KR102283564B1 - LED traffic signs with humidity control - Google Patents

Abstract

The present invention relates to an LED traffic sign capable of controlling humidity. More specifically, the present invention relates to an LED traffic sign capable of controlling humidity, which is able to install graphite between an LED unit and an embossing frame. In summer, the graphite absorbs heat generated in the LED unit, transfers the heat to the embossing frame, radiates the heat to the outside, and protects the traffic sign from high heat. In winter, the graphite receives a current supplied by a control unit, generates heat, protects the traffic sign from outer air such as snow and dew, and reduces the damage to and repair of the traffic sign. A second pattern is formed on a figure part of a light guide panel, thereby improving visibility. On one PC surface of a PC diffusion plate, a resin is laminated to improve the embossing functions, thereby preventing an inner static electricity from being generated and evenly spreading the light at the same time. In accordance with the temperature measured by a temperature sensor in the control unit, the graphite is heated. A humidity sensor in the control unit detects a certain humidity during the day, and determines the presence or absence of snow, rain, and fog, which are environmental conditions which are darker than the day, thereby turning on/off the LED unit. In ordinary times, the LED unit is turned on/off by an illuminance sensor in the control unit, thereby improving the efficiency of the traffic sign, and increasing the life and efficiency of the traffic sign accordingly.

Description

LED traffic signs with humidity control}

The present invention relates to an LED traffic sign capable of controlling humidity, and more particularly, by installing graphite between the LED unit and the embossing frame, the graphite in summer absorbs the heat generated by the LED unit and transmits it to the embossing frame to the outside. It radiates heat to protect the sign from high heat, and in winter, graphite receives the electric current supplied by the control unit to generate heat. The secondary pattern pattern is formed on the surface to improve visibility, and the resin is deposited on one side of the PC side of the PC diffusion plate to form an embossing function, which prevents the generation of internal static electricity and at the same time spreads the light evenly. Graphite is heated according to the measured temperature, and the humidity sensor of the control unit detects a certain humidity during the day and determines that there is snow, rain, and fog, which are relatively darker environmental conditions than during the day, and turns the LED ON/OFF, By turning on/off the LED unit by the illuminance sensor, the efficiency of the sign is improved, and thus the life and efficiency of the sign is improved.

In general, road traffic signs installed on roads display various visual information required for the safe movement of vehicles and pedestrians. There are many types of signs, such as indication signs for guiding how to use a road or direction, and caution signs for notifying cautions including road conditions.

Conventional road traffic signs are mainly installed on supports installed on the roadside or on supports installed horizontally at a predetermined height on the upper part of the road. Therefore, it is relatively easy to identify the content of the sign during the day when the surroundings are bright, but it is difficult to identify the content of the sign when it is dark, such as at night, and it is difficult to understand that the sign is installed from a distance, so it did not function properly as a sign.

Accordingly, a separate lighting device was installed to illuminate road traffic signs at night, but since this is a method of recognizing the contents of the sign through the reflected light of the lighting that illuminates the entire surface of the sign, the range of improved identification is limited to a narrow angle. The higher the lighting intensity, the higher the recognition of the sign itself, but there was a problem in that the content discrimination was lowered due to the reflected light.

In order to solve this problem, a road traffic sign in which a plurality of LEDs are arranged in the form of a pattern for displaying predetermined information has been proposed. This has the advantage of improving the visibility of the sign by using the LED, the visible range is wide and the design is clearly displayed even from a long distance.

However, there was a problem in that the circuit board with a plurality of LEDs attached to it did not meet the number of expansions generated according to the outdoor environmental conditions (temperature, rain, snow, etc.) as it was combined with the general signboard embossing frame, causing the circuit board to be damaged.

In addition, in summer, due to the temperature rise generated by the LED, the inside of the road traffic sign is heated due to the change in the direction and lifespan of the LED of the road traffic sign, which causes a breakdown in circuit boards, etc. There was a problem that caused the LED and circuit board failure of road traffic signs and dew condensation.

