JP6860135B2 - Pedestrian crossing signal display system using light emitting Braille block - Google Patents

Description

The present invention relates to a pedestrian crossing signal display system using a pedestrian crossing block, and more particularly to a pedestrian crossing signal display system using a pedestrian crossing block capable of displaying a signal in cooperation with a pedestrian crossing signal light.

Braille blocks are blocks having irregularities on the surface so that visually impaired people can easily grasp dangerous areas, and are mainly provided on subway movement routes and landings, pedestrian crossings, ramps, stairs, and the like.

Such Braille blocks are usually painted in yellow so that they can be easily recognized by non-visually impaired people. However, there is a problem that it is difficult to visually recognize the Braille block, especially at night outdoors and on rainy or snowy weather days.

Here, a Braille block in which a light emitting body is provided and visually easily recognized has been developed and partially applied. Such a light emitting Braille block has an LED built in the protruding portion of the Braille block, and the light of the LED is projected to the outside to make pedestrians recognize that the Braille block exists in a dangerous zone.

In particular, with the recent increase in the use of smartphones, pedestrians do not pay attention to the conditions and traffic lights of surrounding roads, so accidents are increasing while crossing pedestrian crossings. Therefore, there is a demand for a function of providing an LED on a Braille block attached to the entrance of a pedestrian crossing to display the current pedestrian crossing signal.

However, in the conventional light emitting Braille block, since LEDs are attached to each protruding portion, the number of LEDs installed is large, the power consumption is high, the brightness is insufficient, and it is difficult to recognize the lighting of the LEDs during the daytime. There was a problem.

Therefore, there is a demand for a new light emitting Braille block that can reduce power consumption and at the same time express sufficient brightness.

The matters described as the background art are intended to make it easier to understand the background of the present invention, and correspond to the prior art already known to those having ordinary knowledge in the art. It must not be accepted as an admission.

KR10-2009-0125488A (2009.12.07) JP2004-003163A (2004.01.08)

The present invention is for solving the above-mentioned problems, and an object of the present invention is to express sufficient brightness so that it can be applied day and night and can be easily recognized by a non-visually impaired person. Provided a pedestrian crossing signal display system using a light emitting Braille block with low power consumption.

The pedestrian crossing signal display system using the pedestrian crossing block according to the embodiment of the present invention is attached to a block cover having a plurality of protrusions capable of transmitting light formed on the upper surface and inside the block cover. A light emitting module that transmits one or two of green light and red light to the protrusion so that the protrusion represents one of green, red, and yellow colors, and the block cover. It is configured to include a light-shielding plate that is inserted between the light emitting module and a flat plate of an opaque material that does not allow light to pass through, and has a through hole having a shape corresponding to the protrusion shape of the block cover. , A pedestrian crossing block that is provided on the pedestrian crossing approach road and whose protrusion represents the same hue as the lighting color of the pedestrian crossing signal light; to light the electric wire for lighting the green signal of the pedestrian crossing signal light and the red signal. A sensing unit that senses whether or not a current is flowing through the electric wire of the pedestrian crossing; and the current lighting state detected by the sensing unit is used to determine the current lighting state of the pedestrian crossing signal light and transmit the lighting signal to the light emitting point block. Control unit;

The sensing unit lights a first sensor that detects whether or not a current flows through a first electric wire that supplies power to light a green signal of the crosswalk signal light; and a red signal of the crosswalk signal light. The control unit includes a second sensor that detects whether or not a current flows through a second electric wire that supplies electric power for the first sensor; if the current is detected by the first sensor, the light emitting point block is green. The lighting signal is transmitted so that the signal of the above is lit, and if the current is detected by the second sensor, the lighting signal is transmitted so that the red signal is lit to the light emitting Braille block, and the first sensor If no current is detected by the second sensor, the lighting signal can be transmitted to the light emitting point block so that the yellow signal blinks.

