WO2011040829A1 - Light-emitting diode lighting device - Google Patents
Light-emitting diode lighting device Download PDFInfo
- Publication number
- WO2011040829A1 WO2011040829A1 PCT/RU2009/000508 RU2009000508W WO2011040829A1 WO 2011040829 A1 WO2011040829 A1 WO 2011040829A1 RU 2009000508 W RU2009000508 W RU 2009000508W WO 2011040829 A1 WO2011040829 A1 WO 2011040829A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- lighting device
- reflective element
- reflecting element
- profile
- Prior art date
Links
Classifications
-
- 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
- F21V7/0008—Reflectors for light sources providing for indirect lighting
-
- 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
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
- F21V7/30—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings the coatings comprising photoluminescent substances
-
- 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]
Definitions
- the invention relates to lighting engineering, namely, to lighting devices with semiconductor radiation sources and can be used for indoor and outdoor local and general lighting.
- a garden lamp which contains an LED emitter, opposite which a flat reflector is installed, which distributes the light flux reflected from its surface to the illuminated object (application JN ° DE102005053304, IPC F21V7 / 05, published April 10, 2008).
- a disadvantage of the known solution is the location of the emitter, the optical axis of which is directed almost perpendicular to the reflective surface. This arrangement of these elements determines the essential dimensions of the device. In this case, a part of the light flux directed to the axis of the device is lost.
- a reflector having a profiled surface mounted so that the entire light flux emitted by the LEDs into the solid angle ⁇ illuminates the entire surface of the reflector (application H ° ⁇ ⁇ O0071930, IPC H01L33 / 00; F21S8 / 04, published 30.11.2000).
- the placement of light sources so that the light flux directed to the solid angle ⁇ illuminates the entire surface of the reflector prevents the possibility of reducing the height of the lamp.
- the size of the reflector area illuminated by each of the LEDs should correspond to the angular aperture of the light radiation.
- the solid angle ⁇ of the light emission of the LEDs, the direction of their optical axis and the position of the reflector in space are interconnected. Any change in the direction of the optical axis of the LED relative to the surface of the reflector will lead to the loss of part of the light flux. It should be noted that the above condition imposes a limitation on the possible choice of the type of LED.
- the most effective of the created LEDs characterized by a large angular aperture of radiation, become obviously unsuitable for a known device.
- the consequence of this mutual spatial arrangement of the elements of the device is the impossibility of minimizing the overall height of the lamp.
- the technical result of the invention is to reduce the overall height of the LED lighting device; increasing the brightness of the reflective element; expanding the range of possible use of LED light sources, including LEDs with a wide angular aperture of radiation.
- An LED lighting device comprising a profiled cylindrical reflective element; LEDs arranged along said reflective element, the maximum luminous flux of which is directed along the line connecting the ends of the profile of the reflective element; a reflector placed along said reflective element with the possibility of reflecting part of the light flux of the LEDs on the cylindrical surface of said reflective element.
- R (a) Ro 1 - s i n (a), where
- R (a) is the polar radius of the point on the profile located under the corner and degrees to the polar axis
- the cylindrical surface of the reflective element is a scattering surface (Lambert surface);
- the cylindrical surface of the reflective element is provided with a phosphor coating
- the 100-reflective element is equipped with a second line of LEDs located on the other side of the profile opposite the first line of LEDs.
- the relatively close distance of the LEDs to the surface of the reflective element increases its illumination and, as a result, the brightness of the light flux reflected from the Lambert surface.
- the latter is also true with respect to the surface of a reflective element provided with phosphor particles.
- figure 1 shows a cross section of the device
- figure 2 shows an option for sharing four
- the LED lighting device shown in figure 1 contains a profiled cylindrical reflective element 1, light diodes 2 placed along it, the optical axis O-O of which is directed along the line connecting the ends of the profile
- a reflector 3 mounted along the reflective element 1 with the possibility of reflection of part of the light flux of the LEDs 2 on the cylindrical surface 4 of the reflective element 1.
- the radius vector Ro in the case shown exactly coincides with the axis O-O,
- the dashed line in figure 1 shows the angle of emission of the LED equal to ⁇ .
