KR102105648B1 - Eco-friendly safety signs - Google Patents

Abstract

The present invention relates to an eco-friendly safety sign which is installed at a place where the risks of an accident are high to provide safety. To this end, the present invention comprises: a case (10) at least having the same size and shape as that of the specifications of a guide to be noticed; a background sheet (20) which is attached to the front surface of the case (10), and has a color and a shape to stand out the meaning to be noticed; and a guide block (30) which is inserted into the case (10), and has the predetermined shape and color for a notice. Here, the guide block (30) has the enclosed inside to block infiltration of debris from the outside, and can turn on an artificial light from the inside towards the outside after receiving external power to be recognized at night. In addition, the guide block (30) widens a projection area in which the artificial light is projected in the guide shape and a reflection or absorption area of a natural light incident from the outside compared to a passing area through which the artificial light lighted on the inside is directly projected to the outside, thereby simultaneously increasing visibility and legibility at day and night.

Description

Eco-friendly safety signs

The present invention relates to a sign that is installed at a place where there is a high risk of accident to promote safety, and more specifically, a contour line of a predetermined interval to pass the light passing through the perforated film that passes the light of the LED in a dot matrix shape of equal intervals. By embedding a joint sheet that passes through the joint shape, it increases the projection area that is projected in a guide shape compared to the passing area where the artificial light emitted by the LED is directly emitted to the outside. The present invention relates to an eco-friendly safety sign board that greatly improves readability during the day and night as a result of widening the area of reflection or absorption of natural light incident from.

In general, a safety sign board is installed on the edge of a road or sidewalk to indicate the state of the road or to indicate the highest and lowest driving speeds of the road, so that the driver can safely find a destination to go.

For example, among traffic signs, the seagull sign is mainly installed in a section turning sharply on the road or a section in which the lane rapidly narrows, and functions to prevent the car from leaving the lane by drawing attention to the driver.

However, the seagull sign has only a function that is reflected by the headlights of the car, so it has the disadvantage that it cannot effectively prevent traffic accidents because it cannot secure visibility from the driver at night or on cloudy days.

Therefore, the LED was mounted inside the seagull sign, and the power was supplied from the battery charged by the solar panel to emit the sign itself.

In the case of such seagull signs, it is standardized with black letters or figures to inform on yellow, green, and white backgrounds.

That is, in the past, the base color film was composed of a retroreflective type, and the black letters or graphics to be announced were illuminated with LEDs from the inside to be visible even at night or on cloudy days.

However, since black absorbs light, the light is not projected to the outside, and as a result, the readability of the driver is reduced, and thus a traffic accident cannot be effectively prevented.

Recently, as a method to solve this problem, a black film of a letter or figure to be reported was applied as a black perforated film with a micro-perforation through which light passes.

Therefore, in the daytime, black appears relatively prominently by natural light, while white characters or figures appear by artificial light by LED at night.

However, assuming that the black normal film absorbs all the light, the visibility of the daytime is 100% and the visibility of the night is 0%. There is a problem.

In addition, as light passes through the hole of the perforated film, it is directly emitted to the outside, and as the emitted light diffuses from the outside and causes light leakage, characters or figures appear distorted or appear as lumps, thereby deteriorating readability.

In addition, since the perforated film is exposed to the outside, foreign matter such as fine dust or moisture penetrates into the hole and shortens the life of the light source and the electronic component.

Korean Registered Patent Publication No. 10-1313039

The present invention has been proposed to solve the above problems, and a guide block having a set shape and color to be notified is realized by lighting by LED, so that it can be recognized even at night, and the inside of the guide block is sealed. The goal is to provide an eco-friendly safety sign that can be implemented to ensure high life.

In addition, the present invention is to provide an eco-friendly safety sign that can expect excellent illumination and high energy efficiency with only a small amount of linear array LED by constructing a double light guide plate that scatters the light of the LED and uniformly distributes the scattered light. have.

In addition, according to the present invention, the artificial light by the LED is externally built by combining the perforated film that passes the light of the LED in an equally spaced dot matrix shape and a joint sheet that passes the light passing through the contour line at a predetermined interval. By increasing the projection area that is projected in a guide shape compared to the passing area that is directly emitted, it is possible to suppress the light leakage phenomenon due to intensive lighting, while increasing the area for reflecting or absorbing natural light incident from the outside. The aim is to provide eco-friendly safety signs that can be significantly improved.

