KR200360768Y1 - Light effusing structure having light-emitting layer of metallic tone - Google Patents

Abstract

The present invention relates to a light emitting structure using a light emitting diode, and more particularly, to a light emitting structure having a light emitting layer having a metallic tone and solving a problem of color heterogeneity of the light emitting structure. The light emitting structure for emitting light using the light emitting diode of the present invention includes a metal mold for forming an external shape of the light emitting structure, a plurality of light emitting diodes provided on an inner bottom of the mold, and a plurality of light emitting diodes. A light dispersing layer formed on the light emitting diode and dispersing light from the light emitting diode, a light transmitting layer formed on the light dispersing layer and uniformly transmitting light emitted from the light dispersing layer, and on the light transmitting layer And a light emitting layer of metallic tones formed so that light emitted from the light transmitting layer exhibits metallic tones. The present invention is provided with a light emitting layer of a metallic tone to solve the dissimilarity of color, improve the visual aesthetics of signs or billboards, and further enhance the quality of signs or billboards, and at the same time change the color and It can satisfy customer's desire for metallic color.

Description

LIGHT EFFUSING STRUCTURE HAVING LIGHT-EMITTING LAYER OF METALLIC TONE}

The present invention relates to a light emitting structure using a light emitting diode (LED) that can be used for signs, indoor and outdoor advertisements, signs, or fancy products, and in particular, has a metallic tone emitting layer to solve the problem of color heterogeneity of the light emitting structure. The solved light diverging structure.

Conventionally, neon lamps have been mainly used for signs, advertisements, neon signs, and the like. However, the neon lamp is exposed to the neon tube, so there is a high risk of damage, and because of the use of high voltage, there is a problem that not only has a lot of power consumption, but also has a considerable risk, and has a weak durability and difficult to use underwater. Therefore, in the technical field to which the present invention belongs, a light emitting structure using a light emitting diode is provided to replace a conventional neon lamp. In the light emitting structure using a conventional light emitting diode, a light emitting diode is installed on the bottom of a molding mold and a synthetic resin is poured or a light emitting diode is inserted into a circuit board such as a printed circuit board (PCB) and then the top of the molding mold is used. After positioning, the resin is poured and cured. However, the prior art has a problem that the weight of the light emitting structure becomes too heavy if the thickness of the light emitting structure is not properly adjusted, and thus the work is inconvenient when the sign or billboard having the light emitting structure is installed at a high place. There is a problem that it is difficult to provide a light emitting surface of sufficient brightness and various colors.

In addition, in the case of the light emitting structure using the light emitting diode, since the angle of diffusion of the light emitted from the light emitting diode is narrow, the brightness of the sign or advertisement having the light emitting structure is totally darkened, and the portion where the light emitting diode is installed or not is installed. There was a remarkable problem with the difference in contrast. This caused the viewers to see signs or advertisements with a sense of color, and the characters or shapes that the light-emitting diodes were trying to represent when the signs or billboards were viewed from a location other than the front, for example, side or bottom. It caused the problem of being hard to see. Therefore, the light emitting structure using the conventional light emitting diode could be applied only to a large sign or a billboard that is not greatly affected by the viewing angle of the observer, and the problem of the color heterogeneity described above is not greatly highlighted.

In view of these problems, the epoxy resin layer is filled with the light emitting diodes to be embedded, or the transparent acrylic mold is covered on the light emitting diodes so that the light emitted from the light emitting diodes is dispersed so that the entire light emitting surface of the sign or the advertisement is evenly emitted. Techniques have been proposed.

However, such a prior art is usually formed by curing a synthetic resin layer containing a transparent synthetic resin layer and / or a certain fluorescent dye in a metallic molding die, and thus the metallic tone of the metallic mold such as stainless steel, iron plate or brass itself. The color of the synthetic resin layer did not harmonize with each other, there was a heterogeneous sense of color quality, and the metallic color and the color generated by the light emitted from the light emitting diode were mixed with each other, resulting in a drop in the overall visual aesthetics.

