JPH045408Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vehicle defroster device that uses ultrasonic waves.

[Conventional technology]

Conventionally, fog adhering to a windshield is removed by blowing hot air from a defroster device. As such a defroster device, for example, one shown in Japanese Utility Model Application Laid-Open No. 55-39230 has been proposed.

[Problem that the invention attempts to solve]

However, with conventional defroster devices,
If the engine does not warm up sufficiently, such as early in the morning in winter, hot air cannot be blown onto the windshield.
Therefore, it was not possible to immediately remove the fog attached to the windshield.

[Purpose of invention]

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a defroster device for a vehicle that can immediately remove fogging from a window.

[Means for Solving the Problems] In order to achieve the above object, the present invention attaches a polymer film to at least a part of the window,
An ultrasonic generator that irradiates this polymer film with ultrasonic waves is installed inside the cab.

[Effect of invention]

When the ultrasonic waves emitted from the ultrasonic generator hit the polymer film, the ultrasonic waves generate a large amount of heat inside the polymer film.

[Example of idea]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a vehicle defroster device according to the present invention will be described in detail with reference to FIGS. 1 to 4.

As shown in FIGS. 1 and 2, in the area corresponding to the driver's forward vision inside the front window 1,
A polymer film 2 is attached. Examples of the polymer film 2 include acrylic and polycarbonate. In order to irradiate this polymer film 2 with ultrasonic waves, an ultrasonic generator 3 is connected to a cab 4.
It is located inside.

The ultrasonic generator 3 includes an ultrasonic generator 5 and a control device 6. The ultrasonic generator 5 is attached to the ceiling 7, and as shown in FIG.
C and a stepping motor 5D,
The ultrasonic waves transmitted from the ultrasonic transducer 5A are turned into wide parallel waves by the concave mirror 5C. Also, box body 5B
The direction can be adjusted by a stepping motor 5D.

The control device 6 includes a water temperature sensor 6A, an outside temperature sensor 6B, an inside temperature sensor 6C, a control unit 6D that receives temperature signals from these and controls the operation of the ultrasonic generator 5, and a defroster switch 6.
It is composed of E. The control unit 6D controls the irradiation power and irradiation time of the ultrasonic waves emitted from the ultrasonic generator 5.

A defroster blower motor 8 is mounted at the bottom of the instrument panel 9, and its operation is controlled by a control unit 6D to send hot air to a warm air defroster outlet (not shown).

Next, the operation of the vehicle defroster device in this embodiment will be explained with reference to FIG. 4. When the engine is started and the defroster switch 6E is turned on (step S1), the engine water temperature detected by the water temperature sensor 6A is It is determined whether the temperature is higher or lower than a predetermined temperature (step S2). If the temperature is lower than the specified temperature,
Proceeding to step S3, the temperature inside and outside of the cap 4 is detected by the outside temperature sensor 6B and the inside temperature sensor 6C. This detected temperature signal is sent to control unit 6D. Control unit 6
According to the command from D, the ultrasonic generator 5 is turned on (step S4), and the polymer film 2 is heated.
The fog on the front window 1 is removed. When the irradiation time has elapsed, the ultrasonic generator is turned off by a command from the control unit 6D (step S5).

When the engine water temperature becomes higher than a predetermined water temperature in step S2, the ultrasonic generator 5 is turned off and the defroster blower motor 8 is turned on (step S6). That is, the fog on the front window 1 is removed by blowing warm air from the warm air defroster outlet. Then, when the defroster switch 6E is turned off (step S7), the defroster blower motor 8 is turned off (step S8), and the blowing of air from the warm air defroster outlet is stopped.

According to this embodiment having the above configuration, when the ultrasonic waves irradiated from the ultrasonic generator 3 hit the polymer film 2, a large amount of heat is generated inside the polymer film 2 due to the ultrasonic waves. The fog on the front window 1 is immediately removed by this heat.

In this embodiment, the polymer film 2 is partially attached to the front window 1, but it can also be attached to the entire surface of the front window 1. Further, it can also be attached to a portion other than the front window 1, for example, a side window.

Further, in this embodiment, the ultrasonic generator 3 is equipped with a control device 6 and can be automatically controlled based on the engine water temperature and the temperature inside and outside the cab, but it can also be operated manually. Although the ultrasonic generator 5 is operated in conjunction with the defroster blower motor 8 by the control unit 6D, it can also be operated independently.

Furthermore, in this embodiment, the direction of the box body 5B provided with the concave mirror 5C can be changed by the stepping motor 5D.
By connecting it to the front window 1, it is possible to arbitrarily rotate it in accordance with the ultrasonic irradiation, and at the same time control its speed, thereby efficiently removing fog from the front window 1.

[Effect of idea]

As described above, according to the present invention, it is possible to quickly remove fogging from a window in a defroster device for a vehicle.

[Brief explanation of the drawing]

Fig. 1 is a side configuration diagram of a vehicle defroster device according to an embodiment of the present invention, Fig. 2 is a front view showing the position of adhering the polymer film, Fig. 3 is a perspective view of the ultrasonic generator, and Fig. 4 is a perspective view of the ultrasonic generator. The figure is a flowchart of the defroster device of the same vehicle. 1...Front window, 2...Polymer film, 3...Ultrasonic generator, 4...Cabin.

Claims (1)

[Scope of utility model registration request] A defroster device for a vehicle, characterized in that a polymer film is attached to at least a portion of a window, and an ultrasonic generator for irradiating ultrasonic waves to the polymer film is provided in the cab.