JPH0459455A - Vehicle mirror - Google Patents

Abstract

PURPOSE:To provide both a glare shielding function and a water drop removing function by disposing at a predetermined distance from the reverse side mirror body of a glare shield mirror member a supporting member which is associated with the right side transparent body of the glare shield mirror member, and disposing a piezoelectric vibrator in the supporting member. CONSTITUTION:When electricity is transmitted to the electronic element 50 of a glare shield mirror member 4, the color of rays of light in the element 50 is varied and the reflectance of a reverse mirror body 7 is varied and so a voltage applied to the element 50 is adjusted when needed so as to restrain reflected light from the glare shield mirror member 4 caused by the headlamp, etc., of an automobile behind and prevent a driver from being blinded by the glare of the light. An oscillating circuit AC is connected to a piezoelectric vibrator 15 and an AC voltage is applied to a piezoelectric element 17 and then a supporting member 9 is repeatedly bent in the reverse direction and vibration is generated in the member 9. In this case, vibration generated in the member 9 is transmitted from the periphery to the whole of a right side transparent body 5 via an interposing member 11. Objects attached to the surface of the transparent body 5 such as drops of water, etc., are given high kinetic energy and removed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vehicle mirror suitable for an automobile side mirror, etc., and in particular, an anti-glare function using an electrochromic element and an anti-glare function using a piezoelectric vibrator. This invention relates to a vehicle mirror with a removal function.

[Prior Art] Conventional vehicle mirrors of this type include those shown in FIGS. 11 and 1.
The technology shown in Figure 2 can be cited.

FIG. 11 is a partial cross-sectional view showing a conventional vehicle mirror with an anti-glare function, and FIG. 12 is a cross-sectional view showing a vehicle mirror with a water drop removal function disclosed in Japanese Utility Model Application No. 61-30552. It is.

In the vehicle mirror shown in FIG. 11, a holder 31 is formed with an opening portion 32 and a holding portion 33. As shown in FIG. An anti-glare mirror member 34 having a convex surface with a predetermined curvature is housed inside the holder 31 . The anti-glare mirror member 34 includes a front transparent body 35 made of glass exposed from the opening 32 of the holder 31, and a reflective film (as shown in the figure) fixed to the back side of the front transparent body 35 with an adhesive 36 at a predetermined interval. ) and a liquid crystal 38 sealed between the back side mirror body 37 and the front side transparent body 35. The peripheral edge of the front transparent body 350 is held by the holding portion 33 of the holder 31 via a spacer 39.

In the conventional vehicle mirror configured as described above,
When the liquid crystal 38 of the anti-glare mirror member 34 is energized, the transmittance of light rays in the liquid crystal 38 increases or decreases, and the reflectance of the rear side mirror body 37 changes. Therefore, by appropriately adjusting the voltage applied to the liquid crystal 38, it is possible to reduce the light reflected from the anti-glare mirror member 34 by the headlights of the following vehicle, thereby preventing the driver from being dazzled.

On the other hand, in the vehicle mirror shown in FIG. 12, a holder 41 is supported by the vehicle body (path shown) via a stay 42, and the holder 41 has a mirror body 43 made of glass with a reflective film (path shown). is installed. A piezoelectric vibrator 44 that generates vibrations due to the piezoelectric effect is interposed between the holder 41 and the stay 42. A drive circuit 46 and an operation switch 47 in the vehicle interior are connected in series between the piezoelectric vibrator 44 and the power source 45.

In the conventional vehicle mirror configured as described above,
When water droplets adhere to the surface of the mirror body 43, when the operation switch 47 in the vehicle interior is operated, vibrations are generated in the piezoelectric vibrator 44, and the vibrations are propagated to the mirror body 43 via the housing member 41.

Therefore, the image of the mirror body 43 can be made clear by removing water droplets attached to the surface of the mirror body 43 due to its vibration.

[Problems to be Solved by the Invention] Incidentally, the conventional vehicle mirror shown in FIG. 11 has an anti-glare function, but does not have a water droplet removal function. vice versa,
The conventional vehicle mirror shown in FIG. 12 has a water droplet removal function, but does not have an anti-glare function.

Therefore, as a specific means of integrating both functions into a vehicle mirror with both functions, a piezoelectric vibrator is used as shown in the partial cross-sectional view of FIG. 44 may be directly adhered to the back side mirror body 37 of the anti-glare mirror member 34. However, if the piezoelectric vibrator 44 is directly bonded to the back side mirror body 37, when the back side mirror body 37 is subjected to ultrasonic vibration, the back side mirror body 37
vibration is absorbed by the liquid crystal 38, and the anti-glare mirror member 34
Ultrasonic vibrations are not efficiently propagated from the rear mirror body 37 to the front transparent body 35. In addition, due to the difference in linear expansion coefficient due to the temperature conditions during bonding, the front side transparent body 35 and the back side mirror body 37
If the distance between the two parts is different from each other, and the distance around the adhesive part is large, the liquid crystal 38 will turn blackish, and conversely, if the distance around the adhesive part is small, the liquid crystal 38 will turn whitish. A phenomenon occurs. Furthermore, during ultrasonic vibration, spacers (not shown) that manage the gap between the liquid crystal 38 move and become dispersed or concentrated due to the vibration. The interval between the two changes in each part, and the above-mentioned phenomenon occurs.

