JP2008239009A - Vehicular light shielding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular shielding device ready for sudden incidence of solar beams on the eyes of an occupant attributable to right/left turn or a curve when a vehicle is traveling. <P>SOLUTION: The vehicular shielding device comprises a navigation 3 for detecting the position and the advancing direction of a vehicle 2, the present date and time, an incident direction computing device 5 for computing the incident direction of the solar beam with respect to the position of an occupant based on the data from the navigation 3, and control devices 13a, 13b for controlling sun visors 9a, 9b of the vehicle 2 based on the data from the incident direction computing device 5. When the vehicle 2 travels, the sun visors 9a, 9b are automatically moved to the position at which incidence of the direct beam can be prevented from being incident on eyes of an occupant in the right-to-left direction of an upper part of a windshield glass 8 or above side glasses 10a, 10b by control means 13a, 13b based on the signal from the incident direction computing device 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a light-shielding device for a vehicle including a sun visor that is automatically controlled.

As a prior art related to the present invention, there is a vehicle sun visor device that operates so as to automatically block incident light having a predetermined intensity or more into a vehicle interior, for example, direct sunlight. Incident light having a level corresponding to the incident angles of the upper, lower, left, and right incident light incident on a predetermined angle range ahead of a predetermined seat of the vehicle. One light receiving sensor that outputs a detection signal from each corresponding light receiving element and the predetermined angle range are divided into a plurality of light shielding ranges, and are provided corresponding to each light shielding range and before entering the light shielding range. A light-shielding device that operates a light-shielding means for shielding incident light, and the light-shielding device corresponding to the light-shielding range when the incident light enters the light-shielding range based on an incident light detection signal from the light-receiving sensor To control the incident light to be blocked. (For example, Patent Document 1)
There is also a light-shielding control device that can protect a vehicle occupant's target site from sunlight. An inclination angle acquisition unit for acquiring an inclination angle of a vehicle, and for controlling a shield installed in the vehicle in order to protect a predetermined target portion from sunlight in a vehicle occupant Acquired in the traveling direction acquisition unit that acquires the direction, the time acquisition unit that acquires the current time information, the inclination angle acquired in the inclination angle acquisition unit, the traveling direction acquired in the traveling direction acquisition unit, and the time acquisition unit A solar position deriving unit for deriving the position of the sun with respect to the vehicle, a part position obtaining unit for obtaining the position of the target part, and the sun position and part position obtaining derived by the solar position deriving unit And a control signal generation unit that generates a control signal for controlling the shield based on the position of the target part acquired by the unit. With this configuration, the vehicle occupant's target site is protected from sunlight by calculating the position of the sun when it is located on an inclined surface or considering the inclination of the vehicle in the roll direction and the pitch direction. (For example, Patent Document 2)
In addition, there is a vehicle sun visor that always accurately detects the incident direction of sunlight with respect to an eye point of a vehicle occupant and appropriately controls the light shielding operation. A solar radiation sensor that detects direct sunlight, an azimuth detecting means that detects the traveling direction of the vehicle, a clock means that detects the current date and time, and the eye point of the occupant by the traveling direction and the date and time The incident direction calculating means for calculating the incident direction of sunlight and the adjusting means for controlling the operation of the sun visor, wherein the solar radiation sensor detects direct sunlight, and the incident direction calculated by the incident direction calculating means When the sunlight is directed to the eye point through the window glass of the vehicle, the sun visor is operated under the control of the adjusting means to block the sunlight with respect to the eye point. (For example, Patent Document 3)
JP 2005-162177 A Japanese Patent Laid-Open No. 2005-8058 Japanese Patent Laid-Open No. 10-16555

  However, in the conventional technology, although the sun visor is controlled according to the position of the sun, it is not possible to prevent the field of view from being obstructed by the sudden incidence of sunlight on the eyes of the occupant when turning right or left while driving in a vehicle or due to a curve There's a problem.

  The present invention has been made in view of the above-mentioned problems, and provides a vehicle shading device that can cope with the sudden incidence of sunlight on the eyes of an occupant caused by a right or left turn or a curve while the vehicle is running. Objective.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a travel direction detection means for detecting a position and a travel direction of a vehicle, a time means for detecting the current date and time, and the travel direction detection means. Incident direction calculating means for calculating the incident direction of sunlight with respect to the position of the occupant based on the time means, and control means for controlling the vehicle sun visor based on data from the incident direction calculating means. In the vehicle shading device, when the vehicle is traveling, the sun visor makes direct light incident on the occupant's eyes in the left-right direction on the upper part of the windshield or on the upper part of the side glass based on the signal from the incident direction calculating means. It automatically moves to a position that prevents it.

