KR20120125587A - Indirect Lighting Apparatus Employing Piecewise Plain Parabolic Reflector - Google Patents

Indirect Lighting Apparatus Employing Piecewise Plain Parabolic Reflector Download PDF

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Publication number
KR20120125587A
KR20120125587A KR1020110043257A KR20110043257A KR20120125587A KR 20120125587 A KR20120125587 A KR 20120125587A KR 1020110043257 A KR1020110043257 A KR 1020110043257A KR 20110043257 A KR20110043257 A KR 20110043257A KR 20120125587 A KR20120125587 A KR 20120125587A
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KR
South Korea
Prior art keywords
reflector
parabolic reflector
light source
partial plane
parabolic
Prior art date
Application number
KR1020110043257A
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Korean (ko)
Inventor
신동관
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신동관
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Application filed by 신동관 filed Critical 신동관
Priority to KR1020110043257A priority Critical patent/KR20120125587A/en
Publication of KR20120125587A publication Critical patent/KR20120125587A/en

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    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F21V7/0033—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following
    • F21V7/0041—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following for avoiding direct view of the light source or to prevent dazzling
    • 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
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature
    • 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
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • 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
    • F21Y2101/00—Point-like 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
    • 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)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

1. Technical field to which the invention described in the claims belongs
The present invention relates to an indirect lighting device combining a plurality of planar reflectors on a parabola.
2. The technical problem to be solved by the invention
In a lighting lamp using a high-power LED light source, it is possible to prevent eye damage such as glare caused by the direct exposure of the light source to the outside, and to simplify the manufacturing, to control the complete viewing angle, and to have a surface light source effect. Is to provide.
3. Summary of Solution to Invention
The effect of irradiating the light reflected from the parabolic reflector in parallel from the point light source located in the focus and the spreading of the light reflected from the planar reflector from the point light source. It is to provide an indirect lighting device consisting of a partial plane parabolic reflector to achieve.
4. Important uses of the invention
Traffic lights, vehicle headlights, emergency emergency lights, plant culture lights

Description

Indirect Lighting Apparatus Using Partial Parabolic Reflector {Indirect Lighting Apparatus Employing Piecewise Plain Parabolic Reflector}

The present invention relates to an indirect illumination device using a partial plane parabolic reflector, and more particularly, the light reflected from the parabolic reflector from the point light source located in focus out and in parallel, and the light reflected from the plane reflector from the point light source is diffused Combining the characteristics of going out, it relates to an indirect lighting device configured to have an effect that one point light source is irradiated like a plurality of point light sources.

The light source is not directly exposed to the inside of the viewing angle to prevent glare, and has a surface light source effect such as that emitted from multiple point light sources, while the viewing angle from the lighting device is completely controlled, and the efficiency of light emitted from the lighting device is improved. By increasing, there is an effect that can be applied to various fields such as traffic lights, automobile headlights, plant culture lights, emergency emergency lights, and the like.

As is well known, LED (Light Emitting Diode) is widely used as a light source for industrial products such as indicator lights, landscape lighting, electronic signs, traffic lights, automobile headlights, park lights, emergency warning lights. The LED lighting apparatus is configured to increase the illuminance of the irradiation surface by limiting the viewing angle (spreading angle) of the light by using an optical device such as a reflector in order to efficiently use the light generated by the LED.

However, the structure of most existing lighting devices are exposed to the strong light of the light source, there is a glare phenomenon when looking directly at the light source with the naked eye, it is inconvenient, and ultimately has a disadvantage that can damage the eyes such as vision damage. Therefore, a lighting device (patent application 10-2008-0020265 asymmetric indirect lighting device) that can prevent damage to eyesight, such as glare generated when the light source is directly exposed to the outside in a light using a high power LED light source has been proposed, The configuration is complicated, there is a problem of difficulty and error of production by using a plurality of parabolic reflectors, and there is a problem that irradiated light is not uniform for each irradiation position.

The present invention was derived to solve the above problems.

By combining the light reflected from the parabolic reflector from the point light source located in focus in parallel with the light diffused from the planar reflector from the point light source, a single point light source has a number of equal points of light. It is an object of the present invention to provide an indirect lighting device that converts to look like a surface light source effect is achieved.