Therefore, the object of the present invention is to be able to exhibit the anti-glare function without any problems, and to improve the water droplet removal efficiency by the piezoelectric vibrator.
Therefore, it is an object of the present invention to provide a vehicle mirror that has both an anti-glare function and a water droplet removal function.

[Means for Solving the Problems] In order to solve the above problems, the vehicle mirror of the invention of claim 1 includes an electrochromic element between the front side transparent body and the back side mirror body that obtains reflection as a mirror. A supporting member connected to the front transparent body of the anti-glare mirror member is disposed at a predetermined distance from the rear mirror body of the anti-glare mirror member. ,Also,
A piezoelectric vibrator is arranged on the support member.

In the vehicle mirror according to the second aspect of the invention, the electrochromic element constituting the anti-glare mirror member is made of a solid material.

[Function] According to the vehicle mirror of the invention of claim 1, the vibration of the piezoelectric vibrator is directly propagated to the front transparent body via the support member. This reduces the absorption of the vibration within the electrochromic element and excites vibrations sufficient to remove water droplets on the front transparent body. In addition, since the piezoelectric vibrator is fixed to the support member without contacting the rear mirror body, the distance between the front transparent body and the rear mirror body may change due to adhesive strain when fixing the piezoelectric vibrator. Definitely prevented. Therefore, the water droplet removal efficiency of the piezoelectric vibrator can be improved without interfering with the anti-glare function of the electrochromic element.

In the vehicle mirror according to the invention of claim 2, since the electrochromic element constituting the anti-glare mirror member is made of a solid material, the front side transparent body and the rear side mirror body can be separated by ultrasonic vibration, like those using liquid crystal. Since the distance between the support member and the support member does not change and vibration absorption also disappears, the support member can be connected to the front transparent body through the electrochromic element. As a result, an anti-glare effect can be obtained throughout the front transparent body.

[Example] <First Example> First, a first example in which the present invention is embodied as a vehicle mirror will be described based on the drawings. 1 is a longitudinal sectional view showing a vehicle mirror of the first embodiment, and FIG. 2 is a partially enlarged sectional view of FIG. 1.

FIG. 3 is a sectional view of a main part showing the structure of an anti-glare mirror member 4 used in a vehicle mirror according to an embodiment of the present invention, and FIG. 4 is a sectional view of a main part of a vehicle mirror according to an embodiment of the present invention. FIG. 4 is an explanatory diagram illustrating the basic operation of the anti-glare mirror member 4 used in FIG.

As shown in FIGS. 1 and 2, the holder 1 of the vehicle mirror of the first embodiment is molded into a dish shape from a synthetic resin material, and the holder 1 has an opening 2 through which light rays enter and reflect. , a holding portion 3 having a substantially C-shaped cross section surrounding the opening 2
is formed.

Inside the holder 1, an anti-glare mirror member 4 having a convex surface with a predetermined curvature is housed.

The anti-glare mirror member 4 includes a front transparent body 5 made of a glass plate or a transparent synthetic resin plate exposed from the opening 2 of the holder 1, a glass plate or a transparent synthetic resin plate having a smaller area than the front transparent body 5, It consists of a back mirror body 7 made of a metal plate or the like, and an electrochromic element 50 which is interposed between the back mirror body 7 and the front transparent body 5 and constitutes the back mirror body 7 as an electrode. The front side transparent body 5 and the back side mirror body 7 are formed substantially parallel to each other with a predetermined interval, and in particular, the rear side mirror body 7 of this embodiment is a reflective film formed of a metal vapor deposited film or the like. Moreover, it has a function as a sealing body that seals the electrochromic element 50.

That is, as shown in FIG. 4, a typical electrochromic element 50 is formed by layering a transparent electrode 51, a first coloring layer 52, an insulating layer 53, a second coloring layer 54, and a reflective electrode 55. , a sealing body is required on the reflective electrode 55 side to maintain it in a sealed state with respect to the front transparent body 5. Further, the reflective electrode 55 is also used as a transparent electrode or the like when not functioning as a mirror. However, in this embodiment, the electrochromic element 50 functions as a sealing body for sealing one electrode, which is a component of the electrochromic element 50, on the front transparent body 5 side, and as a reflective film as a mirror. The reflective electrode 55 has the following characteristics. Therefore, the reflective electrode 55 of this embodiment uses the backside mirror body 7 as the reflective surface of the mirror and the aforementioned sealing body in common.

As described in detail in FIG. 4, when a voltage is applied to the electrochromic element 50 by an electric circuit, the colored state of the electrochromic element 50 changes, and the anti-glare mirror member 4 changes its coloring state to the rear side mirror. It is configured such that the reflectance of the body 7 can be changed.

