JP4290960B2 - Anti-glare device for moving objects - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an anti-glare device for a moving body for shielding external light from entering the inside through a viewing window provided on the moving body to prevent a passenger from being dazzled.
[0002]
[Prior art]
A person who drives a moving vehicle such as an automobile or a ship often suffers from dazzling and hinders driving. In order to avoid such direct sunlight, for example, in a car, a sun visor is disposed above the windshield.
[0003]
However, the sun visor is manually lowered when the driver feels dazzling. And when the sun visor is lowered, the field of view above the windshield is blocked and there is a feeling of pressure, so if the driver stops feeling dazzled by changing the direction of travel of the car, the driver immediately I want to return to the position. As a result, for example, when driving a car during a time when the western sun is pointing, there is a problem that the sun visor is frequently raised and lowered, and the driver's attention is lost.
[0004]
In order to solve such a problem, Japanese Patent Application Laid-Open No. H10-228707 detects the solar solar radiation intensity with an optical sensor, detects the incident angle of sunlight from the vehicle tilt angle and calendar / time information, and uses a CCD camera to detect the occupant's When the position of the eyes is detected and it is determined that the direct sunlight from the sun is incident on the occupant's eyes, the portion where the direct light is incident on the transparent liquid crystal panel placed on the windshield is made opaque, automatically An apparatus that shields light is disclosed.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-87060 (FIGS. 1 and 2)
[0006]
[Problems to be solved by the invention]
However, in this prior art, the position of the automobile is not considered in detecting the incident angle of sunlight. That is, even if the position of the orbit of the sun is known from the calendar or time information, the incident angle of sunlight naturally changes depending on where the automobile is located on the earth. For example, FIG. 12 is a polar projection showing the position of the sun on the day of the winter solstice. The altitude of the sun at 12 o'clock is about 42 degrees at 25 degrees north latitude, which is the southern end of Japan, and is the north end. It is about 23 degrees at 45 degrees north latitude, with a difference of nearly 20 degrees. This makes it difficult to obtain an accurate incident angle.
[0007]
The present invention has been made in view of the above circumstances, and an object of the present invention is to detect the incident state of sunlight with higher accuracy and to prevent the incident as necessary. To provide an apparatus.
[0008]
[Means for Solving the Problems]
  In order to achieve the above object, an anti-glare device for a moving body according to claim 1 comprises:Within the moving objectA light-shielding means that is disposed outside the upper end of the viewing window for a person who rides on the moving body to obtain an outer peripheral field of view, and is configured to displace a light-shielding member that shields external light entering through the view window. ,
  Moving body position detecting means for detecting the position of the moving body on the earth;
  Solar position detecting means for detecting the position of the orbit of the sun;
  Received light intensity detecting means for detecting the received light intensity near the viewing window by external light;
  By obtaining the position of the moving body and the position of the orbit of the sun, the position of the sun is between a horizontal line whose lower limit is the standard viewpoint position height of the occupant and the upper end of the viewing window, and When the received light intensity in the vicinity of the viewing window is equal to or greater than a predetermined value, external light incident on a predetermined range including a point passing through the viewing window is a straight line connecting the position of the sun and the standard viewpoint position of the occupant A light shielding control means for controlling the light shielding means so as to be shielded by the light shielding member.Get.
[0009]
With this configuration, even if the positional relationship with the sun changes as the moving body moves in various directions, the standard of the passenger is based on the position of the moving body and the position of the orbit of the sun. Since the relative position of the sun with respect to the viewpoint position can be obtained with high accuracy, the sunlight that is about to enter the eyes of the passenger can be reliably shielded by moving the light shielding member.
[0010]
    in this case,in frontThe light shielding means comprises an arm expansion / contraction mechanism configured to extend and retract the operating arm, and a rotation mechanism that rotates the arm expansion / contraction mechanism,
  Arranging the arm expansion and contraction mechanism and the rotation mechanism inside the main body case,
  The light shielding member is disposed at the tip of the operating arm.And can be accommodated inside the main body caseGood. If comprised in this way, the light-shielding member arrange | positioned at the front-end | tip of an action | operation arm is two-dimensionally within the area | region of a visual field window by synthesize | combining the rotation displacement amount of a rotation mechanism, and the expansion-contraction displacement amount of an arm expansion-contraction mechanism. The light can be shielded by being displaced in polar coordinates.
[0011]
  Claims2As described above, the arm expansion / contraction mechanism includes a screw lead formed on the inner peripheral side of the operating arm, an expansion driving screw disposed inside the operating arm and screwed with the screw lead, It is composed of a telescopic motor that expands and contracts the operating arm by rotating a telescopic drive screw,
  You may comprise the said rotation mechanism with the ring gear in which the said arm expansion-contraction mechanism is mounted, and the motor for rotation which rotates this ring gear.
