WO2010117167A2 - Led lighting apparatus, and surface emitting method for the led lighting apparatus - Google Patents

Led lighting apparatus, and surface emitting method for the led lighting apparatus Download PDF

Info

Publication number
WO2010117167A2
WO2010117167A2 PCT/KR2010/002064 KR2010002064W WO2010117167A2 WO 2010117167 A2 WO2010117167 A2 WO 2010117167A2 KR 2010002064 W KR2010002064 W KR 2010002064W WO 2010117167 A2 WO2010117167 A2 WO 2010117167A2
Authority
WO
WIPO (PCT)
Prior art keywords
light
led
guide plate
led lighting
groove
Prior art date
Application number
PCT/KR2010/002064
Other languages
French (fr)
Korean (ko)
Other versions
WO2010117167A3 (en
Inventor
김덕용
Original Assignee
Kim Duk-Yong
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 Kim Duk-Yong filed Critical Kim Duk-Yong
Publication of WO2010117167A2 publication Critical patent/WO2010117167A2/en
Publication of WO2010117167A3 publication Critical patent/WO2010117167A3/en

Links

Images

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
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/69—Details of refractors forming part of the light source
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/855—Optical field-shaping means, e.g. lenses
    • 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
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/68—Details of reflectors forming part of the light source
    • 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
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems

