KR102395976B1 - LED traffic sign and manufacturing method the same - Google Patents

Abstract

The present invention relates to an LED traffic sign and a manufacturing method thereof, and more particularly, in an LED traffic sign driven by generating natural energy such as wind power and solar heat, even if the light quantity of the LED module is not sufficiently exhibited due to the low power structure , limiting unnecessary light leakage, reflection, transmission, etc. of the LED module between the case and the transmission plate, intensively guiding the light irradiation direction toward the front, and at the same time as the transmission margin formed along the periphery of the cover pattern image formed on the transmission plate LED traffic sign capable of manufacturing a traffic sign that can secure sufficient night visibility by more emphasizing the main information of the traffic sign even under the condition that the light amount of the LED module is not sufficient by more concentrating the amount of light, and a method for manufacturing the same will be.

Description

LED traffic sign and manufacturing method thereof

The present invention relates to an LED traffic sign and a manufacturing method thereof, and more particularly, in an LED traffic sign driven by generating natural energy such as wind power and solar heat, even if the light quantity of the LED module is not sufficiently exhibited due to the low power structure , limiting unnecessary light leakage, reflection, transmission, etc. of the LED module between the case and the transmission plate, intensively guiding the light irradiation direction toward the front, and at the same time as the transmission margin formed along the periphery of the cover pattern image formed on the transmission plate LED traffic sign capable of manufacturing a traffic sign that can secure sufficient night visibility by more emphasizing the main information of the traffic sign even under the condition that the light amount of the LED module is not sufficient by more concentrating the amount of light, and a method for manufacturing the same will be.

Among the facilities on the road, there are regulation, instruction, road surface and caution signs, and these traffic signs are usually manufactured as luminous paint so that they can be clearly identified by reflecting the light of the headlight of a moving car, or some signs are equipped with a diffuse reflector. It is common to attach and install on a curved road.

However, the conventional signs as described above have a very high risk of accidents because the distance recognized by the driver must reach a relatively short distance in a construction section at night or a road for high-speed driving.

In order to improve some of these problems, a technology for connecting a power source and blinking by installing a light source such as a light bulb or a light emitting diode on a part of a sign has been proposed. Electrical work was mandatory, and given the scale of such electrical work, it is true that the introduction of signs accompanying separate electrical work was not very effective.

In consideration of this problem, when installing structures that require electric power in road structures, most of them self-generate in a manner using natural energy such as sunlight, solar heat, and wind power to satisfy the rating of the light source, but conventional natural energy generation Considering the power generation efficiency of the system, there was a disadvantage that the light source could not provide sufficient amount of light at night time.

Therefore, in the light source sign using natural energy, there is a demand for technology development to ensure night visibility by providing a sufficient amount of light even with low power.

Registered Patent 10-1823840

The present invention was created to solve the problems in the prior art, and in the LED traffic sign driven by generating natural energy such as wind power and solar heat, the light quantity of the LED module is not sufficiently exhibited due to the low power structure Even if not, it restricts unnecessary light leakage, reflection, transmission, etc. of the LED module between the case and the transmission plate, intensively guides the light irradiation direction toward the front, and at the same time, the transmission margin formed along the periphery of the cover pattern image formed on the transmission plate An LED traffic sign capable of manufacturing a traffic sign that can secure sufficient night visibility by more emphasizing the main information of the traffic sign even under the condition that the light amount of the LED module is not sufficient by concentrating the amount of light only with Its purpose is to provide

The present invention is a means for achieving the above object, (a) providing a transmissive plate, (b) providing a case including an LED module therein, and (c) combining the transmissive plate to the front of the case In an LED traffic sign and a method for manufacturing the same, comprising: (a1) cutting a transparent synthetic resin substrate into a predetermined shape to form a base plate; (b1) UV-printing the first opaque layer at a point excluding the transmission pattern on the back surface of the base plate; (c1) attaching a reflective sheet to the front surface of the base plate; (d1) UV-printing a second opaque layer having a cover pattern image having the same shape as the transmission pattern on the reflective sheet; and (e1) removing the reflective sheet along the edge of the cover pattern image to form a transmission margin around the edge of the cover pattern image through which the light of the LED module is transmitted.