[0012]
According to this structure, when the expansion / contraction motor rotates the expansion / contraction driving screw, the operating arm is sent out or pulled in by the screw lead on the inner peripheral side according to the rotation direction, so that it is displaced to expand / contract. To do. Further, when the rotation motor rotates the ring gear, the arm expansion / contraction mechanism mounted on the gear rotates together with the ring gear. Therefore, the light shielding member can be displaced in a two-dimensional polar coordinate with a simple configuration.
[0013]
  Claims3As described in the above, the actuating arm is composed of a telescopic pole,
  The arm expansion / contraction mechanism is composed of a rack cable made of a flexible material and attached to one end of the expansion / contraction tip of the operating arm, and an expansion / contraction motor that drives the rack cable via a pinion gear,
  It is preferable that the rotation mechanism includes a ring gear on which the arm expansion / contraction mechanism is mounted and a rotation motor that rotates the ring gear.
[0014]
If comprised in this way, when an expansion-contraction motor rotates, a rack cable will be driven and the expansion-contraction front-end | tip part of the action | operation cable attached to the one end side will be displaced in the expansion | extension direction or a shortening direction. The flexible rack cable can be stored in a state in which, for example, the portion stored on the arm expansion / contraction mechanism side is wound in an arc shape when the operating arm is shortened to the maximum, so that the whole is compact. Can be configured.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
A first embodiment in which the present invention is applied to an automobile as a vehicle (moving body) will be described below with reference to FIGS. FIG. 3 is a functional block diagram showing an electrical configuration of the vehicle antiglare device. The anti-glare device 1 is configured around a control circuit (light-shielding control means) 2 formed of a microcomputer. The control circuit 2 includes a GPS (Global Positioning System, moving body position detecting means) 3, a real time clock (sun position detecting means) 4, a solar orbit position program (solar position detecting means) 5, a light receiving sensor (light receiving intensity detecting means). 6, various data are output from an inclination angle sensor (inclination angle detecting means) 7.
[0025]
As is well known, the GPS 3 receives and calculates GPS signals transmitted from a plurality of GPS satellites orbiting on the satellite orbit via the antenna 3a, thereby calculating the position of the automobile 8 (see FIG. 4) on the earth, That is, latitude, longitude, and altitude coordinate data are output. The real-time clock 4 is an IC having a clock function. When the date and time are set by the user, the time is measured based on the setting, and the current date and time data can be read as required. It has become.
[0026]
The solar orbit position program 5 is software executed by the control circuit 2, and based on the current date and time data obtained from the real-time clock 4, the solar orbit position (solar altitude h, azimuth angle A) is determined. Is to be calculated. The light receiving sensor 6 is constituted by, for example, a photodiode, and detects the intensity of external light such as sunlight incident through the windshield 9 (view window, see FIG. 4) of the automobile 8. The inclination angle sensor 7 detects an inclination angle with respect to the center of gravity of the earth, and outputs inclination angle data with respect to the horizontal as an electric signal.
[0027]
And the control circuit 2 controls the light-shielding device (light-shielding means) 10 as a result of computing based on the various data output from the above components, and shields sunlight. As shown in FIG. 4, the light shielding device 10 is disposed on the driver's seat side (position where the conventional sun visor is disposed) above the windshield 9, and includes a light shielding plate (light shielding member) 11 and the light shielding plate 11. It is comprised with the drive mechanism part 12 which displaces. The light-shielding plate 11 is configured so that, for example, a transparent glass or acrylic resin having a disk shape is used as a base material, and coloring is performed on the base material, thereby reducing light transmittance and enabling light-shielding. Yes.
[0028]
As shown in FIG. 5, the drive mechanism unit 12 is disposed inside the main body case 10 </ b> A of the light shielding device 10, and further includes a rotation mechanism unit 13 and an arm expansion / contraction mechanism unit 14. The rotation mechanism unit 13 includes a rotation motor 15 constituted by a stepping motor, a worm 16 attached to a rotation shaft of the rotation motor 15, a worm wheel 17 that meshes with the worm 16, and a large-diameter ring gear that meshes with the worm wheel 17. 18. The ring gear 18 is provided with an arm expansion / contraction mechanism 14. That is, when the rotation motor 15 rotates, the worm 16 rotates, and the ring gear 18 and the arm expansion / contraction mechanism portion 14 rotate via the worm wheel 17.
