KR100861798B1 - Led traffic signal lamp controled by module - Google Patents

Abstract

The present invention relates to a module-controlled LED traffic light, and more particularly, by separating the LED lamp by module to control the lighting for each module to turn on the LED lamps of other modules which do not have an abnormality when an error occurs in some modules. The present invention relates to a switchable module control LED traffic light.

According to the present invention, the module control LED traffic light includes a case having a light emitting part in front and a reflecting surface formed in the rear of the inside, and emitting light between the light emitting part and the reflecting surface. A plurality is installed in the case so that the plurality of LED lamps are arranged separated into a plurality of modules, characterized in that it comprises a controller for controlling the lighting of the LED lamp for each module.

LED, traffic light

Description

Module Controlled LED Traffic Light {LED TRAFFIC SIGNAL LAMP CONTROLED BY MODULE}

1 is a block diagram showing a module control LED traffic light in accordance with an embodiment of the present invention

Figure 2 is a plan view showing the arrangement of the LED lamp in the module control LED traffic light according to an embodiment of the present invention

3 is a plan view conceptually illustrating an arrangement of light emitting lenses in a module control LED traffic light according to an embodiment of the present invention;

4 is a cross-sectional view showing a typical LED traffic light

<Short description of the major reference symbols>

10 cases

     11 light emitting unit

          111 Light Guide Hall

                111a rear entrance

                111b forward exit

          112 Luminous Lens

     12 reflective surfaces

     13 shades

20a, 20b, 20c led lamp

30 control unit

40 detector

The present invention relates to a module-controlled LED traffic light, and more particularly, by separating the LED lamp by module to control the lighting for each module to turn on the LED lamps of other modules which do not have an abnormality when an error occurs in some modules. The present invention relates to a switchable module control LED traffic light.

Conventional traffic lights use color filters to collect the light of a white light bulb, which is a traffic light source, in a reflector and to show the standard index red, yellow, and cyan of the traffic light. However, such a conventional incandescent light bulb signal lamp uses a low-efficiency incandescent light bulb, so the power consumption is high, the life of the light bulb is short, at least once every six months to replace the maintenance and repair costs associated with replacing the light bulb. In addition, since the bulb has a characteristic of suddenly shutting down, planned maintenance is not possible, and there is a high social loss due to the concern of traffic safety accidents and the disturbance of traffic flow, and the light enters through the color filter under the strong summer sun. The light is reflected by the reflector and radiated outside the signal, which may cause the traffic light to be mistaken, which may cause an accident.

Recently, due to the above problems, researches and experiments on LED traffic lights using semiconductor LED lamps have been steadily made.

Figure 4 is a cross-sectional view of the LED traffic light according to the prior art, referring to the conventional LED traffic light is the outer case (1), the front plate (2), the back cover (3), the lens (4), LED lamp ( 5) and the reflector 8 is coupled.

However, in general LED traffic lights, LED lamps are configured so that LED lamps are installed directly on the light emitting part so that the LED lamps are turned on as a whole, so that when some of the LED lamps fail, the traffic lights cannot function as a whole. There is a disadvantage that the entire LED lamp must be replaced as well as the LED lamp.

In addition, the general LED traffic light has a disadvantage that the life of the traffic light is short, because the LED lamp is turned on as a whole, the number of times and the number of LED lamps are turned on.

The present invention was conceived by recognizing the above point is an object of the present invention is to separate the LED lamp by module to control the lighting by module to turn on the LED lamp of another module that is not abnormal when some modules are abnormal. By providing a module control LED traffic lights that can be switched not only to emergency switching, but also to replace only the LED lamp module that has an error.

In addition, an additional object of the present invention is to turn on only some modules of the LED lamp module, and when the life of the module ends, the LED lamp of another module can be turned on to extend the overall life of the traffic light. To provide a traffic light.

In order to achieve the above object, the module control LED traffic light according to the present invention includes a case in which a light emitting part is provided at the front and a reflective surface is formed at the rear of the inside, and the light emitting part and the light emitted from the rear are transmitted. A plurality of installation is provided inside the case to emit light between the reflective surface, LED lamps are arranged separated into a plurality of modules by a plurality, and a control unit for controlling the lighting of the LED lamp for each module do.

