KR20090060490A - Lighting equipment which adopted light emitting diode - Google Patents

Abstract

The disclosed lighting fixture may include a plurality of light pipes connected to a plurality of long-life, energy-efficient LED packages, and guiding the light emitted from the LED package to the outside in a wide range. In the LED package, a plurality of LED chips emitting red, green, and blue lights may be mounted, and light of various colors may be emitted by a combination of lights from the plurality of LED chips. The light pipe may cover the LED package and emit light emitted at a predetermined angle from the LED package to the outside uniformly in the entire area of the light pipe through a diffuse reflection process. The light pipe can be emitted to the outside by converting the light of the LED package, which is a point light source, into a line light source or a surface light source.

Description

Lighting equipment employing light-emitting diodes {APPARATUS FOR LIGHTING HAVING LIGHT EMITTING DIODE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to lighting fixtures, and more particularly to lighting fixtures using light emitting diodes as light sources.

Lighting is a technology that uses light usefully in human life, and can be classified into daylight lighting using natural light and artificial light using artificial light sources such as electric light.

Incidentally, incandescent lamps and fluorescent lamps are used as the artificial light, and the invention of artificial light as described above has become a driving force for enriching human life.

The incandescent lamp emits light close to sunlight with a bulb made by tungsten filament in a glass sphere of vacuum.

The incandescent lamp has a structure in which electromagnetic waves are emitted when the temperature increases as the current flows through the filament. Most of the supplied electrical energy is emitted as thermal energy, and only about 5% is converted into visible light.

That is, there is a disadvantage that the energy efficiency is lower than the power consumption, and also because the filament is easily broken, there is a problem that the life is short and often need to be replaced.

The fluorescent lamp is a discharge lamp in which mercury and argon are put in a vacuum glass tube and fluorescent material is applied to the inner wall. The fluorescent lamp consumes less power and has better energy efficiency than incandescent lamps. There is this.

In addition, the incandescent lamps, fluorescent lamps, etc. have a disadvantage in that various production such as various color expression or light amount adjustment is impossible.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide an improved lighting device that is excellent in power consumption, has a long life, and is capable of environmental protection and various productions.

The luminaire of the present invention for achieving the above object is a plurality of LED packages having a long life, energy-efficient connection to the power socket, and guides the light emitted from the LED package to be emitted to the outside in a wide range It may include a light pipe of.

A plurality of LED chips emitting red, green, and blue light may be mounted on the LED package, and light of various colors may be emitted by a combination of lights from the plurality of LED chips.

The light pipe may cover the LED package and emit light emitted at a predetermined angle from the LED package to the outside uniformly in the entire area of the light pipe through a diffuse reflection process.

The light pipe may convert the light of the LED package, which is a point light source, into a line light source or a surface light source to be emitted to the outside.

As described above, according to the lighting fixture of the present invention, by using the LED package as a light source, it is possible to extend the life of the lighting fixture and to improve energy efficiency due to low power consumption, and to prevent mercury contamination such as fluorescent lamps at the time of disposal. It can reduce environmental pollution and produce various colors.

In addition, the point light source, which is not suitable for use as a living light, can be converted into a line light source or a surface light source by a life pipe, and thus the LED package can be used as a living light.

1 is a view showing a lighting fixture according to an embodiment of the present invention, Figure 2 is a view showing the patterns formed in the light pipe of the lighting fixture of FIG.

1 and 2, the lighting device 100 may include a power socket 110, an LED package 130, and a light pipe 140.

The power socket 110 may have a circular or polygonal shape and a plurality of power may be drawn out.

The LED package 130 may be mounted on a printed circuit board 120 detachably coupled to the power socket 110 as a light source, in particular, a point light source of the lighting apparatus 100.

The LED package 130 may have a structure in which a plurality of LED chips (not shown) are mounted on a base substrate (not shown) on which an electrode (not shown) is formed. The base substrate may include a ceramic having good heat dissipation efficiency and heat resistance. ceramic) substrate.

The plurality of LED chips may be combined into LED chips capable of emitting three types of red, green, and blue lights, and the color of light emitted according to the voltage applied to each of the LED chips. Mixing can produce various colors of light.

Each of the LED packages 130 having the above structure is connected to the power socket 110 to receive a voltage required for light emission from the power socket 110.

The light pipe 140 may be a guide having a good light transmittance capable of converting light emitted from the LED package 130, which is a point light source, into a line light source or a surface light source to be emitted to the outside.

One side of the light pipe 140 may be opened, and an opening portion of the light pipe 140 may be coupled to the area of the opened portion so that the LED packages 130 are positioned.

That is, the LED package 130 is located at one open end of the light pipe 140, and light may be emitted from one end of the light pipe 140 toward the other end.

When light is emitted from the LED packages 130 into the light pipe 140, light is concentrated at both edges of the light pipe 140 so that the center of the light pipe 140 is dark and the edge is brightly expressed. Can be.

In order to prevent this, the inner surface of the light pipe 140 has a pattern such as a matrix form by a printing method or a laser scanning method in order to diffusely reflect the light emitted from the LED packages 130 ( A plurality of patterns; 141 may be formed.

Light diffused by the patterns 141 may be uniformly expressed in the entire area of the light pipe 140 and may be emitted to the outside at a constant brightness.

