates ozone and negative ions by corona discharge, the first outlet and the second outlet are configured to be disposed along a direction of travel of the vehicle, and when the vehicle interior purification device is disposed behind a center in a front-to-rear direction in the interior of the vehicle, a first rotational speed of the first blower fan corresponding to the first outlet oriented forward is presettable to be greater than a second rotational speed of the second blower fan corresponding to the second outlet oriented backward.

2 . The vehicle interior purification device according to claim 1 , wherein the vehicle interior purification device has:
a first mode in which the first blower fan rotates at the first rotational speed and the second blower fan rotates at the second rotational speed; and a second mode in which at least the second blower fan rotates at a third rotational speed equal to or lower than the second rotational speed.

3 . The vehicle interior purification device according to claim 2 , wherein in the second mode, the first blower fan does not rotate.

4 . The vehicle interior purification device according to claim 2 , further comprising:
an input circuit connected to a door open/closed signal line of the vehicle; and a power supply circuit connected to a +B voltage line and a ground voltage line, wherein when a signal on the door open/closed signal line indicates open and then indicates closed, and a potential difference of the +B voltage line relative to a potential on the ground voltage line becomes smaller than a voltage, the vehicle interior purification device operates in the first mode, and when the signal on the door open/closed signal line indicates closed and the potential difference of the +B voltage line relative to the potential on the ground voltage line is greater than the voltage, the vehicle interior purification device operates in the second mode.

5 . The vehicle interior purification device according to claim 4 , further comprising a control circuit.

6 . A vehicle interior purification device configured to be installed at a ceiling in an interior of a vehicle, the vehicle interior purification device comprising:
a housing; a first outlet disposed in the housing; a second outlet disposed in the housing; a first blower fan corresponding to the first outlet and disposed inside the housing; a second blower fan corresponding to the second outlet and disposed inside the housing; and a generation device for an airflow delivered from the first outlet and the second outlet, the generation device being disposed inside the housing, wherein the generation device includes at least one of an electrostatic atomization device that generates a mist containing charged water particles and an ozone/ion generation device that generates ozone and negative ions by corona discharge, the first outlet and the second outlet are configured to be disposed along a direction of travel of the vehicle, and when the vehicle interior purification device is disposed in front of a center in a front-to-rear direction in a cabin of the vehicle, a first rotational speed of the first blower fan corresponding to the first outlet oriented forward is presettable to be smaller than a second rotational speed of the second blower fan corresponding to the second outlet oriented backward.

7 . The vehicle interior purification device according to claim 1 , wherein
the housing includes an air intake, the generation device is disposed between the first blower fan and the second blower fan, and an airflow entering from the air intake is delivered from the second outlet through the generation device and the second blower fan.

8 . The vehicle interior purification device according to claim 1 , further comprising a locking part that locks the housing to the ceiling.

9 . The vehicle interior purification device according to claim 6 , wherein the vehicle interior purification device has:
a first mode in which the first blower fan rotates at the first rotational speed and the second blower fan rotates at the second rotational speed; and a second mode in which at least the second blower fan rotates at a third rotational speed equal to or lower than the second rotational speed.

10 . The vehicle interior purification device according to claim 6 , wherein in the second mode, the first blower fan does not rotate.

11 . The vehicle interior purification device according to claim 6 , further comprising:
an input circuit connected to a door open/closed signal line of the vehicle; and a power supply circuit connected to a +B voltage line and a ground voltage line, wherein when a signal on the door open/closed signal line indicates open and then indicates closed, and a potential difference of the +B voltage line relative to a potential on the ground voltage line becomes smaller than a voltage, the vehicle interior purification device operates in the first mode, and when the signal on the door open/closed signal line indicates closed and the potential difference of the +B voltage line relative to the potential on the ground voltage line is greater than the voltage, the vehicle interior purification device operates in the second mode.

12 . The vehicle interior purification device according to claim 11 , further comprising a control circuit.

13 . The vehicle interior purification device according to claim 6 , wherein
the housing includes an air intake, the generation device is disposed between the first blower fan and the second blower fan, and an airflow entering from the air intake is delivered from the second outlet through the generation device and the second blower fan.

14 . The vehicle interior purification device according to claim 6 , further comprising a locking part that locks the housing to the ceiling.

Assignees

• Panasonic Ip Man Co Ltd
• Panasonic Automotive Systems Co Ltd

Inventors

• Nishio Tsuyoshi
• Kang Hwayoung
• Yanai Nao
• Nishida Yuki
• MIYAMICHI Toshihiro

Classifications

• A61L9/22

  Ionisation · CPC title

• A61L9/015

  using gaseous or vaporous substances, e.g. ozone (A61L9/20 takes precedence {; evaporation in general B01B1/005}) · CPC title

• A61L2209/111

  Sensor means, e.g. motion, brightness, scent, contaminant sensors · CPC title

• A61L2103/75

  Room floors or walls · CPC title

• B60H1/245

  located in the roof · CPC title