JP2009029245A - Anti-dazzle device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safe anti-dazzle device for a vehicle, which is not an obstacle by evacuating the device to a storage position when the device is unnecessary, makes the liquid crystal panel hard to be damaged, and prevents glass and liquid used in the liquid crystal panel from scattering, even if the liquid crystal panel should be damaged. <P>SOLUTION: The liquid crystal panel 5 is mounted by being bonded to an inner peripheral part of a frame 3 for a sun visor. The liquid crystal panel 5 including the frame 3 is covered with a transparent film 27 formed into a bag shape from the outside. The liquid crystal panel 5 and the frame 3 for the sun visor are rotatable in the vertical direction around a shaft of a lateral side part 16b of a shaft member 16 between a use position along an internal surface of a front window 2 and the storage position on the ceiling part 17 side, and can be evacuated to the storage position when unnecessary. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an antiglare device for a vehicle including a liquid crystal panel.

  For example, in Patent Document 1, a liquid crystal film (liquid crystal panel) is mounted on the inner side of a front window of an automobile (vehicle), a light sensor that detects the incident direction and received light intensity of sunlight is attached to a room mirror, and A configuration is disclosed in which the control device automatically controls the light transmittance of each part of the liquid crystal film based on the detection signal, thereby preventing glare while ensuring the driver's field of view.

Patent Document 2 discloses an incident direction sensor that detects an incident direction of sunlight by rotatably mounting an arm portion to which a liquid crystal visor element having a plurality of shutter regions is attached to a ceiling portion of the vehicle interior. Based on the detection signal of the incident direction sensor, the control unit controls the required shutter region of the liquid crystal visor element to be in an opaque state, thereby preventing glare while ensuring the driver's field of view. What has been configured is disclosed.
Japanese Patent No. 3688637 JP 2002-202486 A

The conventional ones described above have the following drawbacks.
In the thing of patent document 1, since the liquid crystal film is affixed on the inner surface of a front window, even if it is a case where anti-glare is unnecessary, the liquid crystal film cannot be moved to a retracted position, and becomes obstructive. . In the case of using liquid crystal, the image density during non-energization is related to the image density during energization because of the characteristics of the liquid crystal. Become. Furthermore, when the liquid crystal film (liquid crystal panel) is damaged, the glass or liquid used in the liquid crystal film is scattered, which is dangerous.

  On the other hand, in Patent Document 2, it is said that the liquid crystal visor element is attached to the movable arm portion, but the holding structure is unknown. Further, when the liquid crystal visor element is damaged, the glass or liquid used in the liquid crystal visor element is scattered, which is dangerous as in the case of Patent Document 1.

  The present invention has been made in view of the above-described circumstances, and its purpose is to prevent it from getting in the way by retracting it to the storage position when it is unnecessary, and the liquid crystal panel is hard to break, and should be damaged. Even in this case, the object is to provide a safe anti-glare device for a vehicle that can prevent the glass and liquid used in the liquid crystal panel from scattering.

  In order to achieve the above-described object, an antiglare device for a vehicle according to the present invention includes a use position disposed along the front window at the upper part of the vehicle on the indoor side of the front window, and a storage retracted from the front window. A frame for a sun visor that is movably provided between positions, and an outer peripheral portion that is fixedly attached in the sun visor frame by joining an outer peripheral portion to an inner peripheral portion of the sun visor frame. A liquid crystal panel movable between the use position and the storage position together with the frame, a transparent film provided so as to cover the liquid crystal panel together with the frame for the sun visor, and the liquid crystal panel are located at the use position In such a state, a light shielding pattern having a predetermined size is formed on the liquid crystal panel according to the position of the sun. Characterized by comprising a control means for driving and controlling the liquid crystal panel.

  According to the present invention, in a state where the liquid crystal panel is located at the use position, the control unit drives and controls the liquid crystal panel according to the position of the sun to form a light shielding pattern having a predetermined size on the liquid crystal panel. Since the light shielding pattern is formed at a portion where a straight line connecting the sun and the eyes of the user (driver) intersects the liquid crystal panel, it is possible to prevent glare of sunlight for the user.