Definitions

  • the present invention relates to an LED lighting device and a surface light emitting method of the LED lighting device, and more particularly to a surface lighting method of the LED lighting device and the LED lighting device capable of uniform surface light emitting.
  • the general LED lighting apparatus is researching that the light of the LEDs can be uniformly diffused in the light guide plate so that a constant amount of light can be emitted from the entire surface.
  • the LED lighting device is mostly brighter than the LED is located.
  • the problem to be solved by the present invention in view of the above problems is to provide an LED lighting device and a surface light emitting method of the LED lighting device that can make the roughness of the upper side and the peripheral portion of the LED uniform.
  • LED lighting device and LED lighting that can be made uniform surface emission by changing the shape of the light guide plate without changing the shape of the substrate on which the LED is mounted or the structure of the reflecting plate on the substrate
  • the present invention provides a method for surface emitting light of a device.
  • the light guide plate having an LED mounted on the substrate, the receiving groove for accommodating the LED on the bottom, an upper groove provided in a part of the light guide plate, and the upper groove And a surface light emitting auxiliary material that transmits a part of the light emitted from the LED to the upper side, diffuses the transmitted light, and reflects the remaining light to the substrate side.
  • the surface light-emitting method of the LED lighting apparatus of the present invention for solving the above problems, the step of reflecting a part of the light of the LED to the lower side of the light guide plate and transmitting so that less light is reflected than the reflected light and And diffusing the transmitted light from the upper side of the LED, thereby compensating for the difference in illuminance of the upper part of the LED and the illuminance of the peripheral part according to the reflection of the light of the LED.
  • the present invention includes reflecting means for reflecting the light of the LED in the light guide plate of the upper side of the LED, to transmit a portion of the light in the center of the reflecting means, so that a portion of the transmitted light is diffused on the upper side of the LED As a result, there is an effect that uniform surface light emission of the upper side and the peripheral portion of the LED is achieved.
  • the present invention implements the structure of the other parts in a general form, and by changing only the structure of the light guide plate can be uniform surface light emission of the upper side and the periphery of the LED is easy to manufacture and reduce the manufacturing cost There is.
  • FIG. 1 is a cross-sectional perspective view of a first embodiment of the LED lighting apparatus of the present invention.
  • FIG. 2 is a cross-sectional view of another embodiment of the reflective surface of FIG. 1.
  • FIG. 2 is a cross-sectional view of another embodiment of the reflective surface of FIG. 1.
  • FIG 3 is a cross-sectional perspective view of a second embodiment of the LED lighting apparatus of the present invention.
  • FIG. 4 is a cross-sectional perspective view of a third embodiment of the LED lighting apparatus of the present invention.
  • FIG. 5 is a cross-sectional view of a fourth embodiment of the LED lighting apparatus of the present invention.
  • FIG. 6 is a sectional view of a fifth embodiment of the LED lighting apparatus of the present invention.
  • FIG. 1 is a perspective view showing a cross-sectional configuration of the first embodiment of the LED lighting apparatus of the present invention.
  • the LED 20 is mounted on the substrate 20 and the upper portion of the substrate 20, and the LED 10 is disposed on a portion of a bottom surface thereof.
  • An accommodation groove 31 that can be accommodated is provided and includes a light guide plate 30 including an upper groove 32 provided on an upper side of the accommodation groove 31, and an upper groove 32 of the light guide plate 30. It is positioned to guide a part of the light of the LED to the inside and diffused so as to have a uniform illuminance with the periphery, and includes a surface light emitting auxiliary base 40 for transmitting the reflected light according to the reflection angle.
  • the surface light emitting auxiliary material 40 is provided at a central portion of the bottom surface which is engaged with the upper groove 32, and a light transmitting surface 41 for transmitting a part of light of the LED 10, and the light transmitting surface 41. It is provided on the inclined surface of the periphery and reflecting part of the light of the LED 10 reflects a portion 42, and provided in the form of a groove on the upper surface of the light transmission surface 41 is transmitted through the light transmission surface 41 And a reflecting groove 43 for reflecting and transmitting the light, and a diffuser 44 for uniformly diffusing the light reflected through the reflecting groove 43.
  • the reflective layer is formed on the surface of the substrate 20, and a plurality of LEDs 10 are mounted on the substrate 20.
  • the LED 10 may be packaged with one or more LED bare chips or one or more LED bare chips.
  • the light guide plate 30 is attached to the upper portion of the substrate 20 to diffuse the light emitted from the LED 10 to enable surface emission. At this time, in order to accommodate the LED 10 positioned higher than the substrate 20, the light guide plate 30 is provided with a receiving groove 31.
  • An air layer may be filled between the accommodating groove 31 and the LED 10, and when the LED 10 is a bare chip, an encapsulant having a refractive index different from that of the light guide plate 30 may be filled. Can be. As such, the medium filled with the air or the encapsulant filled in the accommodating groove 31 may further intensify the light diffusion due to the difference in refractive index with the light guide plate 30.
  • an upper groove 32 is provided on a top surface of the light guide plate 30 at a position corresponding to the receiving groove 31.
  • the shape of the upper groove 32 is a flat surface in the center portion, the inclined surface is formed so that the depth of the groove becomes shallower toward the peripheral portion.
  • the surface light emitting auxiliary material 40 is coupled to the upper groove 32 of the light guide plate 30.
  • the bottom shape of the surface light emitting auxiliary base 40 is a structure that can be engaged with the upper groove 32, the inclined surface of the bottom is a reflective surface 42 which is a mirror-treated surface or a surface coated with a reflective layer is formed In the center of the upper groove 32 is provided a light transmitting surface 41 which is a flat surface.
  • the light transmitting surface 41 is used to transmit the light emitted from the LED 10 into the upper groove 32.
  • the upper surface of the surface light emitting auxiliary material 40 corresponding to the light transmitting surface 41 is provided with a means for reflecting the transmitted light, the means is a reflective groove 43 in the form of a groove, the reflection The light is partially prevented from being transmitted to the outside due to the difference in refractive index between the surface of the groove 43 and the air thereon and the inclination angle of the interface thereof.
  • the cone shape in the form of the reflective groove 43 is shown, the present invention is not limited to the cone shape in the form of the groove, it can be implemented in various forms.
  • the light reflected from the reflecting groove 43 is reflected back from the reflecting surface 42 located on the bottom inclined surface of the surface light emitting auxiliary material 40, and the diffusion is generated in the diffusion part 44 so that the surface light emitting auxiliary material ( Uniform surface luminescence is possible on the surface of 40).
  • the light that is not transmitted through the light transmissive surface 41 of the LED 10 is reflected by the reflecting surface 42, and the reflected light is reflected on the substrate 20 or the substrate 20.
  • the reflection is made by the provided reflection layer, and the surface of the light guide plate 30 is uniformly emitted.
  • a difference may be prevented from occurring in the roughness of the upper surface of the LED 10 and the peripheral portions other than the upper surface thereof by using a light portion of the LED 10. Uniform surface light emission can be easily performed.
  • FIG. 2 is a configuration diagram of another embodiment of the reflective surface 42.
  • the reflective surface 42 of the first embodiment is formed on the entire inclined bottom of the surface light emitting auxiliary base 40, but may be formed on a portion of the inclined bottom.
  • the light may be introduced into the diffuser 44 of the surface light emitting auxiliary base 40 through the inclined surface on which the reflective surface 42 is not formed, and the light is transmitted through the light transmitting surface 41. Can be diffused with the light.
  • the structure of the reflective surface 42 located on the bottom surface of the surface light emitting auxiliary base 40 is changed to reflect some of the light of the LED 10 at the position of the reflective surface 42, and the reflective surface 42 In this non-located portion, part of the light of the LED 10 may be transmitted and then diffused to adjust the reflection and the transmission ratio of the light.
  • the partially formed reflective surface 42 may be equally applicable to the embodiments described later.
  • FIG. 3 is a configuration diagram of a second embodiment of the LED lighting apparatus of the present invention.
  • a first diffusion pattern provided in the reflective groove 43 to facilitate diffusion of the diffusion portion 44 in the structure of the first embodiment. 45 and a second diffusion pattern 46 provided in the diffusion portion 44.
  • the first diffusion pattern 45 and the second diffusion pattern 46 are to alternately position the medium of the light, so that the more uniform diffusion can occur by the difference in refractive index between the medium.
  • first diffusion pattern 45 and the second diffusion pattern 46 is provided with a plurality of concentric grooves as an example, a structure in which different media can be alternately positioned according to a path of light travel is illustrated. Anything can be used.
  • the structure of the first diffusion pattern 45 and the second diffusion pattern 46 as described above can increase the illuminance at the corresponding position as compared with the planar shape, and the amount of light transmitted through the light transmitting surface 41 is increased. It can be configured in consideration of the ratio.
  • FIG. 4 is a configuration diagram according to a third embodiment of the present invention the LED lighting device.
  • the third embodiment of the LED lighting apparatus of the present invention has a structure in which a light transmission path 33 penetrates to the accommodation groove 31 and the upper groove 32 in the configuration of the second embodiment.
  • This structure is a structure that can transmit a portion of the light generated by the LED 10 through the light transmission surface 41 at a more accurate ratio, the same medium as air that is the internal medium of the receiving groove 31 is The light transmitting surface 41 reaches, and the light emitted from the central portion of the LED 10 is transmitted through the light transmitting surface 41 as it is.
  • the structure in which only the light transmission path 33 is added to the first embodiment can also perform the same function. .
  • the light transmission path 33 further includes reaching the diffuse surface 44 exposed between the reflective surfaces 42. Can be formed.
  • FIG. 5 is a cross-sectional view according to a fourth embodiment of the LED lighting apparatus of the present invention.
  • the fourth embodiment of the LED lighting apparatus of the present invention includes a diffusion groove 34 filled with air in the light guide plate 30, and the location of the diffusion groove 34 is the surface light emitting auxiliary material. It may be a peripheral portion of the bottom side of the (40).
  • the surface light emitting auxiliary base 40 is in a state where only a part of the center is supported by the light guide plate 30.
  • the diffusion groove 34 is filled with air or a medium having a refractive index different from that of the conduit plate 30, and a part of the light generated from the LED 10 is transmitted through the light transmitting surface 41, Some of the remaining light is reflected by the reflecting surface 42, and the remaining light is refracted by the difference in refractive index of the air in the light guide plate 30 and the diffusion groove 34 to diffuse in various directions.
  • the fourth embodiment of the LED lighting apparatus of the present invention forms a diffusion groove 34 filled with a medium having a refractive index different from that of the light guide plate 30 in a predetermined region under the surface light emitting auxiliary substrate 40.
  • the light emitted to the outside through the light guide plate 30 may be emitted with uniform illuminance through refraction and reflection of light passing through the formed diffusion groove 34. That is, the LED lighting apparatus according to the present invention can prevent the phenomenon that light is agglomerated so that only a specific area becomes bright in a spot form or some areas become dark.
  • some light passes through the light transmission surface 41 and is emitted outside the light guide plate 30.
  • some light is first reflected by the diffusion groove, secondly by the second diffusion pattern, and thirdly by the reflection surface 42 to pass through the second diffusion pattern 46 to externally the light guide plate 30. Is released.
  • some light is first reflected by the reflective surface 42, secondly reflected by the air layer 34, and thirdly reflected by the substrate 20 to be emitted outside the light guide plate 30.
  • some light is first reflected by the reflective surface 42 and secondly reflected by the substrate 20 to be emitted outside the light guide plate 30.
  • the light emitted to the outside of the light guide plate 30 has a uniform illuminance.
  • the first diffusion pattern 45 and the second diffusion pattern 46 are formed on the surface of the light guide plate 30, and the formed first diffusion pattern 45 is formed.
  • the light guide plate 30 using diffusion and reflection of light through the diffusion groove 34 located in at least one region of the light guide plate 30 as well as diffusion using at least one of the incident angle and the reflection angle of the light by the second diffusion pattern 46. It is possible to achieve uniform diffusion and surface luminescence in front of).
  • the first diffusion pattern 45 is illustrated in an enlarged view, and a protruding surface is formed outside the groove as shown. The protruding surface is used to transmit light.
  • the diffusion groove 34 when the diffusion groove 34 is filled with a portion of the light of the LED 10 and the light reflected from the reflective surface 42 with a medium having a refractive index smaller than the refractive index of the light guide plate 30, As described above, the light guide plate 30 may be refracted in a direction substantially parallel to the upper surface of the light guide plate 30, and thus, other media as well as air described above may be used.
  • diffusion groove 34 is illustrated and described as being added to the configuration of the third embodiment in FIG. 5, it may be applied in addition to the first or second embodiment.
  • FIG. 6 is a cross-sectional view of a fifth embodiment of the LED lighting apparatus of the present invention.
  • the LED lighting apparatus includes an LED 10 positioned on an upper portion of the substrate 20, and an accommodating groove 31 accommodating the LED 10.
  • the structure of the surface light emitting auxiliary base 40 will be described.
  • the surface light emitting auxiliary base 40 provides a V-shaped reflective surface 47 with a predetermined area at a central upper side of the LED 10, and has a light transmitting hole 48 for transmitting a part of light. .
  • the central part of the light of the LED is reflected inclined downwardly to the outside through the reflecting surface 47, and the peripheral part is transmitted upwardly inclined through the light transmission hole, and the transmitted light is transmitted through the upper groove. Reflected and diffused at the side of (32) so that uniform illuminance is realized.
  • the fifth embodiment of the LED lighting apparatus of the present invention reflects 80 to 90% of the light of the LED 10 and transmits the light directly to the upper side without reflecting 10 to 20%. It is to make the surface light emission of uniform illumination as a whole.
  • the light divergence angle of the LED 10 is usually 120 degrees, and among the light emitted from the LED 10 according to the distance between the LED 10 and the reflective surface 47. It is a structure for transmitting the light located in the periphery to the upper side, the transmitted light is reflected through a medium having a different refractive index to prevent the illumination of the upper side of the LED 10 becomes darker according to the reflection of the light.
  • the LED lighting apparatus when the LED lighting apparatus according to the present invention applies the reflector to the upper part of the LED 10 in consideration of the lightness of the upper side of the LED 10 being brighter, rather, the upper side illuminance of the LED 10 In view of the fact that it may be darker, a part of the reflecting plate may be transmitted to the upper side of the LED 10, and then the transmitted light may be dispersed, thereby achieving surface illumination with a uniform illumination as a whole.
  • the present invention is a structure capable of surface emission of uniform illuminance on the entire surface of the LED, it can be used in industrial fields such as lighting, display using the LED.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The present invention relates to an LED lighting apparatus, and to a surface emitting method for the LED lighting apparatus. The LED lighting apparatus of the present invention comprises: LEDs arranged on a substrate; a light guide plate having a bottom surface with grooves for accommodating the LEDs; an upper groove formed at a portion of the light guide plate; and a surface emission assisting member arranged in the upper groove to transmit a portion of the light emitted by the LEDs upward and to diffuse the transmitted light, and to reflect the rest of the light to the substrate. In addition, the surface emitting method for the LED lighting apparatus according to the present invention comprises the steps of: reflecting a portion of light emitted by the LEDs to the lower surface of the light guide plate, and transmitting an amount of light smaller than that of the reflected light; and diffusing the transmitted light over the LEDs to compensate for the difference in the illumination above the LEDs and in the illumination at the periphery of the LEDs caused by the reflection of light emitted by the LEDs. The thus-configured apparatus of the present invention transmits a portion of the light emitted by the LEDs to the center of reflection means for reflecting light emitted by the LEDs, and diffuses a portion of the transmitted light above the LEDs, to thereby achieve a surface emission with a uniform illumination intensity.

