KR20080049975A - Light source apparatus using a metal light guide - Google Patents

Abstract

A light source apparatus using a metal light guide is provided to obtain a semipermanent lifespan by replacing a light source through using the metal light guide. A light source apparatus(100) using a metal light guide(110) includes a light source unit(120) and the metal light guide. The light source unit is coupled to at least one surface of the metal light guide. The light source unit includes a light source(122) and a light source reflecting plate(124). The light source reflecting plate is installed on an outer peripheral surface of the light source. The light source reflecting plate reflects light generated from the light source and inputs the light into the metal light guide to improve use efficiency of the light.

Description

Light source device using metal light conduit {LIGHT SOURCE APPARATUS USING A METAL LIGHT GUIDE}

1 is an exploded perspective view showing a light source device according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of the light source device shown in FIG. 1.

3A to 3C are exploded perspective views illustrating a light source device according to other embodiments of the present invention.

4 is an exploded perspective view showing a light source device according to another embodiment of the present invention.

5A and 5B are enlarged views of portion A of FIG. 4.

6 is an exploded perspective view showing a light source device according to another embodiment of the present invention.

The present invention relates to a light source device.

The light source device is a device for irradiating light over a large area, and devices such as fluorescent lamps are commercially available.

In general, a fluorescent lamp refers to a hot cathode low-pressure mercury arc discharge lamp in which a small amount of mercury and 5 to 6 mmHg of argon gas are enclosed in a tube. Electrodes are sealed at both ends.

Fluorescent lamps illuminate by converting the ultraviolet rays generated by the discharge of mercury vapor into visible light by the phosphor coated on the inner wall of the tube.

Fluorescent lamps have a disadvantage in that the illuminance of the emitted light is lowered due to flickering or the like, and there is a problem of polluting the environment due to mercury, argon, and the like when disposed.

It is an object of the present invention to provide a light source device which can be semi-permanently used using a metal light conduit.

Another object of the present invention is to provide a light source device that can be used as a special lighting by reflecting the color of the metal.

In order to achieve the above object, a light source device according to an embodiment of the present invention includes a metal light conduit having light distribution holes formed in at least a portion of a cylindrical shape; And a light source disposed on at least one side of the metal light conduit to provide light.

 In another embodiment of the present invention, the light source device further includes a diffuser disposed outside the metal light conduit to scatter light.

In another embodiment of the present invention, the light source device further comprises a light pipe housed inside the metal light conduit, wherein the light pipes extend in the same direction as the longitudinal direction of the light pipe and are parallel to each other. An inner surface structured into a plurality of linear shapes arranged; And an outer surface which is generally opposite to the inner surface, and which is generally flat.

The light source device according to the present invention has the advantage that it can be used semi-permanently by replacing the light source using a metal light conduit.

In addition, the light source device according to the present invention has the advantage that can be used as a special lighting by reflecting the color of the metal when lighting.

Hereinafter, with reference to the accompanying drawings will be described in detail preferred embodiments of the light source device according to the present invention.

1 is an exploded perspective view showing a light source device according to an embodiment of the present invention, Figure 2 is a partial cross-sectional view of the light source device shown in FIG.

1 and 2, the light source device 100 of the present invention includes a light source unit 120 and a metal light conduit 110.

The light source unit 120 is coupled to at least one side of the metal light conduit 110 and includes a light source 122 and a light source reflector 124.

In the present invention, the light source 122 is composed of one or more, without limitation, a point light source such as a light emitting diode, a linear light source such as a cold cathode fluorescent lamp (CCFL) and an external electrode fluorescent lamp (EEFL), or a surface light source This can be used.

The light source reflector 124 is disposed along the outer circumferential surface of the light source 122, and reflects the light generated from the light source 122 and enters the metal light conduit 110, thereby improving light utilization efficiency.

The metal light conduit 110 has a cylindrical shape, and light distribution holes 112 are formed in at least some regions. The light distribution holes 112 may be formed in a direction to emit light, and may be formed in the entire area along the outer circumferential surface of the metal light conduit 110.

In addition, according to the purpose of emitting light to the bottom surface, the light distribution holes 112 may be formed only in the lower region of the metal light conduit 110 as shown in FIG. 1.

Since metal is generally excellent in reflectivity, light provided from the light source 122 is emitted through the light distribution holes 112 while being transmitted along the length direction in the metal light conduit 110.

Since the light is emitted from the light distribution holes 112 and reflects the color of the metal due to optical characteristics such as refraction, scattering, and diffraction of the light, the light source device 100 of the present invention can be used for special lighting purposes. .

The material of the metal light conduit 110 is not particularly limited, but may be composed of copper, aluminum, nickel, or an alloy thereof. In order to improve reflectivity, the metal light conduit 110 may be coated with silver to form the metal light conduit 110. Can be.

