KR20160112908A - Housing having multilayered sheet for lighting device and led lighting device using the same - Google Patents

Abstract

The present invention relates to a housing for an illuminator having a laminated sheet film so that glare is relieved and illuminance is enhanced, and an LED lighting apparatus using the same, the LED lighting apparatus comprising an LED light source, an upper housing on which the LED light source is mounted, A cover that covers the upper surface of the upper housing and refracts light generated from the LED light source when passing through the cover to eliminate shading and scatter light, And a lower housing for coupling the cover and the laminated sheet film to the upper housing, wherein the laminated sheet film comprises a film having a fine prism shape formed on its surface so as to be condensed while light from the light source is transmitted through the laminated sheet film, The prism sheet and the prism sheet of material are spread on both sides of the film so that the light passing through the prism sheet spreads evenly. And a diffusion sheet in which an acid pigment is mixed, wherein a combination of any one or more of the cover, the prism sheet and the diffusion sheet is overlapped or combined in any order is bonded to the lower housing. A housing for an illuminator and an LED lighting apparatus using the housing are provided.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a housing for an illuminator having a laminated sheet film, and an LED lighting apparatus using the housing.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a housing for a lighting apparatus, and more particularly, to a housing for an illuminator having a laminated sheet film capable of eliminating glare and providing improved illumination, and an LED lighting apparatus using the same .

2. Description of the Related Art Recently, light emitting diodes (hereinafter abbreviated as LEDs) have attracted attention as light sources for various lighting apparatuses. This is because the LED has advantages such as low power consumption compared to conventional incandescent lamps and fluorescent lamps, mass production with simple structure, high durability and long lifetime.

However, since it is difficult to replace the conventional illumination by only the amount of light generated from one LED element, dozens or hundreds of LED elements are used together. However, if dozens or hundreds of LED elements are used as a light source in this way, it is possible to provide a sufficient amount of light, but it is disadvantageous in that the price of the product is high. Therefore, in the lighting apparatus using the LED, various measures are required to increase the illuminance of the illuminated light by using a smaller number of LED elements.

In addition, since one LED element is a point light source that generates light at one point, the straightness of light is high, and when the light is directly irradiated to the eye, the eye fatigue is increased and glare occurs.

As a conventional method for raising the illuminance of the LED lighting apparatus and solving the glare, it is possible to attach a reflector used in a conventional lighting apparatus to a lighting apparatus for an LED, attach a light diffusion plate coated with a light diffusion agent, Or a separate light guide plate has been used to increase the illuminance of the LED lighting fixture.

In addition, a method of lowering the glare of the LED lighting apparatus by allowing the light to indirectly be illuminated by the reflector, the optical plate and the light guide plate has been used.

However, if a reflector used in a general lighting apparatus is used, or an optical plate on which a light diffusing agent is coated, or a light guide plate integrally formed with a lighting apparatus is used, the problem of glare can be solved, And scattering, there is a limitation in raising the illuminance of the LED illumination. In addition, the installation of the light guide plate not only complicates the LED lighting fixture, but also increases manufacturing cost and weight of the product.

As a related art related to a backlight device using an LED as a light source for improving illuminance and glare of an LED lighting apparatus using the light guide plate according to the related art, Korean Unexamined Patent Publication No. 10-0638874 (Registered on October 19, 2006) .

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art described above by providing a laminated sheet film in which a diffusion sheet and a prism sheet are arranged on a cover of an LED lighting apparatus for maximizing efficiency, And to provide a housing for an LED illuminator.

Further, the present invention is to provide an LED lighting fixture using the housing for an illuminator having the laminated sheet film as described above.

The technical objects to be achieved by the present invention are not limited to the above-mentioned technical problems.

According to an aspect of the present invention, there is provided an LED light source comprising: an LED light source; an upper housing on which the LED light source is mounted; A laminated sheet film which is bonded to an outer side of the cover and which allows light to be concentrated and diffused so that the light is irradiated to the outside, and a cover film and a laminated sheet film which are bonded to the upper housing Wherein the laminated sheet film includes a prism sheet of a film material having a fine prism shape formed on its surface so as to be condensed while transmitting light from the light source and a diffuser plate disposed on both sides of the film so that light passing through the prism sheet is uniformly diffused, And a diffusion sheet in which a pigment is mixed, wherein the lower housing includes the cover, the prism sheet, And a combination in which any one or more of them are stacked in an arbitrary order may be combined.

