KR101401067B1 - Illuminating device and the method of manufacturing the same - Google Patents

Abstract

The present invention relates to an illuminating apparatus and a method for manufacturing the same. The illuminating apparatus includes an illuminating unit which emits light; a transparent portion which is coupled to one side of the illuminating unit and includes at least one protruding portion to transmit light, emitted from the illuminating unit, through the protruding portion; an opaque portion which is coupled to a space portion formed by the protruding portion to partially block the light transmitted through the transparent portion; and a plated portion which is formed on the surface of the opaque portion. The illuminating apparatus can be applied as an interior material of a car to increase the luxuriousness of the car interior.

Description

FIELD OF THE INVENTION [0001] The present invention relates to an illumination device and a method of manufacturing the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a lighting device, and more particularly, to an illumination device that is applied to an interior material of an automobile to enhance a sense of quality of a car interior and a method of manufacturing the same.

The global automotive industry faces a strong demand from consumers for eco-friendliness, high quality, high durability, and high sensitivity. Concretely, consumers are interested in small-sized cars and hybrid cars in terms of environment-friendly and energy-saving, while interest in high-quality luxury cars that can provide high-quality and mental satisfaction is also increasing.

In Europe and the United States, high quality and high quality are treated as different concepts. If quality above the expectation of consumers is high quality, high quality is added with high quality and sensitivity, which is considered to be very related to brand image of manufacturer.

In recent years, not only the appearance of the automobile but also the effect of the interior material on the quality of the vehicle has been increasing. In the case of the automobile interior material, the kinds of the usable materials are limited. Therefore, Research is underway to increase the sense.

Particularly, the lighting parts mounted on the interior material of the automobile have a tendency to increase the quality of the interior of the automobile and to be applied as a hidden type in order to produce a soft and luxurious feeling.

However, conventional hidden type illumination parts applied to buttons, dials, and the like have a problem in that the quality of the interior material is somewhat reduced due to the illumination by laser cutting after being applied to the plastic injection molding.

In addition, recently, automotive interior materials have been upgraded to real aluminum, and lighting parts mounted on the rear surface of the real aluminum to realize a metal feel have been applied to some luxury vehicles. However, real aluminum itself is costly and applied for aluminum processing There is a problem that the cost of the press-working mold for each part shape is also very high, which is not economical.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems occurring in the prior art. Transparent portion; An opaque part and a plating part in order, and a metal feeling is given through a plating part to replace the real aluminum, thereby reducing the cost and realizing illumination through the unplated transparent part, thereby increasing the quality of the interior parts of vehicles. The present invention is intended to provide a method of controlling the above-mentioned method

According to an aspect of the present invention, there is provided an illumination device including: an illumination unit emitting light; A transparent portion coupled to one side surface of the illumination portion and including at least one protrusion to transmit light emitted from the illumination portion through the protrusion; An opaque portion coupled to the space formed by the protrusions to block a part of the light transmitted through the transparent portion; A plating part formed on a surface of the opaque part; And a control unit.

In this case, the transparent portion may include at least one component selected from the group consisting of polycarbonate resin, polymethylmethacrylate resin, acrylic resin, ester resin and styrene resin, and the transparent portion may have a transmittance of 95% .

It is also preferred that the opaque portion comprises at least one component selected from the group consisting of acrylonitrile-butadiene-styrene resin, polycarbonate / acrylonitrile-butadiene-styrene resin, polypropylene and polyamide.

In this case, when the non-transparent portion includes the polyamide component, it is more preferable that the opaque portion contains 25 to 35% by weight of the filler based on the total opacifying weight.

According to an embodiment of the present invention, the opaque portion may include an acrylonitrile-butadiene-styrene resin, and the transparent portion may include a polycarbonate resin or a polymethylmethacrylate resin.

It is preferable to further include a step located between the transparent part and the non-transparent part, wherein the step width is more preferably 0.5 to 1.5 mm and the height h is 0.3 to 1.3 mm.

The plating portion may include a chromium plating layer and a nickel plating layer positioned between the chromium plating layer and the opaque portion, and the chromium plating layer may include hexavalent chromium or trivalent chromium, , A semi-bright nickel plated layer, a matte nickel plated layer, and an MP nickel plated layer.