In addition, even during the daytime, the outdoor illuminance falls depending on the outdoor environmental conditions (temperature, rain, snow, etc.), so that there is a problem that the driver does not recognize the road traffic sign, and an accident may occur.

Republic of Korea Patent Publication No. 1302606

The present invention has been devised to solve the above conventional problems,

By installing graphite between the LED unit and the embossing frame, graphite in summer absorbs heat generated by the LED unit and transmits it to the embossing frame to radiate heat to the outside to protect the sign from high heat, and graphite in winter is supplied by the control unit. Because it receives electric current and heats up, it protects the sign from external air such as snow and dew, reduces damage and repair of the sign, and improves visibility by forming a secondary pattern on the figure part of the light guide plate, and the PC of the PC diffuser plate Resin is deposited on one side to form an embossing function, which prevents the generation of internal static electricity and at the same time spreads light evenly. By detecting humidity and judging that there is snow, rain, and fog, which are environmental conditions that are relatively darker than during the day, the LED part is turned on/off. An object of the present invention is to provide an LED traffic sign that can control the humidity and increase the life and efficiency of the sign.

In order to achieve the above object, the present invention is an LED traffic sign capable of controlling humidity,

an embossing frame manufactured according to the shape of the traffic sign;

an LED unit installed on the front edge of the embossing frame to irradiate light;

Graphite installed between the LED unit and the embossing frame to radiate heat or heat according to the season;

a light guide plate installed on the front surface of the LED unit, a pattern is formed on one surface to match the cover, and the surface of the pattern and the base surface are cut in different patterns;

a PC diffusion plate 50 installed on the front surface of the light guide plate to prevent static electricity generation and diffuse the light irradiated from the LED, and resin is laminated on one surface of the PC to form an embossing function;

a reflection plate installed on the rear surface of the light guide plate, having the same pattern as the light guide plate formed on one surface, and reflecting a portion of the light diffused from the PC diffusion plate back toward the light guide plate;

It is formed outside the edges of the embossing frame, the light guide plate, the PC diffusion plate, and the reflector, and the embossing frame, the light guide plate, the PC diffusion plate, and the reflector are fixed in a state in which the light guide plate, the PC diffusion plate, and the reflector are stacked on the embossing frame. ;

A through hole formed through the same edge of the light guide plate and the reflecting plate to exchange air between the embossing frame and the reflecting plate and the air between the light guide plate and the PC diffusion plate to control atmospheric pressure and humidity; characterized in that it comprises a It relates to an LED traffic sign that can control humidity.

In addition, the graphite of the present invention is formed along the LED part and is in contact with the LED part and the embossing frame,

The graphite is tangential to the control unit installed inside the embossing frame, and the control unit transmits the current supplied from the outside to the graphite to heat the graphite,

The graphite absorbs heat generated in the LED unit and then transfers to the embossing frame to dissipate heat to the outside. It relates to an LED traffic sign capable of controlling humidity.

In addition, the retroreflective paper is attached to the front surface of the PC diffusion plate of the present invention, and an EC film is further attached to the front surface of the retroreflective paper. It relates to an LED traffic sign capable of controlling humidity.

In addition, the control unit of the present invention relates to a humidity control LED traffic sign comprising a microcontroller, a power supply unit, an output unit, a temperature sensor, a humidity sensor, and an illuminance sensor.

In addition, the extruded frame of the present invention is formed with a coupling groove to be coupled to the outside of the edge in a state in which the embossing frame, the light guide plate, the PC diffusion plate, and the reflecting plate are stacked, and the extruded frame has an edge according to the shape of an LED traffic sign that can control humidity. A plurality of bracket fixes are formed so as to be coupled to the it's about

As seen above, the humidity control LED traffic sign of the present invention has graphite installed between the LED unit and the embossing frame, so that the graphite in summer absorbs heat generated from the LED unit and transmits it to the embossing frame to the outside. It radiates heat to protect the sign from high heat, and in winter, graphite receives the electric current supplied by the control unit to generate heat. The secondary pattern pattern is formed on the surface to improve visibility, and the resin is deposited on one side of the PC side of the PC diffusion plate to form an embossing function, which prevents the generation of internal static electricity and at the same time spreads the light evenly. Graphite is heated according to the measured temperature, and the humidity sensor of the control unit detects a certain humidity during the day and determines that there is snow, rain, and fog, which are relatively darker environmental conditions than during the day, and turns the LED ON/OFF, By turning the LED unit ON/OFF by the illuminance sensor, the efficiency of the sign is improved, thereby increasing the life and efficiency of the sign.