In detail, the cover, the prism sheet, and the diffusion sheet are sequentially stacked and coupled to the lower housing.

Specifically, the lower housing having the cover and the laminated sheet film may be used together with the upper housing mounted with the LED light source, or the upper housing and the lower housing may be used independently of each other. can do.

More specifically, the shape of the upper housing and the lower housing viewed from a plane may be various shapes such as a square, a circular shape, a narrow rectangular shape, or the like.

More specifically, the prism sheet may have various shapes of prisms depending on the application. If a plurality of strips having a prism shape with a prism shape are formed on the surface of the prism sheet, It can be seen that the light distribution curve is formed along the longitudinal direction of the housing or along the direction of the width of the upper housing so that the light distribution curve is formed in the form of direct light or spectroscopy. In a housing with a narrow cross- A plurality of prism sheets may be laminated in order to realize high illuminance without losing glare by stacking them in order of sheet, and to realize only high illuminance.

As described above, according to the present invention, a laminated structure of a cover, a prism sheet, and a diffusion sheet of a lighting device is efficiently arranged so that light generated from an LED light source is effectively diffused and scattered. Such composite laminated sheet films are housed in a housing for an LED illuminator Thereby providing an effect of eliminating the glare and improving the illuminance.

Further, the laminated sheet film of the cover, the prism sheet and the diffusion sheet can be easily installed by implementing the laminated sheets according to the use of the existing lighting apparatus, without changing the external shape of the existing lighting apparatus. In addition, since the present invention can be implemented with less power than the conventional lighting apparatus, the manufacturing cost can be reduced.

In addition, since the existing installation space can be recycled at a place where a high illuminance is required by utilizing the space where the existing lighting apparatus is installed without being deformed, the installation cost of the lighting apparatus is reduced.

1 is a diagram showing the overall configuration of an LED lighting apparatus according to an embodiment of the present invention.
Fig. 2 is a view showing a path when the light shown in Fig. 1 passes through the cover and the laminated sheet film.
3 is a view showing various shapes of a housing for an LED illuminator according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference symbols whenever possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

The LED lighting apparatus 100 includes an upper housing 110, an LED light source 120, and a light source 120. The LED lighting apparatus 100 includes an upper housing 110, an LED light source 120, A cover 130, a laminated sheet film 140 for allowing light to be concentrated and diffused, and a lower housing 150.

First, the upper housing 110 may be a thin plate member having a box-like shape with an opened top surface. As the material, various materials such as plastics such as acrylic resin, wood, metal or glass can be used.

The LED light source 120 corresponds to a light source of general LED lighting using an LED element.

Generally, when an LED device is used in a lighting device, a plurality of LED devices are arranged in a specific position or shape to increase the overall light quantity of the lighting device. In the present invention, various types of LED light sources can be applied.

That is, in the arrangement of the LED elements, a plurality of LED elements may be arranged in a row, a circle, or a quadrangle shape, and at the position where the LED elements are arranged, the side surface, the bottom or the slope of the housing of the lighting apparatus, As shown in FIG. It can be said that the present invention can be applied to all types of LED lights which are generally used at present.

The cover 130 covers various portions of the upper surface of the upper housing 150, and may be made of a transparent resin, for example. The cover 150 protects the interior of the LED lighting fixture 100 together with the laminated sheet film 140, prevents warping in a wide cross-sectional area, refracts the light passing therethrough, Eliminate the shade and let the light scatter.

As the resin used for the cover 130, a transparent resin may be used. Typically, a polycarbonate (PC) resin may be used. In addition, a polymethyl methacrylate (PMMA) resin, a methyl methacrylate-styrene (MS) resin, a polystyrene (PS) resin, a cyclic olefin polymer (COP) resin, polyethersulfone, or a modified product thereof.

The laminated sheet film 140 includes a prism sheet 141 and a diffusion sheet 142 and a diffusion sheet 142 is formed on the outer side of the LED lighting apparatus housing and a prism sheet 141 is laminated on the inner side of the housing sequentially And is attached to the outside of the cover 130. When the light irradiated from the LED light source passes through the laminated sheet film 140, the light is condensed first by the prism sheet 141 and then diffused evenly by the diffusion sheet 142.

The prism sheet 141 is formed of a film or the like as a base material and has a plurality of strips having a prismatic shape in cross section protruding from the upper surface of the film. Such a film or the like may be a transparent material. The light from the LED light source, which is refracted while passing through the cover 130 and scattered in various directions, is focused by the prism sheet 141 in the direction of the diffusion sheet 142 located on the front side.

