JP2019156012A - Door visor for vehicle - Google Patents

Abstract

To provide a door visor for vehicle capable of increasing transmission of light without requiring a driver to perform an operation additionally, in left/right turn of a vehicle.SOLUTION: A door visor 1L, 1R for vehicle is, attached to left/right window frame part on front seats of a vehicle 2 comprising direction indicators 18L, 18R, and comprises a lighting control film 10 capable of adjusting transmission of light on whole or a part of the door visor. In actuation of the direction indicators 18L, 18R, transmission on a side where the direction indicator 18L, 18R is actuated becomes higher, thereby securing a visual field on a side where the direction indicator 18L, 18R is actuated.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a vehicle door visor attached to an upper edge of a window frame of a side window of a vehicle.

  Conventionally, when the side window of a side window of a vehicle is partially opened by reducing the amount of light entering from the outside, such as sunlight, into the vehicle or by slightly lowering the side window There is known a door visor attached for the purpose of preventing rainwater from entering the vehicle (see Patent Document 1).

  The side visor for a vehicle described in Patent Document 1 includes a visor body that is a light-shielding portion, and the visor body has two transparent plastic plates arranged substantially in parallel, and two sheets of transparent plastic plates are disposed between the two transparent plastic plates. A transparent conductive film and a polymer layer are supported in a laminated form. One end of a conducting wire is connected to the two transparent conductive films, and the other end of the conducting wire is connected to the positive electrode (+) and the negative electrode (-) of the vehicle battery, respectively. A predetermined voltage V is applied between the transparent conductive films. To apply the voltage V between the two transparent conductive films, an ON / OFF operation is performed by a switch. This switch is provided as a changeover switch, for example, on a decorative panel in the vehicle interior so that the vehicle occupant can freely operate it.

  In a state where the voltage V is not applied between the two transparent conductive films, the visor body is in an opaque or translucent state to reduce the light transmittance. On the other hand, when the voltage V is applied between the two transparent conductive films, the visor body is in a transparent state, and can be seen from both the front and back sides without reducing the light transmittance. Therefore, it is possible to reduce the light transmittance during fine weather to block sunlight, and during rainy weather, the visor body can be made transparent to prevent rainwater from entering without obstructing the occupant's view.

JP 2003-146072 A

  However, when turning right or left while driving the vehicle with no voltage V applied between the two transparent conductive films, a part of the field of view is blocked by the vehicle side visor when visually confirming the traveling direction. End up. At this time, it is possible to apply the voltage V between the two transparent conductive films by the changeover switch to make the visor body transparent, but the driver needs to operate the changeover switch in addition to the drive operation. The operation is complicated and dangerous.

  SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a vehicle door visor that can solve the above-described problems and can increase the light transmittance without a driver performing a separate operation when the vehicle turns right or left.

  The vehicle door visor according to the invention described in claim 1 is mounted on the left and right window frame portions of the front seat of the vehicle equipped with the direction indicator, and the light control capable of adjusting the light transmittance of all or a part thereof. A vehicle door visor comprising means, wherein the transmittance on the side on which the direction indicator is activated increases when the direction indicator is activated.

  The vehicular door visor according to a second aspect of the present invention is characterized in that by applying a voltage when the direction indicator is operated, the liquid crystal orientation of the dimming means is changed to increase the transmittance. And

  A vehicle door visor according to a third aspect of the present invention includes an illuminance detection unit capable of detecting the illuminance of light, and according to the illuminance detected by the illuminance detection unit when the direction indicator is not operating. And adjusting the transmittance.

  The vehicle door visor according to a fourth aspect of the invention is characterized in that the adjustment of the transmittance can be switched to manual.

  According to the first aspect of the present invention, the light transmittance of the vehicle door visor can be increased according to the operation of the direction indicator.

  According to the second aspect of the present invention, the light transmittance of the vehicle door visor can be controlled by the light control means using the liquid crystal material.

  According to the third aspect of the present invention, the light transmittance of the vehicle door visor can be automatically adjusted.