In addition, the module control LED traffic light according to the present invention, the sensing unit for detecting the voltage or current change of the power supplied to each of the LED lamp module further includes, the control unit is supplied to the module of the LED lamp When a change in the voltage or power of the power is detected by the sensing unit, it is characterized in that the control of the other LED lamp module that is not lit to be turned on.

In addition, the module-controlled LED traffic light according to the present invention, the light emitting portion, the light guide hole formed in front of the LED lamp so that the light emitted from the LED lamp is incident to the rear side entrance and from the LED lamp And a light emitting lens installed at an exit of the front side of the light guiding hole so that light emitted through the light guiding hole is transmitted and emitted toward the front of the case.

In addition, the module control LED traffic light according to the present invention is characterized in that the light guide hole is formed in a tapered shape that becomes smaller in diameter as it proceeds from the rear inlet to the front outlet.

In addition, the module control LED traffic light according to the present invention, characterized in that the LED lamp is selected and separated into modules so that the difference in brightness distribution between the modules of the LED lamp does not occur.

Hereinafter, with reference to the embodiment shown in the drawings will be described in more detail the module control LED traffic light according to the present invention.

1 is a block diagram showing the configuration of the module control LED traffic light according to an embodiment of the present invention, Figure 2 is a plan view showing the arrangement of the LED lamp in the module control LED traffic light according to an embodiment of the present invention 3 is a plan view conceptually illustrating an arrangement of light emitting lenses in a module control LED traffic light according to an embodiment of the present invention.

The module control LED traffic light according to the present invention can cope with emergencies by separating the LED lamps into several modules and controlling the lighting thereof so as to turn on and turn on the modules that have no abnormality when some modules are abnormal. After the module is turned on, the life of the traffic light can be extended by using another module when the life of the module has expired.

Referring to the drawings, the module control LED traffic light according to an embodiment of the present invention, including a case 10, LED lamps (20a, 20b, 20c), the control unit 30, and the sensing unit 40 It is composed.

The case 10 is to provide a space for accommodating other devices or components such as the LED lamps 20a, 20b, 20c, the controller 30, and the detector 40. In front of the case 10, light emitted from the LED lamps 20a, 20b, and 20c is emitted through the light emitting part 11 provided at the front of the case 10. In front of the case 10, a shade for blocking rain or sunlight is protruded forward. LED lamps 20a, 20b, and 20c are installed in the case 10, and the LED lamps 20a, 20b, and 20b are provided at the front side of the case 10 in front of the LED lamps 20a, 20b, and 20c. A pore portion 11 for passing through light emitted from 20c is formed. In general, since the LED lamps 20a, 20b, and 20c emit light in the form of point light sources, when light is directly emitted from the LED lamps 20a, 20b, and 20c, the LED lamps 20a, 20b, and 20c are separated from the light emitting portions unless a part is turned on. The functionality as a traffic light deteriorates. However, the present invention separates the LED lamps 20a, 20b, and 20c into several modules M1 to M4 to control lighting separately and only some modules are turned on from the LED lamps 20a, 20b, and 20c. Direct light is not desirable. Accordingly, the present invention provides a light emitting unit 11 for forming a light emitting surface having a uniform brightness as the light emitted from the LED lamp (20a, 20b, 20c) passes through the LED lamp (20a, 20b, 20c) Is formed in front of. The light emitting part 11 may be formed by installing a cover made of a transparent material and a color transparent material in front of the LED lamps 20a, 20b, and 20c. Meanwhile, an embodiment in which the light emitting part 11 is formed by the light guiding hole 111 and the light emitting lens 112 is shown in the drawing. Referring to the embodiment shown in the drawing, the light emitting unit 11 has a plurality of light guide holes 11 for collecting and passing the light emitted from the LED lamps (20a, 20b, 20c) in front of the case 10 The light emitting lens 112 is formed at the front side exit 111b of the light guiding hole 11 to emit light passing through the light guiding hole 111 in the form of a point light source. The light guiding hole 111 is to allow light emitted from the LED lamps 20a, 20b, and 20c to enter the rear inlet 111a and be collected and passed therein. In particular, the light guide hole 111 is formed in a tapered shape so that the diameter decreases as it proceeds from the rear side inlet 111a to the front side outlet 111b so that light incident to the rear side inlet 111a is collected well. A light emitting lens 112 is installed at the front exit 11b of the light guiding hole 111 so that the light passing through the light guiding hole 111 is transmitted through the light emitting lens 112 and is emitted forward. FIG. 3 illustrates an arrangement of the light emitting lenses 112 provided at the front entrance 111b of the light guiding hole 111. The light guiding hole 111 is evenly distributed on the circular surface as shown in FIG. It is preferable that the arrangement is made. The light emitting lens 112 is to allow light emitted from the LED lamps 20a, 20b, and 20c to pass through the light guide hole 111 to be transmitted to the front of the case 10. It is provided in the front side outlet 111b of 111. The light emitting lens 112 may be configured to be transparent so that the light passing through the light guide hole 111 may be refracted and diverged, and scattering particles, etc. may be scattered to increase the visibility of the light. It can be distributed and formed. On the other hand, at the rear side of the case 10 is a reflective surface 12 for emitting light emitted from the LED lamps 20a, 20b, 20c forward from the rear of the LED lamps (20a, 20b, 20c) Is formed. Several LED lamps 20a, 20b, and 20c are installed, and the reflecting surface 12 is formed to be concave to correspond to each of the LED lamps 20a, 20b, and 20c. It is preferable that the light emitted from each of them be configured to reflect forward as they are collected.

