KR101686868B1 - Led lighting device with color temperature control - Google Patents

Abstract

It is an object of the present invention to provide an LED lighting device capable of changing output of uniform illumination and color temperature and capable of controlling the color temperature to provide sufficient brightness at a changed color temperature. To this end, the present invention provides a portable terminal comprising: a cap portion having a storage space therein; A body portion coupled to the cap portion and having a socket portion for supplying power to the light source portion; A light source unit including a first LED module installed in the body and outputting light at an arbitrary color temperature and a second LED module outputting control light so that the color temperature of the light outputted from the first LED module is changed; And a color mixing cover installed at an upper portion of the light source to mix light output from the first and second LED modules of the light source unit. And a control module for outputting operation control signals to the first LED module and the second LED module of the light source unit. Therefore, the present invention has the advantage of being capable of changing the output of the uniform illumination and the color temperature and providing sufficient brightness at the changed color temperature.

Description

TECHNICAL FIELD [0001] The present invention relates to a LED lighting device capable of controlling color temperature,

The present invention relates to an LED lighting device capable of color temperature control, and more particularly, to an LED lighting device capable of controlling the output of uniform illumination, changing the color temperature, and providing sufficient brightness at a changed color temperature .

In general, an incandescent lamp is a light source in which a filament wire is put in a vacuum glass bulb and the filament is heated to a high temperature when the power is applied. The filament is thinned and evaporated at a high temperature, so argon and nitrogen Mixed gas is put in to suppress the evaporation and extend the life of bulb.

Conventional incandescent lamps emit near-natural light to relieve eye fatigue and are easily removable into sockets, making them one of the most widely used lighting fixtures with fluorescent lamps. However, most of the energy is emitted as heat, And since the lifetime of the filament itself is short, it can not be used for a long time and has a disadvantage in durability. However, since it has an advantage that it can be produced at low cost, it is used in many places today.

Recently, there has been an attempt to use LED as a light source as a durable light bulb that can be used for a long time while lowering power consumption and raising the illuminance.

These LEDs (light emitting diodes) are light sources that emit light when a voltage is applied to a semiconductor. They have been improved in brightness over the past several years and can be used for lighting purposes. And the use thereof for general light bulb is spreading because of its short life span.

FIG. 1 is an exploded perspective view showing a configuration of a lighting device using a general LED, and FIG. 2 is a cross-sectional view illustrating a lighting device using the LED.

1 and 2, the LED lighting device includes a cap portion 10 having an opening 11 formed at a lower portion thereof and having a cap engaging portion 12 for engaging with the body portion 20, A body portion 20 formed with a socket portion 21 for connecting to a power terminal and a body coupling portion 22 for coupling with a cap 10 on an outer periphery of an upper portion of the body portion 20, And a plurality of LED modules 30, 31, and 32 for emitting light.

An illumination device using such an LED is disclosed in Korean Patent Laid-Open No. 10-2013-0056291 (entitled "Illumination Device").

Meanwhile, the LED lighting device according to the related art outputs a white light by combining an LED module and a phosphor that combine blue, red, and green, or outputs an arbitrary color, and the white light is a cool white or a warm White (Warm White).

However, in the conventional LED lighting apparatus, when the white light is outputted by combining the LED module and the phosphor that output arbitrary colors, the already set color temperature can not be changed to the other color temperature and output.

In addition, when white light is output by combining blue, red, and green, the set color temperature can be changed, but the required color temperature and brightness can not be controlled due to uneven mixing of output light.

Korean Patent Publication No. 10-2013-0056291

It is an object of the present invention to provide an LED lighting device capable of controlling output of uniform illumination and color temperature and capable of providing sufficient brightness at a changed color temperature.