  The liquid crystal panel is fixedly attached in the sun visor frame by joining the outer peripheral portion of the liquid crystal panel to the inner peripheral portion of the frame-shaped sun visor frame. The liquid crystal panel can be moved between the use position and the storage position together with the sun visor frame. Therefore, when anti-glare is necessary, the liquid crystal panel is moved to the use position and is moved to the storage position when unnecessary. By doing so, you can avoid getting in the way. Since the liquid crystal panel is covered with a transparent film from the outside together with the sun visor frame, the liquid crystal panel can be hardly damaged. In addition, even if the liquid crystal panel is broken, it is possible to prevent the glass and liquid used in the liquid crystal panel from being scattered and to improve safety.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, in FIG. 7, the anti-glare device body 1 of the vehicle anti-glare device of the present invention is installed in the upper part of the driver seat side on the indoor side of the front window 2 in an automobile (vehicle). The anti-glare device body 1 will be described with reference to FIGS.
In FIG. 1, the sun visor frame 3 in the anti-glare device body 1 is formed, for example, by bending a metal bar into a horizontally long frame shape. The one end 3a and the other end 3b of the sun visor frame 3 face each other with the one end 3a slightly above the other end 3b in the upper right part of FIG. In the sun visor frame 3, a cylindrical pipe 4 is fitted to the left side of the upper side 3c near the one end 3a (see FIG. 2). A liquid crystal panel 5 is arranged inside the sun visor frame 3. The liquid crystal panel 5 is fixedly attached to the sun visor frame 3 by joining the outer peripheral portion thereof to the inner peripheral portion of the sun visor frame 3 by bonding with an adhesive.

  As shown in FIG. 6, the liquid crystal panel 5 contains the liquid crystal 8 between the transparent electrodes 6 and 7 facing each other, and the glass 9 and 10 and the polarizing plates 11 and 12 are disposed outside the transparent electrodes 6 and 7, respectively. It becomes the composition. The liquid crystal panel 5 having such a configuration changes the light refraction angle of the liquid crystal as the voltage applied to the transparent electrodes 6 and 7 is controlled by a control device 13 (see FIG. 9) to be described later. , 12 are combined to change the light transmittance and form an image.

  The sun visor frame 3 and the liquid crystal panel 5 are supported by the shaft member 16 via the frame support fitting 15 at the upper right part in FIG. The shaft member 16 has a shape in which a hollow cylindrical pipe is bent in an L shape, and integrally includes a vertical side portion 16a oriented in the vertical direction and a horizontal side portion 16b extending in the horizontal direction. ing. A vertical side portion 16a of the shaft member 16 is rotatably inserted into a through hole 18a of a shaft fulcrum member 18 attached to the ceiling portion 17 of the automobile. A cam plate 19 is attached to the upper end portion of the vertical side portion 16a by a speed nut 20 so as not to come off. The cam plate 19 is attached so as to be rotatable around the axis of the vertical side portion 16a integrally with the vertical side portion 16a. A compression coil spring 21 is disposed on the outer peripheral portion of the vertical side portion 16 a between the cam plate 19 and the shaft fulcrum member 18, and the shaft member 16 is connected to the shaft fulcrum member via the compression coil spring 21. 18 is supported.

  One end 3 a and the other end 3 b of the sun visor frame 3 are supported in a fixed state by the frame support bracket 15, and the frame support bracket 15 is disposed on the outer peripheral portion of the lateral side portion 16 b of the shaft member 16 in the direction around the axis. It is fitted in a rotatable state. A moderation leaf spring 22 is attached to the outer peripheral portion of the distal end portion of the lateral side portion 16b so as to be rotatable around the axis of the lateral side portion 16b. As shown in FIG. 3, the leaf spring 22 is provided with two moderation protrusions 23 that protrude toward the side 16b. On the side 16b side, moderation holes 24 are formed at two opposing positions. These moderation protrusions 23 and moderation holes 24 constitute moderation means. The lower end of the leaf spring 22 is fixed to the frame support bracket 15. A part of the outer peripheral portion of the liquid crystal panel 5 is also bonded to the frame support bracket 15 by bonding.