The LED lamps 20a, 20b, and 20c are emitted by receiving power from a predetermined power supply device, and lighting and brightness are controlled by the controller 30. The LED lamps 20a, 20b, and 20c are installed in the case 10 to emit light between the light guide hole 111 and the reflective surface 12. The light emitted from the LED lamps 20a, 20b, and 20c is partially irradiated forward and partially irradiated backward to be emitted by the reflecting surface 12, and is emitted forward toward the light guide hole 111 side. .

On the other hand, the present invention is characterized in that the LED lamp (20a, 20b, 20c) is separated into a plurality of modules (M1 to M4), each module (M1 to M4) is configured to control the lighting separately from other modules. do. That is, the present invention is characterized in that it is configured to respond to an emergency by lighting only the LED lamp belonging to some of the modules M1 to M4 and lighting the LED lamp belonging to another module when an error occurs in the module. For example, according to the present invention, the controller 30 lights only the LED lamp belonging to the module M1 to operate the signal lamp, but the LED M1 belonging to the module M1 causes an error in some or all of the modules M1. When the change of the current or voltage of the power supplied to the sensing unit 40 is detected by the operation of the module M1 is stopped and switched to the other modules (M2, M3, M4) of the module (M2, M3, M4) LED lamp lights up. Accordingly, the present invention can respond in case of emergency by turning on the other module when an error occurs in one module by turning on the LED lamp while switching the modules M1 to M4 as described above. In addition, the present invention enables the LED lamps 20a, 20b, and 20c to light up only the LED lamps sequentially for each module without turning on the LED lamps 20a, 20b, and 20c. As a result, the overall lifespan of the traffic lights can be extended. Meanwhile, in the modules M1 to M4 configured as described above, it is preferable that the LED lamps 20a, 20b, and 20c are separated from each other so that a difference in brightness does not occur between the modules M1 to M2. FIG. 2 illustrates an example in which the modules M1 to M4 of the LED lamps 20a, 20b, and 20c are arranged to have the same brightness as described above. In the drawing, the LED lamps 20a, 20b, and 20c are concentric. The LED lamps (M1 to M4) of the LED lamps are arranged on several annular rings forming the LED lamps belonging to each of the modules (M1 to M2), and separated into four modules having an angle of 90 degrees on each annular ring. It relates to an example configured so that the difference in brightness distribution between the light does not occur. Accordingly, the modules M1 to M4 are separated from each other but have the same pattern but different from each other so that the difference in brightness distribution is not generated over all the modules M1 to M4. On the other hand, the LED lamps (20a, 20b, 20c) arranged on the concentric annular ring as described above is increased in density toward the inside. Therefore, the LED lamps 20a, 20b, and 20c have LED lamps 20c arranged in the inner ring so that the LED lamps 20a arranged in the outer ring so as to irradiate light with an evenly distributed brightness despite a change in density. It is preferable to configure brighter than). That is, the LED lamps (20a, 20b, 20c) is preferably arranged so that the output is reduced as it proceeds from the outer ring to the inner ring. In the figure, an example is illustrated in which the LED lamps 20a, 20b, and 20c are configured to decrease in output while decreasing in size as they progress from the outer ring to the inner ring.

