KR101892996B1 - Visible Lighting Lamp with a Built In LED Package Light - Google Patents

Abstract

The present invention relates to an illumination lamp which has multiple LED light source chips having a solar spectrum in the form of a package and executes a phosphor blending treatment operation to emit white light for efficiently realizing the visual and color properties of the white light while adding the inherent solar light function thereto. A visible white light illumination lamp having a built-in LED package light source having a spectrum close to the solar spectrum includes: a substrate having one or more mount spaces; an LED package including a first optical element chip which is mounted in each mount space of the substrate while emitting light with wavelengths of 400-420 nm and a second optical element chip which is mounted in each mount space of the substrate with the first optical element chip while emitting light with wavelengths of 460-470 nm; high-brightness phosphors which fill the mount spaces of the substrate having the LED package mounted therein while forming a single optical focus for the light of the LED package; and a driving controller which applies driving signals to the LED package while being connected to the substrate through lines.

Description

[0001] The present invention relates to a white light emitting diode (LED) package,

The present invention relates to a white visible light illumination lamp having an LED package light source close to the solar spectrum, and more particularly, to a method of arranging a plurality of LED light source chips having a solar spectrum in a package form, To a white visible light lamp having a built-in LED package light source close to a solar spectrum capable of effectively realizing the feel and color of white light.

Generally, various types of lighting lamps are installed in a confined space such as a home, an office, and a public facility to illuminate the dark surroundings on the ceiling.

These lamps include incandescent lamps that emit light by putting a metal coil or tungsten wire with a high melting point in a glass sphere filled with vacuum or gas. In addition, mercury and argon were injected into a vacuum glass tube and a fluorescent material was applied to the inside of the vacuum glass tube. Ultraviolet rays generated by the discharge of mercury were converted into visible rays, Fluorescent lamps are commonly used.

In recent years, it has been applied in a wide range of fields such as landscape lighting, advertisement lighting, and other general lighting devices because it has high luminance with low power consumption which is only about 1/2 level of power consumption compared to conventional lighting, and is environment friendly, long life and durability LED lighting has been proposed as an illumination facility using an LED (light emitting diode), which is a light emitting diode device having a light emitting diode.

The LED module is constituted by mounting a plurality of LED elements on a printed circuit board in a predetermined arrangement, and the LED element emits light of a single color, It is applied to selectively emit various colors according to electric / electronic signals.

In order to control the color temperature of the LED lamp, the average color temperature and the luminance can be controlled according to the time of day, or the output to the red, blue, and green light sources is controlled through a separate circuit corresponding to the ambient temperature, .

However, in the case of the illumination by the conventional LED illumination lamp, there is a problem that it is not suitable for use as a white illumination because it does not stimulate human sensibility and is suitable only as a function as an auxiliary illumination.

As a conventional technique disclosed to solve the above problems, Korean Patent Registration No. 941765 (Mar. 23, 2010) discloses a light emitting device including a sensing unit for sensing the ambient temperature and humidity of a light emitting diode (LED) A control unit for determining a color temperature using predetermined time and season data, and setting and generating a duty ratio according to the color temperature, and controlling the absolute color temperature of the light emitting diode according to a duty ratio signal generated by the control unit, There is known a LED lighting device for controlling a color temperature in which a color temperature of a light emitting diode is changed by temperature, humidity, time, and season according to the structure including a driver for driving a diode in a white region.

However, since the conventional LED illumination is continuously illuminated by the determined color temperature, it can not be used in a place where a constant visual feeling and color feeling should be maintained, such as an office or a workplace, and the efficiency is extremely low.

Also, in the case of illumination according to the conventional LED package, the wavelength present as natural light is not emitted from the white LED light source, and thus the color rendering index is only 65 to 75%, and the color rendering property and sharpness are remarkably deteriorated.

KR Patent Registration No. 10-0941765 (Feb.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a high-efficiency light source chip having a band of 460 to 470 nm arranged along with a light source chip having a band of 400 to 420 nm in one LED package, In addition to realizing the sense of unity of the existing white light illumination and the geometrical optical color in various types of luminaires at the level of the sunlight, the white visible light with the LED package light source close to the solar spectrum capable of realizing the high efficiency white light It provides lighting, and has its purpose.