In one embodiment of the present invention, a fluorescent material (not shown) is applied to at least a portion of the inner surface of the metal light conduit 110. In this case, the light source 122 is composed of a UV lamp, and the ultraviolet light provided by the UV lamp is converted into visible light by the fluorescent material and is emitted through the light distribution holes 112.

The formation of the metal light conduit 110 may be formed by extrusion or injection, which is a method well known in the art. In the case of extrusion molding, the metal light conduit 110 may be configured by extruding the metal to form a cylindrical shape and then drilling the surface. Further, after drilling the flat plate, the metal light conduit 110 of the present invention may be rolled into a cylindrical shape.

3A to 3C are exploded perspective views illustrating a light source device according to other embodiments of the present invention.

3A and 3B, the light source devices 300a and 300b include light source parts 320a, 320b and 320b ′ and metal light conduits 310a and 310b.

Light source portions 320a, 320b and 320b ′ include light sources 322a, 322b and 322b ′ and light source reflecting plates 324a, 324b and 324b ′ and are coupled to at least one side of metal light conduits 310a and 310b. The light source device 300a illustrated in FIG. 3A illustrates a case in which the light source unit 320a is coupled to only one side of the metal light conduit 310a, and the light source device 300b illustrated in FIG. 3B may have both side surfaces of the metal light conduit 310b. The case where the light source parts 320b and 320b 'are combined with each other is shown.

The size of the light distribution holes 312a and 312b formed in the metal light conduits 310a and 310b increases as the distance from the light sources 322a, 322b and 322b 'is increased. Since the area adjacent to the light sources 322a, 322b, and 322b 'is provided with a large amount of light, the size of the light distribution holes 312a and 312b is made small to increase the amount of reflected light, and the light distribution hole ( The sizes of 312a and 312b) are made large to increase the amount of light emitted. Accordingly, the luminance of light emitted through the light distribution holes 312a and 312b along the length direction of the light source devices 300a and 300b may be uniform.

As shown in FIG. 3A, when the light source unit 320a is coupled to only one side of the metal light conduit 310a, a reflector (not shown) may be coupled to the other side. The reflector reflects the light reaching the end of the metal light conduit 310a from the light source 322a into the metal light conduit 310a, thereby improving light utilization efficiency.

The reflector is made of a highly reflective material, for example, can be obtained by coating a metal material having excellent reflectivity such as aluminum or silver on the resin surface.

Referring to FIG. 3C, the light source device 300c includes a light source 320c and a metal light conduit 310c.

The light source unit 320c includes a light source 322c and a light source reflector 324c and couples to one side of the metal light conduit 310c. Here, the light source 320c may be coupled to both sides of the metal light conduit 310c.

Light distribution holes 312c formed in the metal light conduit 310c are formed denser as the light source 322c moves away from the light source 322c. Since a large amount of light is provided in the area adjacent to the light source 322c, the light distribution holes 312c are scattered to increase the amount of reflected light, and the light distribution holes 312c are concentrated as the light source 322c moves away from the light source 322c. Increase the amount of light being Accordingly, the luminance of light emitted through the light distribution holes 312c along the length direction of the light source device 300c may be uniform.

Further, in one embodiment of the present invention, the light distribution holes of the metal light conduit are densely formed away from the light source as shown in FIG. 3C, and at the same time, the size of the light distribution holes as shown in FIGS. 3A and 3B. Is configured to be large.

4 is an exploded perspective view illustrating a light source device according to still another embodiment of the present invention, and FIGS. 5A and 5B are enlarged views of portion A of FIG. 4.

Referring to FIG. 4, the light source device 400 of the present invention includes a light source unit 420, a metal light conduit 410, and a diffuser 430.

The light source unit 420 includes a light source 422 and a light source reflector 424, and the light provided from the light source 422 is transmitted in the longitudinal direction inside the metal light conduit 410, and on the other hand, through the light distribution holes 412. It is emitted. Light emitted through the light distribution holes 412 passes through the diffuser 430 and causes scattering. As a result, the light emitted from the light source device 400 is uniformized. The diffuser 430 may be disposed in the entire region of the outer surface of the metal light conduit 410 or partially disposed only in the region where the light distribution holes 412 are formed.

Referring to FIGS. 5A and 5B, the diffuser 430 may include resin materials 432a and 432b and a plurality of beads 434a and 434b distributed and disposed on the materials 432a and 432b.

As the base materials 432a and 432b, it is preferable to use an acrylic resin such as polyacrylate or polymethyl methacrylate (PMMA) that is transparent and has excellent heat resistance and mechanical properties.

The beads 434a and 434b may be made of the same or different types of resins as the base materials 432a and 432b.

In one embodiment of the invention, the size and distribution of the beads 434a is random as shown in FIG. 5A. If beads 434a of various sizes are irregularly distributed in the base material 432a, the haze effect increases.

