JPH0521487Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an anti-glare mirror device for a vehicle that can prevent being dazzled by headlights etc. from a following vehicle while driving at night. In particular, the present invention relates to a vehicle anti-glare mirror device suitable for use in an inside rear view mirror that is bonded to the windshield glass of an automobile.

[Prior Art] In recent years, the brightness of headlights of vehicles such as automobiles has become higher, and as a result, dazzle caused by the headlights has become a problem. For example, if the headlights of a following vehicle are reflected by a rear-view mirror (inside rear-view mirror) and enter the driver's eyes while driving at night, the driver may find it difficult to drive due to the glare.

Therefore, anti-glare mirrors have been developed. As this anti-glare mirror, for example, there is one that applies the dynamic scattering mode of nematic liquid crystal, and a reflective liquid crystal panel constructed by sandwiching nematic liquid crystal between a reflective electrode and a transparent electrode is used as a mirror. . Such anti-glare mirrors can be electrically controlled on/off (day/night switching), and by applying a driving voltage between the reflective electrode and the transparent electrode, the nematic liquid crystal is driven and the reflectance is increased. It's changing. In reality, a phototransistor is installed to detect the headlights of the following vehicle, and when the headlights of the following vehicle are dazzling, such as when using high beams, driving power is applied to detect the reflectance. On the other hand, when the glare is not too bright, such as when using a low beam, automatic control is performed so that the drive voltage is not applied and the reflectance is switched to the normal high reflectance. Note that automatic/manual selection can be made if necessary.

Now, as a device using such an anti-glare mirror, there is a conventional device as shown in FIG. In this device, an anti-glare room mirror (inside rear view mirror) 1 as an anti-glare mirror is fixed by adhesive on the inner surface of a windshield glass 2 at a position separated from a head lining 4 through a ceramic coating 3. There is.

The anti-glare rearview mirror 1 uses a reflective liquid crystal panel 1a having the above-described configuration, and it is necessary to supply driving power to operate the reflective liquid crystal panel 1a. For this reason, the conventional device uses a power harness (power cord) 5. That is, the power supply harness 5 connected to a power supply (not shown) is guided through the head lining 4 to the vicinity of the anti-glare rearview mirror 1, passed through the penetration member 4a attached to the head lining 4, and then inserted into the inner surface of the windshield glass 2. It leads along to the anti-glare rearview mirror 1.

In FIG. 2, reference numeral 1b indicates a phototransistor for detecting the headlight of a following vehicle. Also, 1c
is a mirror base, and this mirror base 1c has:
A drive/control circuit (not shown) is built in to appropriately supply power to the reflective liquid crystal panel 1a based on the detection signal from the phototransistor 1b.

With the above-described configuration, a drive/control circuit (not shown) operates according to the detection result of the phototransistor 1b, and when the headlights of a following vehicle are dazzling, driving power from a power source (not shown) is transmitted through the power harness 5 to the anti-glare system. The driving power is supplied to the rearview mirror 1 and applied to the reflective liquid crystal panel 1a. This makes it possible to reduce reflectance and reduce glare.

[Problems to be Solved by the Invention] However, in the conventional vehicle anti-glare mirror device as described above, since the power supply harness 5 supplies driving power, etc., the power harness 5 is connected to the headlining 4. It is necessary to form a through hole and attach the through member 4a, which increases the number of man-hours for manufacturing the head lining 4 and causes a decrease in productivity.

Further, since the power supply harness 5 is exposed between the anti-glare rearview mirror 1 and the head lining 4, there is also the problem that the appearance from the inside and outside of the windshield glass 2 is poor.

This invention attempts to solve the above-mentioned problems, and improves productivity by supplying driving power without special molding to the head lining, and improves the appearance. An object of the present invention is to provide an anti-glare mirror device for a vehicle.

[Means for solving the problem] Therefore, the vehicle anti-glare mirror device of the present invention has the following features:
A feature is that a conductor print (bus bar) for supplying driving power to the anti-glare mirror is bonded and provided on the windshield glass between the anti-glare mirror and the head lining.

[Function] In the vehicle anti-glare mirror device of the present invention described above, driving power is supplied from the head lining side to the anti-glare mirror side by means of the conductive print having a thin plate structure adhered to the windshield glass.

[Example] Hereinafter, an anti-glare mirror device for a vehicle as an embodiment of the present invention will be explained with reference to the drawings. Fig. 1 shows a partially cutaway view of the anti-glare mirror device for a vehicle as an embodiment of the present invention. FIG. The anti-glare mirror device for a vehicle according to this embodiment is provided as a rearview mirror for an automobile.

As shown in FIG. 1, also in this embodiment, the anti-glare room mirror (inside rear view mirror) 1 as an anti-glare mirror is located on the inner surface of the windshield glass 2 at a position separated from the head lining 6. It is fixed by adhesive via ceramic coating 3.