On the back side of the back side mirror body 7 of the anti-glare mirror member 4, a support member 9 made of a plate-shaped material such as glass or metal, which is almost the same as the front side transparent body 5, is provided with a predetermined approximately They are arranged in parallel with equal intervals 10. Between the periphery of the support member 9 and the periphery of the front transparent body 5, there is a ring-shaped crow that maintains the distance 10 between the rear mirror body 7 and the support member 9, a metal or glass with low vibration loss such as titanium. An intervening member 11 made of engineering plastic such as cloth epoxy is provided and is fixed to the front transparent body 5 and the support member 9 with an adhesive 12.

Note that the intervening member 11 may be only a thin adhesive layer. Typical implementations consist of only a thin adhesive layer.

A ring-shaped rubber bushing 13 is joined to the periphery of the support member 9 on the side opposite to the intervening member 11, and the protruding piece 14 of the rubber bushing 13 is locked and held by the holding portion 3 of the holder 1. Therefore, in this first embodiment, the periphery of the front transparent body 5 of the anti-glare mirror member 4 and the periphery of the support member 9 are held by the holding portion 3 of the holder 1.

The piezoelectric vibrator 15 is placed so that it does not come into contact with the rear mirror body 7.
It is fixed to the back surface of the support member 9 using an appropriate fixing means such as an adhesive 16. This piezoelectric vibrator 15 is made by conductively bonding electrodes 18 and 19 using a flexible printed circuit board to the front and back surfaces of a flat piezoelectric element 17 made of piezoelectric ceramics, and ultrasonic waves are generated between the electrodes 18 and 19. When a signal is applied, it is configured to generate ultrasonic vibrations due to the piezoelectric effect of the piezoelectric element 17.

The vibration generated in the piezoelectric vibrator 15 spreads throughout the support member 9 and is propagated from its periphery to the front transparent body 5 via the intervening member 11.

Next, the structure of the anti-glare mirror member 4 will be explained.

3 and 4, in this embodiment, the front transparent body 5 made of a glass plate exposed from the opening 2 of the holder 1, and the aluminum (aluminum) that obtains high reflection as a mirror
AI) An electrochromic element 50 is formed between the back side mirror body 7 which is a vapor deposited film. To be precise, the electrochromic element 50 uses the rear mirror body 7 in common.
is formed. The electrochromic element 50 is based on a front side transparent body 5 made of a glass plate, and a transparent electrode (ITO=indium oxide + tin oxide) 51 and a first
Coloring layer (IRTOF-iridium oxide tin decaoxide) 52
, an insulating layer (Ta20.-5 tantalum oxide) 53, a second coloring layer (WO3-tungsten oxide) 54, a reflective electrode (A
A layer of aluminum (I-aluminum) 55 is sequentially formed by vapor deposition or sputtering. The reflective electrode 55 of this embodiment is used in common with the back side mirror body 7 as the reflective surface of the mirror. However, when carrying out the present invention, it is also possible to use a transparent electrode, and furthermore, a sealing body for sealing the electrochromic element 50 on the front transparent body 5 side can also be formed as a separate member. However, if the electrode of the electrochromic element 50 is made of a strong material with good reflective properties like the reflective electrode 55 of this embodiment, the electrode of the electrochromic element 50 and the back side mirror body 7 as a reflective surface of the mirror, Furthermore, by using a common sealing body for sealing the electrochromic element 50, it is possible to save the effort of forming multiple layers and layers for multiple intervals.

The transparent electrode 51, the first coloring layer 52, the insulating layer 53, the second
The coloring layer 54 and the reflective electrode 55 (7) are mutually formed of thin film layers and constitute the electrochromic element 50. Further, the anti-glare mirror member 4 of this embodiment is constituted by the electrochromic element 50 including the reflective electrode 55 (7) and the front side transparent body 5 made of a glass plate.

This type of anti-glare mirror member 4, as shown in FIG. Second
The electrochromic element 50 develops a blue color due to the oxidation-reduction reaction of the coloring layer 54, and the color disappears when a reverse voltage is applied. If this is considered as an anti-glare mirror member 4, the reflectance as a mirror decreases when the color develops blue, and the reflectance as a mirror increases when the color fades.

Next, the basic operation of the vehicle mirror of the first embodiment configured as described above will be explained.

FIG. 5 shows a piezoelectric vibrator 15 in the vehicle mirror shown in FIG.
FIG. 2 is an explanatory diagram illustrating the operation.

When the electrochromic element 50 of the anti-glare mirror member 4 is energized, the coloring of the light beam in the electrochromic element 50 changes, and the reflectance of the back side mirror body 7 changes. Therefore, by appropriately adjusting the voltage applied to the electrochromic element 50, it is possible to reduce the light reflected from the anti-glare mirror member 4 by the headlights of the following vehicle, thereby preventing the driver from being dazzled.