The prism sheet 141 may have a thickness of 0.12 mm to 0.32 mm or the like. When considering the lamination structure with the diffusion sheet 142, it is preferable to use a prism sheet 141 having a thickness of 0.28 mm Do.

In addition, the prism sheet 141 is formed so that a plurality of bands having a prismatic shape in cross section are formed along the longitudinal direction of the housing of the LED lighting apparatus (Hereinafter referred to as "longitudinal binding arrangement"). At this time, since the light distribution curve of the transmitted light differs according to each arrangement, one prism sheet 141 may be selected by selecting one of the meridional arrangement and the longitudinal arrangement, or a combination of two sheets may be used, .

That is, in the case where the light is irradiated, the prism sheet 141 of the prism sheet 141 having the prism sheet 141 has the roughness of the central region relatively higher than that of the peripheral region, Compared with the illuminance, it is low, but the average illuminance of the whole area is higher than that of the strike arrangement. However, the concave-convex prism sheet 141 has a uniform light distribution curve.

The diffusion sheet 142 has a structure in which a diffusion agent is mixed using a film or the like as a base material. Such a film may be a transparent material. When the light emitted from the LED light source passes through the prism sheet 141, the diffusion sheet 142 is converged so as to have a straightness, so that the light spreads evenly around the diffusion sheet 142.

The diffusion sheet 142 may have a thickness of 0.05 mm to 0.42 mm and a transmittance of 35% to 90%. When considering the lamination structure with the prism sheet 141, the thickness is 0.28 mm and the transmittance It is preferable to use the diffusion sheet 142 of 70%.

The prism sheet 141 and the diffusion sheet 142 may be made of any one of resin materials used in the cover 130 and the prism sheet 141 and the diffusion sheet 142 may be made of resin, Or a double-sided tape having a high transmittance may be used to manufacture an integral sheet.

The diffusing material applied to the diffusion pigment of the diffusion sheet 142 preferably has a refractive index difference of 0.02 or more from the refractive index of the transparent resin used for the base material. For example, polystyrene resin, , A silicone resin, a fluorine resin, silica, quartz, titanium oxide, and zinc oxide.

The lower housing 150 is a thin-walled member formed along the rim of the opened upper surface of the upper housing 110, and is made of various materials such as plastics such as acrylic resin, wood, metal, Can be used. The lower housing 150 serves to fix the cover 130 and the laminated sheet film 140 on the upper surface of the LED lighting fixture 100.

The lower housing 150 may be mounted using one or more of the cover 130, the prism sheet 141, and the diffusion sheet 142, but may be overlapped or stacked in any order so that the combination is combined have.

That is, the cover 130, the prism sheet 141, and the diffusion sheet 142 can be mounted in various combinations according to the size of the cross-sectional area of the housing and the use of the LED lighting apparatus 100. For example, in an LED lighting apparatus 100 having a housing with a relatively narrow cross-sectional area in the longitudinal direction, a combination such as a diffusion sheet 142, a prism sheet 141, and a diffusion sheet 142 are stacked in this order, 150, or a plurality of one or more prism sheets 141 may be stacked and coupled to the lower housing 150 in order to realize only high illuminance.

Preferably, the cover 130, the prism sheet 141, and the diffusion sheet 142 may be sequentially stacked and coupled to the lower housing 150.

The LED lighting apparatus 100 is divided into two parts by an upper housing 110 to which the LED light source 120 is mounted, a lower housing 150 to which the cover 130 and the laminated sheet film 140 are coupled, It can be used independently for each conventional LED lighting fixture.

That is, only the portion corresponding to the lower housing can be replaced with the lower housing 150 to which the laminated sheet of the present invention is coupled, while maintaining the portion corresponding to the upper housing in the conventional general LED lighting apparatus.

Hereinafter, with reference to FIG. 2, a housing for an illuminator having a laminated sheet film and an operation state of an LED lighting apparatus using the housing will be described in detail.

2 is a view showing a path when light emitted from the LED light source 120 passes through the cover 130 and the laminated sheet film 140. FIG.

The light emitted from the LED light source 120 mounted in the upper housing 110 is emitted to the front and sequentially passed through the layer formed of the cover 130 and the laminated sheet film 140 and is externally irradiated.

