JP3847309B2 - Pedestrian traffic signal - Google Patents

Description

  The present invention relates to a traffic signal for a pedestrian, and more particularly to a traffic signal for a pedestrian on which a picture such as a crossing is displayed.

  Conventionally, traffic lights for pedestrians have a light bulb disposed inside the traffic light, displaying a pattern such as a crossing person on separate light emitting surfaces colored in red and blue, and a light bulb disposed inside By switching the lighting state of, the crossing possible state and the crossing prohibition state are expressed. In addition, a plurality of light emitting diodes are arranged on a substrate inside the traffic light, and these are caused to emit light, thereby displaying a picture of a crossable state and a crossing prohibited state.

  By the way, in the conventional traffic signal for pedestrians, in the crossable state, only the light emitting surface side (hereinafter referred to as the crossable region) of the area where the image indicating the crossable state is displayed emits light, and the crossing prohibited state is set. The light emitting surface side (hereinafter referred to as a crossing prohibition region) on which the picture to be displayed is displayed is non-light emitting. In the crossing prohibited state, only the crossing prohibited region emits light, and the crossable region does not emit light.

  The above prior art is naturally performed by those skilled in the art, and the applicant is not aware of a document describing the prior art.

  However, in the conventional traffic signal for pedestrians, when displaying the crossing prohibition state, only the crossing prohibition area that is half of the light emitting surface emits light, and the display surface is small, so the impact on pedestrians is sufficient. Therefore, further improvement has been desired as an information power for transmitting that the crossing is prohibited (that is, crossing is dangerous). In particular, when a light-emitting diode is applied as the light-emitting means constituting the light-emitting surface, it is general that the light-emitting means in the background part of the pattern is made non-light-emitting and only the pattern part emits light in blue or red. The purpose of this was to make the outline of the pattern shape easier to capture and improve the visibility by making the difference in brightness between the background part and the picture part noticeable. However, the background part does not emit light. As a result, the area of the light emitting part is even smaller than when using a light bulb, etc., and there is a possibility that it will be more difficult to raise awareness of the pedestrian's danger of crossing by keeping a close eye on the display of the prohibited crossing state. It was.

  Therefore, in view of the above situation, the present invention provides a traffic signal for a pedestrian that improves visibility, clearly communicates that a pedestrian is in a crossing prohibited state, and further improves safety. Is an issue.

  A traffic signal for a pedestrian according to the present invention includes a casing having a light emitting surface partitioned into a crossable region and a crossing prohibited region on the front surface, light emitting means disposed in the casing, the crossable region, An image data storage means for storing at least two types of image data, which is a basis of a picture displayed in the cross-restricted area, and the cross-accessible area in the cross-capable area in the image data storage means. Crossable area control means for displaying a picture indicating the crossable state based on image data, and in the crossing prohibited state, the crossing prohibited area in the crossing prohibited area based on the image data stored in the image data storage means. A cross-restricted area control means for displaying a picture indicating a prohibited state, wherein the cross-able area control means is configured to display the crossing in the cross-restricted state. Red emit light the emitting surface entire capacity region "is intended.

  Here, the “light emitting means” is for urging pedestrians by changing the mode of emitted light, and examples thereof include LEDs (light emitting diodes).

  Therefore, according to the traffic signal for pedestrians of the present invention, in a crossing prohibited state, a picture indicating a crossing prohibition is displayed in the crossing prohibited area, and an area opposite to the area where the picture is displayed (that is, a crossable area). ) To emit red light. That is, in the crossing prohibition state, the entire light emitting surface divided into the crossable region and the crossing prohibition region is effectively used to emit light. Thereby, the visibility of the signal display in the crossing prohibited state is remarkably improved, and the signal state can be confirmed easily and reliably even from a relatively distant place. Moreover, it is possible to provide a traffic signal for pedestrians that can give a sufficient impact to pedestrians and arouse awareness of crossing hazards, and can be safer.

  By the way, in the present invention, “the crossing prohibited area control means causes the light emission surface of the crossing prohibited area to emit blue light in the crossable state”.

