KR102155546B1 - A Road sign using EL sheet - Google Patents

Abstract

The present invention relates to a road sign using an EL sheet. More specifically, since the road sign uses an EL sheet which emits light by itself, a thin sign can be made, the sign is easy to identify in the daytime as well as the nighttime as its glare is less bright, enabling a driver or a pedestrian to clearly recognize road instruction information, and the road sign, which is as light and thin as paper, has low power consumption, and enables easy installation, replacement and management. According to the present invention, since the road sign uses an EL sheet which emits light by itself, a thin sign can be made, the sign is easy to identify in the daytime as well as the nighttime as its glare is less bright, enabling a driver or a pedestrian to clearly recognize road instruction information, and the road sign, which is as light and thin as paper, has low power consumption, and enables easy installation, replacement and management. Moreover, provided is a road sign which can be stably used for a long time thanks to excellent heat-resistance, moisture-resistance, impact-resistance and the like.

Description

A Road sign using EL sheet}

The present invention relates to a road sign using an EL sheet, and more particularly, by using an EL sheet in which the sheet itself emits light, it is possible to implement a sign with a thin thickness, and it is easy to identify even in the daytime and at night due to less glare. B It relates to road signs using EL sheet that not only allows pedestrians to clearly recognize road guides, but also consumes less power because they are thin and light like paper, and easy to install, replace, and manage.

Road signs are installed on roads, intersections, mountain roads, etc. on which vehicles travel to guide the driver of road driving information.

Such a road sign is composed of a post installed on the center line or edge of the road, and a sign installed on the upper end of the post to display various information such as numbers, letters, symbols, and figures.

Lighting is installed on the sign so that not only daytime but also road information displayed at night can be clearly seen by the driver.

Examples of specific means of installing lighting include installing light emitting means such as light bulbs or LEDs inside the sign like a general advertisement sign so that the emitted light passes through the sign, or by installing a lighting device outside the sign. By allowing light to reflect off the sign, you can make the content discernible.

However, there are various disadvantages of such a conventional lighting device. However, when a light bulb-type lighting device is installed inside, the size and thickness of the lighting device are very large, making it difficult to manufacture and install, and has a short lifespan.

In addition, when lighting is installed outside the sign, maintenance is difficult, the driver's perception is confused by the lighting means, and the appearance is unclear.

Therefore, it is possible to implement a sign with a thin thickness, and it is easy to identify even in the daytime and at night due to low glare, and there is a need to develop a technology for a road sign that enables drivers or pedestrians to clearly recognize road guidance information.

Korean Utility Model Registration No. 20-0249884

The present invention is to solve the problems of the prior art, and by using an EL sheet in which the sheet itself emits light, it is possible to implement a sign having a thin thickness, and it is easy to identify even at daytime and at night due to less glare, so that the driver or pedestrian The purpose of this is to provide road signs that can clearly recognize road guidance information, as well as paper-thin and light, which consumes little power and is easy to install, replace, and manage.

In addition, it is an object of the present invention to provide a road sign that is excellent in heat resistance, moisture resistance, weather resistance, impact resistance, and the like that can be used stably for a long period of time.

The present invention in order to achieve the above object is a plate formed on the upper end of the post installed on the ground; A protective sheet formed on the plate; EL sheet formed on the protective sheet; A reflective sheet formed on the EL sheet; A display portion formed on the reflective sheet; A reflective film formed on the reflective sheet and formed in a region other than the display portion; And a power supply unit for supplying power to the EL sheet.

In one embodiment of the present invention, the protective sheet is a thermoplastic resin; Filler; Heat stabilizer; A copolymer of an acrylate group-containing silane coupling agent and an acrylic acid monomer; And a silane coupling agent oligomer prepared by reacting an epoxy group-containing silane coupling agent, an acrylate group-containing silane coupling agent, and bisphenol A (BPA).

In one embodiment of the present invention, the EL sheet is a protective film; A conductive layer formed on the protective layer; A dielectric layer formed on the conductive layer; A fluorescent layer formed on the dielectric layer; A transparent electrode formed on the fluorescent layer; And a protective film formed on the transparent electrode.