According to an aspect of the present invention, there is provided a portable terminal comprising: a cap unit having a storage space therein; A body portion coupled to the cap portion and having a socket portion for supplying power to the light source portion; A first LED module installed in the body portion and installed at the center of the substrate and outputting light at an arbitrary color temperature; a second LED module installed in a ring shape spaced apart from the first LED module by a predetermined distance, An LED module, a green LED module, and an LED module in which at least one color of blue, red, and green is mixed with an arbitrary phosphor to output control light so that the color temperature of the light output from the first LED module is changed A light source unit having a second LED module; And a second LED module provided on the bottom surface of the mixed color cover body for outputting light from the first LED module and the second LED module, And a second incidence surface provided on an inner surface of the mixed color cover body to receive light output from the first LED module and the second LED module. And a control module for outputting an operation control signal to the first LED module and the second LED module of the light source unit, wherein the second incident surface has a small size of concavities and convexities from the lower region to the upper region of the mixed color cover body A first pattern, a second pattern, and a third pattern are formed on the first LED module to generate total reflection by different refractive indices depending on the magnitudes of the first through third patterns, And the mixed light is mixed with light of the second LED module incident through the incident surface.

Further, the light source unit according to the present invention is a COB (Chip On Board) type LED module.

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Further, the first incident surface according to the present invention is characterized in that a concave-convex micropattern is formed on the surface.

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Further, the control module according to the present invention may include a data communication unit connected to an external device and receiving a color temperature control signal; And a control unit for analyzing the color temperature control signal received from the data communication unit to detect a pre-stored operation signal and outputting an operation control signal to the first LED module and the second LED module, respectively, in accordance with the detected operation signal .

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In addition, the data communication unit according to the present invention operates in at least one of Bluetooth, ZigBee, Wi-Fi, WUSB, and power line communication.

The present invention is advantageous in that uniform light output and color temperature can be changed and sufficient brightness at a changed color temperature can be provided.

1 is an exploded perspective view showing a configuration of a lighting apparatus using a general LED.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]
3 is a perspective view showing an LED lighting device capable of color temperature control according to the present invention.
4 is an exploded perspective view showing a configuration of an LED illumination device capable of color temperature control according to the present invention.
5 is a cross-sectional view showing the structure of an LED lighting device capable of color temperature control according to the present invention.
6 is a cross-sectional view showing a structure of a mixed cover portion of an LED lighting device capable of color temperature control according to the present invention.
FIG. 7 is a block diagram showing a configuration of a control unit of an LED lighting device capable of color temperature control according to the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of an LED lighting device capable of controlling color temperature according to the present invention will be described in detail with reference to the accompanying drawings.

4 is an exploded perspective view illustrating a configuration of an LED lighting device capable of color temperature control according to the present invention. FIG. 5 is a schematic view illustrating a color temperature control FIG. 6 is a cross-sectional view illustrating a structure of a mixed cover portion of an LED lighting device capable of controlling color temperature according to the present invention, and FIG. 7 is a cross-sectional view illustrating a structure of a LED lighting device Fig.

As shown in FIGS. 3 to 7, the LED lighting apparatus 100 capable of controlling the color temperature according to the present invention is capable of outputting a uniform color temperature and changing the color temperature, and controlling the brightness of the changed color temperature, A body part 120, a light source part 130, a mixed color cover part 140, and a control module 150.

The cap part 110 is formed of either a spherical or an aspherical surface and a storage space is formed therein to accommodate the light source part 130 and the mixed color cover part 140 and the opening part 111 is formed at the lower part.

The cap part 110 is formed with a cap engaging part 112 to be engaged with the body part 120 at the lower part where the opening 111 is formed so that the user can selectively separate the cap part 110 and the body part 120 Or to separate the cap portion 110 and the body portion 120 from each other.

The cap 110 is made of an opaque plastic material and a diffusion agent is coated on the inner surface of the cap 110 to increase the diffusion of light.

The body part 120 is provided with a socket part 121 connected to a power supply terminal at a lower portion thereof and a base mounting part 122 is installed at an upper part of the body part 120, And a body coupling part formed with threads to be coupled to the cap coupling part 112 of the cap part 110 so as to be detachably coupled is provided on the outer periphery.

In addition, rectifying means (not shown) for rectifying the power supplied through the socket portion 121 and outputting an operation control signal for controlling the operation of the light source 130 is provided in the body portion 120, (150).

