JPH07300013A - Blower for vehicle - Google Patents

Abstract

PURPOSE:To realize air blowing excellent in an energy saving property and in comfortableness by controlling a vehicle use blower to detect a passenger for whether provided or not in a blowing direction of the bower, so as to perform air blowing at a minimum limit required. CONSTITUTION:In a blower, a casing 1, having a man detecting sensor 6, is always driven by an oscillating electric motor 2, blowing air in only a direction of passengers, when provided, is performed by a blowing electric motor 5 driving an air blowing impeller 4, further chattering is prevented by a timer control circuit, and air can be blown and stopped in accordance with a high/low temperature by a temperature detecting sensor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle blower in which a fan casing is rotated to change a blowing direction.

[0002]

2. Description of the Related Art In recent years, the facilities for vehicles have been enriched, and particularly for air conditioning, it is required not to simply control the temperature but to provide comfortable air conditioning and further energy saving.

Conventionally, this type of vehicle blower has been shown in FIG. As shown in the figure, it comprises a casing 101 for blowing air, a swinging mechanism 102 connected to the casing 101, an electric motor 104 for driving an impeller 103 for blowing air, and a rotation speed changeover switch 105 of the electric motor 104, These are configured to be attached to the vehicle by the fixed frame 106.

In the above structure, the electric motor 10 operates at the rotation speed (air volume) set by the rotation speed changeover switch 105.
4 operates, the rotation is transmitted to the swing mechanism 102, and the air blowing direction is changed.

[0005]

In such a conventional air blower for a vehicle, the air volume is constant regardless of the presence or absence of passengers and the temperature inside the vehicle. Therefore, when there is no passenger, power is wasted, There was a problem that passengers feel discomfort when the temperature becomes low.

The present invention is intended to solve the above problems, and a first object thereof is to detect the presence or absence of a passenger in the air blowing direction, and to blow air only in the time when the passenger is present and only in the direction in which the passenger is present for energy saving operation. And

A second object is to prevent the blower motor from chattering even if the human detection sensor is repeatedly turned on and off due to passenger movement and the like.

A third object is to automatically switch the strength of the blower electric motor depending on whether the temperature inside the vehicle is high or low, so that the blowing operation is comfortable for passengers.

[0009]

A first means for achieving the first object of the present invention is a casing having a swinging mechanism, a swinging electric motor for constantly driving the swinging mechanism, and a blower. A blower electric motor for driving an impeller for a vehicle, a frame for fixing to the vehicle, and a casing sensor for detecting the presence or absence of passengers in the blower direction;
ON-OFF of the air blower motor in conjunction with the human detection sensor
A person detection control circuit for performing the above is provided, and an air-saving operation is performed only when the person detection sensor detects the presence of a passenger to perform energy saving operation.

A second means for achieving the second object is to forcibly drive the electric motor of the blower motor for a certain period of time after the human detection sensor in the human detection control circuit detects the presence of a passenger. The timer control circuit capable of performing the above operation is incorporated to prevent chattering to the blower electric motor.

A third means for achieving the third object is to increase or decrease the temperature inside the vehicle by means of a temperature detection sensor for detecting the temperature inside the vehicle and a temperature detection control circuit at the air inlet of the casing. According to the above, the operation control of the blower electric motor is performed, and the blowing operation is comfortable for passengers.

[0012]

According to the present invention, since the presence or absence of passengers in the air blowing direction can be detected by the configuration of the first means described above, the necessity of the air blowing operation can be determined.
ON-OFF control is possible.

Further, the configuration of the second means makes it possible to prevent the rapid on / off repetition of the blower electric motor due to the movement of passengers.

Further, according to the structure of the third means, it is possible to automatically obtain the switching between the strong and weak stop of the blower electric motor according to the temperature inside the vehicle.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG.