Description

엘이디 조명장치 및 엘이디 조명장치의 면발광 방법LED lighting device and surface emitting method of LED lighting device

본 발명은 엘이디 조명장치 및 엘이디 조명장치의 면발광 방법에 관한 것으로, 보다 상세하게는 균일한 면발광이 가능한 엘이디 조명장치 및 엘이디 조명장치의 면발광 방법에 관한 것이다.The present invention relates to an LED lighting device and a surface light emitting method of the LED lighting device, and more particularly to a surface lighting method of the LED lighting device and the LED lighting device capable of uniform surface light emitting.

일반적으로 엘이디를 이용한 조명장치는 면발광의 균일도를 일정하게 하는 것이 성능의 평가에 중요한 요소가 된다. 즉 일반적인 엘이디 조명장치는 엘이디들의 광을 도광판 내에서 균일하게 확산시켜 최종적으로 전체의 면에서 일정한 광량이 발산될 수 있도록 연구하고 있다.In general, in LED lighting apparatus, it is important to evaluate the uniformity of surface emission. That is, the general LED lighting apparatus is researching that the light of the LEDs can be uniformly diffused in the light guide plate so that a constant amount of light can be emitted from the entire surface.

그러나 엘이디 조명장치는 대부분 그 엘이디가 위치하는 부분이 더 밝은 특성을 나타낸다.However, the LED lighting device is mostly brighter than the LED is located.

이와 같이 엘이디의 광에 의한 밝기의 차이를 보상하기 위하여 그 엘이디의 상부측에 광을 반사시키는 수단을 두는 구조가 연구되고 있으나, 이와 같이 엘이디의 광을 반사시키는 경우, 오히려 엘이디의 상부측의 밝기가 주변에 비하여 더 어두운 상태가 될 수 있어 균일한 면발광을 이루기가 용이하지 않은 문제점이 있었다.In order to compensate for the difference in brightness caused by the light of the LED as described above, a structure for reflecting light on the upper side of the LED has been studied, but in the case of reflecting the light of the LED in this way, the brightness of the upper side of the LED is rather There is a problem that can be darker than the surroundings to achieve a uniform surface emission.

상기와 같은 문제점을 감안한 본 발명이 해결하고자 하는 과제는, 엘이디의 상부측과 주변부의 조도를 균일하게 할 수 있는 엘이디 조명장치 및 엘이디 조명장치의 면발광 방법을 제공하는데 있다.The problem to be solved by the present invention in view of the above problems is to provide an LED lighting device and a surface light emitting method of the LED lighting device that can make the roughness of the upper side and the peripheral portion of the LED uniform.

또한 본 발명이 해결하고자 하는 다른 과제는, 엘이디가 실장되는 기판의 형상 또는 그 기판 상의 반사판의 구조를 변경하지 않고, 도광판의 형상만을 변경하여 균일한 면 발광이 이루어질 수 있는 엘이디 조명장치 및 엘이디 조명장치의 면발광 방법을 제공하는데 있다.In addition, another problem to be solved by the present invention, LED lighting device and LED lighting that can be made uniform surface emission by changing the shape of the light guide plate without changing the shape of the substrate on which the LED is mounted or the structure of the reflecting plate on the substrate The present invention provides a method for surface emitting light of a device.

상기와 같은 과제를 해결하기 위한 본 발명 엘이디 조명장치는, 기판에 실장된 엘이디와, 상기 엘이디를 수용하는 수용홈을 저면에 가지는 도광판과, 상기 도광판의 일부에 마련된 상부홈과, 상기 상부홈에 마련되어 상기 엘이디로부터 발원된 광의 일부를 상부측으로 투과시킨 후 그 투과된 광을 확산시키고, 나머지 광은 상기 기판 측으로 반사시키는 면발광보조기재를 포함한다.LED lighting apparatus of the present invention for solving the above problems, the light guide plate having an LED mounted on the substrate, the receiving groove for accommodating the LED on the bottom, an upper groove provided in a part of the light guide plate, and the upper groove And a surface light emitting auxiliary material that transmits a part of the light emitted from the LED to the upper side, diffuses the transmitted light, and reflects the remaining light to the substrate side.

또한 상기와 같은 과제를 해결하기 위한 본 발명 엘이디 조명장치의 면발광 방법은, 엘이디의 광의 일부를 도광판의 하부측으로 반사시킴과 아울러 그 반사되는 광에 비하여 더 적은 광이 반사되지 않도록 투과시키는 단계와, 상기 투과된 광을 상기 엘이디의 상부측에서 확산시켜, 상기 엘이디의 광의 반사에 따라 엘이디 상부의 조도와 주변부의 조도 차이를 보상하는 단계를 포함한다.In addition, the surface light-emitting method of the LED lighting apparatus of the present invention for solving the above problems, the step of reflecting a part of the light of the LED to the lower side of the light guide plate and transmitting so that less light is reflected than the reflected light and And diffusing the transmitted light from the upper side of the LED, thereby compensating for the difference in illuminance of the upper part of the LED and the illuminance of the peripheral part according to the reflection of the light of the LED.

본 발명은 엘이디의 상부측 도광판 내에서 그 엘이디의 광을 반사시키는 반사수단을 포함하되, 그 반사수단의 중앙부에 광의 일부를 투과시키도록 하여, 그 투과된 광의 일부가 엘이디의 상부측에서 확산되도록 함으로써, 엘이디의 상부측 및 그 주변부가 균일한 면발광이 이루어지는 효과가 있다.The present invention includes reflecting means for reflecting the light of the LED in the light guide plate of the upper side of the LED, to transmit a portion of the light in the center of the reflecting means, so that a portion of the transmitted light is diffused on the upper side of the LED As a result, there is an effect that uniform surface light emission of the upper side and the peripheral portion of the LED is achieved.

또한 본 발명은 다른 부분의 구조는 일반적인 형태로 구현하고, 도광판의 구조만을 변경하여 엘이디의 상부측과 그 주변부가 균일한 면발광을 할 수 있기 때문에 제조가 용이하고 제조비용을 절감할 수 있는 효과가 있다.In addition, the present invention implements the structure of the other parts in a general form, and by changing only the structure of the light guide plate can be uniform surface light emission of the upper side and the periphery of the LED is easy to manufacture and reduce the manufacturing cost There is.

도 1은 본 발명 엘이디 조명장치의 제1실시예의 단면 사시도이다.1 is a cross-sectional perspective view of a first embodiment of the LED lighting apparatus of the present invention.

도 2는 도 1에서 반사면의 다른 실시예를 보인 단면도이다.FIG. 2 is a cross-sectional view of another embodiment of the reflective surface of FIG. 1. FIG.

도 3은 본 발명 엘이디 조명장치의 제2실시예의 단면 사시도이다.3 is a cross-sectional perspective view of a second embodiment of the LED lighting apparatus of the present invention.

도 4는 본 발명 엘이디 조명장치의 제3실시예의 단면 사시도이다.4 is a cross-sectional perspective view of a third embodiment of the LED lighting apparatus of the present invention.

도 5는 본 발명 엘이디 조명장치의 제4실시예의 단면도이다.5 is a cross-sectional view of a fourth embodiment of the LED lighting apparatus of the present invention.

도 6은 본 발명 엘이디 조명장치의 제5실시예의 단면도이다.6 is a sectional view of a fifth embodiment of the LED lighting apparatus of the present invention.