1 is a front view showing a traffic sign according to an embodiment of the present invention,
2 is a rear view showing a traffic sign according to an embodiment of the present invention;
3 is an exploded perspective view showing a front traffic sign according to an embodiment of the present invention;
4 is an exploded perspective view showing a rear traffic sign according to an embodiment of the present invention;
5 is an organizational chart showing a control unit according to an embodiment of the present invention;
6 is an exploded perspective view showing an extrusion frame and a bracket fix according to an embodiment of the present invention;
7 is a front view showing graphite according to an embodiment of the present invention;
8 is a front view illustrating a through hole according to an embodiment of the present invention.

The present invention having such characteristics may be more clearly described through preferred embodiments thereof.

Before describing various embodiments of the present invention in detail with reference to the accompanying drawings, it will be understood that the application is not limited to the details of the construction and arrangement of components described in the following detailed description or shown in the drawings. will be. The invention is capable of being embodied and practiced in other embodiments and of being carried out in various ways. Also, device or element orientation (eg "front", "back", "up", "down", "top", "bottom") The expressions and predicates used herein with respect to terms such as ", "left", "right", "lateral", etc. are used merely to simplify the description of the invention, and the associated apparatus Or it will be appreciated that it does not simply indicate or imply that an element must have a particular orientation. Also, terms such as “first” and “second” are used in this application and the appended claims for the purpose of description and are not intended to indicate or imply relative importance or spirit.

Therefore, the configuration shown in the embodiments and drawings described in the present specification is only the most preferred embodiment of the present invention and does not represent all of the technical spirit of the present invention, so at the time of the present application, various It should be understood that there may be equivalents and variations.

Figure 1 is a front view showing a traffic sign according to an embodiment of the present invention, Figure 2 is a rear view showing a traffic sign according to an embodiment of the present invention, Figure 3 is front traffic according to an embodiment of the present invention An exploded perspective view showing a sign, Figure 4 is an exploded perspective view showing a rear traffic sign according to an embodiment of the present invention, Figure 5 is an organizational chart showing a control unit according to an embodiment of the present invention, Figure 6 is of the present invention An exploded perspective view showing an extrusion frame and a bracket fix according to an embodiment, FIG. 7 is a front view showing graphite according to an embodiment of the present invention, and FIG. 8 is a front view showing a through hole according to an embodiment of the present invention .

As shown in Figures 1 to 8, the humidity control LED traffic sign 100 of the present invention is an embossing frame 10 manufactured according to the shape of the traffic sign 100; an LED unit 20 installed on the front edge of the embossing frame 10 to irradiate light; Graphite 30 installed between the LED unit 20 and the embossing frame 10 to radiate heat or heat according to the season; a light guide plate 40 installed on the front surface of the LED unit 20, a pattern is formed on one surface to match the cover, and the surface of the pattern and the base surface are cut in different patterns; a PC diffusion plate 50 installed on the front surface of the light guide plate 40 to prevent static electricity generation and diffuse the light irradiated from the LED unit 20, and resin is laminated on one surface of the PC to form an embossing function; The light guide plate 40 is installed on the rear surface of the light guide plate 40, and the same pattern as the light guide plate 40 is formed on one surface. a reflector 60 that reflects the light of; The embossing frame 10, the light guide plate 40, the PC diffusion plate 50, and the reflection plate 60 are formed outside the edges, and the embossing frame 10 includes the light guide plate 40, the PC diffusion plate 50, and the reflection plate. (60) an extrusion frame 70 for fixing the embossing frame 10, the light guide plate 40, the PC diffusion plate 50, and the reflecting plate 60 in a stacked state; a control unit 80; It is formed through the same edge of the light guide plate 40 and the reflection plate 60 to exchange air between the embossing frame 10 and the reflection plate 60 with the air between the light guide plate 40 and the PC diffusion plate 50. It is composed of a through hole (90) for controlling atmospheric pressure and humidity.