On the other hand, as shown in FIG. 5(a), when the (+) terminal of the power source is connected to the electrode 18 of the piezoelectric vibrator 15, and the (-) terminal of the power source is connected to the electrode 19, the piezoelectric element 17 has a piezoelectric effect. The transverse effect, that is, contraction in the longitudinal direction of the piezoelectric vibrator 15 in its radial direction. At this time, a strong contraction force acts on the back surface of the support member 9, causing the support member 9 to bend downward in the figure.

Further, as shown in FIG. 5(b), contrary to the case (a) above, the (-) terminal of the power source is connected to the electrode 18, and the (-) terminal of the power source is connected to the electrode 18.
When the (+) terminal of a power source is connected to 9, the piezoelectric element 17 expands in the length direction due to the transverse effect. At this time, a strong stretching force acts on the back surface of the support member 9, causing the support member 9 to bend upward in the figure.

Then, as shown in FIG. 5(c), when an oscillation circuit AC is connected to the piezoelectric vibrator 15 and an AC voltage is applied to the piezoelectric element 17, the support member 9 is repeatedly bent in the opposite direction. Vibration occurs. In this case, as shown in Figure 1,
The peripheral edge of the support member 9 is connected to the front side transparent body 5 via the intervening member 11.
Since the support member 9 is fixed to the periphery of the support member 9, vibrations generated in the support member 9 are propagated from the periphery of the back side transparent body 5 to the entirety thereof via the intervening member 11.

Therefore, if the frequency of the AC voltage is selected to an appropriate value, the front transparent body 5 will resonate, and a standing wave that is uniform and large in amplitude will be generated throughout the body, and the standing wave will raise the front transparent body 5. Exercise at speed. At this time, adhering matter such as water droplets, frost, or dust attached to the surface of the front transparent body 5 is given high kinetic energy by the front transparent body 5, and is dripped or atomized by gravity, and is then dropped onto the front transparent body 5. removed from

Next, using the overall configuration diagram of a control device for electrically controlling the vehicle mirror of the first embodiment of the present invention shown in FIG.
Its configuration will be explained.

In FIG. 6, the coloring switch 85 is connected to the anti-glare mirror member 4.
The decoloring switch 8 is a switch that lowers the mirror reflectance of the electrochromic element 50 constituting the
6 is a switch that similarly raises the mirror reflectance of the electrochromic element 50. Vibration switch 8
7 vibrates the piezoelectric vibrator 15 for a predetermined period of time at a frequency that is repeatedly changed between predetermined vibration frequency bands, and is operated when removing water droplets and fog. these are,
It is located inside the vehicle in a position where the driver can easily operate it.

These coloring switch 85, color erasing switch 86, and excitation switch 87 are inputted to the microcomputer 80 via the input circuit 84, and when they are on, "L" is inputted to the input circuit 84, and when they are off, "L" is inputted to the input circuit 84. Enter “H”. The microcomputer 80 is supplied with power from a power supply circuit 83 that is supplied with power from an on-vehicle battery 82.

The output of the microcomputer 80 is supplied to the right drive circuit 60 and the left drive circuit 70 via a relay circuit 81.

AC power in the ultrasonic frequency band that is supplied to the ultrasonic vibrator 64 (piezoelectric vibrator 15 in FIG. 1) of the light side mirror is supplied from the vibrator drive circuit 63. The input of the vibrator drive circuit 63 is supplied from the voltage control oscillation circuit (V-F conversion circuit) 62, and the voltage control generation circuit 62
The output frequency of is determined by the output voltage of the sawtooth wave generating circuit 61. The output voltage of the sawtooth wave generating circuit 61 is controlled by a relay circuit 81 driven by a microcomputer 80. Further, the anti-glare mirror 65 equipped with the electrochromic element 50 has a coloring switch 8
5 or the decoloring switch 86 is turned on, the relay circuit 81 is driven so that the electrochromic element 50 lowers or increases the mirror reflectance.

These, sawtooth wave generation circuit 61, voltage control generation circuit 62
, the vibrator drive circuit 63 and the ultrasonic vibrator 64 generate ultrasonic vibrations necessary to remove water droplets etc. attached to the surface of the front transparent body 5, which is the mirror surface of the light side mirror, and An anti-glare mirror 65 whose mirror reflectance is changed according to the amount of light constitutes a right drive circuit 60.

Similarly, the ultrasonic transducer 74 (first
AC power in the ultrasonic frequency band is supplied to the piezoelectric vibrator 15) in the figure from a vibrator drive circuit 73. The input of the vibrator drive circuit 73 is the voltage controlled oscillation circuit 7
The output frequency of the voltage control generation circuit 72 is determined by the output voltage of the sawtooth wave generation circuit 71. The output voltage of the sawtooth wave generating circuit 71 is controlled by a relay circuit 81 driven by a microcomputer 80. In addition, the electrochromic element 50
When the coloring switch 85 or the color erasing switch 86 is turned on, the anti-glare mirror 75 drives the relay circuit 81 so that the electrochromic element 50 lowers or increases the mirror reflectance.

