JP2000028723A - Information provision system and computerized light reflecting body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information provision system which does not consume electric power wastefully and which supports the movement of a pedestrian. SOLUTION: A personal navigator 8 which is used to project and receive light; and a corner cube 4 which is buried in a ceiling 16 situated on a passage 12 inside an institution such as a hospital or the like, in which a plurality of films are pasted on its reflecting faces and which reflects computerized light; compose a personal navigation system 2. A user 14 who is moved in an advancing direction 10 on the passage 12 carries the personal navigator 8. A laser beam is projected from the personal navigator 8 to the upper direction (the direction of an arrow 6). The personal navigator 8 receives light in a direction (the direction of an arrow 7) opposite to the projecting direction (the direction of the arrow 6) out of reflected light by a reflecting body. The personal navigator 8 outputs present-position information, stored in itself, according to the deflecting direction of the received light.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information providing system and an information light reflector, and more particularly, to an information providing system for providing information according to encoded light and an information system for reflecting the encoded light. It relates to a light reflector.

[0002]

2. Description of the Related Art Recently, ITS (Intelligent Transport System) has been developed.
(VICS), which emits light from an optical beacon installed on a roadside such as a highway and provides information to a car navigation system, is being put into practical use.

[0003]

However, in such a system, the optical beacon must always emit light, and power consumption is a problem.

[0004] Further, even when such a system is applied to a facility such as a hospital, power consumption similarly becomes a problem.

The present invention has been made to solve such a problem, and an object of the present invention is to provide an information providing system that supports the movement of a pedestrian without consuming unnecessary power. .

It is another object of the present invention to provide an information light reflector which reflects encoded light without requiring power.

[0007]

According to the first aspect of the present invention, there is provided an information providing system for emitting light, decoding incident light, and providing information according to the result of decoding. Including information light reflecting means for receiving light emitted from the information providing means and reflecting the encoded light,
The information providing means includes: an emitting means for emitting natural light or light having a predetermined polarization direction; and a light receiving means for receiving light reflected by the information light reflecting means or extracting and receiving light having a predetermined polarization direction from the reflected light. A decoding means for decoding the light received by the light receiving means, and an information output means for outputting information according to the decoding result in accordance with the output of the decoding means, And a plurality of polarizing films that are provided on the front surface of the same reflecting surface and that allow only light of a specific polarization direction to pass therethrough.

According to the first aspect of the present invention, the information light reflecting means passes through the polarizing film emitted from the information providing means and reflects the encoded light. The information providing means receives the reflected light, and after decoding, outputs information according to the result of the decoding. For this reason, there is no need to constantly emit information-converted light unlike the related art. Further, the information providing means may emit light as needed. Therefore, it is possible to provide an information providing system that does not wastefully consume power. Furthermore, by using the travel route information and the like as the information provided by the information providing means, it is possible to support the movement of a pedestrian such as a visually impaired person. In addition, it is possible to support the movement of automobiles, bicycles and the like as various moving bodies, work machines, and humans and animals.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the information light reflecting means further includes an absorbing film for absorbing the received light.

According to a third aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the polarizing film includes a first light-receiving element out of the received light.
A first polarizing film that transmits only light having a polarization direction of
And a second polarizing film that allows only light having a polarization direction different from the polarization direction by 90 degrees to pass therethrough.

According to a fourth aspect of the present invention, in addition to the configuration of any one of the first to third aspects, the information output means includes a storage means for storing a plurality of pieces of information and a decoding means. Means for selecting and outputting any of a plurality of pieces of information stored in the storage means in accordance with the output.

According to a fourth aspect of the present invention, in addition to the functions and effects of the first to third aspects of the present invention, the information light reflecting means is provided in accordance with the installation position of the information light reflecting means. If the information indicated by the reflected light is different, the information output means can output information according to the installation position. For this reason, optimal travel route information can be given to a pedestrian, and the movement of a pedestrian can be supported.

According to a fifth aspect of the present invention, in addition to the configuration of the first aspect, the reflecting surface reflects the light in the same direction as the received light.

According to a sixth aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the information providing means is provided in the moving body.

According to a seventh aspect of the present invention, in addition to the structure of the first aspect, the information light reflecting means is provided at a fixed point.