이하, 상기와 같이 구성되는 본 발명의 다양한 실시예들을 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, various embodiments of the present invention configured as described above will be described in detail with reference to the accompanying drawings.

도 1은 본 발명 엘이디 조명장치 제1실시예의 단면 구성을 보인 사시도이다.1 is a perspective view showing a cross-sectional configuration of the first embodiment of the LED lighting apparatus of the present invention.

도 1을 참조하면 본 발명 엘이디 조명장치 제1실시예는, 엘이디(10)가 실장된 기판(20)과, 상기 기판(20)의 상부에 위치하며, 저면의 일부에 상기 엘이디(10)가 수용될 수 있는 수용홈(31)이 마련되어 있고, 상기 수용홈(31)의 상부측에 마련된 상부홈(32)을 포함하는 도광판(30)과, 상기 도광판(30)의 상부홈(32)에 위치하여 상기 엘이디의 광 일부를 내측으로 유도하여 주변과 균일한 조도가 되도록 확산시킴과 아울러 반사각에 따라 반사된 광을 투과시키는 면발광보조기재(40)를 포함한다.Referring to FIG. 1, in the first embodiment of the LED lighting apparatus of the present invention, the LED 20 is mounted on the substrate 20 and the upper portion of the substrate 20, and the LED 10 is disposed on a portion of a bottom surface thereof. An accommodation groove 31 that can be accommodated is provided and includes a light guide plate 30 including an upper groove 32 provided on an upper side of the accommodation groove 31, and an upper groove 32 of the light guide plate 30. It is positioned to guide a part of the light of the LED to the inside and diffused so as to have a uniform illuminance with the periphery, and includes a surface light emitting auxiliary base 40 for transmitting the reflected light according to the reflection angle.

상기 면발광보조기재(40)는, 상기 상부홈(32)에 치합되는 저면 중앙부에 평탄하게 마련되어 상기 엘이디(10)의 광 일부를 투과시키는 광투과면(41)과, 상기 광투과면(41)의 주변부 경사면에 마련되어 상기 엘이디(10)의 광의 일부를 반사시키는 반사면(42)과, 상기 광투과면(41)의 상부 면에 홈의 형태로 마련되어 상기 광투과면(41)을 통해 투과된 광을 반사 및 투과시키는 반사홈(43)과, 상기 반사홈(43)을 통해 반사된 광을 균일하게 확산시키는 확산부(44)를 포함한다.The surface light emitting auxiliary material 40 is provided at a central portion of the bottom surface which is engaged with the upper groove 32, and a light transmitting surface 41 for transmitting a part of light of the LED 10, and the light transmitting surface 41. It is provided on the inclined surface of the periphery and reflecting part of the light of the LED 10 reflects a portion 42, and provided in the form of a groove on the upper surface of the light transmission surface 41 is transmitted through the light transmission surface 41 And a reflecting groove 43 for reflecting and transmitting the light, and a diffuser 44 for uniformly diffusing the light reflected through the reflecting groove 43.

이하, 상기와 같이 구성되는 본 발명 엘이디 조명장치 제1실시예의 구성과 작용을 보다 상세히 설명한다.Hereinafter, the configuration and operation of the first embodiment of the LED lighting apparatus of the present invention configured as described above will be described in more detail.

먼저, 기판(20)은 반사층이 표면에 형성되어 있는 것이 바람직하며, 그 기판(20)의 상부에는 엘이디(10)가 다수로 실장되어 있다. 상기 엘이디(10)는 하나 또는 다수의 엘이디 베어칩이 패키징된 것이거나 하나 또는 다수의 엘이디 베어칩 일 수 있다.First, it is preferable that the reflective layer is formed on the surface of the substrate 20, and a plurality of LEDs 10 are mounted on the substrate 20. The LED 10 may be packaged with one or more LED bare chips or one or more LED bare chips.

상기 기판(20)의 상부에는 엘이디(10)에서 방출되는 광을 확산시켜 면발광이 가능하도록 하는 도광판(30)이 부착된다. 이때 기판(20)보다 높게 위치하는 엘이디(10)를 수용하기 위하여 그 도광판(30)에는 수용홈(31)이 마련되어 있다.The light guide plate 30 is attached to the upper portion of the substrate 20 to diffuse the light emitted from the LED 10 to enable surface emission. At this time, in order to accommodate the LED 10 positioned higher than the substrate 20, the light guide plate 30 is provided with a receiving groove 31.

상기 수용홈(31)과 엘이디(10)의 사이에는 공기층이 충진될 수 있는 것이며, 그 엘이디(10)가 베어칩인 경우에는 상기 도광판(30)의 굴절률과는 다른 굴절률을 가지는 봉지재가 충진될 수 있다. 이와 같이 수용홈(31)에 충진된 공기 또는 봉지재인 매질은 상기 도광판(30)과의 굴절률의 차이에 의하여 광의 확산을 더욱 심화시킬 수 있다.An air layer may be filled between the accommodating groove 31 and the LED 10, and when the LED 10 is a bare chip, an encapsulant having a refractive index different from that of the light guide plate 30 may be filled. Can be. As such, the medium filled with the air or the encapsulant filled in the accommodating groove 31 may further intensify the light diffusion due to the difference in refractive index with the light guide plate 30.

그 다음, 상기 도광판(30)의 상면에는 상기 수용홈(31)과 대응하는 위치에 상부홈(32)이 마련되어 있다. 상기 상부홈(32)의 형상은 중앙부는 평탄한 면이며, 그 주변부는 주변으로 갈수록 홈의 깊이가 얕아지도록 경사면이 형성되어 있다.Next, an upper groove 32 is provided on a top surface of the light guide plate 30 at a position corresponding to the receiving groove 31. The shape of the upper groove 32 is a flat surface in the center portion, the inclined surface is formed so that the depth of the groove becomes shallower toward the peripheral portion.

상기 도광판(30)의 상부홈(32)에는 면발광보조기재(40)가 결합된다. 상기 면발광보조기재(40)의 저면 형상은 상기 상부홈(32)에 치합될 수 있는 구조이며, 그 저면의 경사면은 경면처리된 면 또는 반사층이 코팅된 면인 반사면(42)이 형성되어 있으며, 상기 상부홈(32)의 중앙에는 평탄한 면인 광투과면(41)이 마련되어 있다.The surface light emitting auxiliary material 40 is coupled to the upper groove 32 of the light guide plate 30. The bottom shape of the surface light emitting auxiliary base 40 is a structure that can be engaged with the upper groove 32, the inclined surface of the bottom is a reflective surface 42 which is a mirror-treated surface or a surface coated with a reflective layer is formed In the center of the upper groove 32 is provided a light transmitting surface 41 which is a flat surface.

상기 광투과면(41)은 엘이디(10)로부터 발원된 광을 상기 상부홈(32)내로 투과시키는 용도로 사용된다.The light transmitting surface 41 is used to transmit the light emitted from the LED 10 into the upper groove 32.

이와 같은 구조에서 상기 엘이디(10)로부터 발원된 광은 상기 반사면(42)에서 80 내지 90%가 반사되며, 그 광투과면(41)을 통해 10 내지 20%가 투과된다. 물론, 상기 수치는 일 예일 뿐 다양한 수치가 될 수 있다.In this structure, 80 to 90% of the light emitted from the LED 10 is reflected on the reflective surface 42, and 10 to 20% is transmitted through the light transmitting surface 41. Of course, the numerical values are merely examples and may be various numerical values.

그 다음, 상기 광투과면(41)을 통해 투과된 광이 직접 도광판(30)의 상부측을 통해 투과되면 주변보다 밝은 점이 생기게 되며, 이를 방지하기 위하여 광을 다시 확산시킬 필요가 있다.Then, when the light transmitted through the light transmitting surface 41 is directly transmitted through the upper side of the light guide plate 30, there is a bright spot than the surroundings, it is necessary to diffuse the light again to prevent this.