In addition, the present invention, by configuring a solar panel, can operate without an external power source, thereby reducing maintenance costs, and by constructing a washing unit that removes foreign matter from the solar panel, it is eco-friendly to maintain excellent power generation efficiency at all times. The purpose is to provide a safety sign.

In addition, according to the present invention, it is possible to supply water required for washing by applying a unit for collecting rainwater and collecting fog, thereby reducing the overall cost of washing and reducing the number of labor required for construction by omitting external piping. The purpose is to provide an eco-friendly safety sign.

The present invention relates to a sign that is installed in a place where there is a high risk of accident to promote safety, at least a case having the same size and shape as the guide standard to be announced; A background sheet attached to the front side of the case and having a color and shape that stands out to inform; It is inserted into the case, and the guide block having a set shape and color to be informed is made, including, and the guide block is sealed inside so that the inflow of foreign matter from the outside is blocked, and external power is recognizable at night. When supplied, the artificial light is turned on from the inside to the outside, and the guide block reflects the natural light incident from the outside with the projection area projected in the shape of a guide in contrast to the passing area where the artificial light lit from the inside is directly emitted to the outside, or It is characterized by improving the visibility and readability at the same time by increasing the absorption area.

At this time, the guide block according to the present invention, an LED substrate that receives power from the outside and emits light; A reflective film disposed on the rear surface of the LED substrate and reflecting the emitted light forward; A first light guide plate disposed on the front surface of the LED substrate and having V grooves formed in a grid shape on the front surface so that light emitted and reflected are scattered toward the front side; A second light guide plate disposed on the front surface of the first light guide plate and diffused so that scattered light is uniformly distributed; A perforated film disposed on the front surface of the second light guide plate and passing the diffused light in an equally spaced dot matrix shape; A joint sheet disposed on the front surface of the perforated film and passing the passed light in a shape of a contour line of a predetermined interval; A transparent protective plate disposed on the front surface of the joint sheet and passing light from inside and outside; It is characterized in that it is composed of; an airtight member wrapped around the edge of the reflective film or the protective plate to seal the interior.

In addition, the perforated film and the joint sheet according to the present invention have the same color as the guide color, wherein the perforated film has a square or circular hole arranged continuously at predetermined equal intervals, and the joint sheet has a predetermined interval according to the shape. It is characterized in that the contour line grooves are continuously arranged.

In addition, the safety sign plate according to the present invention is a support for fixing the case to be suspended at a predetermined height; One or more photovoltaic panels mounted at an angle to the upper end of the support to generate power; It is characterized in that it further comprises a; a control module mounted on one side of the post, storing power generated from the photovoltaic panel, and controlling the power of the LED board according to a set sequence.

In addition, the control module according to the present invention is characterized in that a luminance sensor is installed to measure the ambient light so as to vary the brightness of the LED substrate in real time.

In addition, the safety sign plate according to the present invention, characterized in that it further comprises a washing unit for removing foreign matter on the surface by reciprocating the solar panel with the driving force of the water to be pushed.

In addition, the washing unit according to the present invention is built in the control module, a washing tank for storing a predetermined amount of water; A washing pump mounted on the washing tank and pumping water stored in the solar panel; A pair of washing frames disposed on both side edges of the solar panel; A washing roller that moves in rolling with the rim of the solar panel on the lower inner side of the washing frame; A connection pipe crossing a solar panel inside the upper end of the washing frame and connected to a washing pump and a hose; A forward / reverse nozzle that branches into two ends at the lower end of the connecting pipe and inclines downwardly in opposite directions from left to right to discharge high-pressure water; It characterized in that it is composed of; a brush for removing foreign matter interposed with the surface of the solar panel between the forward / reverse nozzle.

In addition, in the washing roller according to the present invention, the propulsion blades inclined at a predetermined angle in the center of the outer surface are arranged in a radial direction to convert the water pressure of the forward / reverse nozzle contacting the washing frame into a rotational force in a direction to move to promote propulsion. It is characterized by.

In addition, the safety sign plate according to the present invention, it is characterized in that it further comprises a fog collecting unit that collects rainwater and fog and stores it in a washing tank.

In addition, the fog collecting unit according to the present invention, one or more clamps to induce mounting on the upper end of the support; A connection plate horizontally fastened to one end of the clamp; A plurality of collecting panels formed with a mesh for collecting fog on one surface of the connecting plate; It is characterized in that it is arranged on the bottom of the collecting panel to collect the water droplets falling into the mist trap with rain water and deliver it to the washing tank.

First, according to the present invention, a guide block having a set shape and color to be advertised is realized by lighting by LED, so that the guide can be recognized even at night. It has an effect.