The illumination unit includes a light leakage prevention case 12; A reflective sheet 13 sequentially stacked on the light leakage prevention case 12 and the light source 11 provided inside the light leakage prevention case 12; A light guide plate 14; And a clear lens (15).

According to still another aspect of the present invention, there is provided a method of manufacturing a lighting apparatus, including the steps of: injecting a transparent part including at least one projecting part by using a mold, and injecting and molding an opaque part into a space part formed by the projecting part ; A second step of forming a plating part on the surface of the opaque part; A third step of mounting the illumination part on the opposite side coupled with the transparent part and the opaque part; .

The effect of the present invention having the above-described structure can replace a real aluminum part by realizing a metal feeling equivalent to that of real aluminum for an illumination part applied as an interior material, thereby reducing a cost.

In addition, since the lighting part according to the present invention includes a plating part, there is an advantage that various metallic feelings can be realized depending on the kind of plating such as gloss, matte, and semi-gloss.

Further, according to the present invention, a continuous injection process can be used in one metal mold, and a plurality of products can be simultaneously plated through a plating jig, thereby reducing the processing time and production cost compared to real aluminum .

1 is a longitudinal sectional view schematically showing a lighting apparatus according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view illustrating an illumination unit according to an embodiment of the present invention.
3 is a view showing a step according to the present invention as an embodiment.
4 is a view showing the structure of the plating section of the present invention as an embodiment.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

[Lighting Device]

In one aspect, the present invention provides a lighting system comprising: an illumination unit (10); A transparent portion 20; Opaque portion (30); And a plating unit 40 in this order. There is no limitation on the use of the above lighting device, but it is preferably used as a vehicle interior material.

1 is a longitudinal sectional view schematically showing a lighting apparatus according to an embodiment of the present invention.

As shown in the figure, the illumination device includes an illumination unit 10 for emitting light; A transparent portion 20 coupled to one side of the illumination portion 10 and including at least one protrusion 25 to transmit light emitted from the illumination portion 10 through the protrusion 25; An opaque portion 30 coupled to the space portion 35 formed by the protrusion 25 to block a part of the light transmitted through the transparent portion 20; A plating unit 40 formed on the surface of the non-transparent portion 30; Each of which will be described in detail below.

1. The illumination unit (10)

The illumination unit 10 includes a light source 11 and emits light. The illumination unit 10 is not limited in shape and type, and includes all illumination units 10 commonly used in a vehicle interior.

FIG. 2 is a cross-sectional view illustrating an illumination unit according to an embodiment of the present invention. Referring to FIG. 2, the illumination unit 10 includes a light leakage prevention case 12; A light source 11 installed in the light leakage prevention case 12; A reflection sheet 13 sequentially laminated on the light leakage preventing case 12; A light guide plate 14; And a clear lens (15).

Specifically, although the light source 11 is not particularly limited, an LED may be used, and a different color may be used depending on the type and design of the component.

The light guide plate 14 is disposed to allow light from the light source 11 to be incident thereon and uniformly diffuses the incident light to emit light through the front surface.

The light leakage prevention case 12 is a cover structure for shielding the light leakage of the light emitted from the light guide plate 14 so as to cover the entire light source 11, the light guide plate 14, the reflection sheet 13 and the clear lens 15 And it can be fastened to the parts using bolting inside the parts.

On the other hand, the reflective sheet 13 reflects light emitted from the light guide plate 14 to improve the light emitting performance of the light guide plate 14. [

The clear lens 15 protects the light guide plate 14 and the illumination unit 10, and a transparent material is preferably used for transmitting light. For example, a polycarbonate resin may be used.

2. Transparent portion (20)

The transparent portion 20 includes at least one protruding portion 25 and is coupled to one side of the illuminating portion 10 to transmit light emitted from the illuminating portion 10 through the protruding portion 25 And it is preferable that the transmittance is 95% or more in consideration of the required illuminance in the vehicle. More specifically, a polycarbonate resin (PC resin), a polymethylmethacrylate resin (PMMA resin), an acrylic resin , An ester-based resin, and a styrene-based resin. In this case, when two or more materials are used, the transmittance of the product after injection is taken into consideration in consideration of the birefringence of each component. 95% or more. The PC resin is preferably a diffusion PC resin including a diffusing agent, but a general transparent PC resin can also be used.