The light emitted from the LED light source 120 incident on the cover 130 has various directions of travel when it is emitted. When the LED 130 passes through the cover 130, the light is refracted in a predetermined direction,

Here, in order to increase the light amount of the limited number of LED elements, light must be scattered and diffused. Since the light passing through the cover 130 is scattered and diffused when being emitted toward the front, It is possible to disperse the light amount of the LED light source 120 constituted by the elements. Also, the shadows generated due to the point light source of the LED element are lost through this process.

However, when the light passes through the cover 130, the light amount is dispersed due to diffusion and scattering, and diffusion phenomenon occurs around the scattering phenomenon, resulting in a decrease in light luminance. Therefore, the prism sheet 141 is used to concentrate the diffused light again to increase the light luminance.

A plurality of bands having a prismatic shape in cross section are formed on the surface of the prism sheet 141. When the incident light having various angles passes through the inside of the prism shape, the light is refracted, , With the viewing angle of about 70 ㅀ to 90 면서 facing the front. At the same time, light scattered and diffused when passing through the cover 130 is concentrated and amplified by the prism sheet 141, so that the brightness is also improved.

When a prism sheet 141 having various shapes is formed on the surface of the sheet to form a prism sheet 141 and a plurality of prism sheets 141 having an irregular shape are formed along the longitudinal direction of the upper housing 110 Light passing through the prism sheet 141 is concentrated at the central portion of the entire irradiation region and is formed along the direction of the width of the upper housing 110 . However, the concave-convex prism sheet 141 has a uniform light distribution curve.

That is, depending on the type of the prism sheet 141, the light distribution curve is formed in the form of an intense light or a spectroscopic light according to the arrangement of the trailing edge or the longitudinal arrangement.

However, when the light passes through the prism shape of the prism sheet 141, the light is refracted in the prism shape and then totally reflected. Then, the light is scattered into various colors and an iridescent light appears. Also, the surface of the prism sheet 141 itself is shrunken depending on the viewing angle.

Further, the light passing through the prism sheet 141 still has an irregular traveling angle at a large portion.

The diffusing sheet 142 is used over the entire surface of the prism sheet 142 in order to even out the remaining irregular propagation angle of the light.

That is, when the light passes through the diffusion sheet 142, the irregularly traveling light is diffused evenly in the front direction, and the iridescence phenomenon and the moire phenomenon appearing on the surface of the prism sheet 141 are eliminated.

As described above, the LED lighting apparatus 100 of the present invention includes the cover 130 and the prism sheet 141 and the diffusion sheet 142 stacked on the upper housing 110 using the LED element as the direct light source 120 The lower housing 150 on which the laminated sheet film 140 is mounted.

When the light passes through the LED lighting apparatus 100 according to the present invention, the light emitted from the point light source of the LED element is scattered and diffused while passing primarily through the cover 130, Concentration occurs while passing through the prism sheet 141 of the film 140 and is diffused again while passing through the diffusion sheet 142 of the laminated sheet film 140 in the third order and then irradiated to the outside. In this way, when the LED light source of the same size is used, the glare can be solved and the illuminance can be improved as compared with the existing direct type illumination. However, the diffusion sheet 142, the prism sheet 141, and the diffusion sheet 142 are stacked in this order in a housing having a narrow cross-sectional area, a down light, a desk illumination, and the like. In addition, depending on the purpose of use, for plant cultivation, blackboard lighting, etc., if only low power and high illuminance are to be achieved, more than one prism sheet can be used.

Table 1 below shows the performance of the LED lighting apparatus 100 according to the present invention by comparing the conventional LED direct lighting apparatus and the LED lighting apparatus 100 according to the present invention.

Specifically, the present invention, in which the power consumption is 50W and the power consumption is 45W and 50W, respectively, are measured under the same condition of the measurement height 2M, and the results are shown in Table 1 below.

That is, referring to Table 1, when the LED light source of the same size is used, the illuminance of the LED lighting apparatus according to the present invention is 400 (LUX), which is 25% to 27% higher than that of the conventional LED surface illumination 314 . In contrast to the conventional 50W LED surface lighting device and the 45W LED lighting device of the present invention, the lighting device of the present invention has 5% less power consumption and 5W less power consumption, and the number of LED chips It was rather reduced and at the same time the glare was relieved. Also, when the DOWN LIGHT LED light source of the same standard is used, it can be seen that the illuminance of the DOWN LIGHT LED lighting apparatus of the present invention is 141 (LUX), which is 35% higher than 104 (LUX) of the existing DOWN LIGHT LED surface illumination have.

