KR102463168B1 - Light-emitting Traffic Safety Sign with Quantum Dot Layer - Google Patents

Abstract

The present invention relates to a light-emitting traffic safety sign equipped with a quantum dot layer. Provided is a traffic guide sign, wherein the quantum dot layer, which basically changes the emission colors of a blue LED into red light and white light inside a light-emitting part, is formed inside the light-emitting part, and since the traffic guide sign can emit light directly toward a base part of a base panel and a display part, the traffic guide sign exhibits very good visibility, is uniform in quality at a lower cost, and has excellent operational reliability and durability. Therefore, maintenance and repair costs are significantly reduced by promoting structural simplification and weight reduction.

Description

{Light-emitting Traffic Safety Sign with Quantum Dot Layer}

The present invention relates to an invention for a light-emitting traffic safety sign, and more specifically, to an invention for a light-emitting traffic safety sign provided with a quantum dot layer having excellent visibility.

Patent Invention 001 relates to a traffic sign that can be identified both during the day and at night. At night, the sign is easily recognized by the flashing operation of the backlight installed inside the frame, and the backlight is turned off during the day and penetrates the reflective sheet. It is about a traffic sign that is easy to identify both during the day and at night so that drivers can easily identify the sign even on a quiet country road or a remote road by the flashing of the LED light projected to the front.

Patent Invention 002 relates to a light emitting sign using an LED, a light emitting sign body consisting of a front plate with a guide mark on the front, a rear plate fixed to the rear while facing the front plate, and mounted inside the rear plate An LED light emitting device that emits a predetermined color and a conversion sheet that is attached in close contact with the front plate to diffuse the light of a predetermined color emitted from the LED light emitting device and convert it into a tube of another color It is about a light-emitting type sign using an LED to emit white light through it.

Patent Invention 003 relates to an illuminated solar sign using a blue LED and optical fiber, a direct-type illuminated sign body consisting of a front plate with a guide sign on the front, and a rear plate fixed to the rear while facing the front plate, It consists of a plurality of LED light emitting devices mounted on the inside of the rear plate and having a wavelength range of 430 nm to 460 nm, and an optical lens that divides the blue light source emitting from the LED light emitting device into a plurality of light sources and outputs them, and an optical lens for diffusing the light distribution, A conversion sheet for converting blue light output in a direct manner into a white light source is mounted on the back of the retroreflective sheet attached to the illuminated sign. It is about an illuminated solar sign using a blue LED to output a light source and an optical fiber.

Patent Invention 004 relates to a lighting type lighting plate using a light conversion sheet, a lighting part formed inside the frame, a cover part positioned on the rear side of the frame to seal the frame, and a front surface of the frame It includes a cover sheet that provides a safety indication by applying a perforated sheet having the same color as the indication to the edge of the retroreflective sheet or black sheet constituting the display unit, and forms an EL or LED light source as a backlight for daytime safety. A light conversion sheet that allows the edge to emit light at night while maintaining the design and color of the cover and maintains the existing retroreflective function even when the light source is not lit by using a high-brightness retroreflective sheet for the rest. It is about the lighting type lighting board used.

US 10,229,591 B2 (Registration Date March 12, 2019) KR 10-2018-0137138 A (published on December 27, 2018) KR 10-1872900 B1 (registration date June 25, 2018) KR 10-1313039 B1 (registration date September 24, 2013)

The present invention relates to a light-emitting type traffic safety sign provided with a quantum dot layer having excellent visibility.

In order to solve the problems of the prior inventions, the present invention is an invention for a light-emitting traffic safety sign equipped with a quantum dot layer, specifically, a base portion 10 made of a high-brightness retroreflective sheet and having a background color of the sign, and traffic information A base panel 16 having a display part 12 having a different color from the base part 10 in a pattern such as a number or figure attached to the front surface of the aluminum plate 14; and the base of the base panel 16 The blue LED ( 18) is composed of a second reflector 26 including a second printed circuit board 24 arranged thereon and a light emitting part 28 attached to the rear surface of the base panel 16; and the light emitting part 28 and a housing 30 constituting a case to which the base panel 16 is fixed, and a light-transmitting hole 32 is formed in the base panel 16, and the light emitting part 28 is first printed The emission color of the blue LEDs 18 arranged on the circuit board 20 is converted into red light, and the emission color of the blue LEDs 18 arranged on the second printed circuit board 24 of the light emitting unit 28 is converted to white light. Quantum dot layer 34 that converts; includes being formed.

In the light emitting traffic safety sign provided with a quantum dot layer of the present invention, in the invention presented above, the blue LED 18 arranged on the first printed circuit board 20 of the light emitting unit 28 has a quantum dot of a red wavelength. The included quantum dot layer 34-1 is formed and the blue LED 18 arranged on the second printed circuit board 24 of the light emitting unit 28 contains a mixture of quantum dots of green wavelength and quantum dots of red wavelength. Quantum dot layer 34-2; includes that provided.