  According to the fourth aspect of the present invention, the light transmittance of the vehicle door visor can be manually adjusted.

1 is a left side view of a vehicle showing Embodiment 1 of the present invention. It is a figure which shows the side window periphery by the side of a driver's seat similarly. It is a figure which shows the instrument panel periphery of a driver's seat equally. It is a front view of a light control operation part same as the above. It is a block diagram explaining the control of the transmittance | permeability of a light control film equally.

  Embodiments of the present invention will be described below with reference to FIGS. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention.

  As shown in FIG. 1, a driver's side door visor 1R as a vehicle door visor is mounted on an upper edge portion 5A of a window frame portion 5 of a side window 4R provided on a driver's side door 3R of a vehicle 2. Has been. On the other hand, a door visor 1L as a vehicle door visor is also mounted on the upper edge (not shown) of the window frame (not shown) of the side window 4L provided on the door 3L on the passenger seat side. Yes. Since the door visor 1L on the passenger seat side is substantially the same as the door visor 1R on the driver seat side, the door visor 1R on the driver seat side will be described here, and the description on the door visor 1L on the passenger seat side will be omitted. Note that the vehicle 2 of this embodiment is a right-hand drive vehicle.

  The door visor 1R is disposed along the upper edge portion 5A of the window frame portion 5 of the side window 4R, and is attached to the window frame portion 5 by a fixture 6 (see FIG. 2). The rear seat door visor 9 is also attached to the upper edge 8A of the window frame 8 of the side window 7 of the rear seat.

  The door visor 1R is formed of a transparent acrylic resin that absorbs ultraviolet rays and infrared rays. A light control film 10 having a thickness of 0.12 mm is attached to the back surface of the door visor 1R facing the side window 4R. The light control film 10 has flexibility, and can be stuck according to shapes, such as a curve of the door visor 1R. In the present embodiment, the light control film 10 is affixed to the entire back surface of the door visor 1R. However, the light control film 10 is affixed to a range where the transmittance is desired to be adjusted, and only the transmittance of a part of the door visor 1R is adjusted. Good. Moreover, the thickness of the light control film 10 can be selected arbitrarily.

  The light control film 10 includes a liquid crystal cell (not shown) in which a liquid crystal material (not shown) is sandwiched by a transparent film material (not shown) in which an electrode (not shown) and an alignment layer (not shown) are arranged. Is sandwiched between linear polarizing plates (not shown). Then, by changing the voltage V applied to the liquid crystal, the orientation of the liquid crystal can be changed to block or transmit light, or to change the amount of transmitted light. That is, the light transmittance can be controlled.

  Electric power is supplied to the electrode of the light control film 10 from the power supply device 11 of the vehicle 2. The light control film 10 is transparent when the voltage V is not applied, and becomes opaque when the voltage V is applied, and the transmittance can be lowered. Further, by changing the voltage V to be applied, the shading of the light control film 10 can be changed steplessly.

  The change of the transmittance of the light control film 10 can be manually performed by the light control operation unit 12 provided around the driver seat shown in FIG. The light adjustment operation unit 12 is provided with a manual adjustment knob 13. When the manual adjustment knob 13 is turned in one direction (direction of “AUTO” shown in FIG. 4), the transmittance of the light adjustment film 10 is lowered. The transmittance of the light control film 10 can be increased by turning in the other direction ("OFF" direction shown in FIG. 4). When the manual adjustment knob 13 is turned to the maximum in the other direction and the direction display line 14 of the manual adjustment knob 13 is moved to the “OFF” position, the application of the voltage V to the light control film 10 is stopped. Transmittance is maximized. When the direction display line 14 of the manual adjustment knob 13 is moved to the “OFF” position, there is a feeling of clicking, and the direction display line 14 of the manual adjustment knob 13 is set to the “OFF” position without visual recognition by the operator. You can recognize that you have moved.