In addition, the edge of the cover pattern image is configured to be offset by a predetermined distance to the inside of the transmission pattern.

In addition, it is characterized in that the sandblasting treatment is performed on the front and back surfaces of the base plate between the steps (a1) and (b1).

In addition, in the step (a1), the substrate is cut so that the coupling piece is formed to be expanded around the rim of the base plate, and the step of preparing the case includes: (a2) combining the back plate with a frame-shaped profile back; (b2) temporarily fixing the LED module to the front of the back plate with an adhesive; and (c2) fixing the LED module to the back board by coupling the fixing jig to the front of the temporarily fixed LED module; including, wherein the profile includes: a first horizontal plate placed vertically on the back board; a pair of first vertical plates bent vertically at the front and rear ends of the first horizontal plate; a pair of second horizontal plates that are vertically bent inwardly at each end of the pair of first vertical plates; a pair of second vertical plates bent vertically at each end of the pair of second horizontal plates; and a third horizontal plate bent vertically in a direction of a second vertical plate facing at least one end of the pair of second vertical plates, wherein the second horizontal plate and the second vertical plate A slit is formed through the connection edge portion, and in step (c), the coupling piece is vertically bent to the rear of the base plate, and then inserted and fixed in the slit, and the bolt member is fixed to the first horizontal plate in the outer direction of the first horizontal plate. , characterized in that the coupling piece inserted into the slit and the third horizontal plate are coupled to the front side of the case by fastening to continuously penetrate.

In addition, a case including an LED module; and a transmissive plate coupled to the front surface of the case and through which the light of the LED module is transmitted, wherein the transmissive plate is a base plate, a base plate formed by UV printing at points excluding the transmissive pattern on the rear surface of the base plate. 1 opaque layer; a reflective sheet attached to the front surface of the base plate; and a second opaque layer formed on the reflective paper sheet by UV printing and having a cover pattern image having the same shape as that of the transmission pattern, wherein the reflective paper sheet is removed along the edge of the cover pattern image to surround the edge of the cover pattern image As a result, a transmission margin through which the light of the LED module is transmitted is formed, and a coupling piece is formed to extend around the periphery of the base plate, and the case includes: a frame-shaped profile; The back plate is coupled to the back surface of the profile, the LED module is temporarily fixed to the front side; and a fixing jig coupled to the front of the temporarily fixed LED module to fix the LED module to the back board, wherein the profile includes, a first horizontal plate placed vertically on the back board; a pair of first vertical plates bent vertically at the front and rear ends of the first horizontal plate; a pair of second horizontal plates that are vertically bent inwardly at each end of the pair of first vertical plates; a pair of second vertical plates bent vertically at each end of the pair of second horizontal plates; and a third horizontal plate bent vertically in a direction of a second vertical plate facing at least one end of the pair of second vertical plates, wherein the second horizontal plate and the second vertical plate A slit is formed through the connection edge portion, the coupling piece is vertically bent to the rear of the base plate, and then inserted and fixed in the slit, and the bolt member is inserted into the first horizontal plate and the slit from the outer direction of the first horizontal plate. The coupling piece and the third horizontal plate are fastened so as to continuously penetrate to couple the transmission plate to the front surface of the case, and the fixing jig is in the form of a plate, the insertion hole into which the LED module is inserted, and an auxiliary reflective sheet is attached to the front surface. characterized by being

According to the present invention, in the LED traffic sign driven by generating natural energy such as wind power and solar heat, even if the light quantity of the LED module is not sufficiently exhibited due to the low power structure, unnecessary light leakage of the LED module between the case and the transmission plate , by limiting reflection, transmission, etc., intensively guiding the irradiation direction toward the front, and at the same time concentrating the amount of light only with the transmission margin formed along the periphery of the cover pattern image formed on the transmission plate, the amount of light of the LED module is sufficient It is possible to manufacture a traffic sign capable of securing sufficient night visibility by more emphasizing the main information of the traffic sign even in the absence of conditions.

