JPH0586730U - Automatic anti-glare water drop removal mirror - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent abnormal temperature rise in the automatic anti-glare water droplet removal mirror and protect the EC vapor deposition film layer. [Structure] A cushioning material is carried between the vibration plate and the heater panel via an adhesive material, and a space is formed between the heater panel and the mirror glass to form an EC on the rear surface of the mirror glass.
An automatic anti-glare water droplet removal mirror, characterized in that a heater panel is provided at a position separated from a sealing material provided on the back surface of the vapor deposition film. [Effect] Since a space is provided between the heater panel and the mirror glass so that the frictional heat at the time of vibration does not reach the EC vapor deposition film, an abnormal temperature rise of the mirror glass is prevented to prevent color unevenness during antiglare. Dispelled the outbreak.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for removing water droplets adhering to the mirror surface of a rearview mirror when it is raining, etc., and is particularly suitable for an automatic anti-glare mirror.

[0002]

[Prior Art]

 FIG. 3 shows a water droplet removing device disclosed in JP-A-3-139461. In this conventional example, a mirror 30, a vibrating plate 31 whose outer peripheral portion is fixed to the back surface of the mirror 30, a vibrator 32 fixed to the vibrating plate 31, and a space between the vibrating plate 31 and the mirror 30. The water droplet removing device 35 includes a heater 33 that is inserted to heat the mirror 30, and a spacer 34 that brings the heater 33 into contact with the mirror 30.

In the above-mentioned conventional example, when the vibrating plate 31 is vibrated by the vibrator 32, the vibration is transmitted to the mirror 30 to vibrate the mirror 30, and the raindrops on the mirror surface are atomized or dropped to be removed. The heater 33 heats the mirror 30 to melt the fog or ice adhering to the mirror 30 and change it into raindrops, which are removed by the vibration.

On the other hand, FIG. 4 is a cross-sectional view showing an anti-glare mirror 40 with a water droplet removing function of Japanese Utility Model Laid-Open No. 3-6602. In this mirror 40, a protective substrate 43 is formed on the back surface of the mirror body 41 so as to cover the electrochromic (EC) layer 42, and a space layer 44 is formed between the protective substrate 43 and the electrochromic layer 42. A sealing member 45 for sealing the peripheral edge between the mirror body 41 and the protection substrate 43 over the entire circumference, and an ultrasonic transducer 46 on the back surface of the protection substrate 43. The present invention functions as an anti-glare mirror that excites an ultrasonic oscillator 46 to disperse water droplets on the mirror surface and further reduces the reflectance of light by the electrochromic layer 42 at night.

[0005]

[Problems to be solved by the device]

 In the first conventional example, since the vibrating plate and the spacer are only in contact with each other, the vibrating plate and the spacer vibrate separately, and since the heater and the mirror are also in contact with each other, they can be separately driven. There is. Therefore, during vibration, frictional heat is generated at the contact area between the vibration plate and the spacer and between the heater and the mirror, which causes an abnormally high temperature. The second conventional example is a mirror having an antiglare mechanism, but an EC vapor deposition layer that realizes the antiglare mechanism is provided on the back surface of the mirror, and EC vapor deposition is performed to protect them from heat. Although the sealing member is arranged so as to cover the layers, when the mirror body is excited at high speed, the joint with the sealing member will generate abnormally high heat due to friction due to vibration. Also, although an insulating glass protective substrate is used, its weight hinders vibration, and early improvement is desired. Therefore, the present invention uses an EC vapor deposition layer, a heater, and a vibrator, and uses a metal diaphragm to keep the EC vapor deposition film layer at a constant temperature in order to achieve stable performance. The present invention provides a means for arranging the heater panel away from the sealing member so as not to reach the temperature.

[0006]

[Means for Solving the Problems]

 The present invention is an automatic anti-glare water droplet removal mirror that removes water droplets by ultrasonically vibrating the mirror surface with a vibrating body arranged on the back surface of the mirror glass, with an adhesive between the diaphragm and the heater panel. The heater panel is characterized in that it carries a cushioning material, forms a space between the heater panel and the mirror glass, and disposes the heater panel at a position apart from the sealing material disposed on the rearmost surface of the mirror glass. It is an automatic anti-glare water drop removal mirror.

