KR20090129185A - Light emitting display device for guide line of crossroad - Google Patents

Abstract

PURPOSE: A light emitting display device for an intersection guide line is provided to secure reliability about the environment change using a plastic optical fiber as a light emitting element. CONSTITUTION: An optical source unit includes an optical source, an intersection traffic light control signal receiver, and an optical source control circuit. The optical source control circuit controls the optical source according to the left turn control signal of the intersection traffic light. A linear light emitting unit(130) includes at least one plastic optical fiber. One end of the linear light emitting unit is adjacent to the optical source. The light inputted to one end of the linear light emitting unit is scattered through the plastic optical fiber. A lower support(110) is buried on the road at the intersection. A concave path is formed in the lower support. The linear light emitting unit is received in the concave path. A light transmitting plate(120) covers the concave path of the lower support.

Description

Light Emitting Display Device for Guide Line of Crossroad}

The present invention uses a flexible plastic optical fiber as a light emitter to install a left turn guide line embedded on the road surface, and in conjunction with the existing traffic control system crossroad guide line for controlling the light emitter that is a left turn guide line in response to the left turn signal A light emitting display device is provided.

In general, white paint is applied to the lanes of roads, and yellow paint is applied to the center lines, in which paints are mixed with plastic beads to reflect light.

However, since these plastic beads have a specific gravity smaller than the paint, they float on the surface of the paint, so they fall off easily and lose their function. When used for a certain time, the accumulated or painted lanes on the painted paint are worn out. Invisible, requiring frequent repainting.

In addition, it is common to mark the bottom of the intersection without using any markings or to use the reflective paint or the irregularities having the reflective function. However, when the reflective paint is used, the above problems are the same. Since it is difficult to identify the lane, there is a problem that an accident may invade the center line when turning left or right.

Accordingly, an object of the present invention is to prevent the traffic accident by embedding the light emitter on the road surface of the intersection in the form of a left turn guide line of the intersection to prevent traffic accidents, and in conjunction with the existing traffic control system, the left turn guide light emitter It is to provide a cross-section guidance line light emitting display device that can easily distinguish the traffic signal by turning on.

An intersection guidance line light emitting display device according to the present invention includes a light source unit including a light source, an intersection traffic light control signal receiver, and a control circuit interlocked with the traffic light control signal and controlling a light source to correspond to a left turn control signal of the traffic light. And a lower light-emitting unit including a light emitting portion including at least one plastic optical fiber disposed at one end adjacent to the light source and extending toward the other end and the light emitting portion, the inner surface having a recessed groove having a reflective surface and embedded in a road surface. And a light transmitting plate covering the recess of the lower support and transmitting the light emitted from the light emitting portion upward.

As described above, the present invention facilitates the identification of whether the driver can pass by controlling the light emitter to be turned on in accordance with the replacement of the traffic control signal in conjunction with the existing traffic control system of the intersection, flexible and strong corrosion resistance Since plastic optical fiber is used as a luminous body, it can secure reliability against environmental changes, can be fixed in the form of a left turn guide line, and can increase energy efficiency by irradiating a large area with a single or a few light sources.

In order to achieve the above object, an intersection guidance line light emitting display device according to an embodiment of the present invention is interlocked with a light source, an intersection traffic light control signal receiver, and the traffic light control signal, and controls a left turn control signal of the traffic light. A light source unit including a light source unit including a control circuit for controlling a light source to correspond to the light source and one end thereof disposed adjacent to the light source and extending toward the other end receives the pre-light emitting unit and the pre-light emitting unit, and an inner surface thereof is a reflective surface. And a lower support body having a recessed groove and covering the recess of the lower support and a light transmitting plate for transmitting the light emitted from the light emitting portion upward.

In addition, the intersection guide line light emitting display device of the present invention is characterized in that the at least one plastic optical fiber is surrounded by a transparent tube, the light source is characterized in that the LED (LED).

The light source control circuit of the intersection guidance line light emitting display device according to the present invention may turn on the light source when the left turn control signal of the traffic light is received by the traffic light control signal receiver at the intersection of the light source part and turn off the light source when the straight control signal is received. The light source may be controlled to flash at regular time intervals until the left turn control signal of the traffic light is received by the traffic light control signal receiver at the intersection of the light source and then the straight control signal is received.