이를 위하여 상기 광투과면(41)에 대응하는 면발광보조기재(40)의 상부면에는 투과된 광의 반사를 위한 수단이 마련되며, 그 수단은 홈의 형태인 반사홈(43)이며, 그 반사홈(43)의 면과 그 상부의 공기의 굴절률차이와 그 계면의 경사각도에 의해 광이 외부로 투과되는 것을 일부 방지한다. 여기서는 상기 반사홈(43)의 형태로 원뿔형태를 도시하였지만, 본 발명은 상기 홈의 형태로 원뿔 형태로 한정되지 않으며, 다양한 형태로 구현할 수 있다.To this end, the upper surface of the surface light emitting auxiliary material 40 corresponding to the light transmitting surface 41 is provided with a means for reflecting the transmitted light, the means is a reflective groove 43 in the form of a groove, the reflection The light is partially prevented from being transmitted to the outside due to the difference in refractive index between the surface of the groove 43 and the air thereon and the inclination angle of the interface thereof. Here, although the cone shape in the form of the reflective groove 43 is shown, the present invention is not limited to the cone shape in the form of the groove, it can be implemented in various forms.

이와 같이 반사홈(43)에서 반사된 광은 면발광보조기재(40)의 저면 경사면에 위치하는 반사면(42)에서 다시 반사되고, 확산부(44)에서 확산이 일어나 그 면발광보조기재(40)의 표면에서 균일한 면발광이 가능하게 된다.As such, the light reflected from the reflecting groove 43 is reflected back from the reflecting surface 42 located on the bottom inclined surface of the surface light emitting auxiliary material 40, and the diffusion is generated in the diffusion part 44 so that the surface light emitting auxiliary material ( Uniform surface luminescence is possible on the surface of 40).

상기 엘이디(10)의 광중 광투과면(41)을 통해 투과되지 못한 80 내지 90%의 광은 반사면(42)에 의해 반사되며, 그 반사된 광은 기판(20) 또는 기판(20)에 마련된 반사층에 의해 반사가 이루어지며, 도광판(30)의 전면에서 고른 조도로 면발광된다. 80 to 90% of the light that is not transmitted through the light transmissive surface 41 of the LED 10 is reflected by the reflecting surface 42, and the reflected light is reflected on the substrate 20 or the substrate 20. The reflection is made by the provided reflection layer, and the surface of the light guide plate 30 is uniformly emitted.

이와 같이 본 발명 엘이디 조명장치의 제1실시예는 엘이디(10)의 광일부를 이용하여 엘이디(10)의 상부면과 그 상부면 이외의 주변부의 조도에 차이가 발생하는 것을 방지할 수 있어 보다 용이하게 균일한 면발광이 가능하게 된다.As described above, according to the first exemplary embodiment of the LED lighting apparatus of the present invention, a difference may be prevented from occurring in the roughness of the upper surface of the LED 10 and the peripheral portions other than the upper surface thereof by using a light portion of the LED 10. Uniform surface light emission can be easily performed.

도 2는 상기 반사면(42)의 다른 실시예의 구성도이다.2 is a configuration diagram of another embodiment of the reflective surface 42.

도 2를 참조하면 상기 제1실시예의 반사면(42)은 면발광보조기재(40)의 경사진 저면의 전체에 형성되어 있으나, 그 경사진 저면의 일부에 형성되어 있을 수 있다.Referring to FIG. 2, the reflective surface 42 of the first embodiment is formed on the entire inclined bottom of the surface light emitting auxiliary base 40, but may be formed on a portion of the inclined bottom.

이때에는 광이 반사면(42)이 형성되지 않은 경사면을 통해 면발광보조기재(40)의 확산부(44)에 유입될 수 있으며, 유입된 광은 상기 광투과면(41)을 통해 투과된 광과 함께 확산될 수 있다.In this case, the light may be introduced into the diffuser 44 of the surface light emitting auxiliary base 40 through the inclined surface on which the reflective surface 42 is not formed, and the light is transmitted through the light transmitting surface 41. Can be diffused with the light.

이와 같이 면발광보조기재(40)의 저면에 위치하는 반사면(42)의 구조를 변경하여 반사면(42)의 위치에서는 엘이디(10)의 광 중 일부를 반사시키고, 그 반사면(42)이 위치하지 않는 부분에서는 엘이디(10)의 광 중 일부를 투과 시킨 후 확산시켜, 광의 반사와 투과비율을 조정할 수 있다.In this way, the structure of the reflective surface 42 located on the bottom surface of the surface light emitting auxiliary base 40 is changed to reflect some of the light of the LED 10 at the position of the reflective surface 42, and the reflective surface 42 In this non-located portion, part of the light of the LED 10 may be transmitted and then diffused to adjust the reflection and the transmission ratio of the light.

상기 부분적으로 형성되는 반사면(42)은 이후에 설명하는 실시예들에도 동일하게 적용할 수 있다.The partially formed reflective surface 42 may be equally applicable to the embodiments described later.

도 3은 본 발명 엘이디 조명장치의 제2실시예의 구성도이다.3 is a configuration diagram of a second embodiment of the LED lighting apparatus of the present invention.

도 3을 참조하면 본 발명 엘이디 조명장치의 제2실시예는, 상기 제1실시예의 구조에서 상기 확산부(44)의 확산을 보다 용이하도록 하기 위하여 상기 반사홈(43)에 마련된 제1확산패턴(45)과, 상기 확산부(44)에 마련된 제2확산패턴(46)을 더 포함할 수 있다.Referring to FIG. 3, in the second embodiment of the LED lighting apparatus of the present invention, a first diffusion pattern provided in the reflective groove 43 to facilitate diffusion of the diffusion portion 44 in the structure of the first embodiment. 45 and a second diffusion pattern 46 provided in the diffusion portion 44.

상기 제1확산패턴(45)과 제2확산패턴(46)은 광의 매질을 교번하여 위치하도록 하여, 그 매질간의 굴절률 차이에 의하여 보다 균일한 확산이 일어날 수 있도록 하는 것이다.The first diffusion pattern 45 and the second diffusion pattern 46 are to alternately position the medium of the light, so that the more uniform diffusion can occur by the difference in refractive index between the medium.

도면에서는 그 제1확산패턴(45)과 제2확산패턴(46)의 형상을 다수의 동심원 형태의 홈이 마련된 것을 예로 들었으나, 광의 진행경로에 따라 서로 다른 매질을 교번하여 위치시킬 수 있는 구조이면 무엇이든 사용이 가능하다.In the drawing, although the shape of the first diffusion pattern 45 and the second diffusion pattern 46 is provided with a plurality of concentric grooves as an example, a structure in which different media can be alternately positioned according to a path of light travel is illustrated. Anything can be used.

또한, 상기와 같은 제1확산패턴(45)과 제2확산패턴(46)의 구조는 해당 위치에서의 조도를 평면형태에 비하여 보다 높일 수 있는 것으로, 상기 광투과면(41)을 투과되는 광량비를 고려하여 구성할 수 있다.In addition, the structure of the first diffusion pattern 45 and the second diffusion pattern 46 as described above can increase the illuminance at the corresponding position as compared with the planar shape, and the amount of light transmitted through the light transmitting surface 41 is increased. It can be configured in consideration of the ratio.

도 4는 본 발명 엘이디 조명장치의 제3실시예에 따른 구성도이다.4 is a configuration diagram according to a third embodiment of the present invention the LED lighting device.

도 4를 참조하면 본 발명 엘이디 조명장치의 제3실시예는, 상기 제2실시예의 구성에서 상기 수용홈(31)과 상부홈(32)까지 관통되는 광투과경로(33)를 마련한 구조이다.Referring to FIG. 4, the third embodiment of the LED lighting apparatus of the present invention has a structure in which a light transmission path 33 penetrates to the accommodation groove 31 and the upper groove 32 in the configuration of the second embodiment.

이와 같은 구조는 상기 엘이디(10)에서 발생된 광의 일부를 보다 정확한 비율로 상기 광투과면(41)을 통해 투과시킬 수 있는 구조로서, 상기 수용홈(31)의 내부 매질인 공기와 동일한 매질이 상기 광투과면(41)까지 이르도록 하여, 그 엘이디(10)의 중앙부에서 발산되는 광을 그대로 광투과면(41)을 통해 투과시키는 구조를 갖는다.This structure is a structure that can transmit a portion of the light generated by the LED 10 through the light transmission surface 41 at a more accurate ratio, the same medium as air that is the internal medium of the receiving groove 31 is The light transmitting surface 41 reaches, and the light emitted from the central portion of the LED 10 is transmitted through the light transmitting surface 41 as it is.