  According to the traffic signal for pedestrians of the present invention, in the crossable state, a picture indicating that crossing is possible is displayed in the crossable area, and the entire area of the crossing prohibited area is made to emit blue light. That is, even in the crossable state, the crossable state is transmitted to the pedestrian by expressing the crossable state by effectively using the entire light emitting surface. Thereby, the visibility of the signal display can be improved even in the crossing enabled state.

  By the way, in the present invention, “the crossable area control means and the crossing prohibition area control means cause the light emitting means corresponding to the pattern shape of the pattern to emit blue or red, and corresponds to a background shape as a background of the pattern. The light emitting means that does not emit light ”can be used.

  According to the traffic signal for pedestrians of the present invention, only the light emitting means corresponding to the pattern shape emits light in the area where the pattern is displayed, for example, in the crossable area in the crossable state, and becomes the background of the pattern. The light emitting means corresponding to the background shape does not emit light. As a result, the brightness contrast between the light emitting part (= picture) and the non-light emitting part (= background) becomes remarkable, so that the visibility of the picture shape is remarkably improved. On the other hand, the area opposite to the area where the pattern is displayed (for example, the crossable area in the crossing prohibited state) emits light entirely, so that in a conventional traffic signal for pedestrians, when a light emitting diode is applied, The problem that the light emitting portion is reduced does not occur. For this reason, the display which gives a strong impact with respect to a pedestrian can be implement | achieved, ensuring sufficient visibility.

  By the way, in the present invention, for those who have difficulty in distinguishing color vision, especially those who have difficulty in distinguishing between green (generally, the blue color used for traffic lights is a color scheme close to green) and red, The possibility of misidentification as a crossing prohibition state could not be eliminated. Therefore, in view of this problem, “the crossable area control unit dynamically generates a picture indicating the crossable state displayed in the crossable area based on the image data stored in the image data storage unit. It further includes a moving image display control means for displaying.

  According to the traffic signal for pedestrians of the present invention, the picture displayed in the crossable area, that is, the picture indicating the crossable state is dynamically changed and displayed by further providing the moving image display control means. Therefore, the difference between the picture showing the crossable state and the picture showing the crossing prohibition state becomes clear, and even for those who have difficulty in distinguishing color vision, the display of the traffic light is displayed by dynamic display and static display of the pattern. The state can be identified. Thereby, the traffic signal for pedestrians with higher safety can be provided.

  Thus, according to the traffic signal for pedestrians of the present invention, in the crossing prohibition state, both the crossable region and the crossing prohibition region are caused to emit light at the same time, and one side is illuminated with a picture and the other is entirely red. Express the state. Thereby, since a strong impact can be given to a pedestrian and attention can be paid to the display of a crossing prohibition state, a highly safe pedestrian traffic signal can be provided. In addition, since it is possible to display that the crossing is prohibited by using a double area as compared with a conventional traffic signal for pedestrians, the visibility is remarkably improved and the possibility of misidentification can be reduced.

  Hereinafter, the traffic signal 1 for pedestrians which is embodiment of this invention is demonstrated based on FIG. 1 thru | or FIG. 1 and 2 are a perspective view and an exploded perspective view showing a configuration of a traffic signal for a pedestrian, FIG. 3 is a block diagram showing a functional configuration of the traffic signal for a pedestrian, and FIGS. It is explanatory drawing which shows the display form of the traffic signal for pedestrians, and FIG. 6 is a flowchart which shows the flow of the process in the traffic signal for pedestrians.

  As shown in FIGS. 1 and 2, a traffic signal 1 for pedestrians (hereinafter referred to as “signal 1”) of the present embodiment includes a substantially rectangular parallelepiped casing 3 having two windows 2 formed on the front surface, and a casing. Two front panels 4 for closing the window portion 2 from the inside, a substrate 6 provided behind the front panel 4 and having a plurality of light emitting means 5 attached thereto, and a control means 7 for controlling the individual light emitting means 5; It is composed of

  The casing 3 includes a front side member 8 and a rear side member 9. Examples of the material of the casing 3 include wood, plastic, and metal. The front member 8 has two windows 2 on the front surface, and the rear member 9 has a connection port 10 on the top. The front side member 8 and the rear side member 9 are attached so that the left and right one end sides are rotatable by a hinge 11, and the other end side is locked by a locking fitting 12. The connection port 10 is connected to an arm extending from a utility pole or support (not shown), and a power supply line and a signal line (not shown) for transmitting and receiving signals are wired.

