KR20140089782A - Lighting device using Light Emitted Diode - Google Patents

Lighting device using Light Emitted Diode Download PDF

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Publication number
KR20140089782A
KR20140089782A KR1020130001637A KR20130001637A KR20140089782A KR 20140089782 A KR20140089782 A KR 20140089782A KR 1020130001637 A KR1020130001637 A KR 1020130001637A KR 20130001637 A KR20130001637 A KR 20130001637A KR 20140089782 A KR20140089782 A KR 20140089782A
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KR
South Korea
Prior art keywords
light
led
lighting apparatus
emission control
light emitted
Prior art date
Application number
KR1020130001637A
Other languages
Korean (ko)
Inventor
최규만
Original Assignee
관동대학교산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 관동대학교산학협력단 filed Critical 관동대학교산학협력단
Priority to KR1020130001637A priority Critical patent/KR20140089782A/en
Publication of KR20140089782A publication Critical patent/KR20140089782A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K2/00—Non-electric light sources using luminescence; Light sources using electrochemiluminescence
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Planar Illumination Modules (AREA)

Abstract

An illumination device of a photometric method using an LED is disclosed.
An illumination device of a photometric method for forming a surface light source using an LED which is a point light source,
A shell-type receiver having a side surface on which the LEDs are installed and the inside of which is formed of a reflector;
A light reflecting structure installed on a bottom surface of the receiver for reflecting a traveling direction of light emitted from the LED at a substantially right angle;
A light emission control plate for adjusting an amount of light emitted from the light reflecting structure; And
A diffusion plate for diffusing light emitted from the light emission control plate; .

Description

Technical Field [0001] The present invention relates to a lighting device using a light emitting diode (LED)

In particular, the present invention relates to a light emitting device using a light emitting diode (LED), and more particularly, to a light reflecting structure that reflects light emitted from an LED to a surface of a lighting device, To a lighting apparatus which is thin in thickness, light in weight, and can reduce a cost burden by providing a light emission control film for controlling the light amount.

Lighting using LEDs has advantages such as long life and low power consumption.

Since the LED is a point light source, LEDs must be arranged two-dimensionally in order to realize a planar light source using the point light source.

Fig. 1 shows an example of a conventional LED lighting apparatus, and shows an example of a direct-down type. Referring to FIG. 1, a lighting apparatus in which LED chips 12 are arranged in the form of a two-dimensional matrix on the bottom of a housing-type receiver 10 and a diffusion plate 14 is provided on an upper surface thereof is disclosed.

The diffusion plate 14 serves to diffuse the light incident thereon and serves to uniformly emit light from the surface of the illumination device 100.

The conventional lighting device as shown in FIG. 1 has also been used as a light source of an LCD TV.

In recent years, however, the light efficiency of the LED has been improved and the LED with high luminance characteristics has become possible, so that a side light type illumination device has been proposed rather than a direct lower structure.

2 shows another example of a conventional LED illumination device and shows an example of a light-metering method.

Referring to Fig. 2, an illumination device is provided in which LEDs 22 are provided on the side surfaces of the light guide plate 20, and a diffusion plate 24 is provided on the upper surface of the light guide plate 20. The light incident on the light guide plate 20 is radiated from the bottom surface on which the concavities and convexities are formed and is emitted to the upper surface of the light guide plate 20.

The conventional lighting device as shown in Fig. 2 is used as a light source of an LED TV.

However, the conventional lighting apparatus as shown in FIG. 2 necessarily requires the light guide plate 20, which causes a disadvantage that the weight of the light guide plate 20 increases the weight of the lighting apparatus 200. In addition, since the material cost of the light guide plate 20 is high and the processing cost is separately required, the cost of the lighting apparatus is increased.

In order to overcome such disadvantages, it has been proposed to use a parabolic light reflector without using a light guide plate.

Fig. 3 shows another embodiment of a conventional LED illumination device. Fig. 3 shows an example using a parabolic light reflector in the light measuring method.

Referring to FIG. 3, the light reflector 30 reflects the light emitted from the side mounted LED 32 and emits it to the surface of the illumination device 300. For this, the light reflector 30 has a parabolic shape.

However, in the conventional lighting apparatus as shown in FIG. 3, since the light reflector 30 has an appropriate curvature, there is a problem that the thickness of the lighting apparatus 300 becomes significantly thicker than that of the light guide plate .

It is an object of the present invention to solve the above problems and to provide a light guide plate type lighting apparatus which has advantages of a thin thickness and an advantage of a lighting apparatus which does not use a light guide plate, It is an object of the present invention to provide an improved illumination device that can be accommodated at the same time.

According to an aspect of the present invention, there is provided an illumination device using LEDs,

A light emitting device of a photometric method for forming a surface light source by using an LED which is a point light source,

A shell-type receiver having a side surface on which the LEDs are installed and the inside of which is formed of a reflector;

A light reflecting structure installed on a bottom surface of the receiver for reflecting a traveling direction of light emitted from the LED at a substantially right angle;

A light emission control plate for adjusting an amount of light emitted from the light reflecting structure; And

A diffusion plate for diffusing light emitted from the light emission control plate;

And a control unit.

Here, the lower part of the light emission control plate is formed of a reflector, and holes having a predetermined size are formed at predetermined intervals.

Here, it is preferable to further include a reflection film provided around the LED.