On the other hand, in the present invention, since light emitted from the LED lamps 20a, 20b, and 20c is evenly distributed and incident to the light guiding hole 111, even though an abnormality occurs in a part of the LED lamps 20a, 20b, and 20c, the light guide hole is generated. The brightness of the light emitted through the light emitting lens 112 through the 111 is evenly distributed. In addition, even if the LED lamps 20a, 20b, and 20c are partially turned on but not turned on, the brightness of the light emitted from the light emitting lens 112 does not greatly occur.

The controller 30 controls the lighting of the LED lamps 20a, 20b, and 20c for each module M1 to M4. In particular, the controller 30 may be configured to change the voltage or power of the power supplied to the LED lamp module (for example, M1) of the LED lamp that is not lit when the change of the power is detected by the sensing unit 40. By controlling the module (other modules except for M1) to be turned on, even if an abnormality occurs in the lit module M1, the entire function of the traffic light is not disturbed.

The sensing unit 40 is for detecting whether there is an error in the LED lamp belonging to the module of the LED lamp (for example, M1) that is lit, and the sensing is a voltage of the power supplied to the lit module M1. Or by detecting a change in current. That is, when an error occurs in the LED lamp belonging to the lit module M1 and the LED lamp is not lit, a change occurs in the current and voltage of the power supplied to the module M1. The sensing unit 40 detects a change in the current or voltage of the power, and the control unit 30 determines whether or not the abnormality of the lit module M1 from the change detected by the sensing unit 40. It controls the lighting of the LED lamp.

According to the above configuration, the module control LED traffic light according to the present invention separates the LED lamps for each module and controls the lighting for each module so as to turn on the LED lamps of other modules which do not have any abnormality when an error occurs in some modules. Not only can it be switched, but also has the advantage of replacing only the module of the LED lamp with an error.

In addition, the module control LED traffic light according to the present invention can light up only some of the modules by the configuration as described above and the LED lamp of the other module when the life of the module reaches the end, thereby extending the overall life of the traffic light It has the advantage of being able to

The module control LED traffic light described above and shown in the drawings is only one embodiment for implementing the present invention, and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the claims below, and the embodiments which have been improved and changed without departing from the gist of the present invention will be apparent to those skilled in the art. It will be regarded as belonging to the protection scope of the present invention.

Claims (5)

A light emitting part emitting light while transmitting the light emitted from the rear side is provided at the front and a case having a reflective surface formed at the rear of the inside, and a plurality of cases are installed inside the case to emit light between the light emitting unit and the reflective surface. Includes a plurality of LED lamps arranged separated into a plurality of modules, and a control unit for controlling the lighting of the LED lamp for each module, The light emitting unit may include a plurality of light guide holes formed in front of the LED lamp so that light emitted from the LED lamp passes through the rear inlet, and light emitted from the LED lamp and passed through the light guide hole passes through the case. The module control LED traffic light, characterized in that it comprises a light emitting lens installed at the front exit of the light guide hole to diverge forward. The method of claim 1, Further comprising a detector for detecting a voltage or current change of power supplied to each of the LED lamp module, The control unit controls the module control LED traffic, so that when a change in the voltage or power of the power supplied to the module of the LED lamp is lit by the sensing unit to turn on the module of the other LED lamp that is not lit Traffic Light. The method according to claim 1 or 2, The light guide hole is a module-controlled LED traffic light, characterized in that formed in a tapered shape that decreases in diameter as it proceeds from the rear inlet to the front outlet. The method according to claim 1 or 2, Module control LED traffic light, characterized in that the LED lamp is selected and separated into modules so that the brightness distribution difference of the light is not generated between the modules of the LED lamp. delete

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