The information light reflector according to the invention of claim 8 is provided on the front surface of the same reflection surface as the reflection surface having the property of reflecting incident light in the incident direction, and receives the received light. And a plurality of polarizing films that pass only light in a specific polarization direction.

The information light reflector according to the invention of claim 8 transmits the incident light through a polarizing film provided on the front surface of the reflection surface, and reflects the encoded light. For this reason, encoded light can be emitted without requiring power. Various information can be expressed by using the encoded light, and when used together with a means for providing travel route information or the like, it is possible to assist the movement of a pedestrian.

According to a ninth aspect of the present invention, in addition to the configuration of the eighth aspect, the invention further includes an absorbing film for absorbing the received light.

According to a tenth aspect of the present invention, in addition to the configuration of the eighth aspect, the polarizing film is a first polarizing film that allows only light having a first polarization direction to pass therethrough. And a second polarizing film that passes only light having a polarization direction different from the first polarization direction by 90 degrees.

The invention according to claim 11 is the invention according to claims 8 to 1.
0, in addition to the configuration of the invention described in any one of (1) to (5),
Reflects light in the same direction as the received light.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a personal navigation system according to one embodiment of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Since their names and functions are the same, repetition of the description will be appropriately omitted.

Referring to FIG. 1, a personal navigation system 2 includes a personal navigator 8 for transmitting and receiving light and a corner cube 4 embedded in a ceiling 16 located on a passage 12 in a facility such as a hospital. Become.
A user 14 moving on the passage 12 in the traveling direction 10 carries the personal navigator 8. Laser light is emitted upward (in the direction of arrow 6) from the personal navigator 8 while a switch 36 described later is on. Further, of the light reflected by the reflector, light in a direction opposite to the emission direction (direction of arrow 6) enters the personal navigator 8 (direction of arrow 7). Depending on the polarization direction of the incident light,
A predetermined process is performed, and a voice message notifying the current position of the user 14 is output from the personal navigator 8. This processing will be described later.

The corner cube 4 shown in FIG. 2A is, as is well known, a combination of three total reflection surfaces 82, 84 and 86 which are orthogonal to each other. Therefore, the corner cube 4 has a property of reflecting incident light in the same direction (retroreflection). On one of the surfaces 82, a film is applied in advance. This film includes a film 88 that transmits only light in a first polarization direction (hereinafter, referred to as a “first polarizing film”) 88 and a film that does not transmit light (hereinafter, referred to as a “light absorbing film”) 89. Assume that there are two types. In the following processing, it is assumed that the total number of films to be applied to one corner cube 4 is predetermined. In addition, it is assumed that the films are stuck at equal intervals.

Referring to FIG. 3, personal navigator 8
Is a light emitting / receiving section 20, a light emitting / receiving board 22, eight recording / playback boards 24A to 24J, a speaker 26, and a power supply section 3.
4 is included. The light emitting and receiving unit 20 is connected to the light emitting and receiving board 22 and emits the surface-beam-formed laser light while reciprocating in a certain direction in accordance with an instruction from the light emitting and receiving board 22. The light reflected by the reflector enters the light emitting and receiving unit 20. The light emitting / receiving board 22 is connected to each of the recording / reproducing boards 24A to 24J. The light emitting and receiving board 22 decodes the light incident on the light emitting and receiving unit 20 into an electric signal, and transmits a control signal to one of the recording and reproducing boards 24A to 24J as necessary. Also, the light emitting / receiving board 22
Controls the emission direction of light emitted from the light emitting and receiving unit 20.

Each of the recording / reproducing boards 24A to 24J includes a recording switch 28, a reproducing switch 30, and a microphone 32.
And a memory (not shown) for storing audio signals. The sound to be reproduced is recorded in the memory through the microphone 32 in advance. Further, by pressing the reproduction switch 30, the recorded sound can be heard through the speaker 26. Furthermore, the recording / reproducing boards 24A to 24A
J responds to a control signal output from the light emitting and receiving board 22 to transmit the audio signal stored in the memory to the speaker 2.
Play through 6.

The power supply section 34 has a switch 36, and supplies power to the light emitting / receiving board 22 and the recording / reproducing boards 24A to 24J only when the switch 36 is turned on. As described above, the light emitting and receiving board 22 keeps emitting the laser light from the light emitting and receiving unit 20 while the power is supplied.

