JPS6080925A - Controller for car air-cleaner - Google Patents

Abstract

PURPOSE:To prevent function of an air-cleaner after closing of door, in an air- cleaner sharing power source with room lamp circuit, by interlocking the stopping function of air-cleaner with door opening function. CONSTITUTION:A room lamp circuit will light/unlight a room lamp 5 through turning on/off of manual switch 6 while interlocking with opening/closing of door switch 7 at DOOR position of said switch 6. Said room lamp circuit is provided with an air-celeaner control circuit 4, and upon function of normal open switch 8, a relay 10 is energized under such condition that the contact of relay 11 is turned on when a normally close switch 9 and a door switch 7 are closed, thus the contact is close. Consequently, power supply to the air-cleaner unit 3 is started and maintained by a holding current feeding circuit of relay 10 having a diode 12.

Description

[Detailed Description of the Invention] [Industrial Application Field] An air purifying unit 1 that receives a power supply in common with a room lamp circuit having a room lamp connected to an on-vehicle battery via a door switch. Between vehicle air purifiers.

△ [Prior art] (1) In order to simplify the power wiring for air purifiers that are mounted on the ceiling of a vehicle, it is generally done so that the power supply is shared with the room lamp circuit. be exposed.

For this reason, it may be necessary to have a power supply circuit independent of the key switch, so that a countermeasure should be taken in case the vehicle forgets to turn off the air purifier when exiting the vehicle. As one method for this, Utility Model Application Publication No. 57-131313 proposes using a door switch to detect the opening of the door and sound an alarm buzzer. In addition to being bothersome, there is also the problem that if the user does not notice the buzzer sounding, the air purifier continues to operate undesirably when the door is closed again.

[Object of the invention] To provide a control device for a vehicle air cleaner that solves the above problems and can automatically stop the air cleaner and prevent the air cleaner from operating again after the door is closed. to do.

[Structure of the Invention] (2) As stated at the beginning, there is an air purifier in which the room lamp circuit and the power supply circuit are common, and the air purifying unit is energized through a self-holding means that is held in a holding state by an on switch. A circuit is formed, and the door switch and the off switch are operatively connected to the deenergization circuit of the self-holding means.

In addition, in order to prevent the operation of the air purifier from being stopped undesirably when the door is only temporarily opened, an appropriate delay means can be provided between the door switch and the deenergization circuit. .

[Example] FIG. 1 shows the mounting position of the air purifying unit 3 to the vehicle ceiling 2. Air intake port 3a of unit 3
The air inside the vehicle compartment 1 is sucked in from the air purification filter, the air is purified by a built-in air purifying filter, and then blown out into the vehicle compartment 1 from the air outlet 3b.

In the electrical wiring diagram shown in FIG. 2, the control circuit 4 of the air purifier is housed in the same case as the air purifier unit 3,
Power is supplied from the vehicle battery in common with the room lamp circuit. In addition, if necessary, (3) - Muranobu circuit, control circuit 4 and air cleaning unit 3
may be stored in an integrated case.

The room lamp 5 is connected between the batteries in series with a manual switch 6 and a door switch 7, and the manual switch 6 is turned on.
When in the OFF position, the room lamp 5 is turned on, when in the OFF position, the room lamp 5 is turned off, and when in the DOOR position, the room lamp 5 is turned on and off in accordance with the opening and closing of the door switch 7.

In the control circuit 4, 8 is a normally open on switch, 9 is a normally closed off switch, and the operation knob is exposed on the outside of the case of the air purifying unit. Both switches are self-resetting. A relay 10 forms a self-holding circuit with a diode 12, and its relay contacts form a current supply circuit to the air cleaning unit 3. A relay 11 is energized to open a normally closed contact when the door switch 7 is opened.

The contacts of the off switch 9 and the relay 11 are normally closed, so when the on switch 8 is operated, the relay IO is energized and closes its contacts, thereby forming an energizing circuit to the air purifying unit 3. (4) The energized state is maintained by the holding current supply circuit of the relay IO via the diode 12.

Since the contacts of the off switch 9 and the relay 11 are located in the holding current supply circuit through the diode 12, opening the off switch 9 when in the self-holding state immediately deenergizes the relay lO and opens its contacts. The operation of the air cleaning unit 3 is stopped. Furthermore, when the air purifying unit 3 is in the self-holding state, the operation of the air purifying unit 3 is immediately stopped when the door is opened and the door switch 7 is opened.

By the way, when the door switch 7 is opened and the opening of the door is temporary, the air purifying unit 3
In order to prevent the operation of the relay 11 from being stopped, for example, if the relay 11 is of a delayed activation type, this purpose can be achieved without impairing the immediate stop function of the off switch 9.

Note that the configuration of the self-holding circuit in the control circuit 4 can also be configured using a self-holding circuit using a semiconductor logic circuit, and in that case, the relay 11 can also be replaced with (5) a semiconductor switch. The self-holding means employs a combination of a switch mechanism that mechanically enters the holding state when the on switch operation knob is pressed, and an electromagnetic coil that generates an electromagnetic force to release the holding of the switch mechanism. Good too.

[Effects of the Invention] The operation of the air cleaner can be automatically stopped in conjunction with the opening of the door, and the air cleaner can be prevented from operating again after the door is closed.

FIG. 2 is a schematic cross-sectional view of the inside of the vehicle interior, and FIG. 2 is an electrical wiring diagram of an embodiment of the present invention.

3... Air cleaning unit, 4... Control circuit, 5...
・Room lamp, 7...Door switch, 8...On switch, 9...Off switch, 10...Relay forming a self-holding circuit and energizing circuit, 11...
Deenergizing relay, 12... diode for supplying holding current.

Agent: Patent Attorney Takashi Okabe (6)

Claims (1)

[Claims] In a vehicle air purifier equipped with an air purifying unit that receives power supply in common with the room lamp circuit that has the room lamp connected to the vehicle battery via the door switch, the self-holding system enters the holding state when the on switch is turned on. A control device for a vehicle air cleaner, comprising: forming an energizing circuit for the air purifying unit via means, and operatively connecting the door switch and the off switch to a deenergizing circuit of the self-holding means.