  In the liquid crystal panel 5, the lead wire 25 connected to the transparent electrodes 6 and 7 passes through the inside of the frame support bracket 15 and is inserted into the lateral side portion 16 b from the opening portion 16 c formed in the lateral side portion 16 b of the shaft member 16. Furthermore, it is led out to the ceiling part 17 side through the inside of the vertical side part 16a. A connector 26 is provided at the tip of the lead wire 25. The liquid crystal panel 5, the sun visor frame 3 and the frame support fitting 15 are covered from the outside by a resin-made transparent film 27 (in FIG. 1, the transparent film 27 is indicated by a two-dot chain line). As shown in FIGS. 4 and 5, the transparent film 27 has a bag shape with the top opened before assembly, and the liquid crystal panel 5, the sun visor frame 3, and the frame support fitting 15 are connected to the transparent film 27. After being accommodated in 27, the upper opening is closed by, for example, high-frequency welding. In FIG. 4, the welding wire 28 by a high frequency is shown by a two-dot chain line.

  As shown in FIG. 2, a clip 29 having a lower opening is fixedly attached to a portion corresponding to the pipe 4 of the sun visor frame 3 in the ceiling portion 17. By fitting the pipe 4 portion of the sun visor frame 3 to the clip 29 from below, the left free end of the sun visor frame 3 is detachably supported by the clip 29.

  Here, the sun visor frame 3 and the liquid crystal panel 5 are rotated around the axis of the lateral side portion 16b of the shaft member 16 via the frame support bracket 15 with the pipe 4 portion supported by the clip 29. A vertical direction (arrow A1 in FIG. 1) between a use position (position indicated by a solid line in FIG. 1) arranged along the inner surface of the front window 2 and a storage position (not shown) arranged on the ceiling portion 17 side. Can be rotated. Further, the sun visor frame 3 and the liquid crystal panel 5 are rotated in the direction around the axis of the vertical side portion 16a with the vertical side portion 16a of the shaft member 16 as a fulcrum in a state where the pipe 4 portion is removed from the clip 29. 1 and 7 can be rotated horizontally (see arrow A2 in FIGS. 1 and 7) between the front window 2 side indicated by the solid line in FIGS. 1 and 7 and the side window 30 on the right side of the driver's seat (see FIG. 7). It has become.

In this case, the antiglare device body 1 is constituted by the sun visor frame 3, the liquid crystal panel 5, the frame support bracket, the leaf spring 22, and the shaft member 16.
The shaft fulcrum member 18 is provided with a position detection switch 31 (see FIG. 1) comprising a micro switch that constitutes the position detection means of the present invention. The position detection switch 31 includes an operating element 32 that is biased in a direction protruding upward, and a lever 33 that operates the operating element 32, and the lever 33 is operated by the cam plate 19. It is like that.

  Here, when the sun visor frame 3 and the liquid crystal panel 5 are rotated toward the front window 2 as shown in FIG. 1, the lever 33 is pressed downward by the cam plate 19, and the operating element 32 is moved to the lever 33. The position detection switch 31 is turned on. When the sun visor frame 3 and the liquid crystal panel 5 are rotated toward the side window 30, the cam plate 19 is rotated in the same direction together with the shaft member 16, and the pressing by the cam plate 19 against the lever 33 is released. As a result, the pressure applied to the operating element 32 by the lever 33 is released, and the position detection switch 31 is turned off. Therefore, depending on whether the position detection switch 31 is on or off, the sun visor frame 3 and the liquid crystal panel 5 are rotated to the front window 2 side or to the side window 30 side. You can see if you are.

FIGS. 8A and 8B show an example of the solar radiation sensor 35. The solar radiation sensor 35 is installed on the inner surface of the front window 2 on the front side (front side of the automobile) of the inner mirror 36 (see FIG. 7) in the passenger compartment. The solar radiation sensor 35 has the following configuration.
A sensor case 37 of the solar radiation sensor 35 has a rectangular shape as a whole, and includes a light receiving path 38 having an open front surface at a substantially central portion of a front portion (upper portion in FIG. 8A). The light receiving path 38 is formed by a space portion surrounded by a light incident limiting wall 39. On the outer peripheral portion of the front portion of the light entrance restriction wall 39, an overhang portion 40 that projects to the side is provided integrally. The terminal end side (the lower side of FIG. 8A) of the light receiving path 38 is a bottom surface portion 42 in which a light receiving window 41 having a small opening area is formed in the central portion.

  A printed circuit board 43 is attached to the back side of the sensor case 37 (the lower surface side in FIG. 8A) with screws 44, and a light receiving element 45 is mounted on the upper surface of the printed circuit board 43. The light receiving surface 46 of the light receiving element 45 faces the light receiving window 41 from the lower side of the bottom surface portion 42 (lower side of FIG. 8A). A plurality of terminals 47 are provided on the printed circuit board 43 so as to protrude sideways, and these terminals 47 protrude to the side of the sensor case 37.