  Further, when the direction indicator switch 17 disposed in the steering column 16 including the steering shaft (not shown) of the steering wheel 15 of the driver's seat is operated to turn on the right direction indicator 18R, the driver's seat side door is turned on. Application of the voltage V to the light control film 10 affixed on the visor 1R is cut | disconnected. Similarly, when the direction indicating switch 17 is operated and the left direction indicator 18L is turned ON, the application of the voltage V to the light control film 10 attached to the door visor 1L on the passenger seat side is cut off. When the direction indicators 18L and 18R are turned off, the application of the voltage V to the light control film 10 is resumed.

  Here, control of the transmittance of the light control film 10 will be described with reference to FIG. When the manual adjustment knob 13 of the dimming operation unit 12 is rotated to stop the manual adjustment knob 13 at a desired position when the sunlight is dazzling, the control disposed in the vehicle 2 from the dimming operation unit 12 The signal a is transmitted to the unit 19. The control unit 19 transmits a signal b for applying a voltage V corresponding to the stop position of the direction display line 13 to the power supply device 11 based on the signal a, and the power supply device 11 applies a voltage to the light control film 10 based on the signal b. V is applied. In this way, the light control film 10 can be set to a desired transmittance. When the vehicle 2 is driven in this state and the direction indicating switch 17 is operated, a signal c is transmitted from the direction indicating switch 17 to the control unit 19, and based on the signal c, the control unit 19 performs the direction indicator 18R or the direction indication. The device 18L is turned on. The direction indicator 18R or the direction indicator 18L is turned ON, and a signal d is transmitted from the control unit 19 to the direction indicator 18R or the direction indicator 18L. Based on the signal d, the front winker 20, the rear turn signal 21, and the door mirror The blinker 22 blinks. Further, the direction indicator 18R or the direction indicator 18L is turned ON and a signal e is transmitted from the control unit 19 to the power supply device 11, and the voltage V is applied from the power supply device 11 to the light control film 10 based on the signal e. Stopped. At this time, when the right direction indicator 18R is turned ON, the application of the voltage V to the light control film 10 attached to the door visor 1R on the driver's seat side is stopped, and the left direction indicator 18L When turned ON, the application of the voltage V to the light control film 10 affixed to the passenger side door visor 1L is stopped. When the direction indicators 18L and 18R are turned OFF by the operation of the direction indicating switch 17 or the handle 15 of the vehicle 2, the signal b is transmitted from the control unit 19 to the power supply device 11, and the power supply device 11 adjusts based on the signal b. Application of the voltage V to the optical film 10 is resumed. The voltage V applied at this time is a voltage V corresponding to the stop position of the direction display line 14 of the manual adjustment knob 13.

  As shown in FIG. 2, an illuminance sensor 23 is attached to the surface of the door visor 1R as an illuminance detection unit that detects the illuminance L of light applied to the door visor 1R. The controller 19 adjusts the transmittance of the light control film 10 to a preset value according to the illuminance L detected by the illuminance sensor 23. When the direction display line 14 of the manual adjustment knob 13 of the dimming operation unit 12 shown in FIG. 4 is stopped at the “AUTO” position, the illuminance sensor 23 is activated. When the direction display line 14 of the manual adjustment knob 13 is moved to the “AUTO” position, there is a feeling of clicking, and the direction display line 14 of the manual adjustment knob 13 is “AUTO” without visual recognition. The movement to the position can be recognized. In this embodiment, the illuminance sensor 23 is attached only to the door visor 1R on the driver's seat side, but the illuminance sensor 23 is also attached to the surface of the door visor 1L on the passenger seat side, and the transmittance of the left and right door visors 1L and 1R. May be controlled separately. The illuminance sensor 23 is not necessarily attached to the door visors 1L and 1R, and may be attached to the surface portion of the vehicle 2 in the vicinity of the door visors 1L and 1R.