- Half of the light flux of the radiation of the LED 2 at an angle ⁇ falls on a cylindrical surface 4
- the second half of the light flux generated by the LED 2 is reflected from the reflector 3, the surface of which is made with a high reflection coefficient, and is directed to the cylindrical surface 4.
- the entire surface 4 is summed
- SUBSTITUTE SHEET (RULE 26) LED lighting device may be used 150 in the form of various options, including two or more single devices, shown in figure 1., depending on the need.
- FIG. 2 is notable for the symmetrical placement of two pairs of I and II devices, the LED lines 2 being located on adjacent surfaces of a pair of 155 reflective elements 1. It should be noted that in a configuration of four combined devices, the technical result of the invention will also be achieved by arranging the rulers LEDs with equal pitch.
- the end surfaces of the latter can be made with reflective or light-scattering properties, and the surfaces themselves must have through holes for intensifying heat exchange.
- LED lighting device is designed to create local indoor and outdoor lighting. It is clear that for specific operating conditions, different device options will be optimal. So, for indoor lighting optimal
- 170 is the use of the device as a ceiling lamp similar to that shown in FIG. 2.
- the dimensions of such a lamp can be adapted for specific purposes, for example, to create a popular standard ceiling lighting device with a 595x595 mm plan size.
- the device can be equipped with two rows of light-emitting diodes.
- the invention can be implemented by known means, therefore, its use should not cause difficulties for a specialist.
- the design of the components of the lighting device is easily amenable to automatic production.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200990100796.0U CN204494306U (en) | 2009-09-30 | 2009-09-30 | LED illumination device |
PCT/RU2009/000508 WO2011040829A1 (en) | 2009-09-30 | 2009-09-30 | Light-emitting diode lighting device |
EA201100841A EA018338B1 (en) | 2009-09-30 | 2009-09-30 | Light-emitting diode lighting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/RU2009/000508 WO2011040829A1 (en) | 2009-09-30 | 2009-09-30 | Light-emitting diode lighting device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011040829A1 true WO2011040829A1 (en) | 2011-04-07 |
Family
ID=43826489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU2009/000508 WO2011040829A1 (en) | 2009-09-30 | 2009-09-30 | Light-emitting diode lighting device |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN204494306U (en) |
EA (1) | EA018338B1 (en) |
WO (1) | WO2011040829A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1021159A (en) * | 1963-11-18 | 1966-03-02 | Lucas Industries Ltd | Lamps |
DE4237107A1 (en) * | 1992-11-03 | 1994-05-05 | Wustlich Holding Gmbh | Background illumination device for flat display surface - arranges LEDs in row parallel to one side wall on circuit board, below display surface, provides convex side wall, and fills enclosed space with light-scattering transparent material |
RU2189523C2 (en) * | 1998-12-30 | 2002-09-20 | Открытое акционерное общество "ЛОМО" | Light-emitting diode lighting unit |
US20090003400A1 (en) * | 2006-03-10 | 2009-01-01 | Nichia Corporation | Light-emitting device |
-
2009
- 2009-09-30 WO PCT/RU2009/000508 patent/WO2011040829A1/en active Application Filing
- 2009-09-30 EA EA201100841A patent/EA018338B1/en not_active IP Right Cessation
- 2009-09-30 CN CN200990100796.0U patent/CN204494306U/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1021159A (en) * | 1963-11-18 | 1966-03-02 | Lucas Industries Ltd | Lamps |
DE4237107A1 (en) * | 1992-11-03 | 1994-05-05 | Wustlich Holding Gmbh | Background illumination device for flat display surface - arranges LEDs in row parallel to one side wall on circuit board, below display surface, provides convex side wall, and fills enclosed space with light-scattering transparent material |
RU2189523C2 (en) * | 1998-12-30 | 2002-09-20 | Открытое акционерное общество "ЛОМО" | Light-emitting diode lighting unit |
US20090003400A1 (en) * | 2006-03-10 | 2009-01-01 | Nichia Corporation | Light-emitting device |
Also Published As
Publication number | Publication date |
---|---|
EA018338B1 (en) | 2013-07-30 |
EA201100841A1 (en) | 2012-02-28 |
CN204494306U (en) | 2015-07-22 |
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