EP2481971A1 - Lampe à diode électroluminescente réfléchissante - Google Patents

Lampe à diode électroluminescente réfléchissante Download PDF

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Publication number
EP2481971A1
EP2481971A1 EP11152854A EP11152854A EP2481971A1 EP 2481971 A1 EP2481971 A1 EP 2481971A1 EP 11152854 A EP11152854 A EP 11152854A EP 11152854 A EP11152854 A EP 11152854A EP 2481971 A1 EP2481971 A1 EP 2481971A1
Authority
EP
European Patent Office
Prior art keywords
shell
lamp
led lamp
unit
reflection
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Withdrawn
Application number
EP11152854A
Other languages
German (de)
English (en)
Inventor
Shih-Che Tseng
Mao-Sung Hsu
Chen-Pin Chen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tyntek Corp
Original Assignee
Tyntek Corp
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 Tyntek Corp filed Critical Tyntek Corp
Priority to EP11152854A priority Critical patent/EP2481971A1/fr
Publication of EP2481971A1 publication Critical patent/EP2481971A1/fr
Withdrawn legal-status Critical Current

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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
    • F21V3/00—Globes; Bowls; Cover glasses
    • 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
    • F21K9/232—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 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • 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
    • 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
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-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
    • 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
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • 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

  • This invention relates to a lamp, and more particularly to a reflective light emitting diode (LED) lamp.
  • LED reflective light emitting diode
  • a conventional reflective lamp 1 disclosed in Taiwanese Patent Publication No. 200933075 includes a metallic sleeve 11, and a conical reflecting surface 12 disposed at the center of an end wall of the sleeve 11.
  • a surrounding wall 111 of the sleeve 11 is formed with a mounting hole 112 for receiving an LED 13.
  • a light 131 emitted from the LED 13 is incident on the conical reflecting surface 12 to form reflected light 132, and is transmitted out of the sleeve 11.
  • the sleeve 11 Since the sleeve 11 is metallic, heat can be dissipated quickly from the LED 13. Furthermore, since the light 132 transmitted out of the sleeve 11 is reflected light, glare can be avoided.
  • the object of this invention is to provide a reflective light emitting diode lamp that has a good heat-dissipating effect and that includes a non-conical light-reflecting surface capable of reflecting light before the light is transmitted out of the lamp, so as to avoid glare.
  • a reflective LED lamp comprises:
  • the LED unit is disposed within the metallic shell, heat can be dissipated quickly therefrom during use of the lamp. Furthermore, since the light is reflected by the reflection region unit before it is transmitted out of the shell, glare is avoided.
  • the first preferred embodiment of a reflective LED lamp 200 includes a heat-dissipating metallic shell 2, a reflecting member 3, an LED unit including a plurality of LEDs 4, and a conductive lamp base 5.
  • the lamp base 5 is connected to the metallic shell 2 along a lamp axis (A) (see Fig. 5 ).
  • the shell 2 is made of a thermally conductive material, such as aluminum, and includes a base wall 21 (see Fig. 5 ), and a surrounding wall 22 disposed about the lamp axis (A) and connected integrally to an outer periphery of the base wall 21 to define an accommodating space 23 that is open upwardly.
  • the reflecting member 3 is made of glass, and is disposed within the accommodating space 23.
  • a bolt 30 extends through a central hole 31 in the reflecting member 3 to engage a threaded hole 211 in the base wall 21, such that the reflecting member 3 is secured on the base wall 21 and in the accommodating space 23.
  • the reflecting member 3 has a reflection region unit including a plurality of interconnected reflection regions 32 each configured as a concaved curve surface.
  • the reflecting member 3 is made of a heat-resistant plastic material, such as ABS, and is plated with an aluminum film for light-reflecting purposes.
  • the surrounding wall 22 is formed with a mounting hole unit including a plurality of angularly equidistant mounting holes 221 arranged along a circle.
  • the reflection regions 32 correspond respectively to the mounting holes 221.
  • Each of the LEDs 4 is mounted on a circuit board (not shown), and is connected electrically to the lamp base 5 by a power transmission cable (not shown). As such, the LEDs 4 can emit light therefrom when electricity is supplied to the circuit boards.
  • the LEDs 4 are located respectively within the mounting holes 221 for emitting light onto the reflection regions 32, respectively.
  • the light incident on the reflection regions 32 is reflected out of the shell 2 through a light-permeable cover 6 mounted on a top end of the sleeve 2.
  • the shell 2 further includes a plurality of heat-dissipating fins 24 extending from an outer surface of the surrounding wall 22 of the shell 2 for promoting the heat-dissipating effect of the shell 2. Since the LEDs 4 are concealed within the shell 2, glare resulting from looking directly at the LEDS 4 can be avoided.
  • Each of the LEDs 4 is disposed at a focal point of the corresponding reflection region 32, so that the light beams reflected by the reflection regions 32 are parallel to each other and the lamp axis (A) . Since the mounting holes 221 are angularly equidistant, the reflected light has a symmetrical and uniform light shape.
  • Each of the reflection regions 32 has a plurality of reflecting surfaces 321. Any two adjacent ones of the reflecting surfaces 321 are interconnected by a connecting portion 322.
  • Areas of the reflecting surfaces 321 of each of the reflection regions 32 increase gradually in an upward direction away from the lamp base 5 (i.e., the area of an upper one of any adjacent pair of the reflecting surfaces 321 is greater than that of a lower one of the same), and inclination angles of the reflecting surfaces 321 of each of the reflection regions 32 also increase gradually in the direction (i.e., the inclination angle of an upper one of any adjacent pair of the reflecting surfaces 321 is greater than that of a lower one of the same), so as to optimize the light shape of the light reflected by the reflection regions 32, thereby avoiding glare.
  • the lamp 200 includes three reflection regions 32, three mounting holes 221, and three LEDs 4. Alternately, the number of these components may be changed to one, two, or more than three.
  • the lamp 200 of this invention has the following advantages:
  • Fig. 6 shows the second preferred embodiment of a reflective LED lamp 200 according to this invention, which is similar in construction to the first preferred embodiment.
  • each of the reflection regions 32 has first, second, and third reflection sections 323, 324, 325.
  • the second reflection section 324 is connected between the first and third reflection sections 323, 325, such that it is farther from the lamp base 5 (see Fig. 5 ) than the first reflection section 323, and nearer to the lamp base 5 (see Fig. 5 ) than the third reflection section 325.
  • each of the LEDs 4 is located at a focal point (F) of the second reflecting section 324 of the corresponding reflection region 32, such that the light beams reflected from the second reflecting section 324 are parallel to the lamp axis (A) .
  • the first reflecting section 323 of each of the reflection regions 32 is shaped such that each of the light beams reflected therefrom is inclined, and advances in a direction away from the lamp axis (A).
  • the third reflecting section 325 of each of the reflection regions 32 is shaped such that each of the light beams reflected therefrom is inclined, and advances in a direction toward the lamp axis (A).