A white visible light illumination lamp having a built-in LED package light source close to the solar spectrum provided by the present invention is an illumination light for emitting a light source for white illumination, comprising: a substrate on which one or a plurality of mounting spaces are formed; A first optical device chip which is mounted for each mounting space of the substrate and emits a light source having a wavelength in the range of 400 to 420 nm, and a second optical device chip mounted in the mounting space of the substrate together with the first optical device chip, An LED package constituting a second optical element chip for emitting a light source having a wavelength; A high brightness phosphor filled in a mounting space of the substrate on which the LED package is mounted and forming a light source of the LED package with one optical focus; And a driving controller connected to the substrate and applying a driving signal to the LED package.

Wherein the LED package is arranged so that the first optical device chip and the second optical device chip are collectively configured, and the first optical device chip and the second optical device chip are arranged at a ratio of 1: 1 to 2: 1.

A current balancer for distributing a current amount toward the first optical device chip and the second optical device chip of the LED package and a current balancing device for controlling the current distribution to the current balancer to change the operation mode of the LED package Thereby constituting a variable control means.

In the variable control means of the drive controller, the operation mode of the LED package is selected from among a lighting function and a visible light sterilizing function.

According to the white visible light illumination lamp having the LED package light source close to the solar spectrum according to the present invention, the high luminance phosphor is combined with the LED light source chips of different wavelength bands in one mounting space to form one geometrical optical focus, And the sense of unity of color can be realized at the level of the sunlight with the total color rendering index of 92% or more, and the effect of achieving a white illumination light aiming at high efficiency as a whole can be obtained.

In addition, the white visible light illuminating lamp having the built-in LED package light source close to the solar spectrum according to the present invention can control the current distribution of the LED package so as to be able to control the operation mode in a variable manner. Therefore, functions of illumination and visible light sterilization , The multi-function of the product is promoted. In particular, even when the variable control according to the visible light disinfection of the illumination lamp is attributed to the role of the integrated phosphor in one package, the color feeling as white light is maintained, There is an effect that can be removed.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a bottom view schematically illustrating an embodiment according to the present invention.
2 is a partially enlarged cross-sectional view schematically showing an embodiment according to the present invention.
3 is a block diagram showing an embodiment according to the present invention;
4 is a graph showing the wavelength distribution when in the illumination mode in one embodiment according to the present invention.
5 is a graph showing a wavelength distribution in a visible light sterilization mode according to an embodiment of the present invention.

The present invention provides an illumination lamp for emitting a light source for white illumination, comprising: a substrate on which one or a plurality of mounting spaces are formed; A first optical device chip which is mounted for each mounting space of the substrate and emits a light source having a wavelength in the range of 400 to 420 nm, and a second optical device chip mounted in the mounting space of the substrate together with the first optical device chip, An LED package constituting a second optical element chip for emitting a light source having a wavelength; A high brightness phosphor filled in a mounting space of the substrate on which the LED package is mounted and forming a light source of the LED package with one optical focus; And a drive controller connected to the substrate and adapted to apply a driving signal to the LED package. The white visible light illuminator includes an LED package light source close to the solar spectrum.

Next, a preferred embodiment of a white visible light illumination lamp having an LED package light source close to the solar spectrum according to the present invention will be described in detail with reference to the drawings.

However, the embodiments of the present invention can be modified into various forms, and the scope of the present invention is not construed as being limited to the embodiments described below. The embodiments of the present invention are provided so that those skilled in the art can understand the present invention and the shapes and the like of the elements shown in the drawings are exemplarily shown to emphasize a clearer description.

As shown in FIGS. 1 and 2, an illumination light for emitting a light source for white illumination includes a substrate 10 and a light source , An LED package (20), a high-brightness fluorescent substance (30), and a drive controller (40).

The substrate 10 is formed using a material (for example, aluminum or titanium) whose thermal conductivity is superior to that of synthetic resin or ceramics.

A mounting space 15 having a vertically penetrating or concave shape is formed on the substrate 10.

The mounting space 15 is formed to have one surface or a plurality of surfaces of the substrate 10.

It is preferable that the wall surface forming the mounting space 15 is formed in an inclined surface structure in which the light emitted from the LED package 20 is effectively totally reflected so that the light emitting efficiency can be greatly increased so that the cross- Do. Furthermore, it is preferable that the wall surface of the mounting space 15 is provided with a reflector (not shown) having an excellent reflection efficiency of light, so that the luminous efficiency can be further increased.