1 is a view showing a process of cutting a base plate.
Figure 2 is a view showing a state in which the first opaque layer is formed on the rear surface of the base plate.
3 is a view showing a process of attaching a reflective sheet to the front of the base plate.
4 is a view showing a state in which the second opaque layer is formed on the reflective sheet.
5 is a diagram illustrating a process of forming a transmission margin by removing a periphery of a cover pattern image.
6 is a view showing the front configuration of the transmission plate.
7 is a view schematically showing a cross-sectional configuration based on the line AA shown in FIG.
8 is a view illustrating a process in which a base plate on which a coupling piece is formed is cut.
9 is a view showing a schematic exploded configuration of an LED traffic sign.
10 is a view showing a process in which the bolt member is fastened in the step of coupling the transmission plate to the case.
11 is a view schematically showing the overall cross-sectional configuration of the LED traffic sign.
12 is a view showing a process of preparing a transmission plate.
13 is a view showing a process of preparing a case.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. Detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

The manufacturing method of an LED traffic sign (hereinafter referred to as a traffic sign) according to the present invention is largely the step of providing the transmission plate 110, the step of providing the case 120 including the LED module 122 therein, and the It consists of a step of coupling the transmission plate 110 to the front surface of the case (120).

First, in order to prepare the transmission plate 110, as shown in FIG. 1, the transparent synthetic resin substrate m1 is cut in a predetermined shape to form the base plate 111 (S10). The transparent synthetic resin substrate m1 may be a PC panel (polycarbonate panel), and on this synthetic resin substrate m1, the base plate 111 is cut in a circular or square shape in consideration of the shape of a typical traffic sign. can be extracted.

Next, as shown in FIG. 2 , the first opaque layer 112 is UV-printed on the back surface of the extracted base plate 111 at points excluding the transmission pattern 113 ( S20 ). The rear surface of the base plate 111 becomes a structure in which the overall area is opaque by the first opaque layer 112 , and in the case of the transmission pattern 113 , the UV printing does not reach, and it is localized on the rear surface of the base plate 111 . It has a transparent structure so that the light of the LED module 122 to be described later can be transmitted therethrough. The transmission pattern 113 may have a design including a figure, an arrow, a warning phrase, etc. which are used symbolically for indication, warning, guidance, etc. in a normal traffic sign.

The first opaque layer 112 makes the reflective surface of the base plate 111 opaque so that the light of the LED module 122 irradiated from the rear direction of the base plate 111 is not reflected from the rear surface of the base plate 111 . , plays a role to be intensively guided to the transmission pattern 113 .

If the rear surface of the base plate 111 is not properly opaque, the light of the LED module 122 is diffused from the base plate 111 , and a problem of concentration in the transmission pattern 113 is lowered.

Next, as shown in FIG. 3 , a reflective sheet 114 is attached to the front surface of the base plate 111 ( S30 ). The reflective sheet 114 may use a reflective sheet that enables normal retroreflection. The reflective sheet 114 may use a reflective sheet that can cover the entire front area of the base plate 111 .

Meanwhile, sandblasting may be performed on the front and rear surfaces of the base plate 111 between steps S10 and S20. That is, before UV printing or the reflective paper sheet 114 is attached to the base plate 111 , the base plate 111 and the reflective paper sheet 114 are subjected to surface treatment to give appropriate roughness to the front and rear surfaces of the base plate 111 . ) to the mechanical bonding force between the first opaque layer 112 may be improved.