In the light emitting module, a plurality of light guide patterns are engraved on the lower surface, and a flat plate-shaped refracting portion formed of a material that transmits light; A light emitting unit that irradiates one or two of the light and the red light; and a reflecting plate that is provided on the lower surface of the refracting unit and reflects the light emitted from the light emitting unit; The light irradiated with is scattered by the light guide pattern and can be transmitted to the protrusion.

The light emitting unit includes a plurality of first light emitting elements that generate green light alternately arranged along one side corner of the refracting portion; and a plurality of second light emitting elements that generate red light; In addition, at the corners of the refracting portion so as to prevent the light generated by the light emitting element from being transmitted to the side surface of the refracting portion while releasing the heat generated by the first light emitting element and the second light emitting element to the outside. A radiator plate provided along the line; can be included.

The refracting portion is formed by laminating a first plate and a second plate having a light pattern engraved on the lower surface thereof, and the heat radiating plate wraps a part of the side surface and the upper and lower surfaces of the refracting portion. The first light emitting element and the second light emitting element are provided in the central portion inside the heat radiating plate, and the first light emitting element and the second light emitting element are provided. The inside of the heat radiating plate is filled with a transparent resin, and the first light emitting element and the second light emitting element can be sealed.

If the pedestrian crossing signal display system using the light emitting pedestrian crossing block according to the embodiment of the present invention is used, the pedestrian crossing signal light information can be transmitted to pedestrians while the pedestrian crossing block is lit in green, red, and yellow using less energy. Can be communicated.

FIG. 6 is a configuration diagram of a pedestrian crossing signal display system using a light emitting Braille block according to an embodiment of the present invention. Perspective view of the light emitting Braille block. An exploded perspective view of a light emitting Braille block. Sectional view of the light emitting module. Side sectional view and top view of the refracting part. The drawing which shows the light emitting element provided in the heat radiation plate.

Hereinafter, a pedestrian crossing signal display system using a light emitting Braille block according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the examples described below, and may be embodied in various forms that differ from each other, and the following description is provided to fully inform the scope of the invention.

The pedestrian crossing signal display system using the pedestrian crossing block according to the embodiment of the present invention is provided with a block cover 100 in which a plurality of protrusions 112 capable of transmitting light are formed on the upper surface and inside the block cover 100. A light emitting module 200 and a block that transmit one or two of green light and red light to the protrusion 112 so that the protrusion 112 represents one of green, red, and yellow colors. A light-shielding plate that is inserted between the cover 100 and the light emitting module 200 and is formed in the form of a flat plate made of an opaque material that does not transmit light, and has a through hole 310 having a shape corresponding to the shape of the protrusion 112 of the block cover 100. In order to light a pedestrian crossing signal light 50 with a pedestrian crossing signal light 50 and a pedestrian crossing signal light 50's green signal 51 The current lighting state of the pedestrian crossing signal light 50 is measured by using the sensing unit 20 that detects whether or not a current flows through the electric wire and the electric wire for lighting the red signal 52, and the current detected by the sensing unit 20. It is configured to include a control unit 30 that determines and transmits a lighting signal to the light emitting Braille block 10.

The detailed configuration of the light emitting Braille block 10 will be described later, and first, the configuration of the pedestrian crossing signal display system using the light emitting Braille block will be described.

The light emitting Braille block 10 is configured to act as a kind of bottom signal light by emitting light in the same hue as the current signal of the pedestrian crossing 40.

The light emitting Braille block 10 is provided at the bottom of the approach roads at both ends of the pedestrian crossing 40. As a result, when a pedestrian enters the pedestrian crossing 40, the signal of the current pedestrian crossing 40 can be confirmed through the emission color of the light emitting point block 10 provided at the bottom without checking the signal light 50.

A sensing unit 20 and a control unit 30 are provided to detect the signal of the current signal lamp 50 and transmit it to the light emitting Braille block 10.

