EP2636943A1 - LED-Lampensatz zur Verstärkung der Beleuchtung und Beseitigung von Doppelbildern - Google Patents
LED-Lampensatz zur Verstärkung der Beleuchtung und Beseitigung von Doppelbildern Download PDFInfo
- Publication number
- EP2636943A1 EP2636943A1 EP12158272.0A EP12158272A EP2636943A1 EP 2636943 A1 EP2636943 A1 EP 2636943A1 EP 12158272 A EP12158272 A EP 12158272A EP 2636943 A1 EP2636943 A1 EP 2636943A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- led lamp
- lamp set
- circuit board
- lamp shade
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Images
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
- F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S4/00—Lighting devices or systems using a string or strip of light sources
- F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
- F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
-
- 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
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
- F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
-
- 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
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present invention relates to a lamp shade and particularly to an LED lamp set for enhancing illumination and eliminating ghost images.
- Conventional lamp sets are quite bulky and often need a higher socket coupled with a bowl-shaped lamp shade formed at a smaller depth. When used for a prolonged period of time a higher temperature is generated that could be hazardous. Moreover, when the conventional lamp sets are configured in multiple numbers, multiple images are generated and overlapped, they also are called ghost images. In addition, the conventional lamp sets often produce flicker illumination that easily causes fatigue of users' eyes and results in ill effect to users' vision.
- LED Light emitting diode
- the lighting fixtures for LED cannot adopt the conventional design and require a new approach. Due to smaller size and higher illumination of the LED, the light scatters in all directions through the conventional lamp shade that could cause discomfort to users' eyes.
- Many methods have been proposed to remedy the aforesaid problems, such as increasing the number or illumination of the LEDs. While illumination is increased, power consumption is reduced and temperature is lowered, the problem of multiple images becomes even more severe due to light scattering. This problem must be resolved by taking into account of light refraction and reflection, and design of the lamp shade.
- the primary object of the present invention is to provide an LED lamp set for enhancing illumination and eliminating ghost images.
- the LED lamp set according to the invention includes a lamp shade, a diffusion membrane and a circuit board.
- the lamp shade has a plurality of light cups each having a housing chamber to hold at least one LED.
- the housing chamber has an aperture at the bottom run through by the LED to form electric connection with the circuit board and an opening remote from the aperture to define a light output surface.
- the diffusion membrane provides a uniform light facing surface. It includes a substrate added with chemical particles for light scattering. When light passes through the diffusion membrane, it travels through the media with two different refraction indexes to generate refraction, reflection and scattering. Hence an optical diffusion phenomenon is formed.
- the diffusion membrane covers the light output surface and contains a plurality of transparent bumps to further enhance light uniform.
- the invention uses the LED with high illumination and low power consumption for illumination.
- the concave shape of the light cups and repetitive reflection of the bumps and light can be condensed to avoid scattering and loss.
- the problem of ghost images can also be eliminated.
- the present invention includes a lamp shade 20, a diffusion membrane 10 and a circuit board 30.
- the lamp shade 20 includes a plurality of opaque reflective mirror surfaces 22 inside to reduce light scattering of abutting light sources and a plurality of light cups 23.
- Each light cup 23 is formed in a concave shape and has a housing chamber 24 to hold at least one LED 40.
- the housing chamber 24 has an aperture 28 at the bottom run through by the LED 40 to form electric connection with the circuit board 30 and an opening 27 remote from the aperture 28 to define a light output surface 271.
- the opening 27 is formed at a length L equal to the distance D from the opening 27 to the aperture 28 (referring to FIG. 3 ) to form an optimal light travel path.
- the housing chamber 24 contains a reflective surface 241 proximate the opening 27 and perpendicular to the light output surface 271.
- the reflective surface 241 confines the light travel path to prevent light scattering and loss.
- the entire lamp shade 20 is plated with aluminum 201 in a silver-white color to increase light reflection.
- the reflective mirror surface 22 can reduce light scattering of the abutting LEDs, and the concave light cups 23 can enhance concentration of the light emitted from the LEDs 40.
- Each light cup 23 further may have a plurality of light reflection protrusive traces 21 on the wall to increase light reflection.
- the diffusion membrane 10 covers the light output surface 271 to provide a uniform light facing surface. It includes a substrate added with chemical particles for light scattering. When light passes through the diffusion membrane 10, it travels through the media with two different refraction indexes to generate light diffusion effect.