Indirect illumination device 100 using a partial plane parabolic reflector according to the present invention,

Referring to FIG. 1A, an LED 101 emitting light; And a plurality of planar reflectors 102, 103, and 104; both ends of each of the plurality of planar reflectors 102, 103, and 104 are continuously coupled, and the LED 101 is a parabolic curve (D). -D '), characterized in that located at the focus. In addition, each focal point (P, Q, R) is located on the line segment (Y-Y ') which is the quasi line of the parabolic curve (D-D'), and the line segment (A-) passing through each of the focal points (P, R). A ', B-B') are parallel to the line of sight (X-X ', hereinafter referred to as the main axis) including the focal point Q and the LED 101, and the respective planar reflectors 102, 103, 104 ) Is a tangent to the parabolic curve (D-D '), where the line segments A-A', X-X ', and B-B' meet with the planar reflectors 102, 103, and 104, respectively. Is characterized in that the contact point of the parabolic curve (D-D ').

In addition, the light rays reflected from the LEDs 101 are reflected to the respective planar reflectors 102, 103, and 104 are radiated at a predetermined viewing angle θ at each of the focal points P, Q, and R. The location and size of each planar reflector 102, 103, 104 are determined to have the same effect.

Accordingly, the planar reflectors 102, 103, and 104 divide the parabolic curves D-D 'into a plurality of parts, and replace the planar reflectors with the planar reflectors.

FIG. 1B illustrates a principle in which the same amount of light is reflected from each planar reflector in the indirect illuminator according to the present invention. Indirect illuminator 200 using the partial planar parabolic reflector according to the present invention includes five planar reflectors 105. 109) and one embodiment including the LED 101 is shown. The position and size of the plane reflector 106 are set so that the triangle SUW and the triangle TUW are congruent with each other, and the position and size of the plane reflector 105 such that the triangle SWX and the triangle VWX are congruent with each other. Is set. The same principle applies to the remaining planar reflectors. Accordingly, the intensity of light reflected by the plane reflectors 105 to 109 by the light generated by the LEDs 101 is uniform, and has an effect equivalent to that irradiated uniformly at the angle θ at each focal point. It is characterized by.

1A and 1B, the number of plane reflecting mirrors in which a line segment connected in parallel with a main axis meets the parabolic curve D-D 'at a plurality of focal points uniformly irradiated at a viewing angle θ. Can be used in a large number, and therefore, when the viewing angle θ is small, a larger surface light source effect can be obtained because a lighting device including a large number of partial plane reflecting mirrors can be configured.

2A illustrates a shaded area generated by the light source module with reference to FIG. 1A. In the above, the LED 101 is considered and described as a point light source, but the light source is composed of the LED 101 and the LED body 120 to fix the LED. Since the LED body 120 covers a part of the light reflected from each of the planar mirrors 102, 103, and 104, a part of the irradiation area by each of the reflected rays becomes a shadowed area. Accordingly, the light irradiated at each of the focal points P, Q, and R has shadow areas A ″, B ″, and C ″, respectively, which may cause a problem that illuminance of the irradiation surface is not uniform.

Figure 2b shows the configuration of an indirect lighting device using a partial plane parabolic reflector to remove the shadow area in accordance with the present invention. The opaque coating is applied to the plane reflector 103, or the reflection function is removed, and the shadowed spots (P, R) are removed from the shadowed spots by being located farther from the dotted spot (Q) located at the center of the quasi-line, respectively. It is done. The light irradiated from the LED 101 does not exceed the outer range of each of the planar reflectors 102 and 104 by the LED body 120, and also the inner range of the light reflected by the planar reflectors 102 and 104. Since the deviation from the position of the LED body 120 is characterized in that the shadow area is not generated.

The lighting device using the hyperbolic reflector or the parabolic reflector has no surface light effect, but the indirect lighting device using the partial plane parabolic reflector of the present invention has a surface light source similar to that of using a plurality of point light sources having the same brightness for one point light source. It works.

Since the light source is not directly exposed to the inside of the viewing angle to prevent glare, and has a surface light source effect, the irradiation of light from the lighting device is fully controlled within the set viewing angle, thereby increasing the illuminance, thereby increasing power efficiency.

In the existing traffic lights, the visor is used to prevent the light from spreading over a certain angle. The indirect lighting device using the partial plane parabolic reflector of the present invention replaces the existing traffic lights by controlling the complete viewing angle. can do. In addition, there is an effect that can be applied to a variety of fields, such as car headlights, plant culture lighting in the plastic house.