In one embodiment of the present invention, it is characterized in that it further comprises a binder layer between the EL sheet and the reflective sheet.

In one embodiment of the present invention, the EL sheet is provided with an EL module in a portion corresponding to numbers, letters, and figures for displaying a road guide, and the display unit includes numbers, letters, and numbers on the upper surface of the portion where the EL module is installed. It is characterized in that the figure is printed to display a road guide.

In one embodiment of the present invention, the power supply is characterized in that the solar cell or a commercial power supply.

In the present invention, by using the EL sheet, the sheet itself emits light, it is possible to implement a sign with a thin thickness, and it is easy to identify even in daytime and at night due to low glare, so that the driver or pedestrian can clearly recognize the road guidance information. In addition, as it is thin and light like paper, it consumes less power and can provide road signs that are easy to install, replace, and manage.

In addition, the present invention is excellent in heat resistance, moisture resistance, weather resistance, impact resistance, etc. can provide a road sign that can be used stably for a long time.

1 shows a road sign of the present invention.
2 shows an EL sheet of the road sign of the present invention.
3 shows a display portion of a road sign of the present invention.
4 shows a state in which the road sign of the present invention is illuminated.

The present invention will be described in detail based on the following examples. The terms, examples, etc. used in the present invention are merely exemplified to describe the present invention in more detail and to aid understanding of those skilled in the art, and the scope of the present invention should not be interpreted as being limited thereto.

Technical terms and scientific terms used in the present invention represent the meanings commonly understood by those of ordinary skill in the art, unless otherwise defined.

The present invention is a plate formed on the top of the post installed on the ground; A protective sheet formed on the plate; EL sheet formed on the protective sheet; A reflective sheet formed on the EL sheet; A display portion formed on the reflective sheet; A reflective film formed on the reflective sheet and formed in a region other than the display portion; And a power supply unit for supplying power to the EL sheet (FIG. 1).

The post is installed standing on the middle line or edge of the road, and a plate is disposed on the upper end of the post.

The plate is made of aluminum or plastic, and may be manufactured in various shapes such as triangle, square, circle, polygon.

The protective sheet is installed on the upper surface of the plate, prevents heat, moisture, moisture, etc. generated from the plate from being transferred to the EL sheet, and serves to insulate the plate from the EL sheet.

The protective sheet is a thermoplastic resin; Filler; Heat stabilizer; A copolymer of an acrylate group-containing silane coupling agent and an acrylic acid monomer; And a silane coupling agent oligomer prepared by reacting an epoxy group-containing silane coupling agent, an acrylate group-containing silane coupling agent, and bisphenol A (BPA).

The composition may include 1 to 15 parts by weight of a filler, 0.5 to 5 parts by weight of a heat stabilizer, 1 to 10 parts by weight of the copolymer, and 1 to 10 parts by weight of the silane coupling agent oligomer based on 100 parts by weight of the thermoplastic resin.

The thermoplastic resin is used to impart durability, water resistance, weather resistance, and heat resistance, and may be used at least one from polyolefin (polyethylene, polypropylene, etc.), polyester, polyamide, polystyrene, polyurethane, polyketone, acrylic resin, etc. .

The fillers include calcium carbonate, silica, alumina, clay, diatomaceous earth, charcoal, loess, carbon black, and the like, and serve to improve strength, durability and weather resistance.

The filler is preferably used in an amount of 1 to 15 parts by weight based on 100 parts by weight of the thermoplastic resin, and when the content is less than 1 part by weight, durability and weather resistance are deteriorated, and when the content exceeds 15 parts by weight, processability is deteriorated.

The heat stabilizer is used to improve weather resistance, heat resistance and durability, and benzotriazole, phenol antioxidant, alkylated monophenol, alkylthiomethylphenol, hydroquinone, alkylated hydroquinone, hydroxybenzyl, triazine, etc. are not limited. Can be used.

The content of the heat stabilizer is preferably 0.5 to 5 parts by weight based on 100 parts by weight of the thermoplastic resin, and when the content is less than 0.5 parts by weight, weather resistance, heat resistance and durability are deteriorated, and when it exceeds 5 parts by weight, mechanical properties are deteriorated.

