JPH061205A - Water drop eliminating device - Google Patents

Abstract

PURPOSE:To secure visibility by eliminating water drops sticking on the face of a side window without providing mechanical equipment such as a wiper and so on. CONSTITUTION:A pair of electrodes 3, 4 which have comb electrode parts 3a, 4a are provided on a side window 2. An insulating film 6 is formed on each of comb electrode parts 3a, 4a so as to cover a half of each of them. The predetermined direct current voltage is applied between the electrode 3 and the electrode 4. When water drop molecules sticking on the side window 2 touch the comb electrodes 3a, 4a, they are ionized and drawn by the successively adjacent comb electrodes 3a, 4a to move on the insulating film 6, and water drops are removed. In this way, water drops sticking on the face of the side window 2 are eliminated so that the visibility from a driver seat can be secured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water drop removing device for removing water drops adhering to a wind glass surface such as a side window.

[0002]

2. Description of the Related Art Conventionally, in door mirrors of automobiles, in order to prevent water droplets such as rainwater from adhering to obstruct rearward visibility, ultrasonic vibration is applied to the mirror body to remove water droplets adhering to the mirror surface. It is being removed.

However, even if the water droplets attached to the door mirror are removed in this way, if the water droplets are attached to the glass surface of the side window when the driver looks at the door mirror through the side window, There is a problem that the field of view for seeing is blocked, which makes it difficult to see behind.

In order to solve such a problem, for example, a structure in which a wiper or the like is arranged on the glass surface of the side window to remove water droplets has been considered. Since the water droplets attached to the can be removed and the rear view can be secured, the safety is improved even when driving on a rainy day.

[0005]

However, in the structure in which the mechanical wiper is provided to remove the water droplets adhering to the glass surface of the side window as described above, for example, the wiper itself is arranged so as not to obstruct the view. In addition, it is necessary to make the wiper unobtrusive in correspondence with the opening / closing operation of the side window, and there is a problem in the design of the vehicle when it is put to practical use, so there are still difficult points to realize. Under circumstances.

The present invention has been made in view of the above circumstances, and an object thereof is to remove water droplets adhering to a wind surface with a simple structure without using mechanical components, and therefore a vehicle. The purpose is to provide a water droplet removal device that does not hinder the overall design.

[0007]

The water drop removing device of the present invention is provided with a pair of electrodes, which are alternately arranged at a predetermined interval, on a wind glass surface, and each of the comb-shaped electrode parts is provided. An insulating film that is parallel to and is formed to partially cover the comb-shaped electrode portion is provided, and a DC voltage is applied between the pair of electrodes to cause water droplets containing an ionic component to form the comb-shaped electrode portion. It is characterized in that it is configured to be electrically moved in a direction orthogonal to.

[0008]

According to the water drop removing apparatus of the present invention, when a DC voltage is applied to the pair of electrodes in a state where the water drops are attached to the window glass, for example, the molecules of the water drops contacting the comb-shaped electrode portion to which the positive voltage is applied Becomes positive ions due to the exchange of electrons with the electrode. As a result, the water droplet molecules that have become positive ions are attracted to the adjacent comb-shaped electrode portion to which a negative voltage is applied and move on the insulating film. Negative ions are generated by the exchange of electrons. Then, the water droplet molecules that have become negative ions are further attracted to the adjacent comb-shaped electrode portion to which a positive voltage is applied and move on the insulating film. It becomes positive ions again due to the exchange of electrons.

Thereafter, the molecules of the water droplets move in a direction perpendicular to the comb-shaped electrode portions of the pair of electrodes by repeating the above-mentioned operation, and move from the surface of the wind glass. As a result, the water droplets attached to the windshield surface are electrically moved and removed, so that the field of view is not obstructed and the field of view for the door mirror can be secured.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a view mainly showing a side window 2 portion of an automobile 1. A pair of electrodes 3, 3 are provided in a predetermined region at a front portion of a surface of the side window 2 on the outer side of the vehicle compartment.
4 are provided. Each of the electrodes 3 and 4 has a plurality of comb-shaped electrode portions 3a and 4a arranged at predetermined intervals, and the respective comb-shaped electrode portions 3a and 4a are arranged so as to mesh with each other. There is.

In this case, the pair of electrodes 3 and 4 are provided corresponding to the door mirror 5 arranged outside the passenger compartment of the side window 2, and it is necessary for the driver to secure a field of view in order to see the door mirror. It is located in the part. The comb-shaped electrode portions 3a and 4a are arranged in a tilted state so that the side positioned in front of the vehicle is lowered. In addition, the pair of electrodes 3,
4 is formed of a transparent electrode or a thin electrode member that does not obstruct the field of view. Therefore, the field of view of the side window 2 is not obstructed by the electrodes 3 and 4.