The sensing unit 20 has a first sensor 21 for confirming whether or not the green signal 51 of the signal light 50 has been turned on, and a first sensor 21 for confirming whether or not the red signal 52 of the signal light 50 has been turned on. It is configured to include two sensors 22.

The first sensor 21 is provided so as to wrap the first electric wire 54 for lighting the green signal 51 of the signal light 50, and the second sensor 22 is the second electric wire 53 for lighting the red signal 52 of the signal light 50. It is provided to wrap around.

The first sensor 21 and the second sensor 22 are current sensors that detect whether or not a current flows through the first electric wire 54 and the second electric wire 53, and for example, a CT (Current Transformer) sensor may be used. Therefore, the first sensor 21 and the second sensor 22 do not need to be directly electrically connected to the first electric wire 54 or the second electric wire 53, and are provided so as to wrap over the coating of the first electric wire 54 or the second electric wire 53. It is easy to install without any separate electrical installation.

After transmitting the current detection signal from the first sensor 21 and the second sensor 22, the control unit 30 determines whether the current lighting signal of the signal lamp 50 is a green signal 51 or a red signal 52. After that, the light emitting signal is transmitted to the light emitting Braille block through the signal transmission line 31.

At this time, the control unit 30 transmits a signal so that the light emitting point block 10 emits light in green when the signal light 50 is a green signal 51, and the light emitting point block 10 emits light in red when the signal light 52 is a red signal 52. To transmit the signal.

On the other hand, if the signal light 50 breaks down or the operation of the signal light 50 stops at midnight, neither the first sensor 21 nor the second sensor 22 can detect the current. At this time, the control unit 30 determines that it is an exceptional situation, and transmits a signal so that the light emitting Braille block 10 blinks in yellow and emits light.

On the other hand, the light emitting Braille block 10 includes a block cover 100, a light emitting module 200, and a light shielding plate 300.

The block cover 100 includes a block-shaped upper case 110 whose lower side is open and a block-shaped lower case 120 whose upper side is open, and is formed by combining such an upper case 110 and a lower case 120. A light emitting module 200 and a light shielding plate 300 are provided in the internal space.

The upper case 110 is formed by including a block-shaped base portion 111 and a plurality of protrusions 112 formed so as to project from the upper surface of the base portion 111, and the light generated by the light emitting module 200 causes the protrusions 112. It is preferable that at least the protrusion 112 is made of a material capable of transmitting light so that the light can be transmitted.

At this time, the base portion 111 and the protrusion 112 can be integrally formed by the upper case 110 for the convenience of manufacturing. In this case, the base portion 111 and the protrusion 112 may be made of a material capable of transmitting light as a whole.

The hues of the base portion 111 and the protrusion 112 are preferably yellowish colors as in the general Braille block, and are preferably formed semitransparently so as not to directly irradiate a non-visually impaired person with too strong light. ..

The lower case 120 is usually buried under the ground, and the material and form thereof are not particularly limited, but preferably, the lower case 120 is formed in an opaque black hull shape and transmits light through the lower case 120. Should be minimized.

The shape of the protrusion 112 may be formed in, for example, a hemispherical shape, a cylindrical shape, a truncated cone shape, a rod shape, or the like, or may be deformed as necessary. It is preferable that the surface of the protrusion 112 is further formed with irregularities in order to prevent sliding.

The light emitting module 200 is provided inside the block cover 100 and transmits light to the protrusions 112 of the block cover 100 so that the protrusions 112 shine in various hues. The light emitting module 200 selectively generates one or two of green light and red light, thereby transmitting green, red, and yellow light in which green and red are combined to the protrusion 112. Make the protrusion 112 glow green, red and yellow.

On the other hand, in order to prevent the light generated by the light emitting module 200 from being transmitted to a place other than the protrusion 112 of the block cover 100, it is preferable to separately provide a light shielding plate 300 between the block cover 100 and the light emitting module 200. More precisely, the light-shielding plate 300 is provided between the lower side surface inside the upper case 110 and the upper side surface of the light emitting module 200.

