KR20120129680A - Optical semiconductor based lighting apparatus - Google Patents
Optical semiconductor based lighting apparatus Download PDFInfo
- Publication number
- KR20120129680A KR20120129680A KR1020110048080A KR20110048080A KR20120129680A KR 20120129680 A KR20120129680 A KR 20120129680A KR 1020110048080 A KR1020110048080 A KR 1020110048080A KR 20110048080 A KR20110048080 A KR 20110048080A KR 20120129680 A KR20120129680 A KR 20120129680A
- Authority
- KR
- South Korea
- Prior art keywords
- semiconductor
- optical
- envelope
- light
- annular reflector
- Prior art date
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Classifications
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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
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/237—Details of housings or cases, i.e. the parts between the light-generating element and the bases; Arrangement of components within housings or cases
-
- 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
-
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
-
- 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
-
- 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
Description
The present invention relates to an optical semiconductor-based lighting device, and more particularly, to a bulb-type optical semiconductor-based lighting device with improved light distribution characteristics.
Fluorescent and incandescent lamps have been widely used as light sources for illumination. Incandescent lamps have high power consumption and are inferior in efficiency and economy, and for this reason, their demand is greatly reduced. This decline is expected to continue in the future. On the other hand, fluorescent lamps are more efficient and economical at about one-third of the power consumption of incandescent lamps. However, fluorescent lamps have a problem in that blackening occurs due to a high applied voltage, resulting in short lifespan. In addition, since the fluorescent lamp uses a vacuum glass tube in which mercury, which is a harmful heavy metal material, is injected together with argon gas, there is a disadvantage of being unfriendly to the environment.
Recently, the demand for a lighting device including a semiconductor optical device such as an LED as a light source, that is, the LED lighting device is rapidly increasing. LED lighting devices have the advantage of long lifetime and low power driving. In addition, the LED illumination device is environmentally friendly since it does not use environmentally harmful substances such as mercury.
LED lighting apparatuses having various kinds and various structures have been developed, and one of them has been developed a bulb-type LED lighting apparatus including a similar form of incandescent lamp.
Conventional bulb-type LED lighting device has a light-transmissive envelope having a bulb shape, a socket base coupled to the top of the envelope, and a printed circuit board (PCB) disposed horizontally near the socket base in the envelope It includes, and a plurality of LED is mounted on the PCB to emit light toward the bottom of the envelope. Conventional bulb-type LED lighting device, due to the linearity of the LED, the disadvantages in the light distribution characteristic that the light from the plurality of LEDs are mainly emitted only through the lower portion of the envelope and little light is emitted to the side and rear of the envelope There is this.
Accordingly, an object of the present invention is to provide an optical semiconductor-based lighting apparatus which minimizes dark areas by expanding light distribution around the transmissive envelope.
Another problem to be solved by the present invention is to provide an optical semiconductor-based lighting device that eliminates the dark region in the rear by extending the distribution of light distribution around the front of the bulb-type envelope to the rear.
Optical semiconductor based lighting apparatus according to an aspect of the present invention, the socket base; A bulb-type light transmitting envelope coupled to the socket base; A mount member standing upright on said socket base; A semiconductor optical element array unit having a plurality of semiconductor optical elements arranged along the longitudinal direction of the mount member; Located in the middle of the translucent envelope, and includes an annular reflector for reflecting light from the semiconductor optical element array unit in at least one of the front and rear.
In the description and claims, the term 'annular reflector' includes not only the meaning of one reflective member having an annular shape, but also the meaning of the combination of reflective members arranged to have an approximately annular shape.
According to one embodiment, a plurality of the semiconductor optical device array unit is arranged along the circumference of the mount member.
According to one embodiment, the mount member comprises a heat sink.
The translucent envelope includes a first translucent cover coupled directly to the socket base and a second transmissive cover coupled to the first transmissive cover, wherein the annular reflector has an edge portion at the first translucent portion. It is fixed between the cover and the second translucent cover.
According to an embodiment, the optical semiconductor based lighting apparatus may further include one or more other annular reflectors installed at different heights from the annular reflectors.
In example embodiments, the semiconductor optical device array unit may include an elongated PCB attached to the mount member, and the plurality of semiconductor optical devices may be mounted on the PCB so as to be arrayed in a length direction of the mount member.
According to one embodiment, a light diffusing material for scattering light may be applied to the light transmitting envelope or the annular reflector.
According to an embodiment, a wavelength conversion material may be applied to the light transmitting envelope or the annular reflector.
According to one embodiment, the wavelength conversion material may include a remote phosphor (remote phosphor).
According to one embodiment, the mount member may comprise a hollow.