  According to a second aspect of the present invention, the sun visor moves a guide rail provided on the roof of the vehicle.

  According to a third aspect of the present invention, there is provided a first polarizing film provided on an upper part of a windshield or side glass of the vehicle, a second polarizing film constituting the sun visor, the first polarizing film, and the second The polarizing films are shielded from light by overlapping.

  In the first aspect of the invention, the sun visor automatically moves to a position that prevents direct light from being incident on the driver's field of view by a signal from the incident direction calculation device. It is possible to prevent the field of view from being obstructed by the incidence of sunlight on the eyes of the occupant in the sudden change.

  Further, in the invention described in claim 2, since the sun visor can be moved to the left and right by the guide rail provided on the roof, the sun visor is applied to the occupant's eyes from the side of the vehicle when turning right or left of the vehicle or due to a curve. It becomes possible to wait and follow the incident.

  Further, in the invention according to claim 3, the sun visor moves because the first polarizing film provided on the windshield upper part or the side glass upper part of the vehicle and the second polarizing film constituting the sun visor are shielded from light. The visual burden on the driver at the time is small, and there is less discomfort to the driver than when the sun visor does not penetrate.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a conceptual diagram of a vehicular shading device 1 according to a first embodiment of the present invention, as viewed from the eyes of an occupant driving a vehicle 2. A navigation system 3 (traveling direction detecting means, time means) is provided near the center of the vehicle 2 to detect the position and progress report of the vehicle 2 by signals from GPS or the like. And know the time.

  An incident direction computing device 5 (incident direction computing means) is installed inside the dashboard 4 of the vehicle 2. The incident direction calculation device 5 is a distance measurement provided on the upper part of the steering column 16 in the vehicle 2 for detecting the position, traveling direction, current date and time data from the navigation system 3, and the position of the occupant. The occupant position is detected by the sensor 17, and the incident direction of sunlight on the occupant's eyes estimated from the occupant position is calculated.

  Two sun visors 9a and 9b are provided on the windshield 8. The sun visor 9 a moves in the left-right direction along the guide rail 12 provided on the roof 11 on the left side of the upper portion of the windshield 8 and the upper portion of the side glass 10 a. The sun visor 9b moves in the left-right direction along the guide rail 12 provided on the roof 11 of the vehicle 2 on the right side of the upper portion of the windshield 8 and the upper portion of the side glass 10b.

  The sun visors 9a and 9b are provided with control devices 13a and 13b (control means) for receiving the signals from the incident direction calculation device 5 and controlling the sun visors 9a and 9b. Motors (not shown) are attached to the control devices 13a and 13b, and the sun visors 9a and 9b can travel on the guide rail 12 by themselves.

  An illuminance sensor 15 is provided at the position (back) of the room mirror 14 to detect the incidence of sunlight in the vehicle 2.

  Alternatively, it receives data from the compound-eye cameras 7a and 7b provided in the vicinity of the left and right front pillars 6a and 6b of the vehicle 2, and detects the incidence of sunlight and also the incidence of strong reflected sunlight. .

  The operation of the vehicle shading device 1 will be described.

  When the occupant drives the vehicle 2, the data of the position, traveling direction, current date and time of the vehicle 2 from the navigation system 3, and the occupant's eyes from the distance measuring sensor 17 provided at the upper part of the steering column 16. The position data is sent to the incident direction calculation device 5, respectively. The incident direction calculation device 5 calculates the incident direction of sunlight based on data from the navigation system 3 and the distance measuring sensor 17 provided on the steering column 16. The calculation results are sent to the control devices 13a and 13b of the sun visors 9a and 9b, and the sun visors 9a and 9b automatically move to positions that prevent direct light from entering the eyes of the passenger.

  In FIG. 1, the sun visor 9a moves to the position (position A) of the line connecting the position of the passenger's eyes and the sun. When the vehicle 2 is a right curve, the incident direction of sunlight moves from the A position to the B position. In accordance with this movement, the sun visor 9a also moves to the B position along the guide rail 5.