The transparent portion 20 may include at least one projecting portion 25 in consideration of the illumination and the coupling relation with the opaque portion 30.

3. The opaque part (30)

The non-transparent portion 30 is coupled to the space portion 35 formed by the protruding portion 25 to block a part of the light transmitted through the transparent portion 20 and is a portion where plating is actually performed, Butadiene-styrene resin (ABS resin), polycarbonate / acrylonitrile-butadiene-styrene resin (hereinafter referred to as " acrylonitrile-butadiene-styrene resin " It is preferable to include at least one component selected from the group consisting of polypropylene (PP), polyamide (PA), and the like, and polycarbonate / acrylonitrile-butadiene-styrene resin.

At this time, in order to improve the plating adhesion of the non-transparent portion 30, it is preferable that the ABS resin contains about 25% by weight or more of butadiene. When the opaque portion 30 includes PA, The non-transparent portion 30 preferably contains a filler such as a mineral filler or a glass filler in an amount of 25 to 35 wt%, more preferably 30 wt%, based on the total weight of the opaque portion 30.

The opaque portion 30 and the transparent portion 20 are preferably made of a material compatible with each other in order to impart an adhesive force to the interface between the two materials after the injection. The transparent portion 20 preferably includes a PC or a PMMA resin.

The opaque portion 30 is preferably formed using a plating grade in consideration of the adhesion with the plating portion 40 to be formed thereafter. The molded product of the raw material using the colorant (pigment) is not suitable for plating, .

The transparent portion 20 includes at least one protruding portion 25 so that a space portion 35 is formed in the space excluding the protruding portion 25. The opaque portion 30 is formed in the space portion 35, . ≪ / RTI >

That is, in the case of the above structure, light emitted from the illuminating unit 10 is transmitted through the transparent unit 20, and then part of the light is blocked by the opaque unit 30 coupled to the space unit 35 , And unblocked light is emitted to the outside through the projecting portion (25).

The transparent portion 20 and the opaque portion 30 are manufactured as a continuous double injection. In order to prevent an overflow on the material of the opaque portion 30 when the transparent portion 20 is injected, Preferably, the apparatus further comprises a step 31 located between the transparent part 20 and the opaque part 30. [

FIG. 3 is a view showing a step according to the present invention as an embodiment. In order to prevent overflow efficiently, the width w of the step 31 is 0.5 to 1.5 mm and the height h is 0.3 to 1.3 mm Is more preferable.

4. The plating unit 40

The plating portion 40 is formed on the surface of the opaque portion 30 to increase the quality of the illumination device and includes a chromium plating layer and a nickel plating layer positioned between the chromium plating layer and the opaque portion 30 And the nickel plated layer may include at least one layer selected from the group consisting of a glossy nickel plated layer, a semi-bright nickel plated layer, a matte nickel plated layer, and an MP nickel plated layer.

FIG. 4 is a view showing the structure of the plating section of the present invention as an embodiment. As shown in FIG. 4, a chemical nickel plating layer having a thickness of 0.2 to 0.6 .mu.m for imparting conductivity; A copper plating layer having a thickness of 10 to 30 占 퐉 to serve as a shock absorbing buffer; A semi-bright nickel plated layer of 12 to 20 占 퐉 thickness for corrosion prevention and high potential; A glossy nickel plated layer of 8 to 12 占 퐉 thickness for improving gloss and corrosion resistance; An MP nickel plated layer having a thickness of 0.8 to 1.2 탆 for imparting corrosion resistance by dispersing a corrosion current; A chromium plating layer having a thickness of 0.25 to 0.5 mu m which improves corrosion resistance and abrasion resistance and the like are laminated in this order. In order to give a feeling of luxury, plating of satin, bellows or the like is given instead of a glossy nickel layer Surface gloss can be adjusted.