[0029]
The arm expansion / contraction mechanism unit 14 is configured to extend / contract the operating arm 19 having the light shielding plate 11 attached to the tip. The operating arm 19 is disposed inside an arm case 20 fixed to the ring gear 18. Although not specifically illustrated, the operating arm 19 is prevented from rotating with respect to the arm case 20 so as not to rotate. The operating arm 19 is hollow, and a screw lead 21 made of a female screw is cut on the inner peripheral surface thereof.
[0030]
On one end side of the drive shaft 22, an expansion / contraction drive screw (male screw) 23 that meshes with the screw lead 21 on the inner periphery of the operating arm 19 is attached, and on the other end side of the drive shaft 22 protruding outside the arm case 20. The gear 24 is attached. And the gear 26 which meshes with the gear 24 is attached to the rotating shaft of the motor 25 for expansion / contraction comprised with a stepping motor. That is, when the expansion / contraction motor 25 rotates, the drive shaft 22 and the expansion / contraction drive screw 23 rotate via the gears 26 and 24. Then, the operating arm 19 is displaced so as to expand and contract in the axial direction.
[0031]
Here, the range in which light shielding is performed by the light shielding device 10 will be described. As shown in FIG. 4A or 6, in the vertical direction with respect to the driver's viewpoint position, between the line L <b> 1 passing through the upper end of the windshield 9 and the horizontal line H around the viewpoint position. (Angle θ1) is a range where light is shielded. Between the horizontal line H and the line L2 passing through the upper end of the hood of the automobile 8 (angle θ2) is a range in which a field of view for driving is always secured without being shielded from light.
[0032]
Further, when taking into account the left-right direction with respect to the position of the driver, as shown in FIG. 4B, when the swing width of the operating arm 19 is θ0, driving is performed with the maximum extension length Rmax of the operating arm 19. The lower limit is the range reaching the user's viewpoint position (horizontal line H), and the upper limit is the range that can be shielded by the minimum extension length Rmin of the operating arm 19. And when not shielding by the light-shielding apparatus 10, the light-shielding plate 11 is accommodated in the inside of main body case 10A. The control circuit 2 may also be arranged inside the main body case 10A by adjusting the arrangement of the rotation mechanism unit 13 as necessary, for example.
[0033]
The light receiving sensor 6 is disposed substantially at the center on the upper end side of the windshield 9. As shown in FIG. 6B, the light receiving sensor 6 is housed in a light shielding case (light shielding wall) 27 having a U-shaped cross section, and its light receiving surface is perpendicular to the line L1. It is pointed forward. Further, when the automobile 8 is on the horizontal, the line passing through the lower end of the light receiving surface and the portion where the upper end side of the light shielding case 27 is in contact with the windshield 9 is substantially vertical, and the upper end of the light receiving surface and the light shielding case A line passing through a portion where the lower end side of 27 is in contact with the windshield 9 forms a depression angle of an angle θ2 with respect to the horizontal. The antenna 3a of the GPS 3 is arranged on the dashboard.
[0034]
FIG. 7 shows an example of output characteristics of the light receiving sensor 6, where the horizontal axis represents the sun position (time) and the vertical axis represents the output intensity of the sensor signal. Needless to say, the relationship between the time and the position of the sun is also an example. For example, if the solar position is at the zenith at time 12 (A), the light receiving sensor 6 can receive sunlight from that point. Until the sun position gradually decreases and reaches position B (that is, a position that coincides with angle θ1 of line L1) (16:00), the output intensity of light receiving sensor 6 sequentially increases. That is, between the position A and the position B, the light shielding case 27 blocks a part of sunlight that is about to enter the light receiving sensor 6 from above, and when the light reaches the position B, the sunlight is received by the light receiving sensor 6. This is because the light enters perpendicularly to the light receiving surface.
[0035]
Then, the output intensity of the light receiving sensor 6 sequentially decreases until the sun reaches a position D that is blocked by the lower end side of the light shielding case 27 via a position C that is substantially horizontal from the position B (18:00). Between position C and position D is approximately dusk, and the sun is low and the light is so weak that there is no need to block light. Therefore, when the sun is from position B to position C, light is shielded by the light shielding device 10.
[0036]
Next, the operation of this embodiment will be described with reference to FIGS. FIG. 1 is a flowchart showing the contents of control by the control circuit 2. First, when the control circuit 2 acquires the current position data of the vehicle 8 and the traveling direction data of the vehicle 8 by the GPS 3 (step S1), the control circuit 2 acquires calendar and current time data from the real-time clock 4 (step S2). Based on these data, the solar orbit position program 5 is activated to calculate the solar orbit position (solar altitude h, azimuth angle A) (step S3).