Second, according to the present invention, by constructing a double light guide plate that scatters the light of the LED and uniformly distributes the scattered light, an excellent illuminance and high energy efficiency can be expected only with a small amount of the linear array LED.

Third, according to the present invention, the artificial light by the LED is externally built by combining the perforated film which passes the light of the LED in a dot matrix shape of equal intervals and the joint sheet that passes the light passing through the contour line of predetermined intervals. By increasing the projection area that is projected in a guide shape compared to the passing area that is directly emitted, it is possible to suppress the light leakage phenomenon due to intensive lighting, while increasing the area for reflecting or absorbing natural light incident from the outside. There is an effect that can be greatly improved.

Fourth, according to the present invention, by constructing a solar panel, it is possible to operate without an external power source, thereby reducing maintenance costs, and by constructing a washing unit that removes foreign matter from the solar panel, it is possible to maintain excellent power generation efficiency in an eco-friendly environment at all times. It has an effect.

Fifth, according to the present invention, it is possible to supply water required for washing by applying a unit for collecting rainwater and collecting fog, thereby reducing the overall cost of washing and reducing the number of labor required for construction by omitting external piping. It has an effect.

In addition to the above-described effects, the concrete effects of the present invention will be described together while describing the specific matters for carrying out the invention.

1 is a reference picture showing a main part of a safety sign according to an embodiment.
FIG. 2 is an exploded view showing the safety sign according to FIG. 1 separately.
3 is an exploded view showing the main part of the safety sign according to FIG. 2 separately.
4 to 6 are enlarged views independently showing the main parts of FIG. 3.
7 is a perspective view showing the safety sign according to another embodiment as a whole.
8 to 12 is a configuration diagram showing a modification of the safety sign plate according to FIG.

Hereinafter, various embodiments of this document will be described with reference to the accompanying drawings. However, this is not intended to limit the techniques described in this document to specific embodiments, and it should be understood that it includes various modifications, equivalents, and / or alternatives of embodiments of the document. In connection with the description of the drawings, similar reference numerals may be used for similar components.

In addition, expressions such as "first," "second," and the like used in this document may modify various components, regardless of order and / or importance, to distinguish one component from another component. It is used but does not limit the components. For example, the 'first part' and the 'second part' may indicate different parts regardless of order or importance. For example, the first component may be referred to as a second component without departing from the scope of rights described in this document, and similarly, the second component may also be referred to as a first component.

Also, the terms used in this document are only used to describe specific embodiments, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person skilled in the art described in this document. Among the terms used in this document, terms defined in the general dictionary may be interpreted as having the same or similar meaning in the context of the related art, and are ideally or excessively formal, unless explicitly defined in this document. Is not interpreted as In some cases, even terms defined in this document cannot be interpreted to exclude embodiments of the document.

One embodiment of the present invention relates to a sign that is installed in a place where there is a high risk of accidents to promote safety. As shown in FIG. 1, an environment-friendly environment comprising a case 10, a background sheet 20, and a guide block 30 as main components It is a safety sign.

The safety signboard of the present invention is limited to the illustrated seagull sign, but besides the gull sign, it can be used as a sign in various fields to inform information through a visual medium limited to a lighting ceremony.

First, the case 10 according to the present invention is a housing having the same size and shape as at least the guide standard to inform, as shown in FIGS. 1 and 2.

The case 10 is made of synthetic resin or aluminum or iron, and is divided into front and rear so as to be engaged with each other back and forth.

Here, the front case 10 is provided with a receiving groove 10a for inserting and mounting the guide block 30.

That is, the receiving groove 10a is formed in the same gull (<) shape as the guide block 30, and one surface of the front side of the guide block 30 is recessed to a depth coinciding with the front surface.

And the background sheet 20 according to the present invention is attached to the front of the case 10, as shown in Figures 1 and 2, and has a color and shape that stands out to inform.

The background sheet 20 has a yellow retroreflective function, and a reflection principle by a glass bead or a micro prism is applied.

That is, the background sheet 20 is preferably composed of 3M's scotch light that exhibits excellent retroreflective performance by applying the micro-prism principle.

Finally, the guide block 30 according to the present invention is inserted into the case 10 as shown in FIGS. 1 and 2, and has a set shape and color to inform.

The guide block 30 has a structure in which the inside is sealed to block the inflow of foreign matter from the outside.

Therefore, the penetration of foreign substances such as fine dust and moisture can be prevented, thereby preventing failure and increasing life.