On the other hand, the chromium plating layer may be selected from trivalent chromium or hexavalent chromium, depending on the product design.

[Manufacturing Method of Lighting Device]

In another aspect, the present invention relates to a method of manufacturing a lighting device having the above structure.

The transparent portion 20 including at least one protrusion 25 is injection molded by using a mold and then the mold is rotated so that the opaque portion 30 is formed in the space portion 35 formed by the protrusion 25, (First step).

That is, the present invention has an advantage that a product can be injected in a continuous process in a mold. In this case, it is preferable to use a material compatible with each other in order to impart an adhesive force to the interface between the two materials after the injection, and it is possible to use each of the above-mentioned materials. More preferably, the opaque portion 30 is made of ABS resin The transparent portion 20 may include PC or PMMA resin.

In one embodiment, when the material of the transparent portion 20 is PC and the material of the opaque portion 30 is ABS resin, injection can be performed under the conditions shown in Table 1 below.

Melting temperature
(° C) Cylinder temperature
(° C) Nozzle temperature
(° C) Mold temperature
(° C) Back pressure
(bar) dry PC 280-320 280-320 280-300 80-120 50 to 150 120 ° C / 3 hr ABS 220-250 200 to 240 220-250 40 to 70 50 to 150 80 ° C / 3hr

Since the opaque portion 30 in which the plating portion 40 is formed has a large difference in linear expansion coefficient between the metal and the resin, a peeling phenomenon may occur between the plated metal layer and the resin layer due to the environmental change of the product. When the fluidity of the resin is low, residual stress is generated inside the molded product due to unreasonable molding conditions, and the dispersibility of the rubber in the resin is lowered. For this reason, as the rubber is compounded in the flow direction of the resin, the rubber distribution is shifted and the etching condition becomes poor during the plating process. As a result, the appearance of the plating product becomes poor, Will influence. Therefore, it is possible to minimize the generation of residual stress during molding by increasing the range of molding conditions that greatly affect the plating characteristics, thereby improving the etching state during the plating process and suppressing generation of gas by thermal decomposition, it is desirable to prevent apparent problems, such as an unsteadiness, In consideration of this point, it is preferable that the non-transparent portion 30 is injection-molded so that the injection temperature is as high as possible and the injection speed and pressure are as low as possible in order to reduce deformation of butadiene and reduce the residual stress of the resin.

In this case, it is preferable that the thickness of the opaque portion 30 is 0.5 [mu] m so that the thickness of the opaque portion 20 is too thin to allow the light to spread inside, To 4 mm. Thickness shall be uniformly designed and the thickness deviation shall be within 15% of the average thickness.

A step 31 is formed between the transparent portion 20 and the non-transparent portion 30 to prevent an overflow on the material of the opaque portion 30 when the transparent portion 20 is injected The width w of the step 31 is preferably 0.5 to 1.5 mm and the height h is 0.3 to 1.3 mm in order to prevent overflow efficiently.

The materials usable for the transparent portions 20 and the opaque portions 30 are as described above.

After the injection molding, the plating part 40 is formed on the opaque part 30. (Second step)

Specifically, contaminants on the surface of the non-transparent portion 30 are removed, and degreasing and finishing are performed to adjust the surface.

The frontal treatment is a process of correcting the butadiene form on the surface of the injection molded product, and causes problems such as unplated and poor adhesion to the plating at the time of failure. Therefore, after the process, the glacial acid test is carried out to determine whether or not there is a defect. Concretely, non-acetone, methyl ethyl ketone, and dioxyl acid can be mixed with an alkaline degreasing solution and subjected to degreasing at the same time while being treated at 50 to 60 ° C.

Thereafter, etching is performed to elute butadiene on the surface of the injection molding to give a plating adhesion force. It may be carried out with a solution of chromic acid anhydride and sulfuric acid, and the etching is preferably performed for 15 minutes to 30 minutes. If the test is conducted for less than 15 minutes, sufficient butadiene dissolution does not occur. If the test is carried out for 30 minutes or more, the surface of the injection mold will sink and the adhesion force will decrease. If the surface of the molding is corroded or deformed within this time, the etching time is reduced. Further, when the throughput of the etching solution is 100 dm 2 / L or more, the dissolution and accumulation amount of the B component increases and plating is not performed, so it is preferable to exchange the solution.