The light-shielding plate 300 is made of an opaque material capable of blocking the light generated by the light emitting module 200, and a plurality of through holes 310 having a shape corresponding to the protrusion 112 of the block cover 100 are formed. Due to the shape of the light-shielding plate 300, the light generated by the light emitting module 200 is emitted only to the through-hole 310 formed by the light-shielding plate 300, and thus only the protrusion 112 formed at the position corresponding to the through-hole 310. Is irradiated with light, and only the protrusion 112 of the block cover 100 shines.

Looking at the light emitting module 200 in more detail, the light emitting module 200 has a flat plate-shaped refracting portion 210 and a refracting portion 210 formed of a material in which a plurality of light guide patterns 213 are engraved on the lower surface and transmit light. A light emitting unit 220 provided on one side and irradiating one or two of green light and red light inside the refracting unit 210, and a light emitting unit 220 provided on the lower surface of the refracting unit 210 and irradiated from the light emitting unit 220. It is formed including a reflector 230 that reflects the light.

The material of the refracting portion 210 is transparent and is not particularly limited as long as it can transmit light, but for example, a plate material made of an acrylic material may be provided.

The light guide pattern 213 formed on the refracting portion 210 is a hemispherical or hemi-elliptical spherical engraved portion, and is formed on the lower surface of the refracting portion 210. The light generated by the light emitting element 221 and radiated to the inside of the refracting portion 210 is scattered at the boundary surface of the light guide pattern 213, and the light scattered in this way passes through the upper side surface of the refracting portion 210 and is blocked. It is transmitted to the protrusion 112 of the cover 100.

A plurality of the light guide patterns 213 are provided so as to form one scattering pattern 214, and such a scattering pattern 214 is formed in a shape corresponding to the shape of the protrusion 112 of the block cover 100. Is preferable. That is, by forming the shape and number of the scattering pattern 214 and the shape and number of the protrusion 112 of the block cover 100 to be the same, the light scattered by each scattering pattern 214 is individually formed on each protrusion 112. To be supplied.

At this time, it is preferable that each scattering pattern 214 is formed with a high density of the light guide pattern 213 at the central portion and a low density of the light guide pattern 213 at the peripheral portion. By making the density of the light guide pattern 213 different in this way, the light scattered by the scattering pattern 214 and transmitted to the protrusion 112 of the block cover 100 can be more concentrated in the center of the protrusion 112. Through this, the protrusion 112 can be effectively made to shine even with a small amount of light.

By scattering the light generated by the light emitting elements integrally installed in this way by the respective scattering patterns 214 and transmitting the light to the protrusions 112, separate lighting fixtures, for example, LEDs can be installed for each of the protrusions 112 of the block cover 100. Not only can the power consumption be reduced compared to the provision, but also a soft scattered light can be provided compared to directly irradiating the light by the LED, so that the signal is transmitted to the non-visually impaired person with a comfortable lighting. can do.

The refracting portion 210 may be formed in the form of one plate material, but preferably, the refracting portion 210 may be formed by laminating two plate materials composed of the first plate 211 and the second plate 212. At this time, a light guide pattern 213 is formed on the lower surfaces of the first plate 211 and the second plate 212, respectively.

By forming the refracting portion 210 by laminating two plate materials composed of the first plate 211 and the second plate 212 in this way, the refracting portion 210 was scattered by the light guide pattern 213 of the first plate 211 laminated underneath. Since the light is scattered again by the light guide pattern 213 of the second plate 212 on which the light is laminated, uniform and soft light can be created, so that each protrusion 112 of the block cover 100 shines with uniform brightness. Can be done. At this time, it is more preferable that the first plate 211 and the second plate 212 are in close contact with each other.