In another embodiment of the present invention, the plurality of beads 434b have substantially the same size and are distributed substantially uniformly within the base material 432b as shown in FIG. 5B. As such, when the beads 434b having substantially the same size are uniformly distributed in the base material 432b, the haze effect is reduced, but the luminance is increased. That is, as the beads 434b are regularly distributed in the base material 432b, the haze effect decreases but the luminance increases.

The diffuser 430 having the above-described structure can be obtained through various methods known in the art.

For example, the diffuser 430 may be obtained by compressing the film formed by dispersing beads in a liquid resin and solidifying the film solidified on the outer surface of the metal light conduit 410 in a state where the film is heated to an appropriate temperature. In addition, the liquid resin in which the beads are dispersed may be obtained by coating the outer surface of the metal light conduit 410 to a predetermined thickness.

6 is an exploded perspective view showing a light source device according to another embodiment of the present invention.

Referring to FIG. 6, the light source device 600 of the present invention includes a light source unit 620, a metal light conduit 610, and a light pipe 640.

The light pipe 640 is received inside the metal light conduit 610. The light pipe 640 extends in the same direction as the longitudinal direction of the light pipe 640, and is a surface opposite to the inner surface 642 and the inner surface 642 structured in a plurality of linear shapes arranged side by side. A flat outer surface 644.

The plurality of linear shapes are for transmitting the light provided from the light source unit 620 through the total reflection to the end along the longitudinal direction of the metal light conduit 610 and the light pipe 640, the shape is not particularly limited, For example, it is comprised in a prism shape.

The prism shape may be in the shape of a triangle, an isosceles triangle, an equilateral triangle or an isosceles triangle, and preferably, may be in the shape of an isosceles triangle.

According to an embodiment of the present invention, the material of the light pipe 640 is a material excellent in light transmittance, mechanical and thermal stability, for example, polycarbonate (PC), polymethyl methacrylate (PMMA), acrylic, poly At least one polymeric material selected from the group consisting of propylene, polystyrene and polyvinyl chloride.

Light provided from the light source unit 620 including the light source 622 and the light source reflector 624 is incident therein through the side of the light pipe 640. The incident light is transmitted through the inner surface 642 structured into a plurality of linear shapes in the longitudinal direction of the light pipe 640 by total reflection or the like, while being emitted through the outer surface 644 of the light pipe 640. .

When the light emitted from the outer surface 644 is emitted to the area where the light distribution holes 612 of the metal light conduit 610 are formed, the light is emitted to the outside of the light source device 600. In addition, when the light emitted from the outer surface 644 is emitted to an area other than the area where the light distribution holes 612 of the metal light conduit 610 are formed, the light is reflected by the metal light conduit 610 to light the light pipe 640. Constrained to the inside, and the light pipe 640 proceeds again.

In one embodiment of the present invention, in the light source device 600 of the present invention, a diffuser 430 as shown in FIG. 4 is disposed outside the metal light conduit 610.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art having ordinary knowledge of the present invention will be able to make various modifications, changes, additions within the spirit and scope of the present invention, such modifications, changes and Additions should be considered to be within the scope of the following claims.

The light source device according to the present invention has the advantage that it can be used semi-permanently by replacing the light source using a metal light conduit.

In addition, the light source device according to the present invention has the advantage that can be used as a special lighting by reflecting the color of the metal when lighting.

Claims (10)

A metal light conduit having light distribution holes formed in at least a portion of the cylindrical shape; And And a light source disposed on at least one side of the metal light conduit to provide light. The light source device according to claim 1, wherein the light source is a plurality of point light sources, linear light sources or surface light sources. The light source device according to claim 1, wherein the size of the light distribution holes increases as the distance from the light source increases. The light source device of claim 1, wherein the light distribution holes are densely formed away from the light source. The method of claim 1, wherein the light source device, And a diffuser disposed outside the metal light conduit to scatter light. The method of claim 5, wherein the diffuser, A base material made of a resin through which light can pass; And The light source device is disposed on the base material and comprises a plurality of beads capable of scattering light input to the base material. According to claim 1 or 5, The light source device further comprises a light pipe housed inside the metal light conduit, wherein the light pipe, An inner surface extending in the same direction as the longitudinal direction of the light pipe and structured in a plurality of linear shapes arranged side by side; And a substantially flat outer surface as a surface opposite the inner surface. 8. An optical device according to claim 7, wherein the linear shape is a prism shape. 8. The light pipe of claim 7, wherein the light pipe is comprised of at least one polymeric material selected from the group consisting of polycarbonate (PC), polymethylmethacrylate (PMMA), acrylic, polypropylene, polystyrene and polyvinyl chloride. Light source device, characterized in that. The light source device of claim 1, wherein the light source is a UV lamp, and a fluorescent material is coated on at least a portion of an inner surface of the metal light conduit.

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