[0037]
FIG. 2 shows a flowchart of the solar orbit position program 5. First, true solar time ST is calculated by the equation (1) (step P1).
ST = current time + (longitude−135 degrees) / 15 degrees + equal time difference (1)
The equality difference is obtained from a table or an approximate calculation formula based on the calendar data.
[0038]
Next, true solar time ST is converted into a time angle t by equation (2) (step P2).
t = (ST−current time) × 15 (2)
Then, the solar altitude h is calculated by equation (3) (step P3).
h = sin^-1(Sinφsinδ + cosφcosδcost) (3)
Where φ is the latitude and δ is the declination of the sun. Declination δ is determined from calendar data. The solar altitude h is an angle formed by the orbital position of the sun and the horizontal plane.
[0039]
Then, the azimuth angle A is calculated by equation (4) (step P4).
A = sin^-1(Cosδ · sint · shh) (4)
The azimuth A is an angle formed by the meridian of the observation point (in this case, the standard fulcrum position) and the circle passing through the sun position, the zenith and the nadir, and true south is 0 degree.
[0040]
Reference is again made to FIG. When the orbital position of the sun is calculated as described above, the control circuit 2 reads out the standard viewpoint position of the driver from the internal ROM (step S4), and obtains a linear expression that connects the solar position and the standard viewpoint position. Calculation is performed (step S5). Subsequently, when data on the angle at which the automobile 8 is tilted with respect to the horizontal is obtained from the tilt angle sensor 7 (step S6), the linear equation obtained in step S5 is corrected in consideration of the tilt angle data (step S7). ).
[0041]
Here, the reason why the linear equation is corrected in accordance with the inclination angle is that, as shown in FIG. 8, when the automobile 8 is inclined with respect to the horizontal, the sun position is shifted. Is inclined by the inclination angle θ3, and if it is inclined in the depression direction, the inclination angle is added. In FIG. 8, the tilted state should be illustrated with the driver's viewpoint position as the center of rotation, but the tilted viewpoint position is shifted for convenience.
[0042]
Next, the control circuit 2 determines whether or not the corrected straight line passes through the light shielding range of the windshield 9 (step S8). That is, it is determined whether or not the sun position is within the range of (BC) shown in FIG. If the straight line does not pass the light shielding ("NO"), the process returns to step S1, and if it passes ("YES"), the process proceeds to step S9.
[0043]
In step S9, the control circuit 2 determines whether or not the received light intensity obtained from the light receiving sensor 6 is equal to or higher than the level X shown in FIG. That is, even if the sun is located on the transparent liquid crystal panel 11, it is not necessary to block light depending on weather conditions. For example, if the received light intensity is less than level X due to rain or cloudy weather ("NO"), the process returns to step S1, and if it is clear and above level X ("YES"), the process proceeds to step S10.
[0044]
In step S10, when the control circuit 2 obtains the position coordinates where the sunlight is incident on the windshield 9 toward the standard viewpoint position from the intersection of the plane of the windshield 9 and the linear equation, the control circuit 2 is centered on the position coordinates. Shading the area. For example, as shown in FIG. 5, two-dimensional coordinates are set with the rotation center of the ring gear 18 as the origin, the horizontal direction as the X axis, and the vertical direction as the Y axis, and the light shielding center coordinates are set to (x, y). Then, assuming that the rotation amount of the operating arm 19 with respect to the X axis is θ and the length of the operating arm 19 from the origin is R, the coordinates (x, y) are as follows.
(X, y) = (R cos θ, R sin θ) (5)
Accordingly, by solving the simultaneous equations obtained from the equation (5), the rotation amount θ and the extension length R of the operating arm 19 can be obtained.
[0045]
Then, the control circuit 2 outputs a command to rotate the rotation motor 15 and the expansion / contraction motor 25 as a pulse signal so as to displace the light shielding plate 11 according to the obtained rotation amount θ and extension length R. Then, these motors 15 and 25 rotate according to the given pulse signal, thereby rotating and displacing the operating arm 19 by the rotation amount θ and extending it by the extension length R. Then, the process returns to step S1.
[0046]
As described above, according to the present embodiment, the control circuit 2 obtains the position of the automobile 8 and the position of the orbit of the sun, so that the position of the sun is a horizontal line whose lower limit is the standard viewpoint position height of the driver. And the upper end of the windshield 9 and the light reception intensity near the windshield 9 is equal to or greater than a predetermined value, a point where the straight line connecting the sun position and the standard viewpoint position passes through the windshield 9 The light shielding device 10 is controlled so as to shield external light incident on a predetermined range.