  An ultraviolet cut filter (optical filter) 48 is attached to the light receiving path 38 on the entrance side (upper side in FIG. 8A) from the light receiving surface 46. The ultraviolet cut filter 48 is formed, for example, using resin, glass or the like as a base material so as to prevent the transmission of ultraviolet rays, and is one type consisting of Al, Si, Ti, V, Cr, Mn, Fe, and the like. The thin film of zinc oxide having an extremely small amount of the above metal elements is deposited or sputtered on a substrate. Around the ultraviolet cut filter 48, a convex portion 49 is provided in a frame shape so as to surround it. The side surface of the light receiving path 38 between the light receiving window 41 and the ultraviolet cut filter 48 is a slope 50 inclined toward the light receiving window 41 side.

The light receiving surface 46 is divided into four light receiving areas in accordance with the center line of FIG. 8B, and the light receiving intensity in each of the divided areas can be detected independently. Therefore, the incident direction of sunlight incident on the light receiving path 38 can be detected by detecting the difference in received light intensity between these four regions.
The solar radiation sensor 35 configured as described above has an adhesive 51 (see FIG. 8A) applied to the front surface of the sensor case 37 with the light receiving surface 46 facing forward, which is the traveling direction of the vehicle. It is directly attached to the inner surface of the front window 2.

  In the solar radiation sensor 35 having the above-described configuration, the incident angle of sunlight incident on the light receiving path 38 is limited in accordance with the dimensions of the light incident limiting wall 39 and the light receiving window 41. From the center of the light receiving element 45, as shown by a two-dot chain line in FIG. 8A, the incidence in the region connecting the entrance side end portion (front end portion of the light entrance restriction wall 39) of the light receiving path 38 and the light receiving window 41. Only light having an angle (see the light incident range angle θ) reaches the light receiving surface 46 of the light receiving element 45 through the light receiving window 41. When entering the light receiving path 38, the ultraviolet rays contained in the sunlight are cut by the ultraviolet cut filter 48, so that some of the other infrared and visible light components are transmitted and received by the light receiving element 45. Is done. And the detection data of the received light intensity for each light receiving area detected by the light receiving element 45 is outputted to the control device 13 and the magnitude of the received light intensity of each area is compared, and based on the comparison result, the solar sensor 35 The incident direction of sunlight (the position of the sun) is detected based on the direction in which the light receiving surface 46 faces.

  FIG. 9 is a block diagram showing a schematic configuration of the electrical configuration of the vehicle antiglare device of the present invention. In FIG. 9, the control device 13 constituting the control means includes a microcomputer, and is provided on the side of the automobile (vehicle). The position detection switch 31 and the solar radiation sensor 35 are connected to the control device 13. The control device 13 has a function of driving and controlling the liquid crystal panel 5 based on signals from the position detection switch 31 and the solar radiation sensor 35 and a program provided in advance.

Next, the operation of the above configuration will be described.
As shown by the solid lines in FIGS. 1 and 7, when the sun visor frame 3 and the liquid crystal panel 5 are positioned at the use positions, the moderation protrusions 23 of the leaf springs 22 fit into the corresponding moderation hole portions 24. Is held in its use position. At this time, the position detection switch 31 is turned on when the operating element 32 is pressed by the lever 33, and the signal is input to the control device 13. The solar radiation sensor 35 detects sunlight incident on the light receiving surface 46 and outputs the detection signal to the control device 13.

  The control device 13 determines that the sun visor frame 3 and the liquid crystal panel 5 are rotated to the front window 2 side based on the ON signal of the position detection switch 31. Further, the control device 13 calculates the position of the sun based on the detection signal of the solar radiation sensor 35, and drives the liquid crystal panel 5 so as to form a light shielding pattern 55 (see FIG. 1) on the liquid crystal panel 5 according to the position of the sun. Control. In the liquid crystal panel 5, the light transmittance is reduced in the portion where the light shielding pattern 55 is formed, and the portion other than the light shielding pattern 55 is maintained in a transparent state. Thereby, in the liquid crystal panel 5, the light-shielding pattern 55 comes to be formed in the part which the straight line which connects the sun and a user's (driver | operator) eyes cross | intersects the liquid crystal panel 5, and the sunlight with respect to a user is formed. Dazzling can be prevented. In the liquid crystal panel 5, the current date and time is displayed by characters 56 in the lower right part. In this case, the control device 13 has an image processing function, a gamma correction function, and an alternating processing function in order to drive and control the liquid crystal panel 5.