  The front panel 4 is a transparent or translucent plate-like member, and light emitted from the light emitting means 5 passes through the front panel 4 and is emitted to the outside. That is, the front panel 4 corresponds to the light emitting surface of the present invention. Here, when a translucent plate-like member is used for the front panel 4, the light emitted from the light emitting means 5 is diffused, and there is an effect of blurring the outline of the picture displayed on the light emitting surface. Thereby, the outline and movement of the pattern can be displayed smoothly. In particular, in the present embodiment, the front panel 4 is divided into two regions, a crossable region G and a crossing prohibited region S. The crossable area G is an area in which a picture that expresses crossability is displayed in the crossable state, and the crossing prohibited area S is an area in which a picture that expresses crossing prohibition is displayed in the crossing prohibited state. is there.

  As the light emitting means 5 in this embodiment, a light emitting diode is applied. A light emitting diode is a type of semiconductor element that emits light when an electric current is passed. When a bias voltage in the forward direction (a voltage in which the anode is positive and the cathode is negative) is applied to these two terminals, which are an anode and a cathode, a current flows in the element to emit light. In this embodiment, in particular, a bullet-type element in which three light-emitting diodes that generate the three primary colors R (red), G (green), and B (blue) are packaged together is used. Yes. The light emitting means 5 which is a shell-type element can mix these three colors and express various colors.

  Mounting holes (not shown) for mounting the light emitting means 5 are provided in the substrate 6 in a grid pattern at regular intervals, and electrode terminals of the light emitting means 5 are inserted into these mounting holes. Therefore, uniform light can be emitted from the entire light emitting surface, and the pattern area and the background area can be visually distinguished by changing the light emission mode in each light emitting means 5. It has become.

  As shown in FIG. 3, the control device 7 is constructed from a computer or the like having a function capable of communicating with an external device. As a functional configuration, a crossable area control means 13, a crossing prohibition area control means 14, and image data for controlling the crossable area G and the crossing prohibition area S to express a crossable state and a crossing prohibition state, respectively. Storage means 15 is provided. As shown in FIG. 4A, the traversable area control means 13 extracts image data for displaying a picture 16 indicating the traversable state in the traversable state from the image data storage means 15, and Is displayed. Specifically, in the traversable region G, the light emitting means 5 corresponding to the pattern shape of the pattern 16 emits light in blue, and the light emitting means 5 corresponding to the background shape of the pattern 16 is made non-light emitting, so Is displayed. Further, when switching to the crossing prohibited state, the entire crossable region G emits light in red, that is, all the light emitting means 5 disposed in the crossable region G emits red light (see FIG. 4B). Display that the crossing is prohibited. Thereby, it can be effectively transmitted to a pedestrian that it is a crossing prohibition state. Further, the crossable area control means 13 includes a moving image display control means 17 that dynamically displays the picture 16 displayed in the crossable area G. For example, as shown in FIG. 5, the moving image display control means 17 reads the image data related to the pattern 16 from the image data storage means 15, and displays the pattern 16 displayed in the crossable area G as the pattern 18 → the pattern 19 → the pattern 20 ( 5 (a) to 5 (c)). Thereby, it can be shown as if the pattern (character) is walking, and it can be surely transmitted to the pedestrian that it is possible to cross.

  On the other hand, the crossing prohibited area control unit 14 extracts image data for displaying the pattern 22 indicating the crossing prohibited state in the crossing prohibited state from the image data storage unit 15 and displays it in the crossing prohibited area S (FIG. 4B). )reference). Specifically, the light emitting means 5 corresponding to the pattern shape of the pattern 22 in the crossing prohibited area S is caused to emit red light, and the light emitting means 5 corresponding to the background shape 27 of the pattern 22 is not light-emitted. Further, when the state is switched to the crossing enabled state, the entire crossing prohibited area S emits blue light, that is, all the light emitting means 5 disposed in the crossing prohibited area S emit blue light (see FIG. 4A). Thereby, the visibility of the display which shows a crossing possible state can be improved. The switching between the crossable state and the crossing prohibited state is performed by changing the display form of the crossable region control unit 13 and the crossing prohibited region control unit 14 based on the external control signal recognized by the control signal recognition unit 21. Is done by.