[0047]
With such a configuration, even when the positional relationship with the sun changes as the automobile 8 moves in various directions, the standard of the passenger is based on the position of the automobile 8 and the position of the orbit of the sun at that time. Since the relative position of the sun with respect to the viewpoint position can be obtained with high accuracy, the light shielding plate 11 of the light shielding device 10 can be displaced to more reliably shield sunlight that is directly incident on the driver's eyes than before. .
[0048]
The light shielding device 10 includes an arm expansion / contraction mechanism unit 14 configured to extend and contract the operating arm 19 and a rotation mechanism unit 13 that rotates the arm expansion / contraction mechanism unit 14. 11 is disposed at the distal end of the operating arm 19, and thus the light shielding disposed at the distal end of the operating arm 19 is performed by combining the rotational displacement amount of the rotational mechanism portion 13 and the expansion / contraction displacement amount of the arm expansion / contraction mechanism portion 14. The plate 11 can be displaced in a two-dimensional polar coordinate within the region of the windshield 9 to achieve light shielding.
[0049]
Further, the arm expansion / contraction mechanism portion 14 includes a screw lead 21 formed on the inner peripheral side of the operating arm 19, an expansion / contraction driving screw 23 disposed on the inner peripheral side of the operating arm 19 and meshing with the screw lead 21, and this expansion / contraction. The rotating motor unit 15 is configured to expand and contract the moving arm 19 by rotating the driving screw 23. The rotating mechanism unit 13 includes the ring gear 18 on which the arm expanding and contracting mechanism unit 14 is mounted, and the ring gear 18 is rotated. It was comprised with the motor 15 for rotation. Therefore, the light shielding plate 11 can be displaced in a polar coordinate with a simple configuration.
[0050]
In addition, the light receiving sensor 6 is disposed at the substantially center in the left-right direction of the windshield 9 and on the upper end side, and is provided with a light shielding case 27 for blocking light that is mainly incident from the vertical direction. It is possible to avoid receiving detection unnecessary light that is not directly incident on the eye and to adjust the light reception level.
[0051]
Furthermore, an inclination angle sensor 7 for detecting the angle at which the automobile 8 is inclined with respect to the horizontal is provided, and the control circuit 2 takes into account the detected inclination angle and the position of the sun and the standard viewpoint position of the passenger Since the angle formed by the straight line connecting the two is corrected, the control accuracy can be improved.
[0052]
In addition, when the light shielding plate 11 does not shield the external light, the control circuit 2 accommodates the light shielding plate 11 inside the main body case 10A and positions it outside the windshield 9. Therefore, there is no need for light shielding. Further, it is possible to prevent the light shielding plate 11 from entering the driver's field of view.
[0053]
(Second embodiment)
FIG. 9 shows a second embodiment of the present invention. The same parts as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted. Only different parts will be described below. In the light shielding device (light shielding means) 30 of the second embodiment, the rotation mechanism portion 13 is the same as that of the first embodiment, but the configuration of the arm expansion / contraction mechanism portion 31 is different.
[0054]
The arm extending / contracting mechanism 31 basically extends and contracts the operating arm 32 having the light shielding plate 11 attached to the tip, similarly to the arm extending / contracting mechanism 14, and the operating arm 32 is configured by an extendable pole. The operating arm 32 in the contracted state is accommodated in an arm case 34 fixed to the ring gear 33.
[0055]
The ring gear 33 is mounted with a telescopic motor 35, a worm 36 attached to the rotation shaft of the telescopic motor 35, a worm wheel 37 that meshes with the worm 36, a pinion gear 38 that meshes with the worm wheel 37, and the like. The pinion gear 38 meshes with the rack cable 39.
[0056]
The rack cable 39 is made of a flexible material such as polyacetal resin or nylon resin, and one end of the rack cable 39 is fixed to the extensible tip of the operating arm 32. A step portion 33 a is formed on the inner peripheral side of the ring gear 33, and a portion in which the rack cable 39 is accommodated in the main body case 30 </ b> A of the light shielding device 30 is circular in a form that sticks along the step portion 33 a. It is designed to be wound up. In addition, after the rack cable 39 is engaged with the pinion gear 38, a cable pressing roller 40 is disposed in a portion that is sent out to the operation arm 32 side. Other configurations are the same as those of the first embodiment.
[0057]
Next, the operation of the second embodiment will be described. When the expansion / contraction motor 35 of the arm expansion / contraction mechanism 31 in the light shielding device 30 is rotated, the pinion gear 38 is rotated through the worm 36 and the worm wheel 37, and the rack cable 39 is sent out to the operating arm 32 side or to the main body case 30A side. Since it operates so as to be retracted, the operating arm 32 expands and contracts.