  Here, control of the transmittance of the light control film 10 according to the illuminance L detected by the illuminance sensor 23 will be described with reference to FIG. When the direction display line 14 is moved to the “AUTO” position, a signal f is transmitted from the dimming operation unit 12 to the control unit 19. Based on the signal f, the control unit 19 transmits a signal g for starting the operation to the illuminance sensor 23, and the illuminance sensor 23 is driven based on the signal g. The illuminance sensor 23 transmits the detected illuminance L to the control unit 19, and the control unit 19 transmits a signal b to the power supply device 11 so as to have a transmittance corresponding to the illuminance L. A predetermined voltage V is applied from the power supply device 11 to the light control film 10 based on the signal b.

  In the state where the direction indicator 18R or the direction indicator 18L is ON, the automatic control of the transmittance of the light control film 10 is not performed even if the direction display line 14 is stopped at the “AUTO” position. Further, when the transmittances of the door visors 1L and 1R are separately controlled, the transmittance of the light control film 10 on the direction indicator 18R or the direction indicator 18L which is turned on is not automatically controlled. Only the automatic control of the transmittance of the light control film 10 on the direction indicator 18R or the direction indicator 18L side that is not turned on is performed.

  As described above, the vehicle door visors 1L and 1R according to the present embodiment are mounted on the left and right window frame portions 5 of the vehicle 2 provided with the direction indicators 18L and 18R, and all or a part of the light is transmitted. A vehicle door visor 1L, 1R provided with a light control film 10 as a light control means capable of adjusting the transmittance, on the side where the direction indicators 18L, 18R are operated when the direction indicators 18L, 18R are operated. By increasing the light transmittance of the vehicle door visors 1L and 1R, the light of the door visors 1L and 1R on the side of the direction indicators 18L and 18R that are activated only by operating the direction indicator switch 17 while the vehicle 2 is traveling. Therefore, it is possible to prevent the field of view from being obstructed by the door visors 1L and 1R. When making a right or left turn while the vehicle 2 is traveling, the transmittance of the door visors 1L and 1R on the right turn or left turn side is increased, so that visibility of the traveling direction of the vehicle 2 can be secured.

  Further, the vehicle door visors 1L and 1R of the present embodiment include an illuminance sensor 23 as an illuminance detection unit capable of detecting the illuminance L of the light, and the illuminance sensor 23 when the direction indicators 18L and 18R are not operated. By adjusting the transmittance according to the illuminance L detected by the vehicle, the light transmittance of the vehicle door visors 1L, 1R is automatically adjusted according to the illuminance L irradiated to the vehicle door visors 1L, 1R from the outside. Can be adjusted. Therefore, the driver does not need to perform an operation for adjusting the transmittance.

  Further, the vehicle door visors 1L and 1R according to the present embodiment can switch the transmittance adjustment to manual, so that the driver can select automatic or manual adjustment of the transmittance. When switched to, the desired transmittance can be manually set.

  In Example 2 of the present invention, the light control film 10 as the light control means is opaque when the voltage V is not applied. However, when the voltage V is applied, the alignment of the liquid crystal in the light control film 10 changes to change the transmission. The rate increases and becomes transparent. Then, by changing the voltage V to be applied, the shading of the light control film 10 can be changed steplessly, and the transmittance can be controlled.

  Control of the transmittance of the light control film 10 of the present embodiment will be described with reference to FIGS. 4 and 5. When the manual adjustment knob 13 is turned in one direction (the direction of “AUTO” shown in FIG. 4), the transmittance of the light control film 10 can be increased, and when turned in the other direction (the direction of “OFF” shown in FIG. 4). The transmittance of the light control film 10 can be lowered. When the manual adjustment knob 12 is turned to the maximum in the other direction and the direction display line 14 of the manual adjustment knob 13 is moved to the “OFF” position, the application of the voltage V to the light control film 10 is stopped. Transmittance is lowest. Further, when the direction display line 14 of the manual adjustment knob 13 of the light adjustment operation unit 12 is stopped at the “AUTO” position, the illuminance sensor 23 is activated, and the dimming film according to the illuminance detected by the illuminance sensor 23. The transmittance of 10 is adjusted to a preset value. Therefore, the adjustment of the transmittance can be switched between manual and automatic by operating the manual adjustment knob 13, and the transmittance is automatically adjusted when the direction display line 14 is stopped at the “AUTO” position. The transmittance can be manually adjusted by rotating the direction display line 14 between “OFF” and “AUTO”.