As shown in Figs. 2 to 4, the embossing frame 10 is formed of a metal material and is formed in an arbitrary cover shape, and the embossing frame 10 is pentagonal, triangular, rectangular, or circular depending on the use of the cover. It can be manufactured in various forms.

Here, a pair of jannel bars 11 are vertically or horizontally coupled to the rear surface of the embossing frame 10 so as to be connected to a pillar installed on a road or sidewalk, and the rear side of the embossing frame 10 is supplied from the outside. An electric unit 12 for converting current from DC to AC or AC to DC is attached, and the electric unit 12 is connected to the inside of the traffic sign 100 to supply power.

The LED unit 20 is attached to the front and rear of the LED 21 and the LED 21 operating in a single color or multi-color, as shown in FIGS. 3 to 5 , and serves as a heater sink of the LED 21 . Consists of an aluminum bar 22 that does, the LED 21 is operated by a signal from the control unit 80 to irradiate light.

Here, the LED unit 20 is mounted on the aluminum bar 22 and inserted into the extrusion frame 70, and irradiates light toward the light guide plate 40 and the PC diffusion plate 50 to improve visibility at night. and, thereby, can clearly recognize the sign.

As shown in FIGS. 3 to 5 and 7, the graphite 30 is installed inside the embossing frame 10 to radiate heat or radiate heat (graphite, also called graphite), and at this time, the graphite 30 ) is called a heating film.

Here, the graphite 30 is formed like a band along the LED unit 20, and is formed to contact the LED unit 20 and the embossing frame 10 at the same time to absorb heat generated by the LED unit 20 in summer. It is transferred to the rear embossing frame 10 to radiate heat to the outside. At this time, as shown in FIG. 7 , the graphite 30 for heat dissipation serves to absorb the heat source and radiate heat to the outside when the temperature inside the sign becomes high because both ends are formed in a state of being interconnected in the form of a band.

In addition, the graphite 30 generates heat when it receives the current supplied by the control unit 80 , and protects the sign from outside air through the heat source of the heat. That is, when snow or the like is accumulated on the sign, the snow melts through heat to secure visibility of the sign.

And, in the graphite 30 for heat generation, as shown in FIG. 7 , in a state in which both ends of the graphite 30 are spaced apart from each other, wires connected to the control unit 80 are respectively connected to both ends of the graphite 30 , and the current transmitted from the control unit 30 . When the temperature inside the sign is lowered because it is heated by

As shown in FIGS. 4 and 5, the control unit 80 is configured to include a microcontroller, a temperature sensor, a humidity sensor, an illuminance sensor, a power supply unit, and an output unit, and the temperature sensed by the temperature sensor is a set temperature difference According to the control, the current is supplied to the output unit. At this time, the control unit 80 is connected to the graphite 30 or the heating film by an electric wire, and the current supplied from the control unit 80 is transmitted.

Here, the temperature sensor, the humidity sensor, and the illuminance sensor are installed inside the LED traffic sign 100 capable of humidity control, and the temperature value measured by the temperature sensor is transmitted to the control unit 80, and the control unit 80 A current is supplied to the graphite 30 according to the temperature value set in to generate heat.

And, the controller 80 is connected to a humidity sensor and an illuminance sensor (GPS, etc.) for detecting external humidity and illuminance, and the LED unit 20 controlled through the control signal of the controller 80, the LED lamp unit is connected do. At this time, the control unit 80 is connected to an external power source to drive the lower part through the power of the external power source.