These, sawtooth wave generation circuit 71, voltage control generation circuit 72
, the vibrator drive circuit 73 and the ultrasonic vibrator 74 generate ultrasonic vibrations necessary to remove water droplets etc. adhering to the surface of the front transparent body 5 which is the mirror surface of the left side mirror, and also generate ultrasonic vibrations as necessary. An anti-glare mirror 75 that changes mirror reflectance accordingly constitutes a left drive circuit 70.

The microcomputer 80 is driven by switch inputs under its program control.

A control program for controlling the vehicle mirror of this embodiment is stored in the ROM of the microcomputer 55, and is controlled as shown in FIG.

FIG. 7 is a flowchart of a control program for controlling a vehicle mirror according to the first embodiment of the present invention.

First, this program starts at the same time as an evening switch (not shown) is turned on. Initialized in step S1, in the initial state, the voltage applied to the electrochromic element 50 is such that the mirror reflectance is increased.
In order to improve its visibility, the relay circuit 81 is operated by setting the decoloring switch 86 to the same state as the turned-on state. In step S2, it is determined whether the coloring switch 85 is on, and when it is on, in step S3, the electrochromic element 50 lowers the mirror reflectance of the anti-glare mirror 65, 75, and the relay circuit 81 is activated to prevent dazzling. make it work. Further, in step S4, it is determined whether the decoloring switch 86 is on, and when it is on, in step S5, the mirror reflectance of the anti-glare mirrors 65 and 75 is increased by the electrochromic element 50 to improve the visibility. Activate the relay circuit 81.

Then, in step S6, it is determined whether the excitation switch 87 is on, and when the excitation switch 87 is on, the time for driving the ultrasonic vibrators 64, 74 (piezoelectric vibrators 15) is set in step S7. In step S8, the ultrasonic transducer 64.
74 is turned on, that is, the ultrasonic frequency of a predetermined frequency band including the resonance frequency of the ultrasonic vibrator 64.74 is repeatedly swept and applied to the ultrasonic vibrator 64.74, and the ultrasonic vibration is turned on in step S9. When the time for driving the children 64 and 74 ends, the routine returns to step S2.

As described above, the vehicle mirror of the first embodiment includes the anti-glare mirror member 4 in which the electrochromic element 5o is formed between the front transparent body 5 and the rear mirror body 7 having a slightly smaller area, and the anti-glare mirror member 4. a support member 9 disposed at a predetermined interval 1o on the back side mirror body 7 of the glare mirror member 4; a piezoelectric vibrator 15 fixed to the support member 9 without contacting the back side mirror body 7; It is located between the periphery of the front transparent body 5 and the periphery of the support member 9 to transmit vibrations of the piezoelectric vibrator 15 to the front transparent body 5.
A holder 1 having an intervening member 11 that propagates to the holder 1 and a holding portion 3 that holds the periphery of the front transparent body 5 and the periphery of the support member 9.
It is composed of.

Therefore, according to the vehicle mirror of the first embodiment, since the piezoelectric vibrator 15 is fixed to the support member 11, there is no fear that the vibration of the piezoelectric vibrator 15 will be absorbed by the holder 1. Moreover, the equal interval 1o between the back mirror body 7 and the support member 9 is maintained by the intervening member 11, and the vibration of the piezoelectric vibrator 15 is propagated to the front transparent body 5 via the intervening member 11. Therefore, sufficient vibration is excited to remove water droplets from the front transparent body 5 without wasting vibrational energy in the electrochromic element 50. In particular, since the electrochromic element 50 constituting the anti-glare mirror member 4 is of an all-solid type, the loss of vibration energy is small, and furthermore, the thickness of each layer is 1000~
The film thickness is about 7000 angstroms, and the total thickness is 2[
μm] or less, the front transparent body 5 and the electrochromic element 50 vibrate together, and the changes in vibration mode and vibration energy are compared to when the front transparent body 5 is used alone. It can be reduced.

Furthermore, since the piezoelectric vibrator 15 is fixed to the support member 9 without contacting the back side mirror body 7, the distance between the front side transparent body 5 and the back side mirror body 7 depends on the temperature at which the piezoelectric vibrator 15 is fixed. There is no risk of the electrochromic element 50 changing, and partial discoloration of the electrochromic element 50 due to local stress being applied thereto is reliably prevented. Therefore, the efficiency of removing water droplets by the piezoelectric vibrator 15 can be improved without interfering with the anti-glare function of the electrochromic element 50.

According to experiments conducted by the inventors, when comparing the surface vibration amplitude of the front transparent body 5 when the electrochromic element 50 is used as an anti-glare means and when a liquid crystal is used, it is found that ), the front transparent body 5 using the electrochromic element 50 has a power of 3.0 [μm] as measured by a laser displacement meter, and the front transparent body 5 using a liquid crystal has a power of 1.3 [μm]. μm], and since the vibration energy on the surface of the front transparent body 5 is proportional to the square of the surface vibration velocity, the front transparent body 5 using the electrochromic element 50 is more than 5 times more advantageous than the liquid crystal. It was confirmed that

According to this first embodiment, especially the intervening member 11
is interposed between the periphery of the front transparent body 5 and the periphery of the support member 9, and the vibration of the support member 9 is propagated to the front transparent body 5 with a large amplitude only via the interposed member 11. Therefore, the vibration of the piezoelectric vibrator 15 can be efficiently propagated to the front transparent body 5 by suppressing attenuation of vibration energy during propagation.