According to an aspect of the present invention, there is provided a light transmitting envelope; A plurality of semiconductor optical elements located within the translucent envelope; An optical semiconductor-based lighting apparatus is provided to extend inwardly from an inner circumference of the light transmitting envelope, and includes a reflective member that changes a traveling direction of light from the plurality of semiconductor optical devices.
Preferably, the reflective member may be an annular reflector provided in the middle of the transmissive envelope so as to reflect the light from the plurality of semiconductor optical elements to the front and rear of the transmissive envelope.
Preferably, the plurality of semiconductor optical devices includes at least one semiconductor optical device positioned lower than the annular reflecting unit and at least one semiconductor optical element positioned higher than the annular reflecting unit, wherein the annular reflecting unit emits light at each of the top and bottom surfaces thereof. Reflects backward and forward of the translucent envelope.
Preferably, at least one semiconductor optical device of the plurality of semiconductor optical devices is positioned at the same height as the annular reflector.
The term 'semiconductor optical element' refers to a device including or using an optical semiconductor such as a light emitting diode chip. Preferably, the semiconductor optical device is a package level LED including a light emitting diode chip therein.
The optical semiconductor-based lighting apparatus according to the present invention has an advantage that the dark region is minimized by extending the distribution of light distribution around the transmissive envelope. Furthermore, the optical semiconductor-based illumination device according to the present invention, unlike the prior art in which the light distribution is limited to the front periphery of the bulb-type translucent envelope, has the advantage that the light distribution is extended to the rear, thereby eliminating the dark areas in the rear. Has
1 is a partial cutaway perspective view of an optical semiconductor based lighting apparatus according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the optical semiconductor based lighting apparatus shown in FIG. 1.
3 is a view for explaining the operation of the optical semiconductor-based lighting device shown in FIG.
4 to 6 are views for explaining other embodiments of the present invention.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Therefore, the present invention is not limited to the embodiments described below, but may be embodied in other forms. In the drawings, the width, length, thickness, and the like of the components may be exaggerated for convenience. Like numbers refer to like elements throughout.
1 to 3, the optical semiconductor-based
The
The plurality of semiconductor optical
According to the above-described structure, a plurality of semiconductor
The
On the other hand, the
In addition, since the
In the present exemplary embodiment, the
The
Various methods may be considered to suppress or reduce a phenomenon in which the vicinity of the installation area of the
Although not shown, a wavelength converting material for converting optical wavelengths, more preferably, a remote poster, may be applied to the
As shown in FIG. 3, light from the semiconductor
4 is a view illustrating an optical semiconductor-based lighting apparatus according to another embodiment of the present invention. Referring to FIG. 4, a
FIG. 5 is a view for explaining an optical semiconductor based lighting apparatus according to another embodiment of the present invention. Referring to FIG. 5, the optical semiconductor based lighting apparatus according to the present embodiment includes a plurality of
FIG. 6 is a view for explaining an optical semiconductor based lighting apparatus according to another embodiment of the present invention. Referring to FIG. 6, the optical semiconductor based lighting apparatus according to the present embodiment faces toward the side of the
10: socket base 20: translucent envelope
22, 24: transparent cover 30: mount member
40: semiconductor optical element array unit 42: PCB
44: semiconductor
Claims (14)
A bulb-type translucent envelope coupled to the socket base;
A mount member standing upright on the socket base;
A semiconductor optical element array unit having a plurality of semiconductor optical elements arranged along the longitudinal direction of the mount member; And
Located in the middle of the translucent envelope, the optical semiconductor-based illumination device including an annular reflector for reflecting light from the semiconductor optical element array unit in at least one of the front and rear direction.
A plurality of semiconductor optical elements positioned within the translucent envelope; And
The optical semiconductor-based illuminating device is installed to extend inwardly from the inner circumference of the light-transmitting envelope, and comprises a reflecting member for changing the traveling direction of the light emitted from the plurality of semiconductor optical devices.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110048080A KR20120129680A (en) | 2011-05-20 | 2011-05-20 | Optical semiconductor based lighting apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110048080A KR20120129680A (en) | 2011-05-20 | 2011-05-20 | Optical semiconductor based lighting apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20120129680A true KR20120129680A (en) | 2012-11-28 |
Family
ID=47514141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020110048080A KR20120129680A (en) | 2011-05-20 | 2011-05-20 | Optical semiconductor based lighting apparatus |
Country Status (1)
Country | Link |
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KR (1) | KR20120129680A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104295945A (en) * | 2013-07-18 | 2015-01-21 | 王芳 | An omnidirectional light bulb and manufacture method thereof |
-
2011
- 2011-05-20 KR KR1020110048080A patent/KR20120129680A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104295945A (en) * | 2013-07-18 | 2015-01-21 | 王芳 | An omnidirectional light bulb and manufacture method thereof |
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