Here, the guide block 30 receives external power so that it can be recognized even at night, and lights artificial light from inside to outside.

3, the guide block 30 is a gull-shaped LED substrate 31, a reflective film 32, a 1/2 light guide plate 33, 34, a perforated film 35, a joint sheet 36, as shown in FIG. It is composed of a protective plate 37 and an airtight member 38.

In the LED substrate 31, a plurality of LEDs are arranged on one side of the substrate to emit light when supplied with power from the outside.

The reflective film 32 is disposed on the rear surface of the LED substrate 31 and serves to reflect light flowing out from the rear of the LED substrate 31 forward.

The first light guide plate 33 is disposed on the front surface of the LED substrate 31, and serves to scatter light emitted and reflected toward the front.

In the first light guide plate 33, the V groove 33a is formed in a lattice shape on the front surface as shown in FIG.

The second light guide plate 34 is disposed on the front surface of the first light guide plate 33 and serves to diffuse the scattered light uniformly distributed to the perforated film 35.

The perforated film 35 is disposed on the front surface of the second light guide plate 34, and serves to pass the diffused light in an equidistant dot matrix shape.

The perforated film 35 has a black color, and the angular or circular holes 35a are continuously arranged at predetermined equal intervals as shown in FIG. 5.

The joint sheet 36 is disposed on the front surface of the perforated film 35 and serves to pass the passed light in the shape of a contour line at a predetermined interval.

The joint sheet 36 has a black color, and the contour line grooves 36a at predetermined intervals are continuously arranged according to the shape of a chevron as shown in FIG. 6.

At this time, the joint sheet 36 may be manufactured by a process in which a black film 36c is coated on one surface of the transparent sheet 36b, and the black film 36c coated in a contour line is removed.

In addition, the joint sheet 36 may be produced by a process in which the black pigment 36d is printed in a contour line shape on one surface of the transparent sheet 36b.

The protective plate 37 is made of a transparent material through which light passes from inside and outside, and is disposed on the front surface of the joint sheet 36.

The protective plate 37 serves to block and protect the exposure of the joint sheets 36 to the first light guide plate 33 continuously disposed on the rear surface.

The airtight member 38 is a rubber packing wrapped around the rim of the reflective film 32 to the protective plate 37, and serves to assemble the inside in a closed state.

That is, in the guide block 30, when the perforated film 35 and the joint sheet 36 overlap each other and are viewed from the front, the circular holes 35a and the line grooves 36a are alternately arranged as shown in the enlarged portion of FIG. 1.

Therefore, the area absorbed by natural light in the daytime is relatively wide compared to the safety signboard made of only the existing perforated film, thereby improving visibility and readability.

Here, the artificial light reaching the perforated film 35 due to the lighting of the LED substrate 31 passes through only the circular hole 35a.

At this time, only a portion of the circular holes (35a) arranged in communication with the line groove (36a) has a straightness and passes through the protective plate (37) to be finally emitted to the outside.

Therefore, by properly lowering the amount of light emitted with excessive straightness compared to a safety sign board made of only the existing perforated film, light leakage phenomenon can be suppressed to improve readability.

In addition, since the black film 36c or black pigment 36d blocking the light passing through the circular hole 35a is made of a rib having a relatively thin width, only a part of the circular hole 35a is blocked, and thus a soft light like a lampshade. By intensively projecting in the shape of this joint sheet 36, it exhibits a luminance that satisfies visibility and readability.

Another embodiment of the present invention, the case 10 and the background sheet 20 and the guide block 30 of the above-described one embodiment, as shown in Figure 7 holding 40, solar panel 50 and control module 60 It is an environmentally friendly safety sign further comprising a.

First, the strut 40 according to the present invention is a structure that is built in a place to be installed as shown in FIG. 7 to fasten the case 10 at a predetermined height.

The post 40 is made of a cylindrical pipe having a set length, and the bottom of the pipe has a structure in which a flange that induces coupling with an anchor and a nut is integrally welded.

And the solar panel 50 according to the present invention is mounted to be inclined at a predetermined angle to the top of the support 40, as shown in Figure 7 to generate power.

That is, the solar panel 50 is a generator that supplies the power required for the LED substrate 31, and charges the power produced by the battery built in the control module 60.

The solar panel 50 may further include a tracking unit that changes posture along the sun to improve power generation efficiency.

Lastly, the control module 60 is mounted on one side of the support 40 as shown in FIG. 7 and is a housing incorporating a battery therein.