The copolymer of the acrylate group-containing silane coupling agent and the acrylic acid monomer may improve adhesion and improve durability and water resistance.

As the acrylate group-containing silane coupling agent, 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane, and 3-methacryloxypropyltri Ethoxysilane, 3-acryloxypropyltrimethoxysilane, methacryloxymethyltriethoxysilane, and methacryloxymethyltrimethoxysilane.

The acrylic acid monomer is acrylic acid, methacrylic acid, methyl acrylic acid, ethyl acrylic acid, butyl acrylic acid, 2-ethyl hexyl acrylic acid, decyl acrylic acid, methyl methacrylic acid, ethyl methacrylic acid, butyl methacrylic acid, 2-ethyl hexyl methacrylic acid , Decyl methacrylic acid, and the like.

The weight ratio of the acrylate group-containing silane coupling agent and the acrylic acid monomer is preferably 70 to 90:10 to 30, and weather resistance and durability can be maximized within the numerical range.

The copolymer is used in an amount of 1 to 10 parts by weight based on 100 parts by weight of the thermoplastic resin, and when the content is less than 1 part by weight, adhesion is lowered, and when it exceeds 10 parts by weight, durability is lowered.

The silane coupling agent oligomer prepared by reacting the epoxy group-containing silane coupling agent, the acrylate group-containing silane coupling agent, and bisphenol A (BPA) may improve adhesion and durability.

At this time, 20 to 60 parts by weight of an acrylate group-containing silane coupling agent and 10 to 40 parts by weight of bisphenol A may be used based on 100 parts by weight of the epoxy group-containing silane coupling agent.

The epoxy group-containing silane coupling agent is 2-glycidoxyethylmethyldimethoxysilane, 2-glycidoxyethylmethyldiethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, and 3-glycidoxypropylmethyldiethoxysilane. Glycidoxy C _1-4 alkyl C _1-4 alkyl C _1-4 alkoxysilane such as; Glycidoxy C ₁ such as 2-glycidoxyethyltrimethoxysilane, 2-glycidoxyethyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, and 3-glycidoxypropyltriethoxysilane _-4 alkyl C _1-4 alkoxysilane; 2-(3,4-epoxycyclohexyl)ethylmethyldimethoxysilane, 2-(3,4-epoxycyclohexyl)ethylmethyldiethoxysilane, 3-(3,4-epoxycyclohexyl)propylmethyldimethoxysilane Epoxy C _3-10 cycloalkyl C _1-4 alkyl C _1-4 alkyl C _1-4 alkoxysilane such as 3-(3,4-epoxycyclohexyl)propylmethyldiethoxysilane; 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltriethoxysilane, 3-(3,4-epoxycyclohexyl)propyltrimethoxysilane And epoxy C _3-10 cycloalkyl C _1-4 alkyl C _1-4 alkoxysilanes such as 3-(3,4-epoxycyclohexyl)propyltriethoxysilane.

The weight average molecular weight of the silane coupling agent oligomer is preferably 1,000 to 50,000 g/mol, and when the weight average molecular weight satisfies the above numerical range, durability and weather resistance can be maximized.

The silane coupling agent oligomer is used in an amount of 1 to 10 parts by weight based on 100 parts by weight of the thermoplastic resin, and when the content is less than 1 part by weight, adhesion is lowered, and when it exceeds 10 parts by weight, durability is lowered.

The EL sheet is formed on the upper surface of the protective sheet, and the sheet can emit light by itself by arranging a plurality of EL elements (FIG. 2).

The EL sheet may emit light by itself by arranging the EL element on the entire sheet, or the EL element may be disposed on only a part of the sheet to emit light by itself only in the area where the EL element is disposed.

For example, in the case of arranging the EL element in the entire EL sheet, various numbers, letters, symbols, and figures may be output according to the control of a control unit included in the power supply unit to indicate a required road guide display.

The control unit stores various signal values that match the content to be displayed, and when a specific signal value is selected, only EL elements corresponding to the display content matching the signal value may be emitted to output a desired road guidance display. In this case, the display portion and the reflective film formed on the upper surface of the reflective sheet may not be used.

For example, when the EL element is arranged over the entire EL sheet, the EL sheet performs only a lighting function, and a road guide can be displayed by a display portion formed on the upper surface of the reflective sheet.