In the invention presented above, the light-emitting traffic safety sign provided with a quantum dot layer of the present invention includes that the quantum dot layers 34-1 and 34-2 are provided with any one of a quantum dot coating layer and a quantum dot sheet.

In the invention presented above, the light-emitting traffic safety sign provided with the quantum dot layer of the present invention is a quantum dot coating layer of a red wavelength on the protective film or insulating material 36 of the first and second printed circuit boards 20 and 24 . (38); and a quantum dot coating layer 40 in which the quantum dots of the green wavelength and the quantum dots of the red wavelength are mixed.

In the invention presented above, the light-emitting traffic safety sign provided with the quantum dot layer of the present invention is the sidewall of the first reflector 22 and the base portion 10 in contact with the front opening of the first reflector 22. A quantum dot coating layer 42 of a red wavelength is provided on the rear side, and a quantum dot coating layer 44 in which a quantum dot of a green wavelength and a quantum dot of a red wavelength are mixed; is provided on the sidewall of the second reflector 26, and the first 2 A quantum dot sheet 46 in which quantum dots of green wavelength and quantum dots of red wavelength are mixed; includes attached to the rear surface of the display unit 12 in contact with the front opening of the reflector 26 .

The present invention is a quantum dot layer containing a quantum dot of a red wavelength, and a quantum dot layer in which a quantum dot of a green wavelength and a quantum dot of a red wavelength are mixed is formed inside the light emitting unit, so that a blue color conversion sheet or optical lens is not used. Since the luminous color of the LED is basically made to be red light and white light, so that it can emit light directly toward the base and display parts of the base panel, the visibility is very good.

And, since the present invention does not require a light transmission means such as an optical fiber, a color conversion sheet, an optical lens, etc., it exhibits the advantage of being able to provide a traffic guide sign of uniform quality at a lower cost.

In addition, the present invention exhibits an advantage of not only exhibiting very excellent operational reliability but also greatly reducing maintenance and repair costs by simplifying the structure, reducing the volume and weight, and reducing the weight.

In addition, since the present invention is provided with a quantum dot layer also on the reflector, the light synthesis and light collection properties are greatly improved, thereby further improving visibility.

1 is an exploded perspective view of the present invention traffic safety sign.
Figure 2 is an exploded cross-sectional view of the present invention traffic safety sign
Figure 3 is a combined cross-sectional view according to an embodiment of the present invention traffic safety sign.
Figure 4 is a combined cross-sectional view according to another embodiment of the present invention traffic safety sign.
Figure 5 is a combined cross-sectional view according to another embodiment of the present invention traffic safety sign.

Hereinafter, the most preferred embodiment of the present invention will be described in detail in order to explain in detail enough that a person of ordinary skill in the art can easily carry out the present invention.

Citation relationships in the following examples are merely numbers presented to aid technical understanding, and other non-quoted examples may be cited.

Even a configuration not specified in the following embodiments may be substituted with a target exhibiting a similar purpose and effect. A sub-concept configuration not specified in the following embodiments is considered to be specified.

[Embodiment 1-1] The present invention relates to a light-emitting traffic safety sign provided with a quantum dot layer, which is made of a high-brightness retroreflective sheet, a base portion 10 having a background color of the sign, and traffic information in numbers or figures A base panel 16 having a display part 12 having a different color from the base part 10 in a pattern such as a pattern, etc., attached to the front surface of the aluminum plate 14; and the base part 10 of the base panel 16 The first reflector 22 including the first printed circuit board 20 on which the blue LED 18 is arranged and the blue LED 18 corresponding to the display unit 12 of the base panel 16 are arranged It consists of a second reflector 26 including a second printed circuit board 24 and is a light emitting part 28 attached to the rear surface of the base panel 16; and the light emitting part 28 and the base panel (16) a housing (30) constituting a case to which it is fixed; includes.

The present invention relates to a light-emitting traffic information sign provided with a quantum dot layer. To realize this, a light transmitting hole 32 is formed in the base portion 10 and the display portion 12 of the base panel 16 using a machining center (MCT), etc., and the first printed board of the light emitting unit 28 is formed. Converts the emission color of the blue LED 18 arranged in 20 to red light, and converts the emission color of the blue LED 18 arranged in the second printed circuit board 24 of the light emitting unit 28 to white light A quantum dot layer 34 is formed.

[Example 1-2] The present invention relates to a light emitting type traffic safety sign provided with a quantum dot layer, and in Example 1-1, the light emitting unit 28 arranged on the first printed circuit board 20 A quantum dot layer 34-1 including quantum dots of a red wavelength is formed on the blue LED 18, and the blue LED 18 arranged on the second printed circuit board 24 of the light emitting unit 28 has a green wavelength. It is formed as a quantum dot layer 34-2 in which the quantum dots of the red wavelength and the quantum dots of the red wavelength are mixed.