- the diffusion membrane 10 is made of a transparent material and contains a plurality of bumps 11 which are evenly distributed and can evenly diffuse light to further reduce the light diffusion problem caused by multiple sets of light sources.
- the lamp shade 20 has a plurality of support brackets 25 on an outer side thereof that are fastened to the circuit board 30 through screws 251.
- the circuit board 30 has an upper surface 301 and a lower surface 302.
- the LED 40 is fastened to the upper surface 301.
- the circuit board 30 also has one set of radiation fins 32 located on the lower surface 302 connecting to the light cups 23 via the circuit board 30. Hence heat generated by the LED 40 can be channeled out quickly.
- the LED 40 further is encased by a transparent light condensing hood 29 to enhance illumination.
- the LED 40 when the LED 40 emits light 50, the light 50 enters the light cup 23 and is reflected repeatedly by the transparent bumps 11, reflective mirror surface 22 and light condensing hood 29 and condensed to project towards the light output surface 271. Therefore, light condensing effect is accomplished and a uniform illumination is also realized. Through such optical reflection and refraction structure, illumination can be enhanced and ghost image can be eliminated to meet use requirements.
- the light condensing hood 29 can be omitted.
- the light condensing hood 29 aims to control light condensing angle of the LED, even the light condensing hood 29 is omitted, the light condensing effect still can be achieved through reflection of the reflective mirror surface 22.
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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12158272.0A EP2636943A1 (de) | 2012-03-06 | 2012-03-06 | LED-Lampensatz zur Verstärkung der Beleuchtung und Beseitigung von Doppelbildern |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12158272.0A EP2636943A1 (de) | 2012-03-06 | 2012-03-06 | LED-Lampensatz zur Verstärkung der Beleuchtung und Beseitigung von Doppelbildern |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2636943A1 true EP2636943A1 (de) | 2013-09-11 |
Family
ID=45954302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12158272.0A Withdrawn EP2636943A1 (de) | 2012-03-06 | 2012-03-06 | LED-Lampensatz zur Verstärkung der Beleuchtung und Beseitigung von Doppelbildern |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2636943A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10161595B2 (en) * | 2012-03-18 | 2018-12-25 | Robe Lighting S.R.O. | Collimation system for an LED luminaire |
WO2021165068A1 (de) * | 2020-02-19 | 2021-08-26 | Zumtobel Lighting Gmbh | Längliche leuchte |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5580156A (en) * | 1994-09-27 | 1996-12-03 | Koito Manufacturing Co., Ltd. | Marker apparatus |
US20030156416A1 (en) * | 2002-02-21 | 2003-08-21 | Whelen Engineering Company, Inc. | Led light assembly |
US20090290340A1 (en) * | 2007-02-13 | 2009-11-26 | Showa Denko K.K. | Lighting Device |
CN101634425A (zh) * | 2008-07-22 | 2010-01-27 | 曾辉鹏 | 消除led鬼影的装置 |
US7950821B1 (en) * | 2007-10-26 | 2011-05-31 | Georgitsis Anthony C | Auxiliary lighting systems |
-
2012
- 2012-03-06 EP EP12158272.0A patent/EP2636943A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5580156A (en) * | 1994-09-27 | 1996-12-03 | Koito Manufacturing Co., Ltd. | Marker apparatus |
US20030156416A1 (en) * | 2002-02-21 | 2003-08-21 | Whelen Engineering Company, Inc. | Led light assembly |
US20090290340A1 (en) * | 2007-02-13 | 2009-11-26 | Showa Denko K.K. | Lighting Device |
US7950821B1 (en) * | 2007-10-26 | 2011-05-31 | Georgitsis Anthony C | Auxiliary lighting systems |
CN101634425A (zh) * | 2008-07-22 | 2010-01-27 | 曾辉鹏 | 消除led鬼影的装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10161595B2 (en) * | 2012-03-18 | 2018-12-25 | Robe Lighting S.R.O. | Collimation system for an LED luminaire |
WO2021165068A1 (de) * | 2020-02-19 | 2021-08-26 | Zumtobel Lighting Gmbh | Längliche leuchte |
US11680690B2 (en) | 2020-02-19 | 2023-06-20 | Zumtobel Lighting Gmbh | Elongate light fixture |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20130117 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
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17Q | First examination report despatched |
Effective date: 20160927 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20181002 |