As shown in FIG. 2, the LED package 20 is a structure in which two types of optical device chips having different wavelengths are collectively formed in one area, that is, a package in the mounting space 15, The first optical device chip 21 and the second optical device chip 23 are provided for each mounting space 15 of the first optical device chip 21 and the second optical device chip 23, respectively.

The first optical device chip 21 is mounted in the mounting space 15 of the substrate 10 and emits a light source having a wavelength of 400 to 420 nm.

The second optical device chip 23 is located in the mounting space 15 of the substrate 10 together with the first optical device chip 21 and the second optical device chip 23 is located in the mounting space 15 of 460 to 470 nm Thereby forming a light source having a wavelength of a band.

The LED package 20 has a structure in which the first optical device chip 21 and the second optical device chip 23 are collectively arranged. That is, the LED package 20 has a structure in which the first optical device chip 21 and the second optical device chip 23 are collectively formed for each mounting space 15 of the substrate 10. [

The LED package 20 is arranged at a ratio of 1: 1 to 2 between the first optical device chip 21 and the second optical device chip 23.

For example, when one of the first optical device chips 21 is applied to the mounting space 15 of the substrate 10, one or two of the second optical device chips 23 may be applied Thereby forming the LED package 20.

The high-brightness phosphor (30) is configured to fill the mounting space (15) of the substrate (10) on which the LED package (20) is mounted.

The high-brightness fluorescent material 30 forms the light source of the LED package 20, that is, the light source of the first optical device chip 21 and the light source of the second optical device chip 23 as one geometrical optical focal point. That is, when a substantially white light source having a wavelength of 400 to 420 nm of the first optical device chip 21 and a substantially blue light source having a wavelength of 460 to 470 nm of the second optical device chip 23 are irradiated, So that the high-brightness fluorescent material 30 is formed with one geometrical optical focal point to finally realize high-efficiency white light.

The high-brightness phosphor 30 is made of silicon oxide using barium and strontium doped with europium as a fluorescent source, and is manufactured by a process using a water-soluble silicon compound.

In this case, europium has a characteristic of emitting blue light when irradiated with a light source of near ultraviolet light (400 to 420 nm), and in the high-brightness fluorescent substance 30, blue light is irradiated to convert it into yellow light, They are mixed with each other and realized as white.

As described above, when the high-brightness fluorescent material 30 is configured to emit a light source in which a wavelength of 460 to 470 nm is added to the wavelength band of 400 to 420 nm in the LED package 20, the color rendering index (CRI) %, It is possible to realize a white illumination which not only maintains the color of white but also eliminates visual sense of rejection.

Further, although not shown in the drawings, a dense coating film is formed on the surface of the high-brightness fluorescent substance 30, so that the moisture resistance and optical characteristics of the fluorescent substance can be further improved.

The driving controller 40 is connected to the substrate 10 and controls the LED package 20 by applying a driving signal to the LED package 20.

The driving controller 40 determines a sensing signal according to a sensor or an input signal according to an external operation and applies a control signal capable of driving the LED package 20 to the basic driving structure.

3, the drive controller 40 applies a control signal to the LED package 20 so that the first optical device chip 21 and the second optical device chip 20 of the LED package 20 23) for distributing a current amount to the current balancer (41).

The current balancer 41 rationally distributes the current between the rectifying elements connected in parallel between the first optical device chip 21 and the second optical device chip 23.

The drive controller 40 is provided with a variable control means 43 for controlling the current distribution to the current balancer 41.

The variable control means 43 controls the current amount distribution ratio toward the LED package 20 and controls the current balancer 41 to control the operation mode of the LED package 20 by a lighting function and visible light sterilization And the like. That is, the drive controller 40 is capable of controlling the operation mode of the LED package 20 from the illumination of the LED package 20 to an illumination mode for simply illuminating the surroundings and a visible light sterilization mode for healing or treatment, The control of the operation mode of the LED package 20 is performed by applying a control signal to the current balancer 41 through the variable control means 43. [

For example, when the drive controller 40 is set to the lighting operation mode, the variable control means 43 controls the current distribution of the current balancer 41 so that the second light of the LED package 20 The disinfecting function in an effective visible light wavelength band is exerted by adjusting the distribution ratio so that the current distribution toward the device chip 23 is relatively higher than that of the first optical device chip 21. [

4 shows the wavelength distribution in the illumination mode. According to the experiment result of measuring the color rendering property of the LED package 20 by adding a wavelength of 460 to 470 nm band to the wavelength band of 400 to 420 nm and measuring the color rendering property by the meter, We have obtained an observation that the index (CRI) is improved to 97 and the white illumination is realized.