Referring to FIG. 4, light emitting / receiving section 20 includes laser light emitting sections 40A and 40B, and light receiving sections 42A and 42B. The light receiving units 42A and 42B are mounted at predetermined positions so that when the laser light emitted from the light projecting units 40A and 40B is reflected by the corner cube 4, the respective reflected light enters. In addition, a polarizing plate 43 is provided on the light emitting surface of the light emitting section 40A for passing only the light in the second polarization direction out of the laser light. It is assumed that the user 14 carries the personal navigator 8 with the direction of the personal navigator 8 determined such that the second polarization direction differs from the first polarization direction of the first polarization film 88 by 90 °. When the user 14 puts the personal navigator 8 in the breast pocket and moves in the traveling direction 10, the polarizing plate 43 of the personal navigator 8 is set so that the second polarization direction and the first polarization direction are different by 90 °. , The arrangement of the corner cubes 4, the direction in which the first polarizing film 88 is attached, and the like are determined in advance. Therefore, light that has passed through the first polarizing film 88 cannot pass through the polarizing plate 43.

Referring to FIG. 5, as described above, light emitting section 40
The surface-beam-formed laser beams emitted from A and 40B respectively reciprocate in a certain direction. The direction of the reciprocating motion is, assuming a plane perpendicular to the traveling direction 10 of the user 14, a direction 45 with a certain point in the plane as a center point and drawing an arc around the center point. Therefore, when the user is directly below the corner cube 4, the laser light is irradiated on the corner cube 4 while reciprocating.

Referring to FIG. 6, light projecting / receiving board 22 is connected to light projecting sections 40A and 40B, and emits light for controlling the direction of laser light emitted from light projecting sections 40A and 40B, respectively. A control unit 52; a received light recognition unit 50 for recognizing the intensity of light received by the light receiving units 42A and 42B; a light projecting direction control unit 52 and a received light recognition unit 5
0, and determines whether or not the received light is the reflected light from the corner cube 4. If the received light is the reflected light from the corner cube 4, the light is converted into an electric signal, and the electric signal is decoded and decoded. A determination unit 54 for transmitting a control signal to any of the recording / reproducing boards 24A to 24J determined according to the result.

Referring to FIG. 7, light emitting section 40A (40B)
Receives the left light control signal and the right light control signal transmitted from the light direction control unit 52, and responds to the rise of the left light control signal and the right light control signal to change the laser light to the left and right. Inject while moving each to the right. The corner cube 4 reflects the received light symmetrically with the center point of the corner cube 4 due to its characteristics.

Referring to FIG. 8, the processing of determination section 54 will be described. The determination unit 54 receives the output of the received light recognition unit 50,
It is determined whether the light incident on the light receiving unit 42A (42B) is the reflected light of the corner cube 4 (S2). As described above, the corner cube 4 reflects light received point-symmetrically. For this reason, referring to FIG. 2 (A), when the light beams 87A and 87B converted into surface beams emitted from the light projecting units 40A and 40B respectively move in the fixed direction 45 and enter the corner cube 4, The relationship between the reflected light intensity and time is as shown in FIGS. 2B and 2C, respectively. As described above, the reflected light intensity of the corner cube 4 is symmetric with respect to a certain time Tk. Utilizing this property, the determination unit 54 determines that the light before and after the time Tk is corner cubic 4 if the intensity of the light incident on the light receiving units 42A and 42B is symmetrical with respect to the same time Tk. It is determined that the light is reflected by.

When it is determined that the incident light is not the light reflected by the corner cube 4 (NO in S2), the light reflected by the corner cube 4 receives the light reflected by the light receiving sections 42A and 42A.
Until the light is incident on B, the process of S2 is performed. The incident light is
If it is determined that the light is reflected by the corner cube 4 (YES in S2), the information (electric signal) represented by the corner cube 4 is decoded, and then the recording / reproducing substrates 24A to 24D determined according to the decoding result. The control signal is transmitted to one of the 24J (S4). After that, the process returns to S2 to recognize the next corner cube 4.

The recording / reproducing boards 24A to 24A receiving the control signal
Either of 24J outputs the sound stored in its own memory through speaker 26. The voice stored in the memory includes information on the position where the corner cube 4 is installed. Therefore, the user 14 can confirm his / her own location by listening to this sound.