  Here, the light-shielding pattern 55 is set to a horizontally long oval shape having a vertical L1 of 60 mm and a horizontal L2 of 140 mm. The light shielding pattern 55 is set to such a size for the following reason. That is, the size of the sun as seen from the automobile is about 20 mm in diameter, and the standard distance between the left and right eyes of a person is about 80 mm. It needs to be a simple shape. Practically, the above-mentioned size was set with a margin in the vertical L1 and horizontal L2. Therefore, it is preferable that the light shielding pattern 55 has a horizontally long shape in which the vertical L1 is 20 mm or more and the horizontal L2 is 100 mm or more.

  When the incident direction of sunlight with respect to the front window 2 changes, the solar sensor 35 detects this, and the control device 13 calculates the position of the sun based on the detection signal of the solar sensor 35, and based on that, the position of the light shielding pattern 55 To change.

  On the other hand, when sunlight enters from the side window 30 on the right side of the driver's seat, the user uses the sun visor frame 3 and the liquid crystal panel 5 with the vertical side portion 16a of the shaft member 16 as a fulcrum. It is turned to the window 30 side (see the two-dot chain line in FIG. 7). Then, the position detection switch 31 is switched from the on state to the off state, and this signal is input to the control device 13. Then, the control device 13 switches the entire surface of the liquid crystal panel 5 so as to be in a light shielding state regardless of the detection signal of the solar radiation sensor 35. Thereby, the glare of the sunlight from the side window 30 side with respect to a user can be prevented.

  On the other hand, when there is no need for light shielding and the anti-glare device body 1 is not used, the sun visor frame 3 and the liquid crystal panel 5 are moved upward from the use position of FIG. 1 with the lateral side portion 16b of the shaft member 16 as a fulcrum. Turn to retracted position. Thereby, the glare-proof apparatus main body 1 is located in the position retracted from the front window 2, and can prevent the user (driver) from obstructing the field of view.

According to the above configuration, the following operational effects can be obtained.
First, since the liquid crystal panel 5 can be moved between the use position and the storage position together with the sun visor frame 3, the liquid crystal panel 5 is moved to the use position when anti-glare is necessary, and is stored when it is not necessary. By moving to a position, you can avoid getting in the way.
Since the liquid crystal panel 5 and the sun visor frame 3 are covered with the transparent film 27 from the outside, the liquid crystal panel 5 can be hardly damaged, and the mounting strength between the liquid crystal panel 5 and the sun visor frame 3 can be improved. . Moreover, even if the liquid crystal panel 5 is damaged, it is possible to prevent the liquids of the glasses 9 and 10 and the liquid crystal 8 used in the liquid crystal panel 5 from being scattered, thereby improving safety.

  The liquid crystal panel 5 includes a position detection switch 31 that detects a state in which the liquid crystal panel 5 is rotated to the front window 2 side with the shaft member 16 as a fulcrum, and a state in which the liquid crystal panel 5 is rotated to the side window 30 side. In a state where the liquid crystal panel 5 is detected to be rotated to the front window 2 side by 31, a light shielding pattern 55 having a predetermined size is formed on the liquid crystal panel 5 according to the position of the sun, and the position detection switch 31 In a state where it is detected that the liquid crystal panel 5 is rotated to the side window 30 side, the entire surface of the liquid crystal panel 5 is configured to be in a light shielding state. Thereby, with respect to a user (driver | operator), not only the light from the front but the light from the side can be favorably acquired.

  The light shielding pattern 55 formed on the liquid crystal panel 5 is set to a horizontally long shape having a length of 20 mm or more and a width of 100 mm or more, specifically, a horizontally long shape having a length L1 of 60 mm and a width L2 of 140 mm. did. As a result, the anti-glare effect can be obtained satisfactorily without making the light shielding pattern 55 unnecessarily large, and the field of view can be secured well.