That is, numbers, letters, symbols, and figures for road guidance display are printed in various colors on the display part formed on the upper surface of the reflective sheet, and only the display part is lit by the light emission of the EL element to provide the required road guidance display. Can be indicated.

In addition, in the case of placing the EL element only on a part of the EL sheet, the EL element is installed only in the corresponding portion according to the road guide content (numbers, letters, symbols, and figures) to be displayed, and a reflective sheet is formed on the upper surface of the EL sheet. After that, a display part is printed on the upper surface of the part where the EL element is installed, and a reflective film is formed on the upper surface of the part where the EL element is not installed, so that the contents of the road marking corresponding to the display part are outputted by the light emission of the EL element to guide the road. You can mark it.

The EL sheet may install an EL element or an EL module only in portions corresponding to numbers, letters, symbols, and figures for displaying road guidance.

A reflective sheet is formed on an upper surface of the EL sheet, and a display portion and a reflective film are formed on the upper surface of the reflective sheet. The display unit may be printed on the upper surface of the part where the EL module is installed to match the shape of the EL module formed on the lower surface, and only the corresponding shape is emitted by the light emission of the EL module to display road guidance (FIG. 3). The reflective film is formed on an upper surface of a portion where the EL module is not installed, and reflects light, thereby making the road guide display of the display unit clear.

The display unit can be printed in various colors such as white, red, and black, and when printing, a plurality of fine holes are formed in the display unit, so that the white light of the EL module is exposed through the fine holes, so that the road guide display of the display unit can be displayed at night. It can be clearly output (Fig. 4).

The EL sheet is a protective film; A conductive layer formed on the protective layer; A dielectric layer formed on the conductive layer; A fluorescent layer formed on the dielectric layer; A transparent electrode formed on the fluorescent layer; And a protective film formed on the transparent electrode.

The reflective sheet is formed on the upper surface of the EL sheet, and prevents heat, moisture, moisture, etc. generated from outside from being transmitted to the EL sheet, and protects the EL sheet by blocking ultraviolet rays and contaminants.

The reflective sheet reflects light irradiated from the outside, thereby making the road guide display clear.

The power supply unit supplies power to the EL sheet, and a solar cell or a commercial power supply may be used.

In addition, the power supply unit may include a control unit to control the driving of the road sign. In particular, the control unit stores various signal values matching the contents to be displayed, and when a specific signal value is selected, the display contents matching the signal value It is possible to output a desired road guide display by emitting only the EL element corresponding to.

In addition, the road sign of the present invention may further include a binder layer between the EL sheet and the reflective sheet.

The binder layer may improve durability, weather resistance, heat resistance, etc. by improving the adhesion between the EL sheet and the reflective sheet, and may be provided in the form of a film or an adhesive.

The binder layer is a thermoplastic resin; Filler; Heat stabilizer; Polyester polyol; A copolymer of an acrylate group-containing silane coupling agent and an acrylic acid monomer; And a silane coupling agent oligomer prepared by reacting an epoxy group-containing silane coupling agent, an acrylate group-containing silane coupling agent, and bisphenol A (BPA).

The composition comprises 1 to 15 parts by weight of a filler, 0.5 to 5 parts by weight of a heat stabilizer, and 1 to 10 parts by weight of a polyester polyol based on 100 parts by weight of a thermoplastic resin; It may include 1 to 10 parts by weight of the copolymer and 1 to 10 parts by weight of the silane coupling agent oligomer.

The polyester polyol can be prepared by polymerizing glycol components such as ethylene glycol, propylene glycol, butanediol, 3-methylpentanediol, hexanediol, and bisoxymethylcyclohexane and acid components such as adipic acid, terephthalic acid, and isophthalic acid. have.

The weight average molecular weight of the polyester polyol is preferably 1,000 to 30,000 g/mol, and when the weight average molecular weight satisfies the above numerical range, durability and weather resistance can be maximized.

The polyester polyol is used in an amount of 1 to 10 parts by weight based on 100 parts by weight of the thermoplastic resin, and when the content is less than 1 part by weight, adhesion is lowered, and when it exceeds 10 parts by weight, durability is lowered.