<Second Embodiment> Next, a second embodiment in which the present invention is embodied in a vehicle mirror will be described.

FIG. 8 is a partially enlarged sectional view showing the vehicle mirror of the second embodiment. In the drawings, the same reference numerals as in the first embodiment indicate the same or corresponding components as in the first embodiment.

In the vehicle mirror of this second embodiment, the anti-glare mirror member 4 is formed by depositing or sputtering an electrolytic film between the front transparent body 5 and the rear mirror body 7, which has a slightly larger area than the front transparent body 5. A chromic element 50 is interposed. The electrode on the opposite side of the transparent electrode 51 of the electrochromic element 50 and the back mirror body 7 are not common as in the first embodiment. The rear mirror body 7 of this embodiment is made of a metal plate on which a reflective layer of chromium is formed by vapor deposition or sputter linking on the inner surface.

The support member 9 is formed to be substantially the same as the front side transparent body 5, and is disposed on the rear side mirror body 7 with a predetermined interval 10 therebetween. A piezoelectric vibrator 15 (not shown in FIG. 8) is fixed to the back side of the support member 9 so as not to contact the back side mirror body 7.

The intervening member 11 is interposed between the back surface of the rear mirror body 7 and the peripheral edge of the support member 9 at a position corresponding to the peripheral edge of the front transparent body 5, and It is configured to ensure the interval 10 and to propagate the vibration of the piezoelectric vibrator 15 from the periphery of the support member 9 to the front transparent body 5.

The holder 1 is provided with an opening 2 that exposes the front transparent body 5 and a holding portion 3 that holds the periphery of the rear mirror body 7 via a rubber bushing 13.

Therefore, according to the vehicle mirror of this second embodiment,
In addition to the same effects as the first embodiment, in particular, since only the periphery of the rear mirror body 7 is held by the holding portion 3 of the holder 1, the vibration energy generated by the piezoelectric vibrator 15 is not propagated to the holder 1 side. It becomes difficult. Moreover, the front transparent body 5
Since is the free end on the opening 2 side of holder 1,
Unlike the case of the first embodiment, there is no risk that the contact pressure on the opening 2 side of the holder 1 will adversely affect the visibility of the anti-glare mirror member 4, and the vibration of the piezoelectric vibrator 15 will cause the anti-glare mirror to Since the member 4 vibrates as one, the front transparent body 5
There is no problem that the vibrations excited in the mirror interfere with the vibrations propagated to the rear mirror body 7 and are attenuated. Therefore,
The vibration of the piezoelectric vibrator 15 can be efficiently propagated to the front side transparent body 5, thereby achieving a high water droplet removal effect.

<Third Embodiment> Next, a third embodiment in which the present invention is embodied in a vehicle mirror will be described.

FIG. 9 is a partially enlarged sectional view showing a vehicle mirror according to a third embodiment. In the figures, the same reference numerals as in the first embodiment or the second embodiment indicate the same or corresponding components as in the first embodiment or the second embodiment. Here, only the points that are different from the first embodiment and the second embodiment will be explained.

In the vehicle mirror of this third embodiment, the front side transparent body 5, the back side mirror body 7, and the support member 9 are each formed to have approximately the same size. Further, the intervening member 11 is interposed between the peripheral edge of the back side mirror body 7 and the peripheral edge of the supporting member 9.

The holding portion 3 of the halter 1 holds the periphery of the front side transparent body 5, the periphery of the back side mirror body 7, and the periphery of the support member 9 at the same position.

Therefore, according to the vehicle mirror of this third embodiment,
In addition to the same effects as the first embodiment, in particular, the front side transparent body 5, the back side mirror body 7, and the support member 9 are fixed to each other at almost the same peripheral position, and the fixed portions are used to hold the holder 1. 3, there is no risk of adversely affecting the visibility of the anti-glare mirror member 4. Furthermore, the front side transparent body 5 and the support member 9 are connected at the vibration nodes to prevent piezoelectric vibration. The vibrations of the child 15 can be efficiently propagated to the front transparent body 5, thereby achieving a high water droplet removal effect.

<Fourth Embodiment> Next, a fourth embodiment in which the present invention is embodied in a vehicle mirror will be described.

FIG. 10 is a partial sectional view showing a vehicle mirror according to a fourth embodiment. In the drawings, the same reference numerals as in the first to third embodiments indicate the same or corresponding components as in the first to third embodiments.