Next, the processing (S4 in FIG. 8) by which the determination unit 54 decodes the information represented by the corner cube 4 will be described in detail. The emitted light is projected on the light absorbing film 89, and when absorbed, represents a logical value of 1,
When projected on the first polarizing film 88, the logical value is 0.
Shall be expressed.

The laser beam emitted from the light emitting section 40A is
The laser light that is polarized in the second polarization direction and emitted from the light projecting unit 40B is not polarized. For this reason, the projection light from the light emitting unit 40A (40B) and the light receiving unit 42A (4
9B has a relationship as shown in FIG. That is, if no light is incident on both light receiving units 42A and 42B, it indicates that the light emitted from light emitting units 40A and 40B has been absorbed by light absorbing film 89, and represents a logical value of 1. When the light is not incident on the light receiving section 42A and the light is incident only on the light receiving section 42B, it is determined that the light is projected from the light emitting sections 40A and 40B onto the light absorbing film 89. Indicates a logical value 0. At this time, since the light emitted from the light projecting unit 40A is light in the second polarization direction, it cannot pass through the first polarizing film 88, but the light emitted from the light projecting unit 40B is natural light. Therefore, the light can pass through the first polarizing film 88.

When a relationship other than the above is established between the projected light and the incident light, the light projecting portions 42A and 42B are provided on the corner cube 4 at portions other than the first polarizing film 88 and the light absorbing film 89, respectively. It can be determined that light is being projected.

Thus, the determination section 54 can recognize the information represented by the corner cube 4 on which the film is attached by performing the following processing. For example, for the corner cube 4 in FIG.
1, 1, 1, 1, 0, 1 ". This recognition result is decoded, and a control signal is transmitted to any of the recording / reproducing boards 24A to 24J. Any of the recording / reproducing boards 24A to 24J receiving the control signal outputs a message corresponding to the information indicated by the corner cube 4 (a message indicating the installation position of the corner cube 4) by voice.

With the personal navigation system 2 described above, the user 14 can know his / her own position. Further, it is possible to accurately determine whether the light incident on the light receiving unit 42A or 42B is the reflected light of the corner cube 4.

Although the light emitting / receiving section 20 of the personal navigator 8 is provided with two light emitting sections 40A and 40B, it may be a single light emitting section.

Referring to FIG. 10, light emitting / receiving section 70 having one light emitting section includes a light emitting section 40B for emitting a laser beam converted into a surface beam, a spectroscope 76, and light receiving sections 42A and 42A.
2B, and a polarizing plate 43 that allows only light in the second polarization direction to pass therethrough. The spectroscope 76 includes a light emitting unit 40B
When the emitted laser light is reflected by the corner cube 4, it is mounted at a position where the reflected light is incident. Further, the light receiving units 42A and 42B are mounted at predetermined positions so that the two lights separated by the spectroscope 76 are respectively incident.

The relationship between the light projected and received by the light emitting and receiving unit 70 and the incident light is as shown in FIG. This relationship is illustrated in FIG.
This is the same as the relationship between the projection light and the incident light of the light emitting / receiving unit 20 described with reference to FIG. Therefore, the determination unit 54 can determine the information represented by the corner cube 4 by performing the same processing as the above-described processing.

FIG. 12 shows another example of the configuration of the light emitting / receiving section having one light emitting section. The light emitting and receiving unit 72 of FIG. 12 is different from the light emitting and receiving unit 70 of FIG.
The polarizing plate 78 of the first polarization direction is attached to the front surface of the light receiving surface of the first embodiment.

The relationship between the light projected and received by the light emitting and receiving unit 72 and the incident light is as shown in FIG. This relationship is illustrated in FIG.
This is the same as the relationship between the projection light and the incident light of the light emitting / receiving unit 20 described with reference to FIG. Therefore, the determination unit 54 can determine the information represented by the corner cube by performing the same processing as the above-described processing.

FIG. 14A shows another example 9 of the corner cube. The corner cube 9 has a first polarization direction and a 90 ° instead of the light absorbing film 89 of the corner cube 5.
A film (hereinafter, referred to as a “second polarizing film”) 102 that allows only light in different directions to pass through is used.