FIG. 2 shows a comb-shaped electrode portion 3 of a pair of electrodes 3 and 4.
Sections a and 4a are shown in cross section. This comb-shaped electrode portion 3
An insulating film 6 is provided so as to cover the upper half of each of a and 4a. The insulating film 6 is made of a transparent material such as silicon oxide. A predetermined DC voltage is applied from a DC power supply (not shown) between the pair of electrodes 3 and 4. For example, a positive voltage is applied to the electrode 3 and a negative voltage is applied to the electrode 4 during operation. It has become.

Next, the operation of this embodiment will be described with reference to FIG. First, the operating principle of this embodiment will be briefly described with reference to FIG. That is, in FIG.
4 shows the cross section of the comb-shaped electrode portions 3a, 4a of No. 4, and the insulating film 6 is arranged so as to cover one half of each of the comb-shaped electrode portions 3a, 4a. A positive voltage is applied to the comb electrode portion 3a, and a negative voltage is applied to the comb electrode portion 4a.

Now, when water droplets such as rainwater are attached to the surface of the side window 2 on which the pair of electrodes 3 and 4 are arranged, the comb-shaped electrode portion 3a to which a positive voltage is applied to the molecules of the water droplets. When it comes into contact with, the water droplet molecules become charged with positive ions due to the exchange of electrons there. The water droplet molecules charged with positive ions are attracted to the adjacent comb-shaped electrode portion 4a to which a negative voltage is applied, and move on the insulating film 6 (arrow A in the figure) to reach the comb-shaped electrode portion 4a. When it reaches, it exchanges electrons and is charged with negative ions.

The water droplet molecules charged with negative ions are further attracted by the adjacent comb-shaped electrode portion 3a to which a positive voltage is applied and move on the insulating film 6 (arrow B in the figure) to form a comb shape. When it reaches the electrode portion 3a, electrons are exchanged there and are again charged with positive ions. Below, the water droplet molecule is
The comb-shaped electrode portions 3a, 4a are alternately charged between the comb-shaped electrode portions 3a, 4a and are adjacent to each other while being charged with positive ions and negative ions.
Is moved by being pulled by the comb-shaped electrode portions 3a, 4
It will move in the direction orthogonal to a.

On the basis of such a principle, the water droplet molecules attached to the pair of electrodes 3, 4 of the side window 2 are sequentially moved downward by an electric action, so that the electrodes 3, 4 are arranged. Water droplets on the exposed part are removed. Thereby, the view from the driver's seat can be secured to the door mirror 5.

According to the present embodiment as described above, the pair of electrodes 3, 4 and the insulating film 6 are formed on the side window 2, and the water droplets adhering to the window surface are ionized and electrically moved. Since it can be removed, the field of view can be secured while providing a simple and unobtrusive structure without providing a mechanical structure such as a wiper.

In the above embodiment, the case where the present invention is applied to the side window 2 has been described, but the present invention is not limited to this, and may be applied to, for example, a front window or a rear window.

[0019]

As described above, according to the water droplet removing apparatus of the present invention, a pair of electrodes having a plurality of comb-shaped electrode portions are arranged on the wind glass surface, and water droplets attached to the glass surface are electrically removed. Since it is moved and removed, there is an excellent effect that the field of view can be secured while using a simple and unobtrusive structure without using mechanical components such as a wiper.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

[Fig.2] Vertical side view of side window

FIG. 3 is an explanatory diagram of the principle of operation.

[Explanation of symbols]

2 is a side window (window glass), 3 and 4 are a pair of electrodes, 3a and 4a are comb-like electrode portions, 5 is a door mirror, and 6
Is an insulating film.

Claims (1)

[Claims] 1. A water droplet removing device for removing water droplets adhering to a wind glass surface, wherein a pair of electrodes in which a plurality of comb-shaped electrode portions are alternately arranged at predetermined intervals on the wind glass surface, and each of the comb-shaped electrodes are provided. An insulating film which is arranged parallel to the electrode portion and partially covers the comb-shaped electrode portion, and a DC voltage is applied between the pair of electrodes to remove water droplets containing an ionic component. A water droplet removing device, wherein the water droplet removing device is electrically moved in a direction orthogonal to the comb-shaped electrode portion.