Figure 1a is a member view of the indirect illumination device using a partial plane parabolic reflector according to the present invention
Figure 1b is a view showing the principle of the same amount of light reflection for each partial planar mirror in the indirect lighting apparatus according to the present invention
2A is a diagram illustrating a shaded area by a light source module.
Figure 2b is a member diagram of the indirect lighting device using a partial plane parabolic reflector to remove the shadow area in accordance with the present invention
3A is a perspective view of an indirect lighting apparatus using a panel-type partial plane parabolic reflector composed of a line light source LED according to a first embodiment of the present invention.
FIG. 3B is a pattern of reflected light rays of the device of FIG. 3A
FIG. 3C is a view showing a source-like surface light source-like effect of the apparatus of FIG. 3A
Figure 3d is a perspective view of an indirect illumination device using a partial plane parabolic reflector coupled to a plurality of panel-type partial plane parabolic reflectors in accordance with the present invention
4A is a perspective view of an indirect lighting apparatus using a conical partial plane parabolic reflector composed of a point light source LED according to a second embodiment of the present invention.
4B is a pattern of reflected light rays of the device of FIG. 4A
4C is a cross-sectional view taken along the diameter of the device of FIG. 4A
5A is a perspective view of an indirect lighting apparatus using a conical partial plane parabolic reflector having an elliptical aperture in accordance with the present invention.
5B is an elliptical aperture view in FIG. 5A
Figure 5c is a pattern of the opening surface and the reflected light beam of the indirect illumination device using a partial plane parabolic reflector having a vertically asymmetrical elliptical structure in accordance with the present invention
Figure 6a is a pattern of the reflected light of the indirect illumination device using a narrow viewing angle partial plane parabolic reflector according to a third embodiment of the present invention
FIG. 6B shows the source distance surface light source effect of the device of FIG. 6A. FIG.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like elements throughout the specification.

3A shows an indirect view using an LED module 110 and a partial plane parabolic mirror having a viewing angle of 40 degrees according to the first embodiment of the present invention, wherein the light source is configured in a panel form using a linear array of multiple LEDs or a linear light source LED. A perspective view of the lighting apparatus 300. The transparent protective cap for protecting the entire lighting device and the housing for supplying power to the LED module 110 should be included, so it is not shown in the drawings. In order to show that the shading effect by the LED module 110 can be removed, the planar reflector closest to the parabolic subline has a feature not used by removing the reflection surface.

FIG. 3B is a side view of the indirect lighting device 300 shown in FIG. 3A taken along the XY plane, showing a pattern of reflected light rays in a plurality of planar reflectors. Referring to FIG. 3B, since the light is incident at the same angle to each of the partial plane mirrors from the light source, it is reflected in the form equivalent to the amount of light and the viewing angle being uniformly irradiated at the focal point (J, K, L, M), and thus each plane reflector Reflected light is characterized by being uniform. FIG. 3C is a view showing a surface light source-like effect at the source distance, and using one point light source shows the same effect as using four point light sources at the source distance. Therefore, the indirect lighting device 300 configured as a panel has the same effect as using four linear light sources for one linear light source.

3d shows a perspective view of an indirect lighting apparatus using a partial plane parabolic reflector in which a plurality of partial plane parabolic reflectors 300 are combined as a unit module. Using 4 LED light sources has the same effect as using a total of 16 LED light sources, and thus has a similar effect to the surface light source. In particular, there is a feature that fully meets the left and right 40 degree viewing angle restriction conditions required by traffic lights, and the number of units of the module can be used to create a lighting device of various sizes and shapes.

4A is a perspective view of an indirect illumination device 400 using a partial plane parabolic reflector configured as a cone according to a second embodiment of the present invention. 4B and 4C are cross-sectional and perspective views showing patterns of the reflected light beams from the LED module 110 by cutting the indirect lighting device 400 of FIG. 4A around the diameter. 4B and 4C, the indirect illumination device 400 using the conical partial plane parabolic reflector exhibits a surface light source-like effect in which light is emitted from four circular light sources even using one point light source. When applied to the headlights of the car, it is not necessary to remove the shadow area generated by the LED module 110, the viewing angle of the reflected light that occupies most of the amount of light to be irradiated is completely controlled.

5A is a perspective view of an indirect illumination device 500 using a conical partial plane parabolic reflector having an elliptical aperture in accordance with the present invention, and FIG. 5B is an elliptical aperture diagram of the illumination device shown in FIG. 5A. It can be used in various applications where it is necessary to set the left and right viewing angles differently. In particular, Figure 5c shows the pattern of the opening surface and the reflected light of the indirect illumination device 520 consisting of a partial plane parabolic reflector having an up-down asymmetrical oval opening in accordance with the present invention, the lower axis radius is greater than the upper axis radius If large, the reflected light is driven downward as shown, when applied to the headlights of the car there is an advantage that does not cause damage due to the upward lighting to the other vehicle when driving at night.