FIG. 15 shows another example of the configuration of the light emitting / receiving section having one light emitting section. The light emitting and receiving unit 73 in FIG. 15 is different from the light emitting and receiving unit 70 shown in FIG.
A polarizing plate 78 having a first polarization direction is attached to the front surface of the light emitting surface.

FIG. 16 shows the relationship between the light emitted from the light projecting portion 40B and the light reflected by the corner cube 9 and incident on the light receiving portions 42A and 42B.

That is, when the light of the first polarization direction is emitted to the corner cube 9, the light receiving portions 42A and 42B
If there is no light incident on any of the above, it indicates that the light of the first polarization direction emitted from the light projecting unit 40B has been projected on the second polarizing film 102. Light in the first polarization direction cannot pass through the second polarizing film 102. Therefore, the intensity of the reflected light becomes zero. The light emitted from the light projecting unit 40B in this manner is
The case where the image is projected to 2 is represented by a logical value 1.

If there is light incident on the light receiving portion 42A, but no light incident on the light receiving portion 42B, the light having the first polarization direction emitted from the light projecting portion 40B will be incident on the first polarizing film 8A.
8 indicates that the image was projected. The light in the first polarization direction passes through the first polarizing film 88 and is reflected, and the light in the first polarization direction enters the light emitting / receiving unit 73. Since the light in the first polarization direction cannot pass through the polarizing plate in the second polarization direction provided on the front surface of the light receiving unit 42A, the light receiving unit 42A
Is zero. On the other hand, since no polarizing plate is provided on the front surface of the light receiving unit 42B, light in the first polarization direction enters the light receiving unit 42B. Thus, the light emitting unit 4
The case where the light emitted from 0B is projected on the first polarizing film 88 is represented by a logical value 0.

FIG. 17A shows another example 5 of the corner cube. The corner cube 5 has three reflecting surfaces 92,
The first polarizing film 98 and the light absorbing film 99 are attached in advance near the boundaries between the reflecting surfaces 92 and 96. In addition, like the corner cube 4, one corner cube 5
It is assumed that the total number of films to be attached to is determined in advance. In addition, it is assumed that the films are stuck at equal intervals.

For this reason, when the corner cube 5 is scanned with the polarized light in the second polarization direction, which is converted into a plane beam and emitted from the light projecting unit 40A in FIG. 4, the light absorbing film 99 and the first polarizing film 98 are scanned. The reflected light intensity of a portion is slightly lower than the reflected light intensity when scanning other portions. Further, when the corner cube 5 is scanned with unpolarized surface beam light emitted from the light projecting unit 40B, the reflected light intensity of the light absorbing film 99 becomes the same as that of the light absorbing film 99 where the light absorbing film 99 is not attached. Is slightly lower than the reflected light intensity when scanning is performed. Therefore, the light receiving section 42A
17B and FIG. 17C show the relationship between the intensity of the reflected light that has been incident on and and 42B and time, respectively.

The determination section 54 can recognize information represented by the corner cube 5 by using a method similar to the above-described method.

In the personal navigation system 2 described above, the personal navigator 8 emits light as necessary, and outputs information in voice based on the light reflected by the corner cubes 4, 5, and 9. For this reason, it is not necessary to constantly emit informationized light as in the past,
Useless power consumption is suppressed. In addition, since the information is provided by voice, the visually impaired can suggest the direction of movement when moving within the facility, and can prompt danger when the visually impaired enters the danger zone, Can support the movement of the elderly. It goes without saying that guidance for healthy people can also be provided.

The information provided to the user 14 is not limited to audio, but may be text information or video information.

In the above embodiment, the pedestrian (user 1
4) has described the case where the personal navigator 8 is carried, but the present invention is not limited to this, and the personal navigator 8 may be installed on a machine such as a robot or a production machine. Alternatively, an animal capable of recognizing a specific command such as a guide dog may be carried. Furthermore, you may carry with you the animal which can act together with a human, such as a horse and a dog.

The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a personal navigation system.

FIG. 2 is a first diagram illustrating a corner cube and a relationship between light reflected by the corner cube and time.

FIG. 3 is a diagram showing a configuration of a personal navigator.

FIG. 4 is a first diagram illustrating a configuration of a light emitting and receiving unit.

FIG. 5 is a diagram illustrating a light emission direction from a light projecting unit.