The light emitting unit 220 is provided on the side surface of the refracting unit 210 and irradiates the refracting unit 210 with light, and at the same time, serves to fix the first plate 211 and the second plate 212 forming the refracting unit 210 in close contact with each other.

The light emitting unit 220 includes a light emitting element 221 composed of a plurality of first light emitting elements 221a for generating green light and a plurality of second light emitting elements 221b for generating red light, and heat generated by the light emitting element 221. Is included in the heat radiating plate 222 provided along the corner of the refracting portion 210 so as to prevent the light generated by the light emitting element 221 from being transmitted to the side surface of the refracting portion 210.

The heat radiating plate 222 is provided at each corner of the refracting portion 210, is formed so as to have a channel-type cross-sectional structure, and accommodates the end portions of the corners of the refracting portion 210 inside. At this time, the heat sink 222 is divided into a first heat sink 222a in which the light emitting element 221 is provided and a second heat sink 222b in which the light emitting element 221 is not provided.

Both the first heat radiating plate 222a and the second heat radiating plate 222b have a channel-shaped cross section and are formed in the same shape so as to accommodate the corners of the refracting portion 210, but only inside the first heat radiating plate 222a. There is a difference in that the light emitting element 221 is provided. When the refracting portion 210 is formed in the form of a square plate material, a first heat radiating plate 222a is provided at any one of the four corners, and a second heat radiating plate 222b is provided at each of the remaining three corners.

Since the first heat sink 222a and the second heat sink 222b are made of a metal material and have high thermal conductivity, the heat generated by the light emitting element 221 can be effectively discharged and the light reflectance is high. Therefore, it is possible to prevent the light generated by the light emitting element 221 from being transmitted to the outside through the side surface of the refracting portion 210.

The first light emitting element 221a and the second light emitting element 221b are alternately provided inside the first heat radiating plate 222a, and the first heat radiating plate 222a provided with the light emitting element 221 in this way is placed on one side corner of the refracting portion 210. By providing the light, green and / or red light can be transmitted from one side corner of the refracting portion 210.

When the light emitting element 221 is provided inside the first heat radiating plate 222a, the center of these light emitting elements 221 and the center of the refracting portion 210 formed by laminating the first plate 211 and the second plate 212 are aligned with each other. Is preferable. By matching the heights of the center of the light emitting element 221 and the refracting portion 210 in this way, the light generated by the light emitting element 221 is irradiated to the inside of the refracting portion 210 to the maximum extent.

On the other hand, since the electric circuit of the light emitting element 221 is exposed as it is and is vulnerable to external humidity, the light emitting element 221 is provided inside the first heat radiating plate 222a, and then the transparent resin 223 is filled to form the light emitting element 221. It is preferable to seal it. In addition to this, by applying the resin adhesive 224 to the contact surface between the end portion of the first heat radiating plate 222a and the refracting portion 210, the first heat radiating plate 222a and the refracting portion 210 are joined, and at the same time, external moisture is more clearly removed. It can be blocked.

The reflector 230 has a configuration capable of reflecting light, and may be provided in the form of a reflective film, for example, and may be attached to the lower surface of the refracting portion 210.

The pedestrian crossing signal display system using the pedestrian crossing block provided as described above uses a pedestrian crossing signal light that lights the same color as the pedestrian crossing signal light, so that pedestrians using smartphones can use the pedestrian crossing signal light. It has the effect of preventing accidents by being able to recognize the current pedestrian crossing signal and select walking or stopping without looking.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, a person having ordinary knowledge in the technical field to which the present invention belongs does not change the technical idea or essential features of the present invention. Can be understood to be implemented in another specific form.

Therefore, it should be understood that the examples described above are exemplary in all respects and are not limiting. The scope of the present invention appears in the claims described later from the detailed description above, and the meaning and scope of the claims and all modifications or modified forms derived from the concept of equality thereof are included in the scope of the present invention. Must be interpreted as included.