According to the lighting apparatus 100 having the above structure, since the LED package 130 is used as a light source, it has a longer life and lower power consumption than the conventional fluorescent lamps or incandescent lamps.

In addition, the light emitted to the outside by the light pipe 140 that can convert the light emitted from the LED package 130 as a point light source into a line light source or a surface light source can be guided to the outside, it is easy to the living lighting such as indoor lighting Available.

In addition, it is possible to express various colors by the combination of LED chips that can emit three colors of red, green, and blue, and it is effective in protecting the environment by preventing environmental pollution such as mercury pollution from fluorescent lamps when discarding. Can be.

3 is a view showing a lighting fixture according to another embodiment of the present invention, Figure 4 is a view showing the appearance of light diffusion by the diffusion sheet of FIG.

3 and 4, the lighting fixture 200 may include a power socket 210, an LED package 230, and a light pipe 240.

The power socket 210 may have a circular or polygonal shape and a plurality of power may be drawn out.

The LED package 230 is a light source, in particular a point light source of the lighting fixture 200, is arranged in a plurality of columns and rows on a printed circuit board 220 detachably coupled to the power socket 210 Can be mounted.

The LED package 230 may be a structure in which a plurality of LED chips (not shown) are mounted on a base substrate (not shown) on which an electrode (not shown) is formed, and the base substrate is a ceramic substrate having good heat dissipation efficiency and heat resistance. Can be.

The plurality of LED chips may be combined into LED chips capable of emitting three types of red, green, and blue lights, and may produce light of various colors by color mixing of light emitted according to the voltage applied to each of the LED chips. Can be.

Each of the LED packages 230 having the above structure is connected to the power socket 210 to receive a voltage required to emit light from the power socket 210.

The light pipe 240 may be a guide having a good light transmittance capable of converting light emitted from the LED package 230, which is a point light source, into a line light source or a surface light source to be emitted to the outside.

The light pipe 240 may have an open side, and the open portion may be coupled to the power socket 210.

In the coupling, the LED package 230 mounted on the printed circuit board 220 is inserted into the opened portion, so that the printed circuit board 220 and the LED package 230 are connected to the light pipe 240. It may be arranged in the length (long axis) direction of.

That is, the LED packages 230 are disposed inside the light pipe 240 in a plurality of columns and rows along the long axis of the light pipe 240 to be parallel to the light pipe 240 to emit light upward. have.

In the lighting device 100 of FIG. 1, if the LED packages 130 emit light from the side with respect to the light pipe 140, in the lighting device 200 of FIG. 3, the LED packages 230 are light pipes 240. It may be a method of emitting light upward with respect to.

When the LED packages 230 are arranged in the length (long axis) direction inside the light pipe 240 as described above, one side of the light pipe 240 by the printed circuit board 220 under the LED packages 230. Only light can be emitted.

A diffusion sheet 241 may be further attached to an inner surface of the light pipe 240. The diffusion sheet 241 uniformly diffuses the light emitted from the LED package 230 to the outside of the light pipe 240 and emits the light. can do.

According to the lighting apparatus 200 having the above structure, it is useful when irradiating light in one direction, and since the LED package 230 is used as a light source, the lifespan is longer than that of a conventional fluorescent lamp or an incandescent lamp, and power consumption is increased. This low can have an economic effect.

In addition, since light emitted from the LED package 230 as a point light source 230 can be converted into a line light source or a surface light source, light emission to the outside can be guided, so it is easy to use as a living light such as indoor lighting. Available.

In addition, it is possible to express various colors by the combination of LED chips that can emit three colors of red, green, and blue, and it is effective in protecting the environment by preventing environmental pollution such as mercury pollution from fluorescent lamps when discarding. Can be.

1 is a view showing a light fixture according to an embodiment of the present invention.

FIG. 2 is a view showing a light pipe of the luminaire of FIG. 1 according to II ′. FIG.

3 is a view showing a lighting device according to another embodiment of the present invention.

4 is a view showing a state of diffusion of light by the diffusion sheet of the lighting fixture of FIG.

<Description of the symbols for the main parts of the drawings>

100,200 ... lighting fixture 110,210 ... power socket

120,220 ... Printed Circuit Board 130,230 ... LED Package

140,240 ... Light Pipe 141 ... Pattern

241 ... Diffusion Sheet

Claims (7)

Power socket; A plurality of LED packages connected to the power sockets, the plurality of LED packages each having a plurality of LED chips; And Light fixture comprising a plurality of light pipes for converting the light emitted from the LED package as a point light source to any one of a line light source or a surface light source to emit to the outside. The method of claim 1, And a printed circuit board interposed between the power socket and the plurality of LED packages respectively connected to the power socket and the plurality of LED packages. The method of claim 2, Each of the plurality of LED package is located at one end of each of the plurality of light pipes, characterized in that the light emitting from the side with respect to the light pipe. The method of claim 3, And a plurality of patterns formed on the inner surfaces of the plurality of light pipes to diffusely reflect the light emitted from the LED package so as to uniformly emit light in the entire area of the light pipe. The method of claim 4, wherein The plurality of patterns is a luminaire, characterized in that the matrix form. The method of claim 2, And each of the plurality of LED packages is inserted in a long axis direction in the plurality of light pipes so as to be parallel to the plurality of light pipes. The method of claim 6, And a diffusion sheet is attached to the inner surfaces of the plurality of light pipes.

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