The base mounting part 122 may include a base part 160 for absorbing heat generated from the light source part 130 and conducting to the body part 120. The light source part 130 may be connected to the base part 160, And the color mixing cover unit 140 can be installed at a predetermined position of the cap unit 110.

The light source unit 130 includes a substrate 131 and a first LED module installed at the center of the substrate 131 and outputting light at an arbitrary color temperature And a second LED module 133 for outputting control light so that the color temperature of light output from the first LED module 132 is changed. The light source unit 130 includes a COB (Chip On Board) ) Type LED module, but the present invention is not limited thereto, and a well-known package type LED module may be used.

The first LED module 132 is installed at the center of the substrate 131 and outputs light at an arbitrary color temperature (for example, cool white of 5700K or more), and operates as a main light source of the illumination device 100 .

The second LED module 133 is installed in a ring shape spaced apart from the first LED module 132 by a predetermined distance and controls the color temperature of the light output from the first LED module 132, A red LED module 133b, a green LED module 133c, and an LED module in which at least one of blue, red, and green colors and an arbitrary phosphor are mixed.

The mixed color cover unit 140 is disposed on the light source unit 130 to mix light output from the first and second LED modules 132 and 133 of the light source unit 130. The mixed color cover unit 140 includes a color mixing cover body 141, a first incident surface 141, and a second incident surface 142.

The mixed color cover body 141 is a semi-spherical member having a hollow inside and passes through the through hole 1340 of the light source unit 130 through the support portion 140a, And is fixed to the upper portion of the light source unit 130.

In addition, when the light output from the first and second LED modules 132 and 133 is incident on the mixed color cover body 141, the incident light is totally reflected, refracted, and transmitted by the mixed color cover body 141 So as to be output in the direction of the cap part 110.

The first incident surface 142 is provided on the bottom surface of the mixed color cover body 141 having a hemispherical shape and is preferably disposed on the second LED module 133 of the light source unit 130, 133 to be incident on the mixed-color cover member body 141.

In addition, the first incident surface 142 has a concave-convex micropattern formed on its surface, and the light output from the second LED module 133 is refracted by the mixed color cover body 141 through total reflection along the incident angle, So that the mixing ratio of light incident from the second incident surface 143 can be increased.

The second incident surface 143 is provided on the inner surface of the hemispherical composite cover body 141 and the light output from the first LED module 132 of the light source unit 130 and the light output from the second LED module 133, A portion of the light output from the first LED module 132 is incident on the first LED module 132,

In addition, the second incident surface 143 has a first pattern 143a, a second pattern 143b, and a third pattern 143c formed on its surface along the inner surface.

The first pattern 143a, the second pattern 143b and the third pattern 143c are formed so that the pattern size becomes smaller toward the upper portion from the lower portion of the mixed color cover body 141.

That is, the first pattern 143a is formed to have a predetermined size D1 in the lower region of the mixed color cover body 141 and the size of the first pattern 143a is formed in the middle region of the mixed color cover body 141, And a second pattern 143b having a size D2 smaller than the first pattern 143. A size D3 smaller than the size D2 of the second pattern 143b is formed in an upper region of the mixed color cover body 141, The third pattern 143c is formed.

The first to third patterns 143a, 143b and 143c are formed in such a manner that the incident angle of light output from the first LED module 132 is different from that of the first to third patterns 143a, 143b and 143c, So that the color mixture with the light incident through the first incident surface 142 can be performed more easily, so that uniform color mixing can be achieved as a whole.

The first to third patterns 143a, 143b and 143c are formed over the entire area of the inner surface of the mixed color cover body 141. However, in some areas of the mixed color cover body 141 , The lower region).

The control module 150 is disposed inside the body 120 and controls the first LED module 132 and the second LED module 133 of the light source unit 130 to perform on / And includes a data communication unit 151 and a control unit 152. [

The data communication unit 151 is connected to an external device (not shown) through a wired or wireless network, receives the color temperature control signal of the illumination device 100 transmitted from the external device, and outputs the color temperature control signal to the control unit 152.