An embodiment of an intersection guidance line light emitting display device according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of an intersection guide line light emitting display device according to an exemplary embodiment of the present invention.

When the intersection guide line light emitting display device 100 according to the present invention includes a light source unit, a pre-light emitting unit 130, a lower support 110, and a floodlight plate 120, the intersection guide line light emitting display device illustrated in FIG. 1 is illustrated. 100 is a cross-sectional view of one embodiment of a device operating in conjunction with an existing traffic signal control system.

First, the light source unit is not shown in FIG. 1, but one end of the pre-light emitting unit 130 is disposed adjacent to the light source, and the light emitted from the light source through the cross-section of the pre-light emitting unit 130 is incident and then selected. It is scattered and diverted toward the other end of the light portion 130.

The light source unit includes a light source, a traffic light control signal receiver, and a light source control circuit. The light source control circuit interworks with an intersection traffic light control signal and controls the light source to correspond to a left turn control signal of the traffic light.

For example, when the left turn signal "Turn On" signal of the traffic light is received by the intersection traffic light control signal receiver, the light source is turned on and the left turn signal "Turn Off" signal is received by the control signal receiver. Can be controlled to flash.

Alternatively, after the left turn signal "Turn On" signal of the traffic light is received by the control signal receiver, the light source continues at regular time intervals until the left turn signal "Turn Off" signal is received by the control signal receiver. Can be controlled to blink.

The light source may use an LED (LED) light source that has a long life and low power consumption, thereby reducing maintenance and repair costs.

The pre-light emitting unit 130 includes at least one plastic optical fiber having one end disposed adjacent to the light source and extending toward the other end. Light incident on one end of the pre-light emitting unit 130 is scattered and diverged through the plastic optical fiber, and is transmitted to the other end along the axis, and functions as a light source.

The plastic optical fiber of the front light emitting unit 130 may be formed of a plurality of plastic optical fibers surrounded by a transparent tube, a plurality of fine irregularities are formed on one side of the plastic optical fiber in contact with the transparent tube to increase the scattering of light transmitted to the side By dispersing the light incident to one end of the along the optical fiber to increase the amount of radiation emitted to the side of the plastic optical fiber can be used as a light emitting body.

The plastic optical fiber refers to a non-quartz optical fiber, that is, a plastic resin such as PMMA resin as a fiber-shaped waveguide for the purpose of light transmission.

In other words, the plastic optical fiber is a fiber made by thinly elongating a transparent dielectric such as plastic, and passes light through the center portion thereof, and has a double cylindrical shape in which a cladding wraps around the central core of the optical fiber. .

When the light propagates through the optical fiber is briefly described, the refractive index of the clad, which is a blocking layer which prevents light from going out, is slightly smaller than the refractive index of the core, which is the core part passing through the light, so that the light incident on the core has a different refractive index. It propagates by repeating total reflection at the interface between the core and the clad. In addition, the outer surface of the cladding in order to protect from impact, the synthetic resin coating is formed in a single layer or a multi-layer, the total size except the coating layer is 100 to several hundred micrometers in diameter, the refractive index of the core portion is higher than the refractive index of the cladding light It is focused on this core part and proceeds without slipping out.

Since the plastic optical fiber is resistant to environmental changes such as impact, heat, and moisture, the plastic optical fiber can be designed to be embedded in a road surface, and it is useful because it does not have electrical shortcomings such as a short circuit.

The lower support 110 has a recessed surface having an inner surface thereof with a recessed surface and is embedded on a road surface, and the recessed portion 130 is accommodated in the recessed surface, and the floodlight plate 120 covers the recessed groove. The light emitted from the light emitting unit 130 is transmitted upward. Light emitted in the lower or lateral direction of the pre-light emitting unit 130 is reflected from the reflective surface and transmitted through the floodlight plate 120 to increase the roughness of the upper side of the lower support 110.

The cross-section guide line light emitting display device according to the present invention may be embedded in the ground in the form of a left turn guide line, and may function as a curved light emitter using a flexible plastic optical fiber, which is described in detail in the embodiment of FIG. 3. Explain.