Next, as shown in FIG. 4 , the second opaque layer 115 having the cover pattern image 116 having the same shape as the transmission pattern 113 is UV-printed on the reflective sheet 114 ( S40 ). The second opaque layer 115 has a structure that covers the entire front surface of the base plate 111 to which the reflective paper sheet 114 is attached, unlike the first opaque layer 112 that locally forms the transmission pattern 113 . , S40, the front surface of the base plate 111 is completely opaque, so that the transparent pattern 113 of the transparent structure is also not observed from the front surface of the base plate 111 . However, the cover pattern image 116 is formed on the second opaque layer 115 . The cover pattern image 116 has the same shape as the transmission pattern 113 and may be formed on the same line as the transmission pattern 113 . .

The cover pattern image 116 may be distinguished by implementing different colors on the second opaque layer 115 .

For example, the second opaque layer 115 may be configured by configuring the cover pattern image 116 in red or blue, and using the remaining background in yellow or the like.

The sign pattern image 116 may have a design including figures, arrows, warning phrases, and the like, which are used symbolically for indications, warnings, guidance, and the like in a typical traffic sign.

If the transmission pattern 113 is formed in a circular shape on the rear surface of the base plate 111 , a circular cover pattern image 116 may be formed on the same line as the transmission pattern 113 on the front surface of the base plate 111 . .

In this case, the edge of the cover pattern image 116 may be offset by a predetermined distance to the inside of the transparent pattern 113 . Conversely, the transmission pattern 113 may be configured to be offset by a predetermined distance outward from the display pattern image.

For example, if the transmission pattern 113 is formed in a circle having a predetermined diameter, the cover pattern image 116 is a circle having a smaller diameter than this and is formed concentrically with the transmission pattern 113 .

This is to allow the transmission pattern 113 to be more accurately exposed to the removed portion when the edge of the cover pattern image 116 is removed in step S50 to be described later.

Next, as shown in FIG. 5 , the reflective sheet 114 is removed along the edge of the cover pattern image 116 , so that the light of the LED module 122 is transmitted around the edge of the cover pattern image 116 . (117) is formed (S50).

Since the reflective sheet 114 is first attached to the front surface of the base plate 111 and then the second opaque layer 115 is formed on the reflective sheet 114 by UV printing, the second opaque layer 115 is It is not integrally fixed to the base plate 111 , and therefore, when the reflective sheet 114 is removed as much as necessary, the base plate 111 covered by the removed reflective sheet 114 is exposed to the outside through the transmission margin 117 . may be exposed.

That is, in the process of removing the reflective sheet 114 , the UV-printed second opaque layer 115 on the reflective sheet 114 is simultaneously removed to form a transmission margin 117 on the front of the base plate 111 . can

And, since the edge portion of the cover pattern image 116 is removed, the light passing through the transparent transmission pattern 113 is transmitted through the transmission margin 117 to be irradiated to the outside.

When the transmissive plate 110 manufactured in this way is viewed from the front, all parts except for the transmissive margin 117 have an opaque structure, which does not transmit light, and only in step S50, the reflective sheet 114 ), the light is exposed to the outside through only the portion of the transmission margin 117 formed by the removal.

Since the transmissive plate 110 forms an opaque layer on both the front and back surfaces of the base plate 111 , it prevents light from leaking or being transmitted to unnecessary parts, and the transmission formed along the periphery of the cover pattern image 116 . By concentrating the amount of light only with the margin 117, the main information of the traffic sign is more emphasized, enabling more accurate information delivery at night.

Meanwhile, in step S10 described above, the base plate m1 may be cut so that the coupling piece 118 is formed to be expanded around the edge of the base plate 111 . The purpose of forming the coupling piece 118 will be described later.

Next, a process of preparing the case 120 will be described with reference to FIGS. 9 to 11 .

First, the back plate 123 is coupled to the back surface of the profile 121 in the form of a frame (S100). The frame-shaped profile 121 may be provided by bending the iron plate a plurality of times, and may have a figure frame shape such as a square or a circle depending on the shape of the base plate 111 .