The data communication unit 151 uses a communication format such as a power line communication, a Bluetooth communication, a Zigbee communication, a WiFi communication, and a WUSB communication with an external device.

The control unit 152 analyzes the color temperature control signal received from the data communication unit 151 and outputs the first LED module 132 and the second LED module 132 corresponding to the color temperature control signal stored in advance corresponding to the analyzed color temperature control signal 133, and outputs an operation control signal to the first LED module 132 and the second LED module 133, respectively, in accordance with the detected operation signal.

That is, the control unit 152 outputs the operation control signal to the first LED module 132 so that the first LED module 132 can output light with a predetermined brightness according to the set color temperature, and the mixed cover unit 140 The second LED module 133 outputs an operation control signal for controlling the color temperature so that the brightness of the illumination device 100 is maintained and the color temperature is changed, for example, 5700K or more It becomes possible to change from cool white to warm white between 5700K and 3000K.

Accordingly, it is possible to provide a lighting apparatus which can maintain the brightness of the main light source, control the color temperature, and output light uniformly mixed in the whole.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. It can be understood that

In the course of the description of the embodiments of the present invention, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, , Which may vary depending on the intentions or customs of the user, the operator, and the interpretation of such terms should be based on the contents throughout this specification.

100: illumination device 110: cap part
111: opening portion 112: cap coupling portion
120: body part 121:
122: base mounting part 130: light source part
131: substrate 132: first LED module
133: second LED module 133a: blue LED module
133b: Red LED module 133c: Green LED module
140: a color mixing cover 140a:
141: color mixing cover body 142: first incident surface
143: second incident surface 143a: first incident surface 143a:
143b: second pattern portion 143c: third pattern portion
150: Control module 151: Data communication part
152: control unit 160:

Claims (9)

A cap portion 110 having a storage space therein;
A body portion 120 coupled to the cap portion 110 and having a socket portion 121 for supplying power to the light source portion 130 at a lower portion thereof;
A first LED module 132 installed in the body 120 and installed at the center of the substrate 131 to output light at an arbitrary color temperature; And at least one of the blue LED module 133a, the red LED module 133b, the green LED module 133c and the LED module in which at least one color of blue, red, And a second LED module (133) for outputting control light so that a color temperature of light output from the first LED module (132) is changed;
A hemispherical mixed cover body 141 for forming a hollow inside the first and second LED modules 132 and 133 and mixing the incident light outputted from the first and second LED modules 132 and 133, A first incident surface 142 disposed on the bottom surface of the first LED module 132 to receive light output from the second LED module 133 and a second incident surface 142 disposed on an inner surface of the mixed color cover body 141, And a second incident surface (143) through which light output from the second LED module (133) is incident; And
And a control module 150 for outputting operation control signals to the first LED module 132 and the second LED module 133 of the light source unit 130,
The second incident surface 143 is formed by a first pattern 143a, a second pattern 143b and a third pattern 143c so that the size of the concave and convex shape becomes smaller from the lower region of the mixed color cover body 141 toward the upper region. ) So that the incident angle of the light output from the first LED module 132 is totally reflected by different refractive indexes depending on the sizes of the first to third patterns 143a, 143b, and 143c, And the color of the second LED module (133) incident through the surface (142) is mixed with the light of the second LED module (133).
delete The method according to claim 1,
Wherein the light source unit (130) is a COB (Chip On Board) type LED module.
delete The method according to claim 1,
Wherein the first incident surface (142) has a concavo-convex micropattern formed on the surface thereof.
delete delete The method according to claim 1,
The control module 150 includes a data communication unit 151 connected to an external device and receiving a color temperature control signal; And
The color temperature control signal received by the data communication unit 151 is analyzed to detect a pre-stored operation signal, and the operation of the first LED module 132 and the second LED module 133 is controlled according to the detected operation signal. And a control unit (152) for outputting a signal.
9. The method of claim 8,
Wherein the data communication unit (151) operates in at least one communication format of Bluetooth, Zigbee, Wi-Fi, WUSB, and power line communication.

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