The control module 60 stores the power generated from the solar panel 50 in the battery, and regulates the power of the LED substrate 31.

Here, the control module 60 may be equipped with an illuminance sensor 65 for measuring ambient illuminance outside.

That is, the control module 60 changes the brightness of the LED substrate 31 in real time according to the illuminance input from the illuminance sensor 65.

For example, the LED substrate 31 may be turned on by detecting a darkening during the daytime depending on weather conditions in addition to a set time zone during which day and night are changed.

In addition, the brightness of the LED substrate 31 may be gradually increased according to a point of view changing from daytime to nighttime.

Here, when the ambient light at night increases rapidly, the brightness of the LED board 31 is adjusted to be lower than the measured light intensity so as not to disturb the driver's view by recognizing it as the headlight of a vehicle.

On the other hand, the safety sign plate according to the present invention may further include a washing unit 70 for removing foreign matter on the surface by reciprocating the solar panel 50 with the driving force of the water to be pushed as shown in FIG.

The washing unit 70 includes a washing tank 71, washing pump 72, washing frame 73, washing roller 74, connecting pipe 75, forward / reverse nozzle 76, 77, brush ( 78).

The washing tank 71 is a container for storing a predetermined amount of water, and is embedded inside the control module 60.

The washing pump 72 is mounted inside the control module 60 to press the water stored in the washing tank 71 to the solar panel 50.

The pair of washing frames 73 are respectively disposed outside the rims of both sides of the solar panel 50.

The washing roller 74 is mounted in plural on the lower inner side of the washing frame 73, and is engaged with the rim of the solar panel 50 to perform rolling motion.

The connection pipe 75 is mounted across the photovoltaic panel 50 inside the upper end of the washing frame 73, and the hose connected to the washing pump 72 is coupled to one end.

The forward / reverse nozzles 76 and 77 diverge into two ends at the lower end of the connecting pipe 75 and incline downwards in opposite directions to discharge high pressure water.

The brush 78 is interposed between the forward / reverse nozzles 76 and 77 to interlock with the surface of the solar panel 50 to remove foreign substances.

Here, solenoid valves that open and close the flow paths according to signals are attached to the connecting pipes 75 where branching starts with the forward / reverse nozzles 76 and 777.

That is, when the washing pump 72 is operated and the water stored in the washing tank 71 is pushed to the connecting pipe 75, the solenoid valve opens the flow path of the forward nozzle 76 to spray water as shown in FIG.

When a propulsive force is generated by water injection, the washing frame 73 moves in the other direction of the solar panel 50.

As soon as the movement is completed, the process of moving the solenoid valve to the original position by opening the flow path of the reverse nozzle 77 is continuously repeated.

Water sprayed in this process soaks and desorbs foreign matter in the solar panel 50, and the brush 78 wipes and removes foreign matter on the surface, such as a wiper of a vehicle.

Here, as for the washing roller 74, it is preferable to form the propulsion blades 74a inclined at a predetermined angle in the center of the outer surface as shown in FIG.

In this case, the forward / reverse nozzles 76 and 77 are further arranged to face the washing roller 74. That is, the water pressure of the water sprayed from the forward / reverse nozzles 76 and 77 is converted into the rotational force in the direction to be moved by the propulsion blade 70a to promote propulsion.

In addition, the safety sign plate according to the present invention may further include a fog collecting unit 80 that collects rainwater and fog and stores it in the washing tank 71 as shown in FIG. 11.

The fog collecting unit 80 is composed of a clamp 81, a connecting plate 82, a collecting panel 83, and a collecting container 84 as shown in FIG.

Clamp 81 is to guide the mounting on the upper end of the support 40, it is mounted in a plurality of up and down on the back of the connecting plate (82).

The connecting plate 82 is a skeleton that holds the collecting panel 83 and the collecting cylinder 84 and is horizontally fastened to one end of the clamp 81.

The collecting panel 83 is a mesh for collecting fog, and is mounted in multiple stages on one surface of the connecting plate 82.

The collection container 84 is disposed at the bottom of the collection panel 83 and collects water droplets falling into the mist collection together with rainwater and transfers them to the washing tank 71.

For example, moisture saturated in the air, such as dew or fog, condenses in the form of droplets by hitting and tangling the mesh of the collecting panel 83.

And the condensed water droplets are dropped into the collecting container 84 by its own weight, and the drops of water dropped into the collecting container 85d are immediately supplied to the washing tank 71.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and it is usually in the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. It is of course possible to perform various modifications by a person having knowledge of, and these modified embodiments should not be individually understood from the technical idea or prospect of the present invention.