The anti-glare rearview mirror 1 uses a reflective liquid crystal panel 1a as in the conventional device, and in order to operate this, in this embodiment, a conductive print (bus bar) 7 for supplying driving power is used. is provided on the inner surface of the windshield glass 2 between the anti-glare rearview mirror 1 and the head lining 6 through a ceramic coating 3.

Further, one end of the conductor print 7 is sandwiched between the windshield glass 2 and the head lining 6 and guided inward of the head lining 6, and is led to the vicinity of the anti-glare rearview mirror 1 (not shown). It is connected to a power harness (power cord) 8 connected to a power source. On the other hand, the other end of the conductor print 7 is connected to a lead wire (not shown) in the mirror base 1c of the anti-glare rearview mirror 1, and the driving power is supplied to a drive/control circuit (not shown) built in the mirror base 1c. The light is supplied to the reflective liquid crystal panel 1a via the reflective liquid crystal panel 1a.

In FIG. 1, reference numeral 1b indicates a phototransistor for detecting the headlight of a following vehicle.

Since the anti-glare mirror device for a vehicle as an embodiment of the present invention is constructed as described above, driving power from a power source (not shown) is guided through the head lining 6 to the vicinity of the anti-glare rearview mirror 1. Power is supplied to the reflective liquid crystal panel 1a in the anti-glare rearview mirror 1 through the power supply harness 8 and the conductor print 7 having a thin plate structure. The operation of the anti-glare rearview mirror 1 itself is exactly the same as that of the conventional device, and a drive/control circuit (not shown) operates according to the detection result of the phototransistor 1b, so that when the headlights of the following vehicle are dazzling, A driving voltage is applied to the reflective liquid crystal panel 1a to reduce reflectance and reduce glare.

In this embodiment, the conductor print 7 is
Since it has a thin plate structure, the conductor print 7 can be easily passed through the gap between the windshield glass 2 and the end of the head lining 6 without special molding of the head lining 6 as in the conventional case.

In addition, for supplying driving power, the conductor print 7 is provided in an exposed manner in place of the conventional power supply harness (see reference numeral 5 in FIG. 2).
This conductive print 7 has a good appearance, and combined with the effect of the ceramic coating, the appearance from the inside and outside of the windshield glass 2 is improved compared to the conventional case.

As described above, according to the device of this embodiment, driving power is supplied from the head lining 6 side to the anti-glare rearview mirror 1 side by the conductor print 7 having a thin plate structure bonded on the windshield glass 2. Therefore, there is no need to perform special molding of the head lining 6, and the conventional penetrating member (see reference numeral 4a in Fig. 2) is also no longer required, reducing the number of man-hours for manufacturing the head lining 6 and greatly improving productivity. At the same time, the appearance from the inside and outside of the windshield glass 2 becomes extremely good.

In addition, in this embodiment, an anti-glare mirror device was explained as an automobile rearview mirror, but the anti-glare mirror device according to the present invention can be applied not only to an automobile rearview mirror but also to various other vehicle mirrors. .

In addition, in this embodiment, the mirror base 1c is
Although the configuration includes a built-in control circuit, if this drive/control circuit is installed outside the rearview mirror 1, the power supply line and signal line between the reflective liquid crystal panel 1a and phototransistor 1b and the drive/control circuit are required. A conductive print may be used as the line.

[Effects of the invention] As detailed above, according to the vehicle anti-glare mirror device of the present invention, driving power is supplied to the anti-glare mirror on the windshield glass between the anti-glare mirror and the head lining. It has an extremely simple structure, consisting of adhesively attached conductor prints for
Drive power can be supplied to the anti-glare mirror without special molding of the head lining, and the number of man-hours for manufacturing the head lining can be reduced, so productivity can be greatly increased. Additionally, since the good-looking conductor print is exposed, the appearance from both inside and outside of the windshield glass is greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a partially cut-away side view of a vehicle anti-glare mirror device as an embodiment of the present invention, and FIG. 2 is a partially cut-away side view of a conventional vehicle anti-glare mirror device. It is a diagram. 1... Anti-glare rearview mirror as an anti-glare mirror, 1a... Reflective liquid crystal panel, 1b... Phototransistor for detecting the headlight of a following vehicle, 1c... Mirror base, 2... Windshield glass, 3... …
Ceramic paint, 6... Head lining, 7...
...Conductor print (bus bar), 8...Power harness.

Claims (1)

[Scope of utility model registration request] An anti-glare mirror that operates by being supplied with driving power.
In a vehicle anti-glare mirror device fixedly provided at a position apart from the head lining of the windshield glass, driving power is applied to the anti-glare mirror on the windshield glass between the anti-glare mirror and the head lining. 1. An anti-glare mirror device for a vehicle, characterized in that a conductor print for supplying the same is attached.