10: Luminous Braille block
100: Block cover 110: Upper case
111: Base part 112: Protruding part
120: Lower case 200: Light emitting module
210: Refractive part 211: First plate
212: Second plate 213: Light guide pattern
214: Scattering pattern 220: Light emitting part
221: Light emitting element 221a: First light emitting element
221b: Second light emitting element 222: Heat dissipation plate
223: Transparent resin 224: Resin adhesive
230: Reflector 300: Shading plate
310: Through hole 20: Sensing part
21: 1st sensor 22: 2nd sensor
30: Control unit 31: Signal transmission line
40: Pedestrian crossing 50: Signal light
51: Green traffic light 52: Red traffic light
53: 1st electric wire 54: 2nd electric wire

Claims (4)

A block cover having a plurality of light-transmitting protrusions formed on the upper surface, and one or two of green light and red light attached to the inside of the block cover. A light emitting module that transmits light so that the protrusion represents one of green, red, and yellow colors, and a flat plate form of an opaque material that is inserted between the block cover and the light emitting module and cannot transmit light. It is configured to include a light-shielding plate formed of, and having a through hole having a shape corresponding to the protrusion shape of the block cover. Luminous Braille block representing the same hue;
A sensing unit that senses whether or not a current flows through the electric wire for lighting the green signal of the pedestrian crossing signal light and the electric wire for lighting the red signal; and the current sensed by the sensing unit is used. includes; said transverse to determine the current lighting state of the walkway lights, control unit for transmitting a lighting signal to the light-emitting Tactile
The sensing unit lights a first sensor that detects whether or not a current flows through a first electric wire that supplies power to light a green signal of the crosswalk signal light; and a red signal of the crosswalk signal light. Includes a second sensor that senses whether or not a current is flowing through the second wire that supplies power to make it
The control unit transmits a lighting signal so that a green signal is lit to the light emitting point block when a current is detected by the first sensor, and the control unit transmits a lighting signal when the current is detected by the second sensor. A lighting signal is transmitted so that a red signal is lit on the light emitting point block, and if neither of the first sensor and the second sensor detects a current, the yellow signal is blinked on the light emitting point block. A crosswalk signal display system that uses a light emitting Braille block, which is characterized by transmitting a lighting signal to the vehicle. The light emitting module
A flat plate-shaped refracting part formed of a material that transmits light with a plurality of light guide patterns engraved on the lower surface;
A light emitting unit provided on one side surface of the refracting portion and irradiating one or two of green light and red light into the inside of the refracting portion; and a light emitting portion provided on the lower surface of the refracting portion. Includes a reflector that reflects more illuminated light;
The light emitted by the light emitting unit, crosswalk signal display system using a light emitting raised block according to claim 1, characterized in that transmitted to the projection is scattered in the light guiding pattern. The light emitting unit
A plurality of first light emitting elements that generate green light alternately arranged along one side corner of the refracting portion; a plurality of second light emitting elements that generate red light; and the first light emitting element. Heat dissipation provided along the corners of the refracting portion so as to prevent the light generated by the light emitting element from being transmitted to the side surface of the refracting portion while releasing the heat generated by the element and the second light emitting element to the outside. A crosswalk signal display system using the light emitting Braille block according to claim 2 , wherein the board; The refracting portion is formed by laminating a first plate and a second plate on which an optical pattern is engraved on the lower surface of each.
The heat radiating plate is formed so as to have a channel-shaped cross section so as to wrap a part of the side surface and the upper and lower surfaces of the refracting portion.
The first light emitting element and the second light emitting element are provided in the central portion inside the heat sink.
3. The third aspect of the present invention is that the inside of the heat radiating plate provided with the first light emitting element and the second light emitting element is filled with a transparent resin to seal the first light emitting element and the second light emitting element. A pedestrian crossing signal display system using the light emitting Braille block described in.

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