상기 제3실시예의 광투과경로(33)를 상기 제2실시예에 부가되는 도면으로 도시하여 설명하였으나, 상기 제1실시예에 광투과경로(33)만을 부가한 구조도 동일한 작용을 할 수 있다.Although the light transmission path 33 of the third embodiment is illustrated and described in the drawings added to the second embodiment, the structure in which only the light transmission path 33 is added to the first embodiment can also perform the same function. .

또한 상기 도 2에서와 같이 반사면(42)을 일부에만 형성한 경우, 그 광투과경로(33)는 그 반사면(42) 사이에 노출된 확산면(44)에 이르는 것을 더 포함하여 다수로 형성할 수 있다.In addition, in the case where the reflective surface 42 is formed only in a part as shown in FIG. 2, the light transmission path 33 further includes reaching the diffuse surface 44 exposed between the reflective surfaces 42. Can be formed.

도 5는 본 발명 엘이디 조명장치의 제4실시예에 따른 단면 구성도이다.5 is a cross-sectional view according to a fourth embodiment of the LED lighting apparatus of the present invention.

도 5를 참조하면 본 발명 엘이디 조명장치의 제4실시예는, 도광판(30)에 공기가 충진된 확산홈(34)을 형성한 것으로, 그 확산홈(34)의 위치는 상기 면발광보조기재(40)의 저면측의 주변부일 수 있다.Referring to FIG. 5, the fourth embodiment of the LED lighting apparatus of the present invention includes a diffusion groove 34 filled with air in the light guide plate 30, and the location of the diffusion groove 34 is the surface light emitting auxiliary material. It may be a peripheral portion of the bottom side of the (40).

즉, 상기 면발광보조기재(40)는 그 도광판(30)에 의해 중앙의 일부만이 지지되고 있는 상태가 된다.That is, the surface light emitting auxiliary base 40 is in a state where only a part of the center is supported by the light guide plate 30.

상기 확산홈(34)에는 공기 또는 상기 도관판(30)의 굴절률과는 다른 굴절률을 가지는 매질이 충진 되어 있으며, 엘이디(10)에서 발생한 광의 일부는 상기 광투과면(41)을 통해 투과되고, 나머지 광의 일부는 상기 반사면(42)에서 반사되고, 나머지 광은 상기 도광판(30)과 확산홈(34) 내의 공기의 굴절률 차이에 의하여 굴절되어 여러 방향으로 확산된다.The diffusion groove 34 is filled with air or a medium having a refractive index different from that of the conduit plate 30, and a part of the light generated from the LED 10 is transmitted through the light transmitting surface 41, Some of the remaining light is reflected by the reflecting surface 42, and the remaining light is refracted by the difference in refractive index of the air in the light guide plate 30 and the diffusion groove 34 to diffuse in various directions.

이와 같이 본 발명 엘이디 조명장치의 제4실시예는, 상기 면발광보조기재(40) 하부의 일정 영역에 그 도광판(30)과는 굴절률이 다른 매질이 충진된 확산홈(34)을 형성시키고, 상기 형성된 확산홈(34)을 통과한 광의 굴절 및 반사를 통해 상기 도광판(30)을 통해 외부로 방출되는 광이 균일한 조도로 방출될 수 있도록 한다. 즉, 본 발명에 따른 엘이디 조명장치는 광이 응집되어 특정 영역만이 스팟(spot) 형태로 밝아지거나 혹은 일부 영역이 어둡게 되는 현상을 방지할 수 있다.As described above, the fourth embodiment of the LED lighting apparatus of the present invention forms a diffusion groove 34 filled with a medium having a refractive index different from that of the light guide plate 30 in a predetermined region under the surface light emitting auxiliary substrate 40. The light emitted to the outside through the light guide plate 30 may be emitted with uniform illuminance through refraction and reflection of light passing through the formed diffusion groove 34. That is, the LED lighting apparatus according to the present invention can prevent the phenomenon that light is agglomerated so that only a specific area becomes bright in a spot form or some areas become dark.

도 5에 도시한 바와 같이, 일부 광은 광투과면(41)을 통과해 상기 도광판(30) 외부로 방출된다. 또한, 일부 광은 확산홈에 1차 반사되고 제2확산패턴에 의해 2차 반사되고 반사면(42)에 의해 3차 반사되어 상기 제2확산패턴(46)을 통과해 상기 도광판(30) 외부로 방출된다. 또한, 일부 광은 상기 반사면(42)에 의해 1차 반사되고 상기 공기층(34)에 의해 2차 반사되고 기판(20)에 의해 3차 반사되어 상기 도광판(30) 외부로 방출된다. 또한, 일부 광은 상기 반사면(42)에 의해 1차 반사되고 상기 기판(20)에 의해 2차 반사되어 상기 도광판(30) 외부로 방출된다. 상술한 바에 의해, 상기 도광판(30) 외부로 방출된 광은 균일한 조도를 이루게 된다.As shown in FIG. 5, some light passes through the light transmission surface 41 and is emitted outside the light guide plate 30. In addition, some light is first reflected by the diffusion groove, secondly by the second diffusion pattern, and thirdly by the reflection surface 42 to pass through the second diffusion pattern 46 to externally the light guide plate 30. Is released. In addition, some light is first reflected by the reflective surface 42, secondly reflected by the air layer 34, and thirdly reflected by the substrate 20 to be emitted outside the light guide plate 30. In addition, some light is first reflected by the reflective surface 42 and secondly reflected by the substrate 20 to be emitted outside the light guide plate 30. As described above, the light emitted to the outside of the light guide plate 30 has a uniform illuminance.

이와 같이 본 발명 엘이디 조명장치의 제4실시예는, 상기 도광판(30)의 표면에 제1확산패턴(45)과 제2확산패턴(46)을 형성시키고, 상기 형성된 제1확산패턴(45) 및 제2확산패턴(46)에 의한 광의 입사각 및 반사각 중 적어도 하나를 이용한 확산뿐만 아니라 도광판(30) 내의 적어도 하나의 영역에 위치한 확산홈(34)을 통한 광의 확산 및 반사를 이용하여 도광판(30)의 전면에 균일한 과의 확산과 면발광을 이룰 수 있게 된다. 상기 제1확산패턴(45)은 확대된 도면으로 도시되어 있으며, 도시된 바와 같이 홈 외부에 돌출면이 형성되어 있다. 상기 돌출면은 광을 투과시키는 용도로 사용된다.As described above, in the fourth exemplary embodiment of the LED lighting apparatus of the present invention, the first diffusion pattern 45 and the second diffusion pattern 46 are formed on the surface of the light guide plate 30, and the formed first diffusion pattern 45 is formed. And the light guide plate 30 using diffusion and reflection of light through the diffusion groove 34 located in at least one region of the light guide plate 30 as well as diffusion using at least one of the incident angle and the reflection angle of the light by the second diffusion pattern 46. It is possible to achieve uniform diffusion and surface luminescence in front of). The first diffusion pattern 45 is illustrated in an enlarged view, and a protruding surface is formed outside the groove as shown. The protruding surface is used to transmit light.

한편, 상기 확산홈(34)은 엘이디(10)의 광의 일부 및 상기 반사면(42)에서 반사된 광을 상기 도광판(30)의 굴절률보다는 더 작은 굴절률을 가지는 매질로 충진한 경우, 상기 설명과 같이 도광판(30)의 상면과 거의 평행한 방향으로 굴절될 수 있으며, 따라서 상기 설명한 공기뿐만 아니라 다른 매질을 사용할 수 있다.On the other hand, when the diffusion groove 34 is filled with a portion of the light of the LED 10 and the light reflected from the reflective surface 42 with a medium having a refractive index smaller than the refractive index of the light guide plate 30, As described above, the light guide plate 30 may be refracted in a direction substantially parallel to the upper surface of the light guide plate 30, and thus, other media as well as air described above may be used.