For example, the profile 121 is bent vertically downward from the front and rear ends of the first horizontal plate 121a and the first horizontal plate 121a placed vertically on the back plate 123, as shown in FIG. 11 . A pair of first vertical plates 121b formed, a pair of second horizontal plates 121c vertically bent inward from each end of the pair of first vertical plates 121b, the pair of first vertical plates 121b A pair of second vertical plates 121d and a pair of second vertical plates 121d that are vertically bent downwardly from each end of each of the two horizontal plates 121c and a second vertical plate 121d facing at least one end of the pair of second vertical plates 121d It may be exemplified as including a third horizontal plate 121e that is vertically bent in the direction of the second vertical plate 121d.

Accordingly, a supporting jaw having an angle between 90 degrees is formed between the second horizontal plate 121c and the second vertical plate 121d, and the corners of the back plate 123 and the transmission plate 110 are seated on the supporting jaw. It can be supported, in this case, the support jaw serves as a stopper to prevent the back plate 123 and the transmission plate 110 from being pushed into the inside of the profile 121 any longer.

In addition, in the case of the third horizontal plate 121e to which the light of the LED module 122 shines, it is a structure that shields the inner circumferential surface of the profile 121 that is bent a number of times and has a hollow shape inside, and the profile 121 inside is not opened, so that the light of the LED module 122 flows out into the profile 121 so that the amount of light is not reduced.

In this case, the first horizontal plate 121a constitutes the outer perimeter of the profile 121, and the third horizontal plate 121e constitutes the inner perimeter, respectively.

On the other hand, a slit 121f is formed through the connecting edge of the second horizontal plate 121c and the second vertical plate 121d or on the second vertical plate 121d, and as the slit 121f, the above-described base plate ( The coupling piece 118 formed on the edge of the 111 may be inserted. A process in which the case 120 and the transmission plate 110 are coupled will be described later.

Next, the LED module 122 is temporarily fixed to the front of the back plate 123 with an adhesive (S200). Next, the fixing jig 124 is coupled to the front of the temporarily fixed LED module 122 to fix the LED module 122 to the back plate 123 (S300).

In step S200, the LED module 122 may be intensively disposed at a position where the amount of light should be concentrated and temporarily fixed.

In general, when the LED module 122 is fixed using only the adhesive, the adhesive loses adhesive force due to the heat dissipation characteristics of the LED module 122, so that the LED module 122 may be dropped from the position of the back plate 123. However, by additionally fixing the LED module 122 using the fixing jig 124 , it is possible to effectively limit the position movement of the LED module 122 .

At this time, the fixing jig 124 has a plate shape, and an insertion hole 124a into which the LED module 122 is inserted is formed through, and an auxiliary reflective sheet 124b is attached to the front side thereof.

Accordingly, the amount of light applied to the front can be further increased by reflecting the light of the LED module 122 toward the front as well as the fixing action of the LED module 122 . The fixing jig 124 may be fixedly installed on the back plate 123 through the bolt member (B).

The case 120 provided in this way has an open front, and the transmission plate 110 may be coupled to the open front.

At this time, in the process of coupling the transmission plate 110 to the front of the case 120 , first, the coupling piece 118 formed on the edge of the base plate 111 is vertically bent to the rear of the base plate 111 , and then the transmission plate (110) is positioned in the open front of the case 120, the coupling piece 118 is inserted and fixed in the slit (121f).

When the coupling piece 118 is inserted and fixed into the slit 121f, the coupling piece 118 may be completely inserted into the profile 121 in a state parallel to the third horizontal plate 121e.

The fixing force of the transmission plate 110 from the front of the case 120 can be exerted only by inserting and fixing the coupling piece 118 into the slit 121f.