An object of the present invention is to solve the problems described above, and to provide a light emitting layer of a metallic tone in a light emitting structure using a light emitting diode, an unpainted metallic mold and light from the light emitting diode The purpose is to solve the heterogeneity of the color quality with the synthetic resin layer filled for dispersion and transmission. In addition, the present invention is to enhance the quality of the sign or billboard by expressing the metallic color by the light emitting layer of the metallic tone, and also to satisfy the customer's desire for changing color and metallic color according to the scattering of light. The purpose is.

1 is a cross-sectional perspective view showing a part of the light diverging structure of an embodiment according to the present invention.

FIG. 2 is a perspective view showing a sign or billboard having a light emitting structure as shown in FIG.

3 is a view of the cut light emitting structure of the embodiment in accordance with the present invention, after cutting the light emitting structure in the cross section.

* Explanation of symbols for main parts of the drawings

10 light emitting structure 20 forming mold

22: bottom of the mold 24: side wall of the mold

30: circuit board 40: light distribution layer

50: light transmitting layer 60: light emitting layer of metallic tone

70: light emitting diode 72: lead

74: head of the light emitting diode

The light emitting structure for emitting light using the light emitting diode of the present invention,

A metallic molding frame forming an outer shape of the light emitting structure;

A plurality of light emitting diodes installed on the inner bottom of the molding die;

A light dispersing layer formed on the plurality of light emitting diodes and dispersing light from the light emitting diodes;

A light transmitting layer formed on the light dispersing layer and uniformly transmitting the light dispersed from the light dispersing layer;

And a light emitting layer of metallic tones formed on the light transmitting layer and allowing light emitted from the light transmitting layer to exhibit metallic tones.

In the light diverging structure of the present invention, the light dispersing layer is preferably a transparent resin layer in which a plurality of light emitting diodes are embedded. The light transmitting layer is preferably a resin layer in which fluorescent dyes or glass powders are blended. More preferably, the light transmitting layer is a synthetic resin layer containing white fluorescent dye. The resin used to form the light dispersing layer and / or light transmitting layer of the light emitting structure of the present invention is characterized in that at least one of epoxy, acrylic, PC, urethane or FRP.

In addition, in the light-emitting structure of the present invention, it is preferable that the light emitting layer of the metallic tone is a resin layer in which powder expressing the metallic tone is mixed. Preferably, gold powder, silver powder, glass powder or a mixture thereof may be used as the powder representing the metallic tone. In general, the light emitting layer of the metallic tone is formed by mixing a powder showing the metallic tone with a synthetic resin and then applying a thin coating on the light transmitting layer to cure the same. Alternatively, the light emitting layer of the metallic tone may be formed by applying a thin layer of liquid synthetic resin on the light transmitting layer, and then scattering the glass powder before the synthetic resin is cured.

In addition, a plurality of light emitting diodes of the light emitting structure of the present invention may be installed in the form of a chip type light emitting diode. In addition, in the light emitting structure of the present invention, a circuit board into which the plurality of light emitting diodes are inserted may be additionally installed on the inner bottom of the molding die.

On the other hand, the metal mold of the light-emitting structure of the present invention is preferably composed of iron plate, stainless steel or brass.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings as examples for description without limitation.

1 to 3, the light emitting structure 10 according to an embodiment of the present invention is a metal forming mold 20 made of iron plate, stainless steel or brass, and installed on the inner bottom of the forming mold 20 A plurality of light emitting diodes 70 (LEDs) and a light dispersing layer 40 formed by pouring a transparent synthetic resin into the metallic molding frame 20 so that a plurality of light emitting diodes 70 are embedded, and curing the same; The light transmitting layer 50 is formed by pouring a synthetic resin containing fluorescent dyes or glass powders on the light dispersing layer 40 and curing them, and gold powder, silver powder, glass powder, or the like on the formed light transmitting layer 50. The light emitting layer 60 of metallic tone formed by apply | coating thinly and hardening | curing the synthetic resin which mixed these mixtures is provided.