또한, 도 5에서는 확산홈(34)이 제3실시예의 구성에 추가된 것으로 도시하고 설명하였으나, 제1 또는 제2실시예에 부가하여 적용할 수 있다.In addition, although the diffusion groove 34 is illustrated and described as being added to the configuration of the third embodiment in FIG. 5, it may be applied in addition to the first or second embodiment.

이때에도 상기 확산홈(34)의 작용은 동일하다.At this time, the operation of the diffusion groove 34 is the same.

도 6은 본 발명 엘이디 조명장치 제5실시예의 단면 구성도이다.6 is a cross-sectional view of a fifth embodiment of the LED lighting apparatus of the present invention.

도 6을 참조하면 본 발명 엘이디 조명장치 제5실시예는, 기판(20)의 상부에 위치하는 엘이디(10)와, 상기 엘이디(10)를 수용하는 수용홈(31)이 마련되고 그 수용홈(31)의 상부측에 상부홈(32)을 가지며, 상기 기판(20)의 상부에 위치하는 도광판(30)과, 상기 도광판(30)의 상부홈(32)의 저면부에 위치하되, 상기 엘이디(10)의 광의 일부를 상부측으로 투과시키고, 그 상부홈(32)의 측면부에 구비된 반사면을 이용하여 광을 반사 및 확산시키는 면발광보조기재(40)를 포함하여 구성된다.Referring to FIG. 6, the LED lighting apparatus according to the fifth embodiment of the present invention includes an LED 10 positioned on an upper portion of the substrate 20, and an accommodating groove 31 accommodating the LED 10. An upper groove 32 on the upper side of the 31, the light guide plate 30 located on the upper portion of the substrate 20, the light guide plate 30, the lower surface of the upper groove 32 of the light guide plate 30, It comprises a surface light emitting auxiliary base 40 for transmitting a part of the light of the LED 10 to the upper side, and reflects and diffuses the light by using a reflecting surface provided on the side portion of the upper groove (32).

상기 면발광보조기재(40)의 구조에 대해 설명하기로 한다. 상기 면발광보조기재(40)는 상기 엘이디(10)의 중앙 상부측에서 소정의 면적으로 V자 형의 반사면(47)을 제공하며, 광 일부를 투과시키는 광투과공(48)이 마련되어 있다.The structure of the surface light emitting auxiliary base 40 will be described. The surface light emitting auxiliary base 40 provides a V-shaped reflective surface 47 with a predetermined area at a central upper side of the LED 10, and has a light transmitting hole 48 for transmitting a part of light. .

이와 같은 구성에서는 상기 엘이디의 광 중 중앙부의 광을 반사면(47)을 통해 외측으로 하향경사지게 반사시킴과 아울러 주변부의 광을 광투과공을 통해 상향경사지게 투과시키고, 그 투과된 광이 상기 상부홈(32)의 측면에서 반사 및 확산되도록 하여 균일한 조도가 실현되도록 한다.In such a configuration, the central part of the light of the LED is reflected inclined downwardly to the outside through the reflecting surface 47, and the peripheral part is transmitted upwardly inclined through the light transmission hole, and the transmitted light is transmitted through the upper groove. Reflected and diffused at the side of (32) so that uniform illuminance is realized.

이와 같이 본 발명 엘이디 조명장치 제5실시예는 상기 다른 실시예들과 같이 엘이디(10)의 광 중 80 내지 90%를 반사시키며, 10 내지 20%를 반사시키지 않고 상부측으로 직접 투과시킨 후 확산시켜 전체적으로 균일한 조도의 면발광을 할 수 있도록 하는 것이다.As described above, the fifth embodiment of the LED lighting apparatus of the present invention reflects 80 to 90% of the light of the LED 10 and transmits the light directly to the upper side without reflecting 10 to 20%. It is to make the surface light emission of uniform illumination as a whole.

단, 제1 내지 제4실시예와는 다르게 엘이디(10)의 광발산각도가 통상 120도이며, 그 엘이디(10)와 반사면(47)의 거리에 따라 엘이디(10)에서 발산되는 광 중 주변부에 위치하는 광을 상부측으로 투과시키는 구조이며, 그 투과된 광은 굴절률이 다른 매질을 통해 반사되어 상기 엘이디(10) 상부측의 조도가 광의 반사에 따라 더 어두워지는 것을 방지할 수 있게 된다.However, unlike the first to fourth embodiments, the light divergence angle of the LED 10 is usually 120 degrees, and among the light emitted from the LED 10 according to the distance between the LED 10 and the reflective surface 47. It is a structure for transmitting the light located in the periphery to the upper side, the transmitted light is reflected through a medium having a different refractive index to prevent the illumination of the upper side of the LED 10 becomes darker according to the reflection of the light.

이처럼 본 발명에 따른 엘이디 조명장치는 엘이디(10)의 상부측의 조도가 더 밝은 것을 고려하여 반사판을 그 엘이디(10)의 상부에 적용할 때, 오히려 엘이디(10)의 상부측 조도가 주변부에 비해 더 어두워질 수 있는 것을 감안하여, 그 반사판의 일부를 통해 엘이디(10) 광의 일부를 상부측으로 투과시킨 후, 그 투과된 광을 분산시킴으로써, 전체적으로 균일한 조도의 면발광을 이룰 수 있게 된다.As described above, when the LED lighting apparatus according to the present invention applies the reflector to the upper part of the LED 10 in consideration of the lightness of the upper side of the LED 10 being brighter, rather, the upper side illuminance of the LED 10 In view of the fact that it may be darker, a part of the reflecting plate may be transmitted to the upper side of the LED 10, and then the transmitted light may be dispersed, thereby achieving surface illumination with a uniform illumination as a whole.

본 발명은 엘이디의 전체면에서 균일한 조도의 면발광이 가능한 구조로서, 엘이디를 이용한 조명, 디스플레이 등의 산업분야에서 이용이 가능하다.The present invention is a structure capable of surface emission of uniform illuminance on the entire surface of the LED, it can be used in industrial fields such as lighting, display using the LED.

Claims (10)