  The vehicle 2 is driven in a state in which the manual adjustment knob 13 is rotated to set the light control film 10 to a desired transmittance (including the state where the application of the voltage V to the light control film 10 is stopped), and a direction is indicated. When the switch 17 is operated, a signal c is transmitted from the direction indicating switch 17 to the control unit 19, and the control unit 19 turns on the direction indicator 18R or the direction indicator 18L based on the signal c. The direction indicator 18R or the direction indicator 18L is turned ON, and a signal d is transmitted from the control unit 19 to the direction indicator 18R or the direction indicator 18L. Based on the signal d, the front winker 20, the rear turn signal 21, and the door mirror The blinker 22 blinks. In addition, the direction indicator 18R or the direction indicator 18L is turned ON and a signal b is transmitted from the control unit 19 to the power supply device 11, and a predetermined voltage V is applied from the power supply device 11 to the light control film 10 based on the signal b. Thus, the transmittance of the light control film 10 is maximized. At this time, when the right direction indicator 18R is turned ON, the transmittance of the light control film 10 affixed to the driver side door visor 1R is maximized, but the passenger side door visor 1L The transmittance of the attached light control film 10 does not change. On the other hand, when the left direction indicator 18L is turned ON, the transmittance of the light control film 10 affixed to the passenger side door visor 1L is maximized, but it is affixed to the driver side door visor 1R. The transmittance of the light control film 10 is not changed. When the direction indicators 18L and 18R are turned OFF by the operation of the direction indicating switch 17 or the handle 15 of the vehicle 2, the signal b is transmitted from the control unit 19 to the power supply device 11, and the power supply device 11 adjusts based on the signal b. Application of the voltage V to the optical film 10 is resumed. The voltage V applied at this time is a voltage V corresponding to the stop position of the direction display line 14 of the manual adjustment knob 13.

  As described above, the vehicle door visors 1L and 1R according to this embodiment increase the transmittance by applying the voltage V when the direction indicators 18L and 18R are operated to change the orientation of the liquid crystal included in the light control film 10. This prevents the field of view from being obstructed by the vehicle door visors 1L and 1R while the direction indicators 18L and 18R are in operation, and ensures a field of view in the traveling direction when turning right or left.

  In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, the transmittance of the door visors 1L and 1R can be performed separately on the left and right sides, and a switch is provided in the dimming operation unit 12, and the manual adjustment knob 13 is selected after selecting one of the door visors 1L and 1R by the switch. The light transmittance of the door visors 1L and 1R selected by the above may be adjustable.

1L, 1R Door visor (Vehicle door visor)
2 Vehicle 5 Window frame 10 Light control film (light control means)
18L, 18R Direction indicator 23 Illuminance sensor (illuminance detector)
L Illuminance V Voltage

Claims (4)

A vehicle door visor that is mounted on a window frame portion on the left and right of a front seat of a vehicle equipped with a direction indicator and includes a light control means capable of adjusting the transmittance of all or part of the light,
The vehicle door visor is characterized in that when the direction indicator is operated, the transmittance on the side on which the direction indicator is operated is increased.   2. The vehicle door visor according to claim 1, wherein the transmittance is increased by changing a liquid crystal orientation of the light control means by applying a voltage when the direction indicator is operated. 3. Equipped with an illuminance detector that can detect the illuminance of light,
The vehicle door visor according to claim 1 or 2, wherein the transmittance is adjusted according to the illuminance detected by the illuminance detection unit when the direction indicator is not in operation.   The vehicle door visor according to claim 3, wherein the adjustment of the transmittance can be manually switched.

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