The liquid crystal panel 5 was attached to the sun visor frame 3 by bonding with an adhesive. As a result, the liquid crystal panel 5 can be easily attached to the sun visor frame 3.
The shaft member 16 that supports the liquid crystal panel 5 and the sun visor frame 3 has a hollow cylindrical shape, and the lead wire 25 of the liquid crystal panel 5 is inserted into the shaft member 16. Thereby, the lead wire 25 is not exposed to the outside, and the appearance can be improved.

The present invention is not limited to the above-described embodiment, and can be modified or expanded as follows.
Although the solar radiation sensor 35 is used for detecting the position of the sun, a GPS (global positioning system) used for a car navigation device may be used. In this case, the control device 13 is configured to have a current date and time program and a solar orbit program, and obtain the position of the sun relative to the own vehicle from the GPS vehicle position, the current date and time, and the solar orbit. Based on the result, the light shielding pattern 55 is formed on the liquid crystal panel 5. Moreover, you may make it use both the solar radiation sensor 35 and GPS.

The solar radiation sensor is not limited to the inner surface of the front window 2, and may be attached to a dashboard, an inner mirror, or the sun visor frame 3 or the liquid crystal panel 5 of the anti-glare device body 1.
The sun visor frame 3 may be formed of, for example, a transparent synthetic resin. In this case, the sun visor frame 3 can be further prevented from obstructing the user's field of view.

The front view of the anti-glare device main body which shows one embodiment of the present invention partially fractured Longitudinal side view along line X1-X1 in FIG. Vertical side view along line X2-X2 in FIG. Front view of transparent film Vertical side view along line X3-X3 in FIG. Cross section of liquid crystal panel A perspective view of the passenger compartment with the front window side viewed from the passenger compartment The solar radiation sensor is shown. (A) is a cross-sectional view of the solar radiation sensor attached to the front window, and (b) is a rear view of the solar radiation sensor. Block diagram showing electrical configuration

Explanation of symbols

  In the drawings, 1 is an anti-glare device body, 2 is a front window, 3 is a frame for a sun visor, 5 is a liquid crystal panel, 6 and 7 are transparent electrodes, 8 is liquid crystal, 9 and 10 are glass, and 13 is a control device (control means) ), 15 is a frame support bracket, 16 is a shaft member, 17 is a ceiling, 19 is a cam plate, 22 is a leaf spring, 25 is a lead wire, 27 is a transparent film, 29 is a clip, 30 is a side window, and 31 is a position. A detection switch (position detection means), 35 is a solar radiation sensor, 45 is a light receiving element, and 55 is a light shielding pattern.

Claims (5)

A sun visor frame having a frame shape provided movably between a use position arranged along the front window and a retracted position retracted from the front window at an upper part of a vehicle on a room side of the front window;
A liquid crystal panel that is fixedly attached in the sun visor frame by joining an outer peripheral part to the inner peripheral part of the sun visor frame, and is movable between the use position and the storage position together with the sun visor frame;
A transparent film provided to cover the liquid crystal panel from the outside together with the frame for the sun visor;
Control means for driving and controlling the liquid crystal panel so as to form a light-shielding pattern of a predetermined size on the liquid crystal panel according to the position of the sun while the liquid crystal panel is located at the use position. An anti-glare device for vehicles characterized by the above. The sun visor frame is provided to be rotatable between a front window side and a side window side with a shaft member as a fulcrum,
Position detecting means for detecting a state in which the liquid crystal panel is rotated to the front window side with the shaft member as a fulcrum and a state in which the liquid crystal panel is rotated to the side window side;
The control means forms the light-shielding pattern on the liquid crystal panel according to the position of the sun in a state where the position detection means detects that the liquid crystal panel is rotated to the front window side, and the position 2. The antiglare device for a vehicle according to claim 1, wherein when the liquid crystal panel is detected to be rotated to the side window side by the detecting means, the entire surface of the liquid crystal panel is in a light shielding state.   The antiglare device for a vehicle according to claim 1 or 2, wherein the light shielding pattern formed on the liquid crystal panel has a horizontally long shape having a length of 20 mm or more and a width of 100 mm or more.   The vehicle antiglare device according to any one of claims 1 to 3, wherein the liquid crystal panel is bonded to the sun visor frame with an adhesive.   The vehicle antiglare device according to claim 2, wherein the shaft member has a hollow cylindrical shape, and the lead wire of the liquid crystal panel is inserted into the shaft member.

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