Landscapes

  • 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)
EP11152854A 2011-02-01 2011-02-01 Lampe à diode électroluminescente réfléchissante Withdrawn EP2481971A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11152854A EP2481971A1 (fr) 2011-02-01 2011-02-01 Lampe à diode électroluminescente réfléchissante

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11152854A EP2481971A1 (fr) 2011-02-01 2011-02-01 Lampe à diode électroluminescente réfléchissante

Publications (1)

Publication Number Publication Date
EP2481971A1 true EP2481971A1 (fr) 2012-08-01

Family

ID=44259695

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11152854A Withdrawn EP2481971A1 (fr) 2011-02-01 2011-02-01 Lampe à diode électroluminescente réfléchissante

Country Status (1)

Country Link
EP (1) EP2481971A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014048795A1 (fr) * 2012-09-27 2014-04-03 Osram Opto Semiconductors Gmbh Module d'éclairage annulaire
WO2014048896A1 (fr) * 2012-09-27 2014-04-03 Osram Opto Semiconductors Gmbh Dispositif à composants optoélectroniques, procédé de fabrication d'un dispositif à composants optoélectroniques et procédé de fonctionnement d'un dispositif à composants optoélectroniques
WO2021165174A1 (fr) * 2020-02-18 2021-08-26 Signify Holding B.V. Chambre de mélange de lumière et luminaire

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070115656A1 (en) * 2005-11-24 2007-05-24 Industrial Technology Research Institute Illumination module
EP1826474A1 (fr) * 2006-02-22 2007-08-29 Optics Lite S.r.L. Projecteur optique avec source lumineuse à DEL radiale
US20080225541A1 (en) * 2007-03-14 2008-09-18 Koito Manufacturing Co., Ltd. Vehicle lamp
WO2008148423A1 (fr) * 2007-06-05 2008-12-11 Osram Gesellschaft mit beschränkter Haftung Reflecteur pour une lampe
US20090185386A1 (en) * 2008-01-21 2009-07-23 Jiahn-Chang Wu Reflection lamp
US20090323338A1 (en) * 2008-06-16 2009-12-31 Light Prescriptions Innovators, Inc. Multi-reflector LED light source with cylindrical heat sink

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070115656A1 (en) * 2005-11-24 2007-05-24 Industrial Technology Research Institute Illumination module
EP1826474A1 (fr) * 2006-02-22 2007-08-29 Optics Lite S.r.L. Projecteur optique avec source lumineuse à DEL radiale
US20080225541A1 (en) * 2007-03-14 2008-09-18 Koito Manufacturing Co., Ltd. Vehicle lamp
WO2008148423A1 (fr) * 2007-06-05 2008-12-11 Osram Gesellschaft mit beschränkter Haftung Reflecteur pour une lampe
US20090185386A1 (en) * 2008-01-21 2009-07-23 Jiahn-Chang Wu Reflection lamp
TW200933075A (en) 2008-01-21 2009-08-01 Jiahn-Chang Wu Reflection type lamp
US20090323338A1 (en) * 2008-06-16 2009-12-31 Light Prescriptions Innovators, Inc. Multi-reflector LED light source with cylindrical heat sink

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014048795A1 (fr) * 2012-09-27 2014-04-03 Osram Opto Semiconductors Gmbh Module d'éclairage annulaire
WO2014048896A1 (fr) * 2012-09-27 2014-04-03 Osram Opto Semiconductors Gmbh Dispositif à composants optoélectroniques, procédé de fabrication d'un dispositif à composants optoélectroniques et procédé de fonctionnement d'un dispositif à composants optoélectroniques
US9494295B2 (en) 2012-09-27 2016-11-15 Osram Opto Semiconductor Gmbh Ring light module
US9664342B2 (en) 2012-09-27 2017-05-30 Osram Opto Semiconductors Gmbh Optoelectronic component device, method of producing an optoelectronic component device, and method of operating an optoelectronic component device, method of operating an optoelectronic device having improved emission characteristics
WO2021165174A1 (fr) * 2020-02-18 2021-08-26 Signify Holding B.V. Chambre de mélange de lumière et luminaire
US11686437B2 (en) 2020-02-18 2023-06-27 Signify Holding B.V. Light mixing chamber and a luminaire

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