[0058]
According to the second embodiment configured as described above, the operating arm 32 is formed of an extendable pole, the arm extendable mechanism 31 is driven by the rack cable 39 and the rack cable via the pinion gear 38. And 35. Since the rack cable 39 can wind the portion housed on the arm expansion / contraction mechanism 31 side to the inner peripheral side of the ring gear 33 when the operating arm 32 is shortened to the maximum, the storage space is as much as possible. It becomes possible to make it small, and the whole can be comprised compactly.
[0059]
(Third embodiment)
FIG. 10 shows a third embodiment of the present invention. The same parts as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted. Only different parts will be described below. In the light shielding device (light shielding means) 41 of the third embodiment, the configuration of the arm expansion / contraction mechanism section 42 is substantially the same as that of the arm expansion / contraction mechanism section 14 in the first embodiment. The mechanism part 43 is arrange | positioned.
[0060]
A support frame 44 assembled in a horizontally long rectangular shape is fixed to the main body case 41 </ b> A, and a ball screw (male screw) 45 is rotatably supported in the longitudinal direction of the support frame 44. The left end side of the ball screw 45 penetrates the support frame 44, and a rotating gear 46 is attached to the penetrated portion. A gear 48 that meshes with the gear 46 is attached to the rotating shaft of the horizontal movement motor 47. The horizontal moving member (moving screw portion) 49 has a substantially cubic outer shape, and is screwed with a ball screw 45 penetrating the side surface in the left-right direction in FIG. 10 by a female screw formed on the inner peripheral side. The above constitutes the horizontal movement mechanism unit 43.
[0061]
The arm expansion / contraction mechanism part 42 is configured to extend / contract the operating arm 19 having the light shielding plate 11 attached to the tip, similarly to the arm expansion / contraction mechanism part 14. However, the arm case 20 is attached and fixed to the horizontal moving member 49 so as to be orthogonal to the ball screw 45, and the telescopic motor 25 is attached and fixed to the arm case 20. Further, engaging claws 20 a and 20 b are disposed at the upper end and lower end of the arm case 20, and the engaging claws 20 a and 20 b are engaged with the guide portions 44 a and 44 b of the support frame 44 so as to be horizontal. It is designed to be guided when it is displaced.
[0062]
Next, the operation of the third embodiment will be described. The action of the arm expansion / contraction mechanism 42 is exactly the same as that of the arm expansion / contraction mechanism 14. The arm expansion / contraction mechanism unit 42 is driven by the horizontal movement mechanism unit 43 so as to be displaced in the horizontal direction. That is, when the horizontal movement motor 47 is rotated, the gears 48 and 46 are rotated so that the ball screw 45 is rotated. Then, the horizontal moving member 49 is displaced in the horizontal direction.
[0063]
That is, since the horizontal movement mechanism unit 43 displaces the arm expansion / contraction mechanism unit 42 in the horizontal direction and the arm expansion / contraction mechanism unit 42 displaces the light shielding plate 11 in the vertical direction, the light shielding plate 11 is two-dimensionally orthogonally coordinated by combining them. Can be displaced. As shown in FIG. 10, the movement range of the light shielding plate 11 is as follows. When the operating arm 19 is contracted most (coordinate points a and b) and when the operating arm 19 is extended most (coordinate points c and d), the horizontal moving member 49 is moved. This is a combination of the case of moving to the left end side (coordinate points a and c) and the case of moving to the right end side (coordinate points b and d). Further, the fixed position when light is not shielded by the light shielding plate 11 is the coordinate point b. In step S10 of FIG. 1, the control circuit 2 determines the displacement amounts by the horizontal movement mechanism unit 43 and the arm extension / contraction mechanism unit 42 according to the light shielding center coordinates (x, y).
[0064]
As described above, according to the third embodiment, the light shielding device 41 is configured by the arm extension / contraction mechanism portion 42 and the horizontal movement mechanism portion 43. Then, the horizontal movement mechanism 43 is configured so as to be horizontally movable by being screwed to the ball screw 45 stretched in the horizontal direction and to the ball screw 45, and to which the arm expansion / contraction mechanism 42 is attached. And a horizontal movement motor 47 for rotating the ball screw 45. Therefore, the light shielding plate 11 attached to the tip of the operating arm 19 can be displaced two-dimensionally, and sunlight can be shielded by moving the light shielding plate 11.
[0065]
(Fourth embodiment)
FIG. 11 shows a fourth embodiment of the present invention. In the fourth embodiment, the light shielding plate (light shielding member) 50 is constituted by two polarizing plates 51 and 52. That is, as shown in FIG. 11, two polarizing plates 51 and 52 in a disk shape are sandwiched between frames 53 and 54, and the polarizing plate 51 is fixed so as not to move. The other polarizing plate 52 is not fixed and is movable in the circumferential direction.