[Example 1-3] The present invention relates to a light emitting type traffic safety sign provided with a quantum dot layer, and in Example 1-2, the quantum dot layers 34-1 and 34-2 are coated with a quantum dot layer and a quantum dot sheet. form one of

[Example 1-4] The present invention relates to a light emitting type traffic safety sign provided with a quantum dot layer, and in Example 1-1, a protective film or insulation of the first and second printed circuit boards 20 and 24 A quantum dot coating layer 38 of a red wavelength and a quantum dot coating layer 40 in which quantum dots of a green wavelength and quantum dots of a red wavelength are mixed are formed on the material (PSR) 36 .

[Example 1-5] The present invention relates to a light-emitting type traffic safety sign provided with a quantum dot layer, and in Example 1-1, the sidewall of the first reflector 22 and the first reflector 22 A quantum dot coating layer 42 of a red wavelength is formed on the rear surface of the base portion 10 in contact with the front opening, and a quantum dot coating layer in which green wavelength quantum dots and red wavelength quantum dots are mixed on the sidewall of the second reflector 26 ( 44), a quantum dot sheet 46 in which quantum dots of green wavelength and quantum dots of red wavelength are mixed is attached to the rear surface of the display unit 12 in contact with the front opening of the second reflector 26 .

[Example 1-6] The present invention relates to a light-emitting traffic safety sign provided with a quantum dot layer, and in Examples 1-3 or 1-5, the quantum dot sheet is a quantum dot sheet by mixing a quantum dot and an ultraviolet curable resin. In order to increase adhesion, it was processed into a sheet form between the primer-treated films, and then cut to the required size and used. For the mixing of quantum dots and resin, the IBOA monomer is mixed at a weight ratio of 1:10, then the oligomer and the red are mixed in a ratio of 1:1, and in the case of yellow, the mixture is mixed in a ratio of 1:5, and Ti02 is added as a dispersing agent. and mixed and used. In the present invention, the green and red quantum dot mixing ratio is 4:1, and this ratio can be changed according to the luminous flux of the LED and required color coordinates.

10: base part 12: display part
14: aluminum plate 16: base panel
18: blue LED 20: first printed circuit board
22: first reflector 24: second printed circuit board
26: second reflector 28: light emitting part
30: enclosure 32: light-transmitting hole
34: quantum dot layer
34-1: Quantum dot layer containing quantum dots of red wavelength
34-2: quantum dot layer in which green wavelength quantum dots and red wavelength quantum dots are mixed
36: protective film or insulating material 38: quantum dot coating layer of red wavelength
40: quantum dot coating layer in which quantum dots of green wavelength and quantum dots of red wavelength are mixed
42: red wavelength quantum dot coating layer
44: a coating layer in which quantum dots of green wavelength and quantum dots of red wavelength are mixed
46: quantum dot sheet in which quantum dots of green wavelength and quantum dots of red wavelength are mixed

Claims (5)

It consists of a high-brightness retro-reflective sheet and has a base part 10 having a base color for the cover, and
a base panel 16 attached to the front surface of the aluminum plate 14 with the traffic information in a pattern such as numbers or figures, the base part 10, and a display part 12 having a different color;
The display unit ( 12) and consists of a second reflector 26 including a second printed circuit board 24 on which blue LEDs 18 are arranged, and a light emitting unit 28 attached to the rear surface of the base panel 16;
and a housing 30 constituting a case to which the light emitting part 28 and the base panel 16 are fixed, and a light transmitting hole 32 is formed in the base panel 16, and the light emitting part ( The blue LED 18 arranged on the second printed circuit board 24 of the light emitting unit 28 converts the emission color of the blue LED 18 arranged on the first printed circuit board 20 of 28 to red light. ) to convert the emission color of the quantum dot layer 34 into white light;
A quantum dot layer 34-1 including quantum dots of a red wavelength is formed on the blue LED 18 arranged on the first printed circuit board 20 of the light emitting unit 28, and The blue LED 18 arranged on the second printed circuit board 24 includes a quantum dot layer 34-2 in which the quantum dots of the green wavelength and the quantum dots of the red wavelength are mixed;
A light emitting type traffic safety sign provided with a quantum dot layer including that which is formed.
delete The light-emitting type traffic information sign with a quantum dot layer according to claim 1, wherein the quantum dot layer (34-1, 34-2) is provided with any one of a quantum dot coating layer and a quantum dot sheet.
The method according to claim 1, Red wavelength quantum dot coating layer 38 on the protective film or insulating material 36 of the first and second printed circuit boards (20, 24); And, the quantum dots of the green wavelength and the quantum dots of the red wavelength A light-emitting traffic information sign provided with a quantum dot layer, including a mixed quantum dot coating layer (40).
The method according to claim 1, A quantum dot coating layer 42 of a red wavelength is provided on the rear surface of the base portion 10 in contact with the sidewall of the first reflector 22 and the front opening of the first reflector 22; A quantum dot coating layer 44 in which green wavelength quantum dots and red wavelength quantum dots are mixed is provided on the sidewall of the second reflector 26, and the display unit 12 in contact with the front opening of the second reflector 26 A quantum dot sheet 46 in which the quantum dots of the green wavelength and the quantum dots of the red wavelength are mixed on the back; a light emitting traffic information sign provided with a quantum dot layer including an attached one.

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