FIG. 6A is a view illustrating a pattern of reflected light in the indirect lighting device 600 using a partial plane parabolic reflector having a viewing angle θ of 10 degrees according to a third embodiment of the present invention. Since the irradiation intensity is high and has a life-friendly surface light source effect, it can be applied to plant cultivation lamps, animal breeding lamps and many other fields. Figure 6b is a diagram showing the effect of the source light surface light source similar.

100: indirect lighting device using a partial plane parabolic reflector
101: LED light source
102 ~ 108: partial flat mirror
110: LED module
120: LED body
200: indirect lighting device using a partial plane parabolic reflector
300: Indirect lighting device using panel-type partial plane parabolic reflector with 40 degree viewing angle
400: indirect lighting device using a conical partial plane parabolic reflector
500: indirect lighting device using a conical partial plane parabolic reflector having an elliptical aperture
520: indirect lighting apparatus using a conical partial plane parabolic reflector having an up-down asymmetrical oval opening
600: indirect lighting device using a partial plane parabolic reflector having a narrow viewing angle

Claims (8)

LED 101 for emitting light; And a plurality of planar reflectors (102, 103, 104);
Both ends of each of the plurality of planar reflectors 102, 103, 104 are continuously coupled,
The LED 101 is located at the focal point of the parabolic curve (D-D '),
Each focal point (P, Q, R) is located on the line segment (Y-Y ') which is the quasi line of the parabolic curve (D-D'),
A line segment (X-X ') including the focal point Q and the LED 101, and a line segment A-A' and B-B 'passing through the respective focal points P and R parallel to the main axis. Points that meet each of the planar reflectors 102, 103, and 104 become tangents to the parabolic curve D-D ',
Light rays emitted from the LEDs 101 and reflected by the planar reflectors 102, 103, and 104 are equivalent to those emitted at a predetermined viewing angle θ at each of the focal points P, Q, and R. The location and size of each of the planar reflectors 102, 103, 104 are determined to have an effect.
Indirect lighting device using a partial plane parabolic reflector characterized in that.
The method of claim 1,
Partial plane paraboloids characterized in that a plurality of planar reflectors can be used as long as there is a point where the line segments connected in parallel with the main axis meet at the parabolic curve D-D 'at a plurality of focal points uniformly irradiated at a viewing angle θ. Indirect lighting device using a reflector.
The method of claim 1,
Indirect illumination using a partial plane parabolic reflector, characterized in that the structure of the partial parabolic mirror determined by the displacement of the line segment (Y-Y ') is composed of a panel type having a uniform structure regardless of the (Z-Z') axis. Device.
The method of claim 3, wherein
Punch a hole in the plane reflector closest to the baseline (Y-Y '), opaque coating, or remove the reflection to prevent it from acting as a reflector, and move the rest of the focal point away from the center of the baseline (Q). Indirect lighting device using a partial plane parabolic reflector, characterized in that to remove the shadow area caused by the LED module body by positioning so as to be.
The method of claim 3, wherein
Indirect illumination device using a partial plane parabolic reflector, characterized in that it can be configured to expand the size and shape by configuring a plurality of panel-type partial plane parabolic reflector as a unit module.
The method of claim 1,
Indirect illumination device using a partial plane parabolic reflector consisting of a conical shape obtained by rotating the plane reflector (102, 103, 104) about the main line segment (X-X ').
The method according to claim 6,
Indirect illumination device using a partial plane parabolic reflector, characterized in that the opening surface is elliptical.
The method according to claim 6,
Indirect illumination device using a partial plane parabolic reflector, characterized in that the opening surface is an asymmetrical oval with a different radius of the upper and lower.
KR1020110043257A 2011-05-08 2011-05-08 Indirect Lighting Apparatus Employing Piecewise Plain Parabolic Reflector KR20120125587A (en)

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KR1020110043257A KR20120125587A (en) 2011-05-08 2011-05-08 Indirect Lighting Apparatus Employing Piecewise Plain Parabolic Reflector

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102028570B1 (en) * 2018-04-30 2019-10-04 주식회사 신성일렉스 High Intensity Aviation Obstacle Light

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102028570B1 (en) * 2018-04-30 2019-10-04 주식회사 신성일렉스 High Intensity Aviation Obstacle Light

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