[0066]
The polarizing plate 52 is provided with a protrusion 52a, and notches 53a and 54a for moving the protrusion 52a in the circumferential direction are formed on the frames 53 and 54 side. A plurality of parallel lines illustrated in the polarizing plates 51 and 52 indicate the respective polarization directions. The driver can adjust the amount of polarization direction difference between the polarizing plates 51 and 52 by moving the protrusion 52a of the polarizing plate 52 in the vertical direction in FIG. 11 outside the frames 53 and 54. It has become.
[0067]
That is, by rotating the polarizing plate 52, the light transmittance is maximized when the polarization direction coincides with the polarizing plate 51, and when the change directions of the two are orthogonal, the transmittance is minimized. It becomes. Therefore, according to the fourth embodiment configured as described above, the driver can adjust the transmittance of the light shielding plate 50.
[0068]
The present invention is not limited to the embodiments described above and shown in the drawings, and the following modifications or expansions are possible.
The traveling direction data of the automobile 8 is not necessarily required, and it may be determined whether or not the light shielding is performed only by the light receiving sensor 6. Further, the traveling azimuth may be determined on the control circuit 2 side based on the trajectory where the coordinate data changes.
In the third embodiment, the horizontal movement mechanism may be configured using a linear motor.
In the fourth embodiment, the polarizing plate 52 may also be fixed to make the transmittance constant.
[0069]
The tilt angle sensor 7 may be provided as necessary.
The same control may be applied not only to the driver but also to the viewpoint position of the passenger in the passenger seat.
When the light is not shielded, the fixed position of the light shielding member does not necessarily have to be outside the viewing window.
The moving body is not limited to an automobile, and may be applied to other train vehicles, ships, and the like.
[0070]
【The invention's effect】
According to the antiglare device for a moving body according to claim 1, the shading control means obtains the position of the moving body and the position of the orbit of the sun, so that the position of the sun sets the standard viewpoint position height of the passenger. When the light receiving intensity in the vicinity of the viewing window is greater than or equal to a predetermined value between the lower horizontal line and the upper end of the viewing window, a straight line connecting the sun position and the standard viewpoint position of the passenger is the viewing window. The light shielding member is moved by controlling the light shielding means so as to shield external light incident on a predetermined range including a point passing through the light. Therefore, even if the position of the moving object changes in various directions, the relative position of the sun relative to the standard viewpoint position of the passenger based on the position of the moving object and the position of the orbit of the sun. Since the position can be obtained with high accuracy, it is possible to more reliably shield sunlight that is going to be directly incident on the eyes of the occupant than before.
[0071]
  AndThe light shielding means comprises an arm expansion / contraction mechanism and a rotation mechanism for rotating the arm expansion / contraction mechanism,Arranging these arm expansion and contraction mechanisms and rotation mechanism inside the main body case,A light-shielding member is placed at the tip of the operating armAnd can be stored inside the body caseTherefore, by combining the rotation displacement amount of the rotation mechanism and the expansion / contraction displacement amount of the arm expansion / contraction mechanism, the light shielding member disposed at the tip of the operating arm is displaced in a two-dimensional polar coordinate within the field of view window. Thus, light shielding can be achieved.
[0072]
  Claim2According to the described anti-glare device for a moving body, the arm expansion / contraction mechanism includes a screw lead formed on the inner peripheral side of the operating arm, an expansion driving screw that engages with the screw lead inside the operating arm, and the expansion / contraction It is composed of an expansion / contraction motor that rotates the drive screw to expand and contract the operating arm, and the rotation mechanism is composed of a ring gear on which the arm expansion / contraction mechanism is mounted and a rotation motor that rotates the ring gear. Depending on the configuration, the light shielding member can be displaced in a two-dimensional polar coordinate.
[0073]
  Claim3According to the described anti-glare device for a moving body, the operating arm is composed of an extendable pole, the arm extending / contracting mechanism is provided with a rack cable to which the extendable tip of the operating arm is attached to one end side, and the rack cable via the pinion gear. Since it is composed of an expansion / contraction motor to be driven, and the rotation mechanism is composed of a ring gear on which the arm expansion / contraction mechanism is mounted and a rotation motor for rotating the ring gear, the entire structure can be made compact.
[Brief description of the drawings]
FIG. 1 is a flowchart showing a control content of a control circuit of an anti-glare device according to a first embodiment when the present invention is applied to an automobile.