  Next, the operation of the traffic light 1 of the embodiment will be described based on the flowchart of FIG. It is determined whether or not the external control signal recognized by the control signal recognizing means 21 has instructed the transition to the traversable state. If there is an instruction to shift to the crossable state (YES in step S1), the crossable region control unit 13 can cross the crossable region G based on the image data stored in the image data storage unit 15. The pattern 16 indicating the state is dynamically displayed (pattern 18 → 19 → 20) (step S2). Specifically, as shown in FIG. 5, the light emitting means 5 corresponding to the patterns 18, 19, and 20 is caused to emit blue light and correspond to the background shapes 23, 24, and 25 corresponding to the backgrounds of the patterns 18, 19, and 20, respectively. The light emitting means 5 that does not emit light. At the same time, the light emission means 5 disposed in the crossing prohibited area S is caused to emit blue light by the crossing prohibited area control means 14 (step S3).

  Thereafter, in the traversable state, if there is an instruction to blink by an external control signal (YES in step S4), the dynamic display of the pattern 16 displayed in the traversable area G is stopped and displayed statically. At the same time (step S5), the light emitting means 5 corresponding to the pattern shape of the pattern 16 is blinked (step S6). The meaning of the blinking display is a display for transmitting the pedestrian to the banned state in a safe and reliable manner by transmitting to the pedestrian the transition from the crossable state to the crossing prohibited state. As a result, dangerous crossings such as a crossing after the possible crossing time becomes extremely short (flashing state) can be suppressed. Moreover, since the time of a blinking state is short normally and it is necessary to finish crossing a pedestrian crossing quickly, it is not preferable to pay attention to a signal display too much. Accordingly, the static display of the pattern 16 not only can appeal to the pedestrian more strongly that the crossing prohibition state is imminent, but also eases the gaze on the pattern 16 once, There is also an effect of prompting completion. Thereby, the safer traffic signal 1 can be provided.

  If an instruction to shift to the crossing prohibition state is given by the external control signal (YES in step S7), the transition to the crossing prohibition state shown in FIG. In the crossing prohibited state, the crossing prohibited region control unit 14 displays the picture 22 indicating the crossing prohibited state as a still image in the crossing prohibited region S based on the image data extracted from the image data storage unit 15 (step S8). . At the same time, the crossable area control means 13 causes the entire crossable area G to emit red light (step S9).

  Thereafter, when an external control signal instructs to shift to a crossing enabled state (YES in step S10), the process returns to step S2 and the processes of S2 to S9 are repeated.

  As described above, the traffic light 1 according to the present example includes the crossable area control unit 13, the crossing prohibition area control unit 14, and the image data storage unit 15, thereby simultaneously emitting both the crossable area and the crossing prohibition area. By letting the picture to be emitted on one side and the other side to emit light entirely, it is possible to clearly transmit to the pedestrian whether or not crossing is possible. Furthermore, the display of the traffic light 1 can be confirmed even from a relatively long distance by displaying using the area equivalent to twice the conventional area (by causing the crossable region G and the crossing prohibited region S to emit light simultaneously). This can reduce the possibility of misrecognizing the display state. In particular, in the traffic light 1 in which a light emitting diode is applied as the light emitting means 5 so that only the pictures 16 and 22 emit light and the background shapes 26 and 27 do not emit light, the area opposite to the area where the pictures 16 and 22 are displayed. With the configuration in which the entire region emits light, it is possible to provide crossability information while ensuring a sufficient light emitting area and high visibility. Thereby, especially in a crossing prohibition state, a pedestrian has a strong impact, and it is possible to arouse awareness of crossing danger by gazing at the display of the crossing prohibition state, and the traffic signal 1 with higher safety can be provided.

  Further, in the present embodiment, the crossable area control unit 13 further includes a moving image display control unit 17 that dynamically displays the pattern 16 displayed in the crossable area G. Therefore, since the pedestrian can confirm the pattern 16 indicating the crossable state as a dynamic display, even for those who are difficult to discern the color sense, the dynamic display of the pattern and the static display of the traffic light The display state can be identified, and a safer road crossing situation can be enjoyed. Moreover, since the pattern 16 is moving, an impact can be given to a pedestrian and attention can be collected.

  The present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to these embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention, as described below. Design changes are possible.