The humidity sensor turns on/off the LED unit 20 when the humidity is above a certain humidity detection level to operate in snow, rain, and fog. The control unit 80 automatically turns on the LED unit 20 through the control unit 80, and when the illuminance exceeds a certain level, the control unit 80 automatically turns the LED unit 20 OFF.

As shown in FIGS. 3 to 4, the light guide plate 40 is installed on the front surface of the LED unit 20, and a pattern is formed on one surface to match the cover, and the surface is formed with the pattern and the base surface in different patterns. are cut

Here, the light guide plate 40 is formed of a transparent material and is formed along the shape of the embossing frame 10, and a pattern is engraved on the front surface of the light guide plate 40 according to the use of a cover (not shown). The pattern is formed in a shape and direction different from the pattern direction engraved on the front surface of the light guide plate 40 to increase the clarity of the pattern. That is, the light guide plate 40 is formed differently on the front surface of the light guide plate 40 in a way that the primary pattern and the secondary figure pattern are cut.

On the other hand, a reflective sheet (not shown) is attached to the rear surface of the light guide plate 40 to prevent the light of the LED unit 20 from being irradiated to the rear of the embossing frame 10 .

As shown in FIGS. 3 to 4, the PC diffusion plate 50 is made of a polycarbonate material, and resin is laminated on one surface of the PC to form an embossing function, and is installed on the front surface of the light guide plate 40 A portion of the light irradiated from the LED unit 20 is reflected back toward the light guide plate 40 so that the light can be evenly irradiated to the outside from the entire light guide plate 40 .

Here, a retroreflective paper 51 is attached to the front surface of the PC diffusion plate 50 , and an EC film 52 is further attached to the front surface of the retroreflective paper 51 .

As shown in FIGS. 1 and 3 to 4, the reflecting plate 60 is installed on the rear surface of the light guide plate 40, and on one surface of the reflecting plate 60, a portion of the double pattern of the light guide plate 40 and an EC film ( 52) is formed, and a portion of the light diffused from the PC diffusion plate 50 is sent back to the light guide plate 40, and the light from the light guide plate 40 is reflected.

The extruded frame 70 is, as shown in FIGS. 1 to 4 and 6 to 7 , the embossing frame 10 , the light guide plate 40 , the PC diffusion plate 50 , and the reflective plate 60 on the outside of the edge. The embossing frame 10, the light guide plate 40, the PC diffusion plate 50, and the reflection plate are formed in a state in which the light guide plate 40, the PC diffusion plate 50, and the reflection plate 60 are laminated on the embossing frame 10. (60) is fixed.

" 형태로 형성되어 중앙부에 결합홈(74)이 형성되는 것이다. Here, after the light guide plate 40, the PC diffusion plate 50, and the reflection plate 60 are stacked, the outer edge is coupled to the coupling groove 74 formed inside the extrusion frame 70, and the embossing frame 10 ), and the extrusion frame 70 is "

It is formed in the shape of ", the coupling groove 74 is formed in the central part.

And, the rubber pad 72 to seal the gap between the embossing frame 10, the light guide plate 40, the PC diffusion plate 50, and the reflection plate 60 that are laminated and combined inside the coupling groove 74. is further formed.

In addition, after the laminated embossing frame 10, light guide plate 40, PC diffusion plate 50, and reflector plate 60 are combined by the extrusion frame 70, fixing members such as bolts and pieces from the outside are extruded frame The embossing frame 10 , the light guide plate 40 , the PC diffusion plate 50 , and the reflection plate 60 that are laminated while penetrating through one surface of 70 are also penetrated and fixed.

In addition, a plurality of bracket fixes 71 are formed in the extrusion frame 70 to be coupled to the edge according to the shape of the LED traffic sign 100 capable of humidity control, and the plurality of bracket fixes 71 are separated and coupled. In the structure, the waterproof pad 73 is formed between the extrusion frame 70 and the bracket fix 71, respectively. That is, a separate bracket fix 71 is formed for each corner of the traffic sign 100 to connect the bent portions.