It is further preferred that the light guiding lens further comprises a linear condensing lens for emitting light having a radial distribution intensity emitted from the LED as parallel light.

The lighting apparatus of the present invention has the effect that the thickness of the light reflector is reduced and the thickness of the lighting apparatus is reduced since the light reflector has a shape in which irregularities are formed without having a parabolic surface shape.

Further, the lighting apparatus according to the present invention has the effect of reducing the weight of the lighting apparatus and reducing the cost burden by using a light reflector instead of the light guide plate.

Fig. 1 shows an example of a conventional LED lighting apparatus.
2 shows another example of a conventional LED illumination device.
Fig. 3 shows another embodiment of a conventional LED illumination device.
4 shows a configuration of an embodiment of a lighting apparatus using an LED according to the present invention.
5 shows a configuration of another embodiment of a lighting apparatus using LED according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

4 shows a configuration of an embodiment of a lighting apparatus using an LED according to the present invention.

The illumination device 400 according to the present invention realizes a surface light source by using the LED 42 as a point light source.

4, a lighting apparatus 400 according to the present invention includes a housing 40, an LED 42, a light reflecting structure 44, a diffuser plate 46, and a diffuser plate 46, And a disposed light emission control plate 48.

The receptacle 40 has a side wall 40a and a bottom surface 40b in which a light reflecting structure 44 is installed.

The LED 42 is mounted on the side wall 40a of the receiver 40 to realize a light measuring method. It is preferable that the side wall 40a and the bottom surface 40b of the receiver 40 are formed of a reflector that reflects light.

The light reflecting structure 44 is provided on the bottom surface 40b of the receiver 40 and a plurality of wedges 44a to 44n protruding upward are disposed at regular intervals. The surface of each of the plurality of wedges 44a through 44n has a predetermined curvature so that light incident on the wedge 44a is reflected toward the surface of the illumination device 400. [ On the other hand, virtual curves connecting the tips of the plurality of wedges 44a to 44n form a triangle.

And a light emission control plate 48 for controlling the amount of light emitted through the diffusion plate 46 is provided below the diffusion plate 46.

Holes 48a to 48n having a predetermined size are formed at predetermined intervals in the light emission control plate 48. [ The size of the holes 48a to 48n is smaller the closer the LED 42 is and becomes the maximum at the central portion of the illumination device 400. [ The size of the holes 48a to 48n depends on the design formula.

Here, the lower part of the light emission control plate 48 should have a condition that light can be reflected to near 100%. A diffuser plate 46 is disposed thereon at a predetermined distance from the light emission control plate 48. The diffusion plate 47 serves to prevent the shape of the holes 48a to 48n formed in the light emission control plate 48 from being exposed.

5 shows a configuration of another embodiment of a lighting apparatus using LED according to the present invention.

The illumination device 500 shown in FIG. 5 includes a reflection film 52 installed around the LED 42 and a linear condenser lens (not shown) for emitting light having a radial distribution intensity emitted from the LED 42 as parallel light 54).

Since the periphery of the LED 42 is the region where the intensity of light is the largest, a reflection film 52 of 100% or less of light is provided here. This reflective film 52 allows light to be transmitted to the center of the illumination device 500 without being absorbed and lost at the periphery of the LED 42.

The light emitted from the LED 42 has a radial distribution intensity which causes the light emitted from the LED 42 to be emitted as parallel light so that light reaches the center of the illumination device 500 at a maximum Make it possible to reach a lot.

40 ... receptor 42 ... LED
44 ... light reflecting structure 46 ... diffuser plate
52 ... reflective film 54 ... linear condenser lens

Claims (5)

1. A lighting apparatus of a photometric method for forming a surface light source using LEDs (point light sources)
A housing-type receiver in which the LED is installed on a side surface and the inside is formed as a reflector;
A light reflecting structure provided on a bottom surface of the receptor and reflecting the traveling direction of light emitted from the LED to a surface side;
A light emission control plate for adjusting an amount of light emitted from the light reflecting structure; And
A diffusion plate for diffusing light emitted from the light emission control plate;
≪ / RTI >
The lighting apparatus as claimed in claim 1, wherein a lower portion of the light emission control plate is formed of a reflector, and holes having a predetermined size are formed at predetermined intervals.
The lighting device according to claim 1, further comprising a reflective film provided around the LED.
4. The lighting apparatus according to claim 3, further comprising a linear condenser lens for emitting light having a radial distribution intensity emitted from the LED as parallel light.
The light-emitting device according to claim 1,
Wherein a plurality of wedges protruding from a bottom surface of the receiver are arranged at regular intervals and the surface of each of the plurality of wedges has a predetermined curvature so that light incident thereon And a virtual line connecting the tips of the plurality of wedges forms a triangle.
KR1020130001637A 2013-01-07 2013-01-07 Lighting device using Light Emitted Diode KR20140089782A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130001637A KR20140089782A (en) 2013-01-07 2013-01-07 Lighting device using Light Emitted Diode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130001637A KR20140089782A (en) 2013-01-07 2013-01-07 Lighting device using Light Emitted Diode

Publications (1)

Publication Number Publication Date
KR20140089782A true KR20140089782A (en) 2014-07-16

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Family Applications (1)

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KR1020130001637A KR20140089782A (en) 2013-01-07 2013-01-07 Lighting device using Light Emitted Diode

Country Status (1)

Country Link
KR (1) KR20140089782A (en)

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