In this state, the bolt member (B) in the outer direction of the first horizontal plate (121a), the first horizontal plate (121a), the coupling piece 118 inserted into the slit (121f) and the third horizontal plate (121e) The transmission plate 110 is coupled to the front surface of the case 120 by fastening it to continuously penetrate.

Accordingly, the bolt member (B) forms its fastening marks only on at least the first horizontal plate 121a and the third horizontal plate 121e of the profile 121, and the transmission plate 110 directly exposed to the outside. ) does not form any fastening marks by the bolt member (B) on the front side, so it does not damage the aesthetics of the traffic sign, or light does not leak through the hole by the bolt, and the transmission plate 110 is the case 120 A structure that is more firmly fastened to the top is provided.

In summary, the present invention is an LED traffic sign driven by generating natural energy such as wind power and solar heat, even if the light quantity of the LED module 122 is not sufficiently exhibited due to the low power structure, the case 120 and the transmission plate ( 110) to limit unnecessary light leakage, reflection, transmission, etc. of the LED module 122, and intensively guide the irradiation direction of light toward the front, and at the same time, the circumference of the cover pattern image 116 formed on the transmission plate 110 By concentrating the amount of light only with the transmission margin 117 formed along can do.

Hereinafter, the structure of the traffic sign manufactured by the above-described method will be described, but since the structure of the traffic sign is also described in the description of the above-described manufacturing method, the structure will be described in a line that outlines the structure.

The traffic sign according to the present invention may be largely defined as including a case 120 and a transmission plate 110 as shown in FIGS. 11 to 13 .

First, the case 120 constitutes the overall appearance of the traffic sign, the LED module 122 is built into the interior, and supports the transmission plate 110 in the front.

More specifically, the case 120 is a frame-shaped profile 121, coupled to the rear surface of the profile 121, and the back plate 123 to which the LED module 122 is adhesively and temporarily fixed to the front and the temporarily fixed. The LED module 122 may be exemplified as including a fixing jig 124 for fixing the LED module 122 to the back plate 123 by being coupled to the front.

The LED module 122 may be coupled with a projection lens that increases the straightness of light.

Since the profile 121 and the fixing jig 124 follow the structure described in the above-described manufacturing method, a detailed description thereof will be omitted.

Next, the transmission plate 110 is coupled to the front surface of the case 120 and the light of the LED module 122 provided in the case 120 can be transmitted.

The transmission plate 110 is a base plate 111, a first opaque layer 112 formed by UV printing to a point excluding the transmission pattern 113 on the rear surface of the base plate 111, and the base plate 111. A second opaque layer 115 formed by UV printing on the reflective paper sheet 114 attached to the front of the reflective paper sheet 114 and having a cover pattern image 116 having the same shape as the transmission pattern 113 The reflective sheet 114 is removed along the edge of the cover pattern image 116 to form a transmission margin 117 through which the light of the LED module 122 is transmitted around the edge of the cover pattern image 116 have a structure

In particular, the coupling piece 118 is extended around the edge of the base plate 111, the coupling piece 118 is vertically bent to the rear of the base plate 111, and then inserted and fixed into the slit 121f, The bolt member (B) in the outer direction of the first horizontal plate (121a) to continuously penetrate the first horizontal plate (121a), the coupling piece 118 and the third horizontal plate (121e) inserted into the slit (121f). By fastening, the transmission plate 110 may be coupled to the front surface of the case 120 .