In this embodiment, a transparent electrode 51, a first coloring layer 52, an insulating layer 53, a second coloring layer 54, and a reflective electrode 55 (7) are sequentially deposited or sputtered on the entire inner surface of the front transparent body 5, and a thin film is formed on each other. This constitutes an electrochromic element 50 in which layers are formed. Further, the anti-glare mirror member 4 of this embodiment is constituted by the electrochromic element 50 including the reflective electrode 55 (7) and the front side transparent body 5 made of a glass plate. The front side transparent body 5 and the support member 9 are formed almost identically, and both are firmly joined with an adhesive.

The heater 90, which is made by printing a resistor on an insulating substrate made of synthetic resin, removes frost, fog, etc. by heating the front transparent body 5, and the four corners of the heater 90 are bonded with adhesive 91. It is joined to the support member 9. In addition, a heater 90 is provided in the center by a spacer 92.
is softly pressed so as to come into surface contact with the surface of the rear mirror body 7 formed on the front transparent body 5.

Therefore, since the electrochromic element 50 is formed as a strong metal thin film layer by vapor deposition or sputtering, it is possible to firmly bond the front transparent body 5 and the support member 9, and the entire surface of the front transparent body 5 can be effectively used. can do. In particular, in constructing the anti-glare mirror member 4, there is no need for a peripheral member for sealing liquid around the front transparent body 5, and the entire area of the front transparent body can have an anti-glare effect. As a result, visibility can be improved and the holder can be made smaller. Further, by heating the front transparent body 5 with the heater 90, frost, fog, etc. attached to the front transparent body 5 can be removed.

By the way, the piezoelectric element 15 in each of the above embodiments is caused to contract in the length direction by the transverse effect of the piezoelectric effect, and the efficiency is increased to vibrate the front transparent body 5. However, when implementing the present invention, can also utilize the longitudinal effect of the piezoelectric effect.

Further, as described above, the vehicle mirror of the first embodiment of the present invention includes an anti-glare mirror member in which an electrochromic element is disposed between the front transparent body and the rear mirror body, and A support member arranged at predetermined equal intervals, a piezoelectric vibrator fixed to the support member in a non-contact state with the rear mirror body, and a gap between the periphery of the anti-glare mirror member and the periphery of the support member. The holder includes an intervening member interposed therein, and a holder having an opening and a holding portion that holds the periphery of the anti-glare mirror member.

Therefore, the vibration of the piezoelectric vibrator can be efficiently propagated to the front transparent body, and a high water droplet removal effect can be achieved.
The piezoelectric vibrator is supported without contact with the rear mirror body,
By preventing external stress from being applied only to specific parts of the electrochromic element, discoloration can be prevented, thereby providing an excellent performance vehicle mirror that has both a water droplet removal function and an anti-glare function. can.

Further, in the vehicle mirror of the first embodiment, the rear mirror body is formed to have a slightly smaller area than the front transparent body, and the intervening member is interposed between the peripheral edge of the front transparent body and the peripheral edge of the support member.
Since the holder is provided with a holding part that holds the periphery of the front transparent body and the periphery of the support member, the vibration of the piezoelectric vibrator is propagated to the front transparent body only through the intervening member, and the front transparent body is The effect is that the efficiency of propagating vibrations to the body can be further improved.

The vehicle mirror of the first embodiment uses an electrochromic element in the anti-glare mirror member and does not require a liquid such as liquid crystal, so there is less loss of vibration energy and the vibration of the piezoelectric vibrator is transferred to the front side. It can be efficiently propagated to transparent objects, and a high water droplet removal effect can be obtained. Note that even if a gel-like element is used as the electrochromic element, relatively highly efficient propagation can be achieved.

In the vehicle mirror of the second embodiment, the rear mirror body is formed to have a slightly larger area than the front transparent body, and the intervening member is placed between the rear mirror body and the peripheral edge of the support member at a position corresponding to the peripheral edge of the front transparent body. This is because the holder is equipped with a holding part that holds only the periphery of the rear mirror body.
In addition to the effects of the first embodiment, in particular, vibration propagation to the holder side can be suppressed to further improve the propagation efficiency to the front transparent body, and the visibility of the anti-glare mirror member is not adversely affected. It's also effective.

In the vehicle mirror of the third embodiment, the front side transparent body and the back side mirror body are formed to have approximately the same size, and the intervening member is interposed between the periphery of the back side mirror body and the periphery of the support member. , the periphery of the transparent body on the front side, the periphery of the mirror body on the back side,
and a holding part for holding the peripheral edge of the support member, in addition to the effects of the first embodiment, in particular, the front transparent body and the support member are connected at the vibration nodes,
This has the effect that the vibration of the piezoelectric vibrator can be efficiently propagated to the front transparent body, and the visibility of the anti-glare mirror member is not adversely affected.

In addition, in the above embodiment, the front side transparent body, the back side mirror body, and the electrochromic element were exemplified, but when carrying out the present invention, the structure is not limited to the above embodiment. The transparent body can be a transparent body such as a glass plate or a transparent synthetic resin plate, and
The rear mirror body can be made of aluminum, chrome, etc., and other known materials can be used as its constituent materials.