  For example, although the case where a light emitting diode is applied as the light emitting unit 5 has been described in the above embodiment, a configuration using an electroluminescence element (EL element) or a display device using field emission technology may be used. A display using an EL element is a display in which a light emitter is vapor-deposited on a glass substrate and the voltage applied to the substrate is controlled so that high luminance can be obtained with low power, visibility, response speed, and consumption. Excellent in terms of power. A display using field emission technology is a display that emits electrons from a planar electron emission source into a vacuum and strikes the phosphor to emit light (a so-called CRT technology is applied to small pixels). However, these techniques are inferior to light emitting diodes in terms of economy, life, and weather resistance, and therefore it is more preferable to use light emitting diodes.

  In the above embodiment, the display state is switched by an external control signal. However, when a push button is provided and the push button is operated during the crossing prohibited state, a certain time has elapsed after the operation. It is also possible to shift to a crossable state.

  Moreover, in the said embodiment, when it changed to the blinking state, it was set as the structure which stops the dynamic display of the pattern 16 and displays statically, but it is not limited to this, It transfers to a crossing prohibition state. It is good also as a structure which continues a dynamic display until. Furthermore, you may make it display dynamically different from the dynamic expression of the pattern 16 in the crossing possible state at the time of non-flashing. In other words, if a dynamic display such as walking (running) is performed faster than the walking speed of the pattern 16 in the crossable state until the blinking display is started, the remaining time that the pedestrian can cross is reduced. If you use a dynamic display like walking slowly, you can expect to stop walking and stop crossing. Further, when expressing the blinking state, the light emitting means 5 corresponding to the pattern area of the pattern 16 is blinked. However, the light emitting means 5 in the crossing prohibited area S may be blinked simultaneously, or the crossing prohibited area S Only the light emitting means 5 may be blinked. According to this configuration, since a blinking state is displayed using a larger area than when only the pattern 16 of the crossable region G is blinked, a blinking display can be confirmed even by a pedestrian who is relatively far away.

It is a perspective view which shows the structure of the traffic signal for pedestrians of this invention. It is a disassembled perspective view which shows the structure of the traffic signal for pedestrians. It is a block diagram which shows the functional structure of the traffic signal device for pedestrians. It is explanatory drawing which shows the display form of the traffic signal for pedestrians. It is explanatory drawing which shows the dynamic display of the pattern in the crossing possible state of the traffic signal apparatus for pedestrians. It is a flowchart which shows the flow of a process in the traffic signal for pedestrians.

Explanation of symbols

1 Traffic signal for pedestrians 3 Casing 4 Front panel (light emitting surface)
5 Light emitting means 13 Crossable area control means 14 Crossing prohibited area control means 15 Image data storage means 17 Movie display control means G Crossable area S Crossing prohibited area

Claims (4)

A casing having a light emitting surface partitioned into a crossable region and a crossing prohibited region on the front surface;
Light emitting means disposed in the casing;
Image data storage means for storing at least two types of image data, which is a basis of a pattern displayed in the crossable area and the crossing prohibited area;
In a crossable state, a crossable region control unit that displays a picture indicating the crossable state on the crossable region based on the image data stored in the image data storage unit;
In the crossing prohibition state, the crossing prohibition region includes a crossing prohibition region control unit that displays a picture indicating the crossing prohibition state on the basis of the image data stored in the image data storage unit in the crossing prohibition region,
The pedestrian traffic signal device, wherein the crossable area control means causes the entire light emitting surface of the crossable area to emit red light in the crossing prohibited state. The traffic signal for a pedestrian according to claim 1, wherein the crossing prohibited area control means causes the entire light emitting surface of the crossing prohibited area to emit blue light in the crossable state. The crossable area control means and the crossing prohibited area control means cause the light emitting means corresponding to the pattern shape of the pattern to emit light in blue or red, and the light emitting means corresponding to the background shape serving as the background of the pattern to emit no light. The traffic signal for pedestrians according to claim 1 or 2, characterized by the above-mentioned. The crossable area control means further includes a moving image display control means for dynamically displaying a picture indicating the crossable state displayed in the crossable area based on the image data stored in the image data storage means. The traffic signal for pedestrians according to at least one of claims 1 to 3, further comprising:

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