Measurement products standard Illumination (LUX) Glare Number of chips Remarks Conventional LED surface lighting 50W, direct lighting About 314 has exist About 240 The LED lighting fixture of the present invention 50W, direct lighting About 400 none About 240 Illumination is improved by 25% ~ 27%. The LED lighting fixture of the present invention 45W, direct lighting Approximately 330 none About 209 Roughness of existing power 50w is improved by about 5% and the number of chips is decreased Commercial LED DOWN LIGHT Light 15W
Direct lighting 104 has exist 48 LED DOWN LIGHT APPLICATION OF THE INVENTION 15W
Direct lighting 141 none 48 35% better illumination

In addition, in the case of conventional LED surface lighting which is commercially available, the LED light source is disposed on the side surface and the light guide plate is mounted as a method for solving the glare. Thus, the LED light source equipped with the light guide plate becomes heavy, There is a problem that the manufacturing cost is increased.

Table 2 below shows the results of measuring the weight of the LED surface lighting product and the weight of the light guide panel only, which are provided with the LED light source on the side and the light guide plate. That is, the weight of the light guide plate used for eliminating the glare of the LED light source is 1058 g, which accounts for about 30% of the total weight of the lighting apparatus.

Measurement products standard Product Size (mm) Total weight (g) Light guide plate weight (g) Commercial LED surface lighting with light guide plate 50W, side lighting 1200 * 300 3676 1058

As can be seen from the above measurement results, the LED lighting apparatus 100 according to the present invention has an illuminance of 25% or more higher than that of the existing commercially available LED lighting apparatus of the same standard, and the glare can be solved to emit soft light, Since it is not used, the cost can be reduced, and the lightness of the product can maximize the convenience in installation and manufacturing process of the product.

3 is a view showing various shapes of a housing for an LED illuminator according to another embodiment of the present invention. 3A is an embodiment of the LED lighting apparatus 100 'in which the housing is formed in a square, and FIG. 3B is an example of the LED lighting apparatus 100' FIG. 3C is another embodiment of an LED lighting apparatus 100 '' 'formed into a narrow rectangular long rectangular shape capable of replacing the housing of a conventional flat fluorescent lamp.

In addition, the shape of the housing for the LED illuminator of the present invention can be modified to any other shape and used. In other words, it is possible to replace the LED lighting apparatus of the present invention with the LED lighting apparatus of the present invention, such as LED street light, LED security light for the street, factory LED lighting, plant cultivation, etc., It is possible.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, a housing equipped with a cover, a prism sheet, and a diffusion sheet capable of improving illuminance and relieving glare can be easily coupled to a conventional lighting apparatus. The diffusion sheet 142, the prism sheet 141, and the diffusion sheet 142 are laminated in this order in a housing having a narrow cross-sectional area, a down light, a desk light, and the like. In addition, depending on the purpose of use, for plant cultivation, blackboard lighting, etc., if only low power and high illuminance are to be achieved, more than one prism sheet can be used. Therefore, it is possible to utilize the housing of the existing lighting apparatus as it is, so there is no need to separately modify the entire housing for the lamp housing to use the LED lighting apparatus. As a result, the manufacturing cost is reduced. Also, since the space where the existing lighting apparatus is installed can be utilized as it is, the installation cost can be reduced.

In addition, it is possible to fabricate a highly efficient lighting device that improves illumination and reduces glare with only a small number of LED elements, thereby lowering the power consumption, thereby making it possible to manufacture an energy saving LED lighting fixture. In addition, since the expensive light guide plate used in the conventional LED lighting fixture is not needed, the manufacturing cost of the LED lighting fixture product is reduced.

The housing for an illuminator having the laminated sheet film as described above and the LED lighting apparatus using the same are not limited to the configuration and the operation method of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

100, 100 ', 100 ", 100''': LED lighting fixture
110: upper housing 120: LED light source
130: cover 140: laminated sheet film
141: prism sheet 142: diffusion sheet
150: Lower housing

Claims (1)

An upper housing in which an LED light source is mounted;
A cover made of a transparent resin material and arranged to cover an upper edge of the upper housing;
A prism sheet of film material having a plurality of strips of prism or concavo-convex shape protruding from the surface, the strip having a longitudinal direction or a width direction of the upper housing;
A diffusion sheet having a diffusion pigment; And
The prism sheet, and the diffusion sheet are coupled to the upper surface of the upper housing, the lower housing coupled to the upper housing,
And LED lighting apparatus using the housing.

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