[0007]

[Function of the device]

 In the present invention, since a cushioning material joined by an adhesive material is arranged between the heater panel and the diaphragm and a space is formed between the mirror glass and the heater panel, there is a possibility that the vibration may occur due to the excitation of the ultrasonic transducer. It is possible to prevent the abnormally high temperature due to the frictional heat which has been present and to make the second coloring layer function normally. Moreover, since a lightweight polymer foam is used as a cushioning material, the load during vibration can be reduced.

[0008]

【Example】

 FIG. 1 is a sectional view showing an embodiment of the present invention. The water drop removing mirror 1 of the present invention is, for example, an EC vapor deposition layer 4, an ITO (indium tin oxide) vapor deposition layer 5, and an ITO (indium tin oxide) vapor deposition layer 5 sandwiched by a film sealing material 3 on the back surface of a mirror glass 2 having a chemically strengthened glass as a base material. An aluminum reflecting film 6 which also serves as an electrode film is provided. Further, an electrode 7 for EC is provided around the edge of the glass 2, and an automatic antiglare mechanism is realized by these constituent members. By the way, it goes without saying that it is activated by a switch placed inside the vehicle.

Next, the ultrasonic transducer 11 is fixed to the back surface of the vibration plate 10 formed of a thin metal plate having a high strength such as titanium, while the front surface of the vibration plate 10 is lightweight via the adhesive material 12. A cushioning body 13 made of a foam material made of a high polymer material is provided. Further, on the front surface of the buffer body 13, the same adhesive material 14 as described above is used to carry the same material as the heater panel 15 described in the conventional example. The vibrating plate 10 has its peripheral portion adhered to the mirror glass 2 with an epoxy adhesive, and its substantially central portion is bent into a dish shape, and the concave portion formed thereby is formed in the heater panel 15. It is used as a storage area.

Moreover, in the heater panel 15, a space 16 is formed between the heater panel 15 and the mirror glass 2 by the buffer 13 arranged at a position separated from the sealing material 3 of the mirror glass 2.

The automatic anti-glare water droplet removal mirror of the present invention configured as described above transmits the vibration oscillated by the ultrasonic vibrator to the mirror side by the diaphragm when the switch is turned on in the rain or fog. , The water droplets adhering to the mirror surface are dispersed and removed. Also, during freezing such as in winter, the heater panel indirectly transfers heat from the back surface of the glass to the front surface side to raise and keep the temperature of the glass surface to prevent water droplets from adhering.

[0012]

[Effect of the device]

 As described above, according to the present invention, the heater panel and the mirror glass are arranged so that the frictional heat, which has a bad influence on the second coloring layer of the EC mirror functioning the heater panel and the automatic anti-glare mechanism, does not reach the EC vapor deposition film. Since there is a space between them, it is possible to prevent an abnormal temperature rise of the mirror glass, eliminate the occurrence of color unevenness during antiglare, and obtain a clear view.

[Brief description of drawings]

 1 is a sectional view showing an embodiment of the present invention. FIG. 2 is a sectional view showing an essential part of the present invention. FIG. 3 is a sectional view showing a conventional example.

[Explanation of Codes] 1 Mirror 2 Mirror Glass 3 Film Sealing Material 4 EC Vapor Deposition Film 5 ITO Vapor Deposition Layer 6 Aluminum Reflection Film 7 Electrode M Automatic Antiglare Mirror 10 Vibration Plate 11 Ultrasonic Vibration Generation Element 12 Adhesive Material 13 Buffer 14 Adhesive 15 Heater panel 16 Space 17 Storage area

Claims (2)

[Scope of utility model registration request] 1. An automatic anti-glare water droplet removal mirror that removes water droplets by generating ultrasonic vibrations on a mirror surface with a vibrating body arranged on the automatic anti-glare mirror, and an adhesive material is provided between a diaphragm and a heater panel. A buffer material is carried through the space, a space is formed between the heater panel and the mirror glass, an EC vapor deposition film is arranged on the back surface of the mirror glass, and is further separated from the sealing material arranged on the back surface. An automatic anti-glare water droplet removal mirror characterized by having a heater panel at the position. 2. The automatic anti-glare water droplet removal mirror according to claim 1, wherein the buffer material is a foam of a polymer material.