As shown in FIG. 8 , the through hole 90 is formed through the edges of the light guide plate 40 and the reflection plate 60 , and the through hole 90 is at the edge of the light guide plate 40 and the reflection plate 60 . One or more are formed through the same location.

Here, the role of the through hole 90 is to mutually exchange the air between the embossing frame 10 and the reflecting plate 60 and the air between the light guide plate 40 and the PC diffusion plate 50, so that the LED traffic sign (100) It is possible to control the air pressure and humidity in the interior and at the same time to exchange the temperature to prevent dew condensation.

10: embossing frame 11: jannel bar
12: electric part
20: LED part 21: LED
22: aluminum bar
30: graphite 40: light guide plate
50: PC diffusion plate 51: retroreflective paper
52: EC film
60: reflector
70: extrusion frame 71: bracket fix
72: rubber pad 73: waterproof pad
74: coupling groove
80: control unit 90: through hole
100: traffic sign

Claims (5)

In the LED traffic sign 100 that can control humidity,
an embossing frame 10 manufactured according to the shape of the traffic sign 100;
an LED unit 20 installed on the front edge of the embossing frame 10 to irradiate light;
Graphite 30 installed between the LED unit 20 and the embossing frame 10 to radiate heat or heat according to the season;
a light guide plate 40 installed on the front surface of the LED unit 20, a pattern is formed on one surface to match the cover, and the surface of the pattern and the base surface are cut in different patterns;
a PC diffusion plate 50 installed on the front surface of the light guide plate 40 to prevent static electricity generation and diffuse the light irradiated from the LED unit 20, and resin is laminated on one surface of the PC to form an embossing function;
It is installed on the rear surface of the light guide plate 40, the same pattern as the light guide plate 40 is formed on one surface, and a part of the light diffused from the PC diffusion plate 50 is sent back to the light guide plate 40 side. a reflective plate 60 that reflects light;
The embossing frame 10, the light guide plate 40, the PC diffusion plate 50, and the reflection plate 60 are formed outside the edges, and the embossing frame 10 includes the light guide plate 40, the PC diffusion plate 50, and the reflection plate. (60) an extrusion frame 70 for fixing the embossing frame 10, the light guide plate 40, the PC diffusion plate 50, and the reflecting plate 60 in a stacked state;
It is formed through the same edge of the light guide plate 40 and the reflection plate 60 to exchange the air between the embossing frame 10 and the reflection plate 60 with the air between the light guide plate 40 and the PC diffusion plate 50. Through-hole (90) for controlling atmospheric pressure and humidity; is configured to include,
The graphite 30 is formed along the LED unit 20 and is in contact with the LED unit 20 and the embossing frame 10 ,
The graphite 30 is tangent to the control unit 80 installed inside the embossing frame 10, and the control unit 80 transmits the current supplied from the outside to the graphite 30 to heat the graphite 30, ,
The graphite 30 absorbs heat generated by the LED unit 20 and then transmits it to the embossing frame 10 to radiate heat to the outside.
The method of claim 1,
A retroreflective paper (51) is attached to the front of the PC diffusion plate (50), and an EC film (52) is further attached to the front of the retroreflective paper (51).
The method of claim 1,
The control unit 80 is a humidity control LED traffic sign, characterized in that it comprises a microcontroller, a power supply unit, an output unit, a temperature sensor, a humidity sensor, and an illuminance sensor.
The method of claim 1,
The extruded frame 70 has an embossing frame 10, a light guide plate 40, a PC diffusion plate 50, and a reflective plate 60, a coupling groove 74 is formed so as to be coupled to the outside of the edge in a stacked state, and the extrusion The frame 70 is formed with a plurality of bracket fixes 71 to be coupled to the edge according to the shape of the LED traffic sign 100 capable of humidity control, and the bracket fix 71 combines a plurality of extruded frames 70 . An LED traffic sign capable of humidity control, characterized in that a waterproof pad (73) is formed between the extrusion frame (70) and the bracket fix (71) in a structure that allows the user to adjust the humidity. delete

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