As shown in the figure, a casing 1 for blowing air.
A swing mechanism 3 that is connected to the casing 1 and is constantly driven by a swing motor 2; a blower motor 5 that drives a blower impeller 4; and the casing 1
A person detection sensor 6 for detecting the presence or absence of passengers in the air blowing direction, and a person detection control circuit 7 for interlocking with the person detection sensor 6 to turn on and off the air blowing motor 5 are provided. These are attached to the ceiling of the vehicle by the fixed frame 8.

As described above, according to the vehicle blower of the first embodiment of the present invention, since the casing 1 constantly swings, the human detection sensor 6 can always confirm the presence of passengers in the blowing range. As a result, as shown in FIG. 2, it is possible to blow air only when the passenger is present and only in the direction where the passenger is present.

Next, a second embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. As shown in the figure, a person detection control circuit 7 for turning on and off the blower electric motor 5 is provided with a delay timer control circuit 9 for forced operation.

With the above configuration, when the passenger detection sensor 6 detects a passenger and the blower motor 5 is operating, the delay timer control circuit 9 is provided even when the passenger suddenly moves from one seat to another.
Thus, the blowing operation is continued for a certain period of time, and chattering can be prevented.

Next, a third embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. As shown in the figure, a temperature sensor 11 near the air inlet 10 of the casing 1 and a temperature sensor capable of switching the operation of the blower motor 5 between strong, weak, and stopped depending on the temperature sensed by the temperature sensor 11. The control circuit 12 is provided. At this time, the operation switching may be stepless switching or ON-OFF switching.

With the above construction, strong airflow can be performed when the temperature inside the vehicle is high, weak airflow can be performed when the temperature is slightly high, and airflow can be stopped when the temperature is low.

[0022]

As is apparent from the above embodiments, according to the present invention, the operation of the blower electric motor is turned on and off depending on the presence or absence of the blowing direction, so that only the time when the passenger is present or the direction where the passenger is present It is possible to provide an air blower for a vehicle that has an excellent energy saving effect because it can blow air only without chattering.

Further, the temperature sensing sensor can provide strong and weak blown air according to the temperature condition inside the vehicle, thereby providing a vehicle blower excellent in comfort.

[Brief description of drawings]

FIG. 1A is a configuration diagram of a vehicle blower according to a first embodiment of the present invention, FIG. 1B is a sectional view taken along the line AB, and FIG. 1C is a sectional view taken along the line CD.

2A is the same operation explanatory diagram of the same first embodiment; FIG. 2B is the same operation explanatory diagram of the same first embodiment; FIG. 2C is the same operation explanatory diagram of the same first embodiment; Illustration of the same operation

FIG. 3 is the same configuration diagram of the second embodiment.

FIG. 4A is the same configuration diagram of the third embodiment, and FIG. 4B is the same AB sectional view.

5A is a configuration diagram of a conventional vehicle blower, FIG. 5B is a sectional view taken along the line AB, and FIG. 5C is a sectional view taken along the line CD.

[Explanation of symbols]

 1 casing 2 swinging electric motor 3 swinging mechanism 4 impeller 5 blower electric motor 6 human detection sensor 7 human detection control circuit 8 fixed frame 9 timer control circuit 10 air suction port 11 temperature detection sensor 12 temperature detection control circuit

Claims (3)

[Claims] 1. A casing having a swing mechanism, a swing motor for constantly driving the swing mechanism, a blower motor for driving an impeller for blowing, and a frame for fixing to a vehicle, The casing part is provided with a person detection sensor for detecting the presence or absence of passengers in the air blowing direction, and a person detection control circuit for interlocking with the person detection sensor to turn on and off the blower electric motor. A blower for a vehicle that can perform blow operation only when the sensor detects the presence of passengers. 2. The control circuit includes a timer control circuit capable of forcibly operating the electric motor of the blower motor for a certain period of time after the human detection sensor detects the presence of a passenger. The vehicle blower described. 3. An operation control of the blower electric motor can be performed according to the level of the vehicle interior temperature by a temperature sensor and a temperature sensor control circuit for detecting the vehicle interior temperature at the air intake port of the casing. The blower for vehicles of claim | item 1.