  In the first embodiment of the present invention, since the sun visors 9a and 9b automatically move according to the incident direction of sunlight and stand by / follow, even if the position of the sunlight moves left and right by a curve or the like, It is possible to prevent the field of view from being obstructed by the incidence of sunlight on the eyes of an occupant with a steep view.

  FIG. 2 is a conceptual diagram of the vehicle shading device 20 according to the second embodiment of the present invention, as seen from the eyes of a passenger driving the vehicle 2. The same reference numerals as those in the first embodiment denote the same or corresponding components, and detailed description thereof will be omitted, and differences will mainly be described.

  The vehicle shading device 20 includes sun visors 23 a and 23 b including a first polarizing film 21 and a second polarizing film 22 on the windshield 8 or the side glasses 10 a and 10 b on the vehicle 2. Other configurations are the same as those of the first embodiment.

  Although the 1st polarizing film 21 and the 2nd polarizing film 22 have translucency, when the 1st polarizing film 21 and the 2nd polarizing film 22 overlap, there exists a light-shielding effect. In the second embodiment, direct light is prevented from entering the eyes of the occupant by using a light shielding effect caused by the overlapping of the first polarizing film 21 and the second polarizing film 22. The operation of the vehicle shading device 20 is the same as that of the vehicle shading device 1 of the first embodiment.

  In the vehicle shading device 20, since the sun visors 23a and 23b are transparent, the visual burden on the driver can be reduced when the windshield 8 upper part and the side glass 10a and 10b upper part are moved along the guide rail 5. There is little discomfort.

  In the first and second embodiments of the present invention, two sun visors are provided, but one or three or more sun visors may be provided.

  Further, a tilt angle acquisition sensor that detects the tilt angle of the vehicle 2 may be provided, and data may be sent to the incident direction calculation device to control the rotation angle of the sun visors 9a, 9b, 23a, and 23b. In that case, more advanced light shielding control of the vehicle becomes possible.

  Moreover, you may comprise combining the at least 2 or more of an azimuth | direction sensor, solar position data, a camera, and an illumination intensity sensor for the detection of a solar position. In that case, since the position of the sun can be known more accurately, the accuracy of the light shielding control is improved. Further, by using a camera that can be stereoscopically viewed at a wide angle, it is possible to improve the detection accuracy of reflected light, artificial light, or the sun position in cloudy weather. At the same time, the operating sun visor can be made smaller, and it can be stored in the rear of the rearview mirror and in the front pillar when used in the daytime.

  Further, even against strong reflected light and artificial light other than direct light, simultaneous shading can be performed by using a plurality of sun visors.

  Further, by using a plurality of sun visors, it is possible to shield a plurality of passengers.

It is a conceptual diagram of the vehicle light-shielding device of 1st Example of this invention. It is a conceptual diagram of the vehicle light-shielding device of 2nd Example of this invention.

Explanation of symbols

1 Vehicle shading device (first embodiment)
2 Vehicle 3 Navigation system (travel direction detection means, time means)
5. Incident direction calculation device (incident direction calculation means)
9a, 9b Sun visor 12 Guide rail 13a, 13b Control device (control means)
17 Ranging sensor 20 Vehicle shading device (second embodiment)
21 1st polarizing film 22 2nd polarizing film 23a, 23b Sun visor

Claims (3)

Traveling direction detection means for detecting the position and traveling direction of the vehicle;
A time means for detecting the current date and time;
Based on the traveling direction detection means and the time means, incident direction calculation means for calculating the incident direction of sunlight with respect to the position of the occupant;
In a vehicle shading device comprising: control means for controlling a vehicle sun visor based on data from the incident direction calculation means;
When the vehicle is running, the sun visor is positioned so as to prevent direct light from entering the eyes of the occupant on the left or right direction of the upper windshield or on the upper side of the windshield by the control means based on the signal from the incident direction calculating means. A vehicle shading device characterized by being automatically moved. 2. The vehicle shading device according to claim 1, wherein the sun visor moves a guide rail provided on a roof of the vehicle. A first polarizing film provided on the windshield upper part or side glass upper part of the vehicle;
A second polarizing film constituting the sun visor;
The vehicle light-shielding device according to claim 1, wherein the first polarizing film and the second polarizing film are shielded by being overlapped with each other.

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