10: case
10a: storage groove
20: Background sheet
30: Information block
31: LED board
32: reflective film
33: first light guide plate
33a: V groove
34: second light guide plate
35: perforated film
35a: circular hole
36: Joint sheet
36a: Joule Home
36b: Transparent sheet
36c: Black film
36d: black pigment
37: protective plate
38: airtight member
40: prop
50: solar panel
60: control module
65: Illuminance sensor
70: washing unit
71: washing tank
72: washing pump
73: washing frame
74: washing roller
74a: propulsion wing
75: Connection piping
76: forward nozzle
77: reverse nozzle
78: brush
80: fog collecting unit
81: clamp
82: connecting plate
83: collection panel
84: Canister

Claims (6)

In the signs that are installed in places with high risk of accidents to promote safety,
A case 10 having at least the same size and shape as the guide standard to be announced;
A background sheet 20 attached to the front surface of the case 10 and having a color and shape that stands out to inform;
A guide block 30 inserted into the case 10 and having a set shape and color to be notified;
Including,
The guide block 30 is sealed inside so that the inflow of foreign matter from the outside is blocked, and is supplied with external power recognizable even at night to turn artificial light from inside to outside,
The guide block 30 increases the reflection or absorption area of natural light incident from the outside and the visibility and readability of both day and night at the same time with the projected area that is illuminated in a guide shape compared to the passage area where the artificial light that is lit from the inside is directly emitted to the outside. Improve,
The guide block 30,
An LED substrate 31 that is supplied with power from outside and emits light;
A reflective film 32 disposed on the rear surface of the LED substrate 31 and reflecting the emitted light forward;
A first light guide plate 33 disposed on the front surface of the LED substrate 31 and having V grooves 33a formed in a grid shape on the front surface so that light emitted and reflected are scattered toward the front side;
A second light guide plate 34 disposed on the front surface of the first light guide plate 33 and diffused so that scattered light is uniformly distributed;
A perforated film 35 disposed on the front surface of the second light guide plate 34 and passing the diffused light in an equally spaced dot matrix shape;
A joint sheet (36) disposed on the front surface of the perforated film (35) and passing the passed light in a shape of contour lines at predetermined intervals;
A transparent protective plate 37 disposed on the front surface of the joint sheet 36 to pass light from inside and outside;
An airtight member 38 wrapped around the edge of the reflective film 32 to the protective plate 37 to seal the inside;
Eco-friendly safety signs, characterized in that consisting of.
delete The method according to claim 1,
The perforated film 35 and the joint sheet 36 have the same color as the guide color, but in the perforated film 35, the square or circular hole 35a is continuously arranged at a predetermined equal interval, and the joint sheet ( 36) is an eco-friendly safety sign, characterized in that the contour line grooves (36a) of a predetermined interval according to the shape is continuously arranged.
The method according to claim 3,
A support 40 for hanging the case 10 at a predetermined height;
One or more photovoltaic panels 50 that are mounted at an angle to the upper end of the support 40 to generate power;
A control module 60 mounted on one side of the post 40, storing power generated from the solar panel 50, and controlling the power of the LED board 31 according to a set sequence;
Eco-friendly safety sign further comprising a.
The method according to claim 4,
The control module 60 is an eco-friendly safety sign board, characterized in that the illumination sensor 65 is installed to measure the ambient light so that the brightness of the LED substrate 31 is changed in real time.
The method according to claim 4,
The safety signs,
Includes a washing unit 70 for reciprocating the solar panel 50 with the driving force of the water to be pushed to remove foreign matter on the surface;
The washing unit 70,
A washing tank 71 built in the control module 60 and storing a predetermined amount of water;
A washing pump 72 mounted on the washing tank 71 and feeding water stored in the solar panel 50;
A pair of washing frames 73 disposed on both side edges of the solar panel 50;
A washing roller 74 in rolling motion in engagement with the rim of the solar panel 50 on the lower inner side of the washing frame 73;
A connection pipe (75) crossing the solar panel (50) inside the upper end of the washing frame (73) and connected to the washing pump (72) and a hose;
A forward / reverse nozzle (76) (77) for branching in two directions at the lower end of the connecting pipe (75) and inclining downward in opposite directions from left to right to discharge high-pressure water;
A brush 78 interposed between the forward / reverse nozzles 76 and 77 to interlock with the surface of the solar panel 50 to remove foreign substances;
Eco-friendly safety signs, characterized in that consisting of.

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