기판에 실장된 엘이디;LED mounted on the substrate; 상기 엘이디를 수용하는 수용홈을 저면에 가지는 도광판;A light guide plate having a receiving groove at a bottom thereof to accommodate the LED; 상기 도광판의 일부에 마련된 상부홈; 및An upper groove provided in a portion of the light guide plate; And 상기 상부홈에 마련되어 상기 엘이디로부터 발원된 광의 일부를 상부측으로 투과시킨 후 그 투과된 광을 확산시키고, 나머지 광은 상기 기판 측으로 반사시키는 면발광보조기재를 포함하는 엘이디 조명장치.LED lighting device comprising a surface light emitting auxiliary material provided in the upper groove to transmit a portion of the light emitted from the LED to the upper side and diffuse the transmitted light, the remaining light is reflected to the substrate side. 제1항에 있어서,The method of claim 1, 상기 면발광보조기재는,The surface light-emitting auxiliary material, 상기 엘이디로부터 발원된 광 일부를 상부측으로 투과시키는 광투과면;A light transmission surface for transmitting a part of light emitted from the LED to an upper side; 상기 광투과면의 주변부에 경사지게 마련되어 상기 나머지 광을 반사시키는 반사면; 및A reflective surface inclined at a periphery of the light transmitting surface to reflect the remaining light; And 상기 광투과면의 상부측에 위치하여 상기 광투과면으로 투과된 상기 광을 상기 반사면 상부측으로 반사시키고, 입사각에 따라서 반사된 광을 투과시키는 반사홈을 포함하는 엘이디 조명장치.And a reflecting groove positioned on an upper side of the light transmitting surface to reflect the light transmitted through the light transmitting surface to an upper side of the reflecting surface and transmitting the reflected light according to an incident angle. 제2항에 있어서,The method of claim 2, 상기 반사홈과 상기 확산면의 상부에는,In the upper portion of the reflecting groove and the diffusion surface, 상기 반사된 광이 서로 다른 굴절률의 매질을 교번하여 통과하도록 마련된 제1확산패턴 및 제2확산패턴이 각각 마련된 것을 특징으로 하는 엘이디 조명장치.LED lighting apparatus, characterized in that the first diffusion pattern and the second diffusion pattern is provided so that the reflected light alternately passes through the medium of different refractive index. 제2항 또는 제3항에 있어서,The method according to claim 2 or 3, 상기 광투과면은 상기 수용홈과 광을 투과시킬 수 있는 광투과경로로 연결됨을 특징으로 하는 엘이디 조명장치.The light transmitting surface is LED lighting device, characterized in that connected to the light transmission path for transmitting the light and the receiving groove. 제4항에 있어서,The method of claim 4, wherein 상기 면발광보조기재의 주변부 하부측 상기 도광판에 마련되어, 상기 엘이디의 광 또는 상기 반사면에서 반사된 광을 상기 도광판에 확산시키는 확산홈을 더 포함하는 엘이디 조명장치.And a diffused groove provided in the light guide plate at a lower side of the peripheral portion of the surface light emitting auxiliary material, and diffusing the light of the LED or the light reflected from the reflective surface to the light guide plate. 제2항 또는 제3항에 있어서,The method according to claim 2 or 3, 상기 면발광보조기재의 주변부 하부측 상기 도광판에 마련되어, 상기 엘이디의 광 또는 상기 반사면에서 반사된 광을 상기 도광판에 확산시키는 확산홈을 더 포함하는 엘이디 조명장치.And a diffused groove provided in the light guide plate at a lower side of the peripheral portion of the surface light emitting auxiliary material, and diffusing the light of the LED or the light reflected from the reflective surface to the light guide plate. 제1항에 있어서,The method of claim 1, 상기 면발광보조기재는,The surface light-emitting auxiliary material, 상기 엘이디의 광 중 중앙부의 광을 외측으로 경사지게 반사시킴과 아울러 나머지 광을 경사지게 투과시키고, 상기 투과된 광이 상기 상부홈의 측면에서 반사 및 확산되도록 하는 것을 특징으로 하는 엘이디 조명장치.LED lighting device characterized in that to reflect the light of the central portion of the LED inclined outwardly and to transmit the remaining light inclined, the transmitted light is reflected and diffused on the side of the upper groove. 제2항에 있어서,The method of claim 2, 상기 면발광보조기재는,The surface light emitting auxiliary material, 상기 저면 중앙부에 V형의 반사면을 제공하는 반사면; 및A reflection surface providing a V-shaped reflection surface to a central portion of the bottom surface; And 상기 반사면의 주변부에서 상기 엘이디의 광 일부를 상기 상부홈의 측면부로 투과시키는 광투과공을 포함하는 엘이디 조명장치.LED lighting device including a light transmission hole for transmitting a part of the light of the LED to the side of the upper groove in the peripheral portion of the reflective surface. 엘이디의 광의 일부를 도광판의 하부측으로 반사시킴과 아울러 그 반사되는 광에 비하여 더 적은 광이 반사되지 않도록 투과시키는 단계; 및Reflecting a part of the light of the LED to the lower side of the light guide plate and transmitting the light so that less light is not reflected compared to the reflected light; And 상기 투과된 광을 상기 엘이디의 상부측에서 확산시켜, 상기 엘이디의 광의 반사에 따라 엘이디 상부의 조도와 주변부의 조도 차이를 보상하는 단계를 포함하는 엘이디 조명장치의 면발광방법.And diffusing the transmitted light from the upper side of the LED, thereby compensating for the difference in the illumination of the upper part of the LED and the illuminance of the peripheral part according to the reflection of the light of the LED. 제9항에 있어서,The method of claim 9, 상기 반사되는 광과 투과되는 광의 비율은 80 내지 90:20 내지 10인 것을 특징으로 하는 엘이디 조명장치의 면발광방법.The ratio of the reflected light and the transmitted light is 80 to 90: 20 to 10, characterized in that the surface light emitting method of the LED lighting apparatus.
PCT/KR2010/002064 2009-04-10 2010-04-05 Led lighting apparatus, and surface emitting method for the led lighting apparatus WO2010117167A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2009-0031546 2009-04-10
KR1020090031546A KR20100112978A (en) 2009-04-10 2009-04-10 Led lighting apparatus and method for surface emitting of the led lighting apparatus

Publications (2)

Publication Number Publication Date
WO2010117167A2 true WO2010117167A2 (en) 2010-10-14
WO2010117167A3 WO2010117167A3 (en) 2011-02-17

Family

ID=42936690

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/002064 WO2010117167A2 (en) 2009-04-10 2010-04-05 Led lighting apparatus, and surface emitting method for the led lighting apparatus

Country Status (2)

Country Link
KR (1) KR20100112978A (en)
WO (1) WO2010117167A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101236786B1 (en) 2011-04-22 2013-02-25 더블유 케이 주식회사 Light emitting lamp

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11581460B2 (en) 2019-12-25 2023-02-14 Nichia Corporation Light emitting module and method for manufacturing light emitting module
JP7140987B2 (en) * 2019-12-25 2022-09-22 日亜化学工業株式会社 Light-emitting module and method for manufacturing light-emitting module

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100593933B1 (en) * 2005-03-18 2006-06-30 삼성전기주식회사 Side emitting type light emitting diode package having scattering region and backlight device comprising the same
KR200421544Y1 (en) * 2006-05-02 2006-07-13 김수민 Lighting equipment
KR100649640B1 (en) * 2005-02-03 2006-11-27 삼성전기주식회사 Side emission type led package
KR100691179B1 (en) * 2005-06-01 2007-03-09 삼성전기주식회사 Side emitting type LED package and manufacturing method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100649640B1 (en) * 2005-02-03 2006-11-27 삼성전기주식회사 Side emission type led package
KR100593933B1 (en) * 2005-03-18 2006-06-30 삼성전기주식회사 Side emitting type light emitting diode package having scattering region and backlight device comprising the same
KR100691179B1 (en) * 2005-06-01 2007-03-09 삼성전기주식회사 Side emitting type LED package and manufacturing method thereof
KR200421544Y1 (en) * 2006-05-02 2006-07-13 김수민 Lighting equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101236786B1 (en) 2011-04-22 2013-02-25 더블유 케이 주식회사 Light emitting lamp

Also Published As

Publication number Publication date
WO2010117167A3 (en) 2011-02-17
KR20100112978A (en) 2010-10-20

Similar Documents

Publication Publication Date Title
US7322721B2 (en) Side emitting device, backlight unit using the same as light source and liquid crystal display employing the backlight unit
WO2010058996A2 (en) Multiple chip led package
WO2013019025A2 (en) Lighting device and liquid crystal display using the same
WO2020158976A1 (en) Backlight unit and display device comprising same
WO2015009083A1 (en) Light diffusing lens and light emitting device having same
WO2011019252A2 (en) Illuminator
WO2012086896A1 (en) Back light unit and liquid crystal display using the same
WO2016190719A1 (en) Backlight unit led lens
WO2020141919A1 (en) Display apparatus
WO2014014220A1 (en) Edge-type led lighting apparatus
WO2012138123A2 (en) Lighting apparatus
WO2010044548A2 (en) Light emitting device package, manufacturing method thereof, and lighting apparatus
WO2016010214A1 (en) Light diffusing lens and light emitting device having same
WO2016108570A1 (en) Lamp unit and vehicle lamp device using same
WO2011013885A1 (en) Backlight unit and display apparatus incliding the same
WO2012067340A1 (en) Backlight unit
WO2014148777A1 (en) Backlight unit and display device having the same
WO2014014186A1 (en) Display device and light emitting device
WO2013015468A1 (en) Led lens and led module for two-sided lighting, and led two-sided lighting apparatus using same
WO2021194242A1 (en) Backlight unit, method of manufacturing the same and display apparatus including the same
WO2016148414A1 (en) Light emitting element array and lighting system including same
WO2010117167A2 (en) Led lighting apparatus, and surface emitting method for the led lighting apparatus
WO2012030086A2 (en) Backlight unit
WO2021015433A1 (en) Display apparatus
WO2009131333A2 (en) Illuminator, backlight unit comprising the illuminator and display device using the backlight unit

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10761828

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 02/02/2012)

122 Ep: pct application non-entry in european phase

Ref document number: 10761828

Country of ref document: EP

Kind code of ref document: A2