FIG. 6 is a diagram showing a configuration of a light emitting and receiving board.

FIG. 7 is a diagram illustrating the reflection characteristics of a corner cube.

FIG. 8 is a flowchart illustrating processing of a determination unit.

FIG. 9 is a first diagram illustrating a relationship between emission light and incident light.

FIG. 10 is a second diagram illustrating the configuration of the light emitting and receiving unit.

FIG. 11 is a second diagram illustrating a relationship between emission light and incident light.

FIG. 12 is a third diagram illustrating the configuration of the light emitting and receiving unit.

FIG. 13 is a third diagram illustrating the relationship between the emitted light and the incident light.

14 is a diagram illustrating a corner cube and a relationship between light reflected by the corner cube and time. FIG.

FIG. 15 is a fourth diagram illustrating the configuration of the light emitting and receiving unit.

FIG. 16 is a fourth diagram illustrating the relationship between emission light and incident light.

FIG. 17 is a diagram illustrating the corner cube and the relationship between time reflected by the corner cube and time.

[Explanation of symbols]

 2 Personal Navigation System 4, 5, 9 Corner Cube 8 Personal Navigator 18 Corner Cube 20 Light Emitter / Receiver Unit 22 Light Emitter / Receiver Board 24 Recording / Reproducing Board 40 Light Emitter 42 Light Receiver 43 Polarizer 50 Light Receptor Recognition Unit 52 Light Emergency Control Unit 54 Judgment unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04B 10/22 F term (Reference) 2F029 AA07 AB05 AC02 AC11 AC18 AC20 5H180 AA21 BB06 BB08 CC03 CC24 FF05 FF25 5J084 AA04 AA09 AA12 AA20 AB07 AC08 AD03 AD09 BA04 BA36 BA57 BA59 BB14 BB15 BB17 CA62 CA70 CA80 DA01 DA07 DA09 EA27 EA40 5K002 AA05 BA02 BA21 DA05 EA04 FA03 GA06

Claims (11)

[Claims] 1. An information providing means for emitting light, decoding incident light, and providing information according to a decoding result, and receiving the light emitted from the information providing means and encoding the received light Information-reflecting means for reflecting light, the information-providing means emits natural light or light having a predetermined polarization direction, and receives reflected light from the information-light reflecting means, or Light receiving means for extracting and receiving light of a predetermined polarization direction from the reflected light; decoding means for decoding the light received by the light receiving means; and information corresponding to the decoding result in accordance with an output of the decoding means. And an information output means for outputting the information light, wherein the information light reflection means is provided on a front surface of the same reflection surface as a reflection surface having a property of reflecting incident light in an incident direction. Of light in a specific polarization direction An information providing system including a plurality of polarizing films that allow light to pass therethrough. 2. The information providing system according to claim 1, wherein the information light reflection unit further includes an absorption film that absorbs the received light. 3. The polarizing film, comprising: a first polarizing film that transmits only light having a first polarization direction out of the received light; and a light beam having a polarization direction different from the first polarization direction by 90 degrees. The information providing system according to claim 1, further comprising a second polarizing film that allows the light to pass therethrough. 4. The information output means includes: storage means for storing a plurality of information; and one of the plurality of information stored in the storage means selected and output according to an output of the decryption means. The information providing system according to any one of claims 1 to 3, further comprising: 5. The information providing system according to claim 1, wherein the reflecting surface reflects light in the same direction as the received light. 6. The information providing system according to claim 1, wherein said information providing means is provided in a moving body. 7. The information providing system according to claim 1, wherein the information light reflecting means is provided at a fixed point. 8. A reflection surface having a property of reflecting incident light in an incident direction, and a plurality of reflection surfaces provided on a front surface of the same reflection surface and passing only light having a specific polarization direction among received light. An information light reflector including a polarizing film. 9. The information light reflector according to claim 8, further comprising an absorbing film for absorbing the received light. 10. The polarizing film, comprising: a first polarizing film that transmits only light having a first polarization direction out of received light; and only a light having a polarization direction different from the first polarization direction by 90 degrees. The information light reflector according to claim 8, further comprising a second polarizing film that allows the light to pass therethrough. 11. The information light reflector according to claim 8, wherein said reflection surface reflects light in the same direction as received light.