The metallic molding frame 20 is a frame forming an outline of a character or a figure constituting the advertisement board, and includes a bottom 22 and a sidewall 24 extending from the bottom 22. Metallic mold 20 may be a metal gloss material such as iron plate, stainless steel or brass, depending on the type of the mold, the light dispersion layer 40, the light transmitting layer 50 and the metallic tone to be described later The resin material, pigment | dye, etc. of the light emitting layer 60 are determined. However, the metallic mold 20 is preferably a translucent or opaque material that does not pass or pass less light to the outside.

The light emitting diode 70 is a light source of the light emitting structure 10, and uses a general light emitting diode having a generally round cylindrical head 74. However, the present invention is not limited thereto. The light emitting diode 70 determines the number of uses according to the area of the light emitting layer 60 of metallic tone, and selects and uses the light emitting diode 70 having appropriate brightness according to the required light intensity. In addition, according to the metallic luster of the metallic mold 20 described above, a light emitting diode 70 of a single color or various colors may be used. In general, when the metallic mold 20 is made of stainless steel, it is preferable to use a light emitting diode 70 that emits white light, and when the metallic mold 20 is brass, it emits yellow light. It is preferable to use the diode 70. The plurality of light emitting diodes 70 may be connected to a predetermined wiring (not shown) through the lead 72 or may be inserted into and connected to a circuit board 30 such as a PCB. In addition, the plurality of light emitting diodes 70 may be provided in the form of a chip type light emitting diode (not shown). On the other hand, the light emitting structure 10 of the embodiment of the present invention discloses a form in which the circuit board 30 into which the plurality of light emitting diodes 70 are inserted is placed on the inner bottom 22 of the molding die 20. . However, the present invention is not limited thereto. Those skilled in the art will connect a plurality of light emitting diodes 70 through the grid 72 using conventional wiring, and withdraw the positive lead and the negative lead of the wiring to the outside of the mold 20 to provide another embodiment of the present invention. It will be understood that it is possible to construct.

On the other hand, the head 74 of the light emitting diode 70 may be located in a direction (upward) away from the bottom 22 of the molding die 20, or the direction facing the bottom 22 (downward) It can also be located. In addition, the head 74 of the light emitting diode 70 may be located laterally.

When the light emitting diode 70 is inserted into and connected to a circuit board 30 such as a PCB, the circuit board 30 into which the light emitting diode 70 is inserted is placed on the bottom 22 of the forming mold 20. Preferably, an insulating sheet is placed under the circuit board 30 or subjected to an insulating coating process. Two leads 72 provided under the light emitting diode 70 are fitted to the circuit board 30 and joined by soldering or the like. At this time, since the circuit board 30 is printed with a circuit, a separate connection wire is not required, but the circuit may be connected with a connection wire as necessary.

In general, the power source may be a DC power source or an AC power source. Therefore, after selecting a power source according to the purpose, a light emitting diode 70, a light emitting wiring (not shown), or a circuit board in which the light emitting diode 70 is inserted ( Connect 30) and supply proper power.

The light dispersion layer 40 is formed to fill up to the head portion 74 of the plurality of light emitting diodes 70, and is generally made of a transparent synthetic resin material. The light dispersion layer 40 is formed by pouring a liquid transparent synthetic resin material to a height such that the head portion 74 of the light emitting diode 70 is sufficiently submerged, and then molding the synthetic resin by natural curing or heat curing. At this time, the synthetic resin that can be used as the material of the light dispersion layer 40 is a molding epoxy, acrylic, PC, urethane, FRP and the like. Such a synthetic resin material may be a one-component type (hardened at a high temperature in one liquid molding furnace, etc.) to be cured at high temperature, or a two-component type (mixed two liquids and cured at room temperature) to be cured at room temperature. The light dispersion layer 40 is usually made of a transparent synthetic resin material, so that light emitted from the light emitting diode 70 can be dispersed by refraction and scattering. Therefore, various problems caused by the narrow diffusion angle of the light emitted from the light emitting diode 70 can be solved. In addition, the light distribution layer 40 serves to protect the light emitting diode 70 by completely filling the head 74 of the light emitting diode 70. That is, the light dispersion layer 40 is filled in the empty space inside the molding die 20, and then naturally cured or heat cured so that the light emitting diode 70 and the wiring (not shown) or the light emitting diode 70 are inserted. It serves to fix and / or support the circuit board 30.