FIG. 2 is a view illustrating a connection arrangement method of the pre-light emitting units 230a and 230b and the light sources 210a and 210b of the crossroad guidance line light emitting display device 200 according to the present invention. FIG. 2A illustrates a first method using an LED as a light source. 2B is a second embodiment using a HID lamp as a light source.

The first embodiment is a method of connecting and arranging the LED light source 210a to the pre-light emitting unit 230a. The optical lens 220 is disposed between the pre-light emitting unit 230a and the LED light source 210a. The optical lens 220 is a lens for condensing the light emitted from the LED light source 210a to adjust the thickness and the placement distance of the lens to maximize the condensing rate.

In the second embodiment, the HID lamp light source 210b is connected to the pre-light emitting unit 230b, and one end of the pre-light emitting unit 230b is disposed adjacent to the HID lamp light source 210b. In addition, a light outlet may be formed in the light source, and one end of the front light emitting unit may be disposed adjacent to the light outlet, and the light outlet may be attached to a transparent material through which the light is emitted from the HID lamp through the transparent body. It can be made incident on one side of.

3 is a layout view of an embodiment in which an intersection guidance line light emitting display device according to the present invention is disposed at a crossroad intersection.

According to the embodiment shown in FIG. 3, a left turn guidance line at a crossroad is shown using an intersection guidance line light emitting display device, and four intersection guidance line light emitting display devices are disposed adjacent to each other. In each intersection guide line light emitting display device, a light source blinks to correspond to a left turn control signal such as a traffic signal based on a driver.

That is, the left turn control signals of two traffic lights facing each other at the crossroad intersection are simultaneously received, and the two intersection guide line light emitting display devices receiving the left turn control signals of the traffic lights are simultaneously controlled.

For example, the method of controlling the light source to correspond to the left turn control signal of the traffic light includes controlling the light source to turn on when the left turn control signal of the traffic light is received by the traffic light control signal receiving unit at the intersection of the light source and the straight control signal. A method of controlling the light source to be turned off when received by the control signal receiver; and controlling the light source to blink at a predetermined time interval until a straight control signal is received after the left turn control signal of the traffic signal is received by the control signal receiver. There is a way.

Accordingly, the control circuit of the intersection guidance line light emitting display device interlocks with the traffic light control system driven based on the operator and turns on the left side of the traffic light of the traffic light installed above the driver's head, and is embedded on the road surface. Since the display device also lights up, it helps to identify traffic signals, and has an advantageous effect to secure visibility at night driving.

The embodiments described above are merely exemplary, and the scope of the present invention is indicated by the claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are the scope of the present invention. Should be interpreted as being included in.

1 is a cross-sectional view of an intersection guide line light emitting display device according to an exemplary embodiment of the present invention.

FIG. 2A illustrates a first embodiment of a method for arranging a connection between a light emitting unit and an LED light source of an intersection guidance line light emitting display device according to the present invention.

2B illustrates a second embodiment of a method for arranging a connection between a pre-light emitting unit and a HID lamp light source of an intersection guide line light emitting display device according to the present invention.

3 is a layout view of an intersection guidance line light emitting display device according to an embodiment of the present invention disposed at a crossroad intersection.

Claims (4)

A light source unit including a light source, an intersection traffic light control signal receiver, and a light source control circuit interlocked with the traffic light control signal and controlling the light source to correspond to a left turn control signal of the traffic light; A pre-light emitting portion having one end disposed adjacent to the light source and including at least one plastic optical fiber extending toward the other end; A lower supporter which accommodates the light emitting portion and has a recessed groove whose inner surface is a reflective surface; And And a light transmitting plate covering the recess of the lower support and transmitting the light emitted from the light emitting portion to an upper side thereof. The method of claim 1, And the light source is an LED. The method of claim 1, And at least one plastic optical fiber is surrounded by a transparent tube. The method of claim 1, The light source control circuit controls the light source to turn on when the left turn control signal of the traffic light is received by the traffic light control signal receiver at the intersection of the light source part, and to turn off the light source when the straight control signal is received, or the left turn control signal of the traffic light. And controlling the light source to blink at regular time intervals after being received by the traffic light control signal receiver at the intersection of the light source unit until a straight control signal is received.

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