FIG. 5 shows the wavelength distribution in the visible light sterilization mode. As a result of an experiment in which the LED package 20 was controlled to a single wavelength in a band of 400 to 420 nm and the color rendering property was measured by a meter, the color rendering index (CRI) 93). Observation results were obtained that the final white light, which is the result of this wavelength conversion, is close to the blackbody locus line and functions as a basic illumination. In other words, unlike the method that the blue light is reflected through the window / doorway by the existing visible light disinfection light at the hotel or the hospital, the color temperature similar to incandescent color is implemented, which is about 2000 ~ 2700K level. And it does not affect the surrounding atmosphere and the surrounding business activities.

Even in the case of variable control for changing the operation mode in the drive controller 40, it is possible to maintain the color and feel as white light due to the role of the high-brightness fluorescent material 30 integrated in one LED package 20. [

As described above, by controlling the current distribution of the LED package 20 so as to variably control the operation mode, the functions of the illumination and the sterilizing of the visible light can be selectively exerted to enhance the versatility of the product. In particular, It is possible to eliminate the sensory rejection because the phosphor functions as an integrated phosphor in one package even in the variable control according to the sterilization so that the color feeling as white illumination is maintained while being visually perceived visually.

In the present invention, the illuminating lamp can be applied to a portable type lamp or a fixed type lamp without any discrimination, and it is possible to use all kinds of lamps (for example, incandescent lamp type, fluorescent lamp type, halogen lamp type, PAR type lamp type, As shown in FIG.

That is, according to the white visible light illumination lamp having the built-in LED package light source close to the solar spectrum according to the present invention constructed as described above, the high luminance fluorescent substance is mixed with the LED light source chips of different wavelength bands in one mounting space, Since the focus is formed, it is possible to realize a sense of unity of sensation and color with a solar light level having a total color rendering index of 92% or more, and it is possible to realize a white illumination lamp aiming at high efficiency as a whole.

Although the preferred embodiments of the white visible light illumination lamp having the LED package light source close to the solar spectrum according to the present invention have been described above, the present invention is not limited thereto, but may be embodied in the scope of claims, It is possible to carry out various modifications, and this is also within the scope of the present invention.

10: substrate 15: mounting space
20: LED package 21: first optical device chip
23: second optical element chip 30: high luminance phosphor
40: drive controller 41: current balancer
43: Variable control means

Claims (4)

An illumination lamp for emitting a light source for white illumination, comprising: a substrate on which one or a plurality of mounting spaces are formed; A first optical device chip which is mounted for each mounting space of the substrate and emits a light source having a wavelength in the range of 400 to 420 nm, and a second optical device chip mounted in the mounting space of the substrate together with the first optical device chip, An LED package constituting a second optical element chip for emitting a light source having a wavelength; A high brightness phosphor filled in a mounting space of the substrate on which the LED package is mounted and forming a light source of the LED package with one optical focus; And a driving controller connected to the substrate and applying a driving signal to the LED package,
Wherein the LED package includes the first optical device chip and the second optical device chip arranged in a lump, wherein the first optical device chip and the second optical device chip are arranged at a ratio of 1: 1 to 2,
The high-brightness phosphor is made of a silicon oxide using barium and strontium doped with europium as a fluorescent source, and is manufactured by a process using a water-soluble silicon compound,
A current balancer for distributing a current amount toward the first optical device chip and the second optical device chip of the LED package and a current balancing device for controlling the current distribution to the current balancer to change the operation mode of the LED package And a variable control means
The variable control means of the drive controller may be configured to select one of an operation mode of the LED package and a visible light sterilization function. In the illumination mode, a wavelength of 460 to 470 nm is added to a wavelength of 400 to 420 nm, White visible light with a built-in LED package light source close to the solar spectrum that implements a white light with an exponent of 97 and a white light with a color temperature of 2000 to 2700K controlled by a single wavelength of 400 to 420 nm in visible light sterilization mode.
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