After the etching, the chromic acid on the resin surface is removed through a neutralization process to remove the etching solution component on the surface of the product.

Thereafter, a palladium catalyst, which is a catalyst for chemical plating, is attached to the resin surface and an activation process is performed to metallize the palladium catalyst.

After the preprocessing process, the plating unit 40 is formed on the non-transparent portion 30, and the structure of the plating unit 40 is the same as that described above.

After the plating unit 40 is formed as described above, the illumination unit 10 is mounted on the opposite side of the transparent unit 20 and the opaque unit 30 (step 3)

The structure of the illumination unit 10 is the same as that described above.

Although the present invention has been described in connection with the specific embodiments of the present invention, it is to be understood that the present invention is not limited thereto. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. Various modifications and variations are possible.

10: illumination part 11: light source
12: light leakage preventing case 13: reflective sheet
14: light guide plate 15: clear lens
20: transparent part 25:
30: opaque portion 31: stepped portion
35: Space part 40: Plating part
w: step width h: step height

Claims (13)

An illumination unit 10 for emitting light;
A transparent portion 20 coupled to one side of the illumination portion 10 and including at least one protrusion 25 to transmit light emitted from the illumination portion 10 through the protrusion 25;
An opaque portion 30 coupled to the space portion 35 formed by the protrusion 25 to block a part of the light transmitted through the transparent portion 20;
A plating unit 40 formed on the surface of the non-transparent portion 30; And
A stepped portion 31 located between the transparent portion 20 and the opaque portion 30;
And a light source.
The method according to claim 1,
Wherein the transparent portion (20) comprises at least one component selected from the group consisting of a polycarbonate resin, a polymethyl methacrylate resin, an acrylic resin, an ester resin and a styrenic resin.
The method according to claim 1,
Wherein the transparent portion (20) has a transmittance of 95% or more.
The method according to claim 1,
Characterized in that said opacity (30) comprises at least one component selected from the group consisting of acrylonitrile-butadiene-styrene resin, polycarbonate / acrylonitrile-butadiene-styrene resin, polypropylene and polyamide Device.
5. The method of claim 4,
If the opaque portion 30 comprises a polyamide component,
Characterized in that the opacity (30) comprises 25 to 35% by weight of filler based on the weight of the total opacity (30).
The method according to claim 1,
Wherein the opaque portion (30) comprises an acrylonitrile-butadiene-styrene resin, and the transparent portion (20) comprises a polycarbonate resin or a polymethylmethacrylate resin.
delete The method according to claim 1,
Characterized in that the step (31) has a width (w) of 0.5 to 1.5 mm and a height (h) of 0.3 to 1.3 mm.
The method according to claim 1,
Wherein the plating section (40) comprises a chromium plating layer and a nickel plating layer positioned between the chromium plating layer and the opaque section (30).
10. The method of claim 9,
Wherein the chromium plating layer comprises hexavalent chromium or trivalent chromium.
10. The method of claim 9,
Wherein the nickel plated layer comprises at least one layer selected from the group consisting of a glossy nickel plated layer, a semi-bright nickel plated layer, a matte nickel plated layer and an MP nickel plated layer.
The method according to claim 1,
The illumination unit 10 includes a light leakage prevention case 12; A reflective sheet 13 sequentially stacked on the light leakage prevention case 12 and the light source 11 provided inside the light leakage prevention case 12; A light guide plate 14; And a clear lens (15).
A transparent portion 20 including at least one protruding portion 25 is injection molded by using a metal mold and then a first portion 30 for injection molding the opaque portion 30 is formed in the space portion 35 formed by the protruding portion 25, step;
A second step of forming a plating part (40) on the surface of the opaque part (30) and including a chromium plating layer and a nickel plating layer positioned between the chromium plating layer and the opaque part (30);
A third step of mounting the illumination unit 10 on the opposite side to which the transparent part and the opaque part 30 are coupled;
Wherein the light emitting device comprises a light emitting diode.

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