In the road sign of the present invention, since sunlight is reflected on the reflective sheet and the reflective film during the daytime, the contents of the road marking on the display unit can be clearly displayed without additional lighting.

In addition, at night, power is applied to the EL sheet by the power supply unit, and the EL element or EL module disposed on the EL sheet by the applied power emits light, and through this light emission, the contents of the road marking on the display section printed on the top are clearly output. Can be.

The present invention will be described in detail through examples and comparative examples below. The following examples are only illustrated for the practice of the present invention, and the contents of the present invention are not limited by the following examples.

(Example 1)

100 parts by weight of 3-glycidoxypropyltrimethoxysilane, 40 parts by weight of 3-methacryloxypropyltrimethoxysilane, and 30 parts by weight of bisphenol A were mixed and reacted to prepare a silane coupling agent oligomer.

100 parts by weight of polyethylene terephthalate, 10 parts by weight of calcium carbonate, 1 part by weight of benzotriazole, 5 parts by weight of a copolymer of 3-methacryloxypropyltrimethoxysilane and acrylic acid, and 1 to 10 parts by weight of the silane coupling agent oligomer The composition was extruded to prepare a protective sheet.

(Example 2)

A protective sheet was prepared in the same manner as in Example 1, except that 0.5 parts by weight of the copolymer was used.

(Example 3)

A protective sheet was prepared in the same manner as in Example 1, except that 15 parts by weight of the copolymer was used.

(Comparative Example 1)

A protective sheet was prepared in the same manner as in Example 1, except that the copolymer was not used.

The durability, dimensional change rate, and heat resistance of the protective sheets prepared from the Examples and Comparative Examples were measured, and the results are shown in Table 1 below.

For durability, after immersing the protective sheet in water at 30° C. for 7 days, the state of the protective sheet was observed, and marked as excellent, excellent, moderate, and poor.

The dimensional change rate was measured in accordance with KS K ISO 3759.

Heat resistance was observed at the degree of yellowing of the protective sheet after heating the protective sheet for 3 hours in a hot air circulation type heating furnace maintained at 80°C, and marked as excellent, excellent, moderate, and poor.

division Example 1 Example 2 Example 3 Comparative Example 1 durability eminence usually usually Bad Dimensional change rate (%) 1.5 2.3 2.5 4.8 Heat resistance eminence usually usually Bad

From the results of Table 1, it can be seen that the protective sheets of Examples 1 to 3 have excellent durability, dimensional change rate, and heat resistance. In particular, Example 1 has the most excellent properties.

On the other hand, it can be seen that the characteristics of Comparative Example 1 are inferior to those of the Example.

10: EL sheet
20: display
30: reflective film

Claims (6)

Plates formed on the top of the posts installed on the ground;
A protective sheet formed on the plate;
EL sheet formed on the protective sheet;
A reflective sheet formed on the EL sheet;
A display portion formed on the reflective sheet;
A reflective film formed on the reflective sheet and formed in a region other than the display portion; And
In the road sign including; a power supply for supplying power to the EL sheet,
The protective sheet is a thermoplastic resin; Filler; Heat stabilizer; A copolymer of an acrylate group-containing silane coupling agent and an acrylic acid monomer; And a silane coupling agent oligomer prepared by reacting an epoxy group-containing silane coupling agent, an acrylate group-containing silane coupling agent, and bisphenol A (BPA). A road sign comprising a composition.
delete The method of claim 1,
The EL sheet is a protective film; A conductive layer formed on the protective layer; A dielectric layer formed on the conductive layer; A fluorescent layer formed on the dielectric layer; A transparent electrode formed on the fluorescent layer; And a protective film formed on the transparent electrode.
The method of claim 3,
Road sign, characterized in that it further comprises a binder layer between the EL sheet and the reflective sheet.
The method of claim 1,
In the EL sheet, an EL module is installed in a portion corresponding to numbers, letters, and figures for displaying road guidance,
The display unit is a road sign, characterized in that the road guide display by printing numbers, letters, and figures on the upper surface of the portion where the EL module is installed.
The method of claim 5,
The road sign, characterized in that the power supply is a solar cell or a commercial power supply.

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