The embodiments of the present invention described above are merely exemplary, and those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, it will be well understood that the present invention is not limited to the form mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. Moreover, it is to be understood that the present invention covers all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

110: transmission plate
120: case

Claims (5)

(a) providing a transmissive plate, (b) providing a case including an LED module therein, and (c) coupling the transmissive plate to the front of the case, and a method for manufacturing the same In
The step of providing the transmission plate,
(a1) forming a base plate by cutting a transparent synthetic resin substrate into a predetermined shape;
(b1) printing a first opaque layer on the back surface of the base plate at a point excluding the transmission pattern;
(c1) attaching a reflective sheet to the front surface of the base plate;
(d1) printing a second opaque layer having a cover pattern image having the same shape as that of the transmission pattern on the reflective sheet; and
(e1) removing the reflective sheet along the edge of the cover pattern image to form a transmission margin through which the light of the LED module is transmitted around the edge of the cover pattern image; . The method according to claim 1,
A method of manufacturing an LED traffic sign, characterized in that the edge of the sign pattern image is offset by a predetermined distance to the inside of the transmission pattern. 3. The method according to claim 2,
A method of manufacturing an LED traffic sign, characterized in that sandblasting is performed on the front and back surfaces of the base plate between the steps (a1) and (b1). 4. The method according to claim 3,
In the step (a1), the substrate is cut so that the coupling piece is formed to expand around the edge of the base plate,
The step of preparing the case,
(a2) bonding the back plate to the back of the profile in the form of a frame;
(b2) temporarily fixing the LED module to the front of the back plate with an adhesive; and
(c2) fixing the LED module to the back board by coupling a fixing jig to the front of the temporarily fixed LED module;
The profile is
a first horizontal plate placed perpendicular to the back plate;
a pair of first vertical plates bent vertically at the front and rear ends of the first horizontal plate;
a pair of second horizontal plates that are vertically bent inwardly at each end of the pair of first vertical plates;
a pair of second vertical plates bent vertically at each end of the pair of second horizontal plates; and
a third horizontal plate bent vertically in the direction of the second vertical plate facing at least one end of the pair of second vertical plates; and
A slit is formed through the connection edge of the second horizontal plate and the second vertical plate,
In step (c), the coupling piece is vertically bent to the rear of the base plate, and then inserted and fixed into the slit, and the bolt member is inserted into the first horizontal plate, the coupling piece inserted into the slit, and the third bolt member from the outer direction of the first horizontal plate. A method of manufacturing an LED traffic sign, characterized in that the transmissive plate is coupled to the front side of the case by fastening the horizontal plate to pass through it continuously. a case including an LED module; and
It includes a; is coupled to the front of the case and transmits the light of the LED module;
The transmission plate,
base plate,
a first opaque layer formed by printing on the rear surface of the base plate at points excluding the transmission pattern;
a reflective sheet attached to the front surface of the base plate; and
a second opaque layer formed by printing on the reflective sheet and having a cover pattern image having the same shape as that of the transmission pattern;
The reflective sheet is removed along the edge of the cover pattern image to form a transmission margin through which the light of the LED module is transmitted around the edge of the cover pattern image,
A coupling piece is formed to expand around the edge of the base plate,
The case is
profile in the form of a frame;
The back plate is coupled to the back surface of the profile, the LED module is temporarily fixed to the front side; and
It includes; a fixing jig coupled to the front of the temporarily fixed LED module to fix the LED module to the back board;
The profile is
a first horizontal plate placed perpendicular to the back plate;
a pair of first vertical plates bent vertically at the front and rear ends of the first horizontal plate;
a pair of second horizontal plates that are vertically bent inwardly at each end of the pair of first vertical plates;
a pair of second vertical plates bent vertically at each end of the pair of second horizontal plates; and
a third horizontal plate bent vertically in the direction of the second vertical plate facing at least one end of the pair of second vertical plates; and
A slit is formed through the connection edge of the second horizontal plate and the second vertical plate,
The coupling piece is vertically bent to the rear of the base plate and then inserted and fixed into the slit, and the bolt member is continuously connected to the first horizontal plate, the coupling piece inserted into the slit and the third horizontal plate from the outer direction of the first horizontal plate. By fastening it so that it penetrates, the transmission plate is coupled to the front side of the case,
The fixing jig is in the form of a plate, an insertion hole through which the LED module is inserted, and an auxiliary reflective sheet is attached to the front side of the LED traffic sign.

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