FIG. 2 is a flowchart of the solar orbit position program.
FIG. 3 is a functional block diagram showing an electrical configuration of the vehicle anti-glare device.
4A is a longitudinal side view showing a front portion of an automobile, and FIG. 4B is a front view of the front portion.
FIG. 5 is a diagram showing a configuration of a light shielding device
6A is a longitudinal side view of an automobile, and FIG. 6B is an enlarged view of a part of FIG.
FIG. 7 is a diagram illustrating an example of output characteristics of a light receiving sensor.
FIG. 8 is a diagram showing a state in which the automobile is inclined with respect to the horizontal.
FIG. 9 is a view corresponding to FIG. 5 showing a second embodiment of the present invention.
FIG. 10 is a view corresponding to FIG. 5 showing a third embodiment of the present invention.
FIG. 11 is an exploded perspective view showing a configuration of a light shielding plate according to a fourth embodiment of the present invention.
FIG. 12 is a polar projection showing the position of the sun on the day of the winter solstice.
[Explanation of symbols]
1 is an anti-glare device (anti-glare device for moving body), 2 is a control circuit (light shielding control means), 3 is GPS (position detection means), 4 is a real time clock (sun position detection means), and 5 is a solar orbit position program. (Solar position detecting means), 6 is a light receiving sensor (light receiving intensity detecting means), 7 is a tilt angle sensor (tilt angle detecting means), 8 is an automobile (moving body), 9 is a windshield (view window), and 10 is light shielded. Device (light-shielding means), 11 is a light-shielding plate (light-shielding member), 12 is a drive mechanism section, 13 is a rotation mechanism section, 14 is an arm telescopic mechanism section, 15 is a motor for rotation, 18 is a ring gear, 19 is an operating arm, 21 is a screw lead, 23 is a telescopic drive screw, 25 is a telescopic motor, 30 is a light shielding device (light shielding means), 31 is an arm telescopic mechanism, 32 is an operating arm, 35 is a telescopic motor, 38 is a pinion gear, 39 Is rack case , 41 is a light-shielding device (light-shielding means), 42 is an arm expansion / contraction mechanism, 43 is a horizontal movement mechanism, 45 is a ball screw, 47 is a horizontal movement motor, 49 is a horizontal movement member (movement screw), and 50 is Light shielding plates (light shielding members) 51 and 52 indicate polarizing plates 51 and 52.

Claims (3)

Inside the moving body, a person who rides on the moving body is arranged outside the upper end of the viewing window for obtaining the outer field of view, and the light blocking member that blocks the external light entering through the viewing window is configured to be displaceable. Light shielding means,
Moving body position detecting means for detecting the position of the moving body on the earth;
Solar position detecting means for detecting the position of the orbit of the sun;
Received light intensity detecting means for detecting the received light intensity near the viewing window by external light;
By obtaining the position of the moving body and the position of the orbit of the sun, the position of the sun is between a horizontal line whose lower limit is the standard viewpoint position height of the occupant and the upper end of the viewing window, and When the received light intensity in the vicinity of the viewing window is equal to or greater than a predetermined value, external light incident on a predetermined range including a point passing through the viewing window is a straight line connecting the position of the sun and the standard viewpoint position of the passenger A light shielding control means for controlling the light shielding means so as to be shielded by the light shielding member ,
The light shielding means includes an arm expansion / contraction mechanism configured to extend and contract the operating arm, and a rotation mechanism that rotates the arm expansion / contraction mechanism.
The arm extension / contraction mechanism and the rotation mechanism are arranged inside a main body case,
The light blocking member, the is disposed at the distal end of the operating arm, moving body antiglare device, characterized in that said are configured to accommodate the interior of the main body case. The arm expansion / contraction mechanism includes a screw lead formed on the inner peripheral side of the operation arm, an expansion / contraction drive screw that is disposed inside the operation arm and is screwed with the screw lead, and rotates the expansion / contraction drive screw. It is composed of an expansion / contraction motor that expands / contracts the operating arm.
The rotating mechanism includes a ring gear, wherein the arm extension mechanism is mounted, movable body antiglare device according to claim 1, wherein Rukoto is composed of a rotary motor for rotating the ring gear. The operating arm is composed of a telescopic pole,
The arm expansion / contraction mechanism is composed of a flexible material, and is composed of a rack cable in which the expansion / contraction tip of the operating arm is attached to one end side, and an expansion / contraction motor that drives the rack cable via a pinion gear. ,
The rotating mechanism includes a ring gear, wherein the arm extension mechanism is mounted, movable body antiglare device according to claim 1, characterized in that it is constituted by a rotating motor for rotating the ring gear.

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