Further, in each of the above embodiments, the electrochromic element and the back side mirror body are formed of a common member, but when implementing the present invention, a sealing member for sealing the back side mirror body and the electrochromic element is used. The electrodes constituting the electrochromic element may be independent from each other, or may be constructed as a separate member that has two functions integrated with each other. Similarly, the support member can also be a rear mirror body.

In each of the above-described embodiments of the present invention, an intervening member made of a thin adhesive or the like is provided between the back side mirror body and the support member to maintain the distance therebetween and to reduce the vibration of the piezoelectric vibrator to the front side. Although it is propagated to a transparent body, when carrying out the present invention, it is possible to use means such as bending the periphery of the support member and maintaining the distance between the two and adhering or mechanically clamping the support member. As a result, the supporting member is connected to the front transparent body of the anti-glare mirror member.

[Effects of the Invention] As detailed above, the vehicle mirror of the invention of claim 1 is an anti-glare mirror in which an electrochromic element is disposed between the front transparent body and the rear mirror body that obtains reflection as a mirror. a support member disposed at a predetermined interval with respect to the rear side mirror body of the anti-glare mirror member and connected to the front side transparent body of the anti-glare mirror member; The device is equipped with a piezoelectric vibrator that generates .

Therefore, the vibration of the piezoelectric vibrator can be efficiently propagated to the front side transparent body, and a high water droplet removal effect can be exhibited.Moreover, since the piezoelectric vibrator can be supported without contacting the rear side mirror body, the piezoelectric vibrator can be supported without contacting the rear side mirror body. It is possible to provide an excellent performance vehicle mirror that eliminates local internal stress changes and has both a water droplet removal function and an anti-glare function using an electrochromic element.

In addition, since an electrochromic element is used in the anti-glare mirror member and does not require a liquid like liquid crystal, there is little loss of vibration energy, and the vibration of the piezoelectric vibrator can be efficiently propagated to the front transparent body, resulting in high water droplets. A removal effect can be obtained.

Since the vehicle mirror of the invention of claim 2 is one in which the electro-lochromic element constituting the anti-glare mirror member of claim 1 is made of a solid material, in addition to the effect of claim 1, vapor deposition or It can be made into a thin film by means such as sputtering, and manufacturing costs can be reduced. Furthermore, the vibration energy consumed by the electrochromic element can be reduced. Unlike liquid crystals, it does not become cloudy when exposed to vibrational energy, and does not require a component to seal liquid in the anti-glare mirror member.
It is possible to provide an anti-glare effect to the entire area of the front transparent body, thereby making it possible to improve visibility and downsize the holder.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing a vehicle mirror according to a first embodiment of the present invention, FIG. 2 is a partially enlarged cross-sectional view of FIG. 1, and FIG. 3 is a vehicle mirror according to a first embodiment of the present invention. FIG. 4 is an explanatory diagram illustrating the basic operation of the anti-glare mirror member used in the vehicle mirror of the first embodiment of the present invention; FIG. 1 is an explanatory diagram explaining the operation of the piezoelectric vibrator of the vehicle mirror in FIG. 1, FIG. 6 is an overall configuration diagram of a control device for electrically controlling the vehicle mirror according to the first embodiment of the present invention, The figure is a flowchart of a control program for controlling a vehicle mirror according to a first embodiment of the present invention;
FIG. 8 is a partial sectional view showing a vehicle mirror according to a second embodiment of the invention, FIG. 9 is a partial sectional view showing a vehicle mirror according to a third embodiment of the invention, and FIG. 10 is a fourth embodiment. FIG. 11 is a partial sectional view showing a conventional vehicle mirror with an anti-glare function, and FIG. 12 is a cross-sectional view showing a conventional vehicle mirror with a water drop removal function. ,
FIG. 13 is a partial sectional view showing an example of use of a vehicle mirror with an anti-glare function. In the figure, 1: Holder 2 Double opening part 3: Holding part 4: Anti-glare mirror member 5: Front side transparent body 7: Back side mirror body 9: Support member 10: Interval 1.1: Interposed member 15: Piezoelectric vibrator 50: Electrochromic element. In the drawings, the same reference numerals and the same symbols indicate the same or equivalent parts. Patent Applicant Aisin Seiki Co., Ltd. Agent Patent Attorney Takehisa Higuchi and 1 other person Figure 3] 4 ;:, ', 511- Figure 12 ↓

Claims (2)

[Claims] (1) An anti-glare mirror member in which an electrochromic element is disposed between a front transparent body and a rear mirror body that obtains reflection as a mirror, and a predetermined interval between the anti-glare mirror member and the rear mirror body. A vehicle mirror, comprising: a support member disposed in the anti-glare mirror member and connected to a front transparent body of the anti-glare mirror member; and a piezoelectric vibrator fixed to the support member and generating vibrations. (2) Claim 1, wherein the electrochromic element constituting the anti-glare mirror member is made of a solid material.
Vehicle mirrors listed in.