The light transmitting layer 50 is made of a synthetic resin material in which fluorescent pigments or glass powders are blended. In general, when the above-mentioned metallic mold 20 is made of stainless steel or brass, the light transmitting layer 50 is a synthetic resin material in which white fluorescent dye is mixed so that the light dispersed in the light dispersing layer 40 may be diffused. It is preferable to make. However, those skilled in the art will appreciate that the light transmitting layer may be a synthetic resin material in which fluorescent dyes of other colors other than white fluorescent dyes are mixed, or transparent synthetic resin material in which glass powder is blended, depending on the kind of metal gloss of the metallic mold 20 described above. It will be understood that 50) can be constructed. When the light transmitting layer 50 is formed, fluorescent colors of various colors may be mixed or glass powder may be mixed to enhance a light transmitting effect of the light transmitting layer 50 or to emit light of a desired color. The light transmitting layer 50 is formed by curing the light dispersing layer 40, and then a synthetic resin material containing white or different colors of fluorescent dyes or glass powder as described above up to a predetermined height in the mold 20 After pouring, the synthetic resin is molded by natural curing or heat curing. At this time, the synthetic resin that can be used as the material of the light transmitting layer 50 is epoxy, acrylic, PC, urethane, FRP, etc. for molding similar to the light dispersing layer 40, the one-component type that is cured at high temperature or at room temperature Two-part form can be used. The synthetic resin of the light transmitting layer 50 may be the same kind as the synthetic resin used for the light dispersing layer 40, or may be of another kind. In this case, in order to increase the dispersion and transmission effect of light from the light emitting diode 70, the light dispersion layer 40 and the light transmission layer 50 may be leveled.

The light emitting layer 60 of the metallic tone may be a powder representing a metallic tone, for example, a glass powder whose color changes due to scattering of light incident from the light emitting structure 10 of the present invention, a powder of a pearl tone, Or it consists of a synthetic resin material mixed with metallic gold or silver powder. On the other hand, the term "metallic tone" used in the specification and claims of the present invention is used as a broad meaning encompassing both the case of changing the color in response to the reflection of light in addition to the metal tone of the narrow meaning, and the case of showing the pultone. The metallic tone emitting layer 60 mixes glass powder, pearl tone powder, or metal tone gold or silver powder with a liquid synthetic resin in an appropriate ratio, and then the synthetic resin into which the powder 62 is incorporated. It is formed by applying a thin coating on the light transmitting layer 50 described above (curing (natural curing or heat curing)) (see Fig. 3).

In the case where the above-described metal forming mold 20 is made of stainless steel, the silver powder of metallic tone and the silver powder of pultone are mixed in the same ratio for harmony with the metal tone of stainless steel, and then mixed with the liquid transparent synthetic resin. Apply lightly on the light transmitting layer 50 to cure. If the metallic mold 20 is brass, fine particles of gold powder of metallic tones are mixed with a liquid transparent synthetic resin in order to be in harmony with the metallic tone of the brass, and then lightly coated on the light transmitting layer 50. Harden. However, it is noted that the present invention is not limited to powders exhibiting this kind of metallic tone. Alternatively, there is a method in which a liquid synthetic resin is first applied thinly on the light transmitting layer 50, and then the glass powder is scattered before the synthetic resin is cured. In this case, when the light incident from the outside of the light emitting structure 10 hits the glass powder, it is scattered to obtain the effect of changing the color. The use of the glass powder has the effect of increasing the strength of the synthetic resin constituting the light emitting layer 60 in addition to the light scattering effect of the light emitting layer 60 of the metallic tone. On the other hand, even when the metallic mold is made of a material other than stainless steel or brass, it is possible to form the light emitting layer 60 of the metallic tone in substantially the same manner as described above. In this case, it is preferable to apply a thin layer of the liquid synthetic resin first and then to disperse the glass powder before the synthetic resin is cured, rather than the method of mixing and then applying the powder 62 showing the metallic tone to the liquid synthetic resin.

The present invention, by providing the light emitting layer 60 of such a metal tone, the sign or billboard displays a luxurious metallic tone during the day, the color tone of the metallic molding of the metallic molding frame itself and the color of the synthetic resin layer does not harmonize with each other, the sense of color quality This problem has been solved. In addition, at night, the light emitted from the light emitting diode 70 exhibits a soft pastel tone color, and the metallic color of the mold itself and the color generated by the light emitted from the light emitting diode do not mix with each other, thereby providing excellent color and visual aesthetics. Got out.

Although the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the accompanying drawings and the disclosed embodiments. Those skilled in the art will appreciate that modifications can be made in accordance with the spirit of the present invention, and such modifications also fall within the scope of the present invention.

The present invention solves the visual aesthetics of signs or billboards by eliminating the heterogeneity of color quality between the unpainted metallic molding frame and the resin layer filled for light dispersion and transmission from the light emitting diode by providing a light emitting layer of metallic tone. Etc. can be improved. In addition, the present invention can express the metallic color by the light emitting layer of the metallic tone to further enhance the quality of signs or billboards, and at the same time satisfy the customer's desire for changing colors and metallic colors according to light scattering. .

Claims (12)

In the light emitting structure for emitting light using a light emitting diode, A metallic molding frame forming an outer shape of the light emitting structure; A plurality of light emitting diodes installed on the inner bottom of the molding die; A light dispersing layer formed on the plurality of light emitting diodes and dispersing light from the light emitting diodes; A light transmitting layer formed on the light dispersing layer and uniformly transmitting the light dispersed from the light dispersing layer; And a light emitting layer of metallic tones formed on the light transmitting layer and allowing light emitted from the light transmitting layer to exhibit metallic tones. The method of claim 1, The light dispersing layer is a light-emitting structure, characterized in that the transparent resin layer to embed the plurality of light emitting diodes. The method of claim 1, The light transmitting layer is a light emitting structure, characterized in that the resin layer containing a fluorescent pigment or glass powder (glass powder). The method of claim 3, The light transmitting layer is a light emitting structure, characterized in that the synthetic resin layer is blended with white fluorescent dye. The method according to any one of claims 2 to 4, And the resin used to form the light scattering layer or the light transmitting layer is at least one of epoxy, acrylic, PC, urethane or FRP. The method according to any one of claims 1 to 4, The light emitting layer of the metallic tone is a light emitting structure, characterized in that the resin layer is mixed with the powder representing the metallic tone. The method of claim 6, Light emitting structure, characterized in that gold powder, silver powder, glass powder or a mixture thereof is used as the powder representing the metallic tone. The method according to any one of claims 1 to 4, The light emitting layer of the metallic tone is a light-emitting structure characterized in that the powder is a metallic tone is formed by mixing with a synthetic resin and then thinly coated and cured on the light transmitting layer. The method according to any one of claims 1 to 4, The light emitting layer of the metallic tone is formed by a method of thinly applying a liquid synthetic resin on the light transmitting layer, and then scattering the glass powder before the synthetic resin is cured. The method according to any one of claims 1 to 4, The plurality of light emitting diodes are light emitting structure, characterized in that installed in the form of a chip-shaped light emitting diode. The method according to any one of claims 1 to 4, And a circuit board on which the plurality of light emitting diodes are inserted is further installed on an inner bottom of the mold. The method according to any one of claims 1 to 4, The metallic mold is a light diverging structure, characterized in that consisting of iron plate, stainless steel or brass.