WO2014169224A1 - Réceptacle de diode électroluminescente - Google Patents

Réceptacle de diode électroluminescente Download PDF

Info

Publication number
WO2014169224A1
WO2014169224A1 PCT/US2014/033824 US2014033824W WO2014169224A1 WO 2014169224 A1 WO2014169224 A1 WO 2014169224A1 US 2014033824 W US2014033824 W US 2014033824W WO 2014169224 A1 WO2014169224 A1 WO 2014169224A1
Authority
WO
WIPO (PCT)
Prior art keywords
cavity
receptacle
light source
barrier
electrolytic capacitor
Prior art date
Application number
PCT/US2014/033824
Other languages
English (en)
Inventor
Sehat Sutardja
Original Assignee
Marvell World Trade Ltd.
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 Marvell World Trade Ltd. filed Critical Marvell World Trade Ltd.
Publication of WO2014169224A1 publication Critical patent/WO2014169224A1/fr

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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/007—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing
    • F21V23/009—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing the casing being inside the housing of the lighting device
    • 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
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • 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
    • F21V29/15—Thermal insulation
    • 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

  • Embodiments of the present disclosure relate to light emitting diodes, and more particularly to light emitting diodes in lighting receptacles.
  • LED light emitting diode
  • a primary component of LED circuitry for LED light sources is an electrolytic capacitor.
  • the performance of electrolytic capacitors is susceptible and sensitive to the ambient or surrounding temperature close to the electrolytic capacitor.
  • a temperature differential of merely a few degrees can have a significant impact on performance of the electrolytic capacitor in a LED light source. Since LED circuitry is often subject to high temperature due to the heat generated from operation of the LED, as well as by the components themselves, any adverse affect on the electrolytic capacitor caused by such high temperature will affect the effective lifespan of the LED circuitry and/or the LED itself. Therefore, it is desirable to provide an effective way to mitigate the adverse effects that result from high ambient temperature around the electrolytic capacitor due to operation of the LED light source.
  • the present disclosure provides a light source that comprises a receptacle, a light element and control circuitry for controlling the light element.
  • the control circuitry includes an electrolytic capacitor.
  • the light source further comprises a barrier within the receptacle. The barrier defines a cavity within the receptacle and the electrolytic capacitor is located within the cavity such that the barrier at least substantially encloses the electrolytic capacitor within the cavity.
  • the present disclosure also provides a light source that comprises a receptacle, a light emitting diode and control circuitry for controlling the light emitting diode.
  • the control circuitry includes an electrolytic capacitor.
  • the light source further comprises a barrier within the receptacle.
  • the barrier comprises an insulating material and defines a cavity within the receptacle.
  • the electrolytic capacitor is located within the cavity such that the barrier at least substantially encloses the electrolytic capacitor within the cavity.
  • the present disclosure also provides a method comprising providing a light source, wherein the light source comprises a receptacle, a light emitting diode, control circuitry for controlling the light emitting diode, wherein the control circuitry includes an electrolytic capacitor, and a barrier within the receptacle, wherein the barrier defines a cavity within the receptacle, and wherein the electrolytic capacitor is located within the cavity such that the barrier at least substantially encloses the electrolytic capacitor within the cavity.
  • the method further comprises operating the light source, wherein the cavity is configured to inhibit an ambient temperature of the cavity from rising due to heat generated by one or both of (i) the light emitting diode and (ii) the control circuitry.
  • FIG. 1 schematically illustrates a cross-sectional view of an example LED light source, in accordance with various embodiments.
  • FIG. 2 is a flow chart illustrating a method of operating an LED light source, in accordance with various embodiments.
  • FIG. 1 schematically illustrates a light emitting diode (LED) light source 100.
  • a first end of the LED light source 100 is configured for attachment or coupling to, for example, a circuit board (not illustrated), a power supply such as, for example, an electrical socket (not illustrated), etc., for providing power to the LED light source 100 to thereby operate the LED light source 100.
  • a second end 104 generally includes a light element in the form of a LED 106. In accordance with the various embodiments, the LED 106 may actually be located at the first end 102.
  • Control circuitry is included for operation of the LED light source 100.
  • the control circuitry generally includes one or more resistors 108, one or more inductors 110, a rectifier bridge 112 and a controller 114, e.g., a processor. More or fewer components may be included. Such components are generally well known and therefore, they will not be described further herein.
  • the control circuitry of the LED light source 100 also includes an electrolytic capacitor 116.
  • the electrolytic capacitor 116 is generally located in a mid-portion of the LED light source 100 away from the LED 106 and the rest of the control circuitry.
  • a barrier 118 is provided around the electrolytic capacitor 116 to shield or block the electrolytic capacitor 116 from heat generated by the other components of the LED light source 100, including the LED 106 and the rest of the control circuitry.
  • the barrier 118 can be made of metal or other suitable material.
  • the barrier 118 generally defines an internal cavity 120 in which the electrolytic capacitor 116 is located.
  • the barrier 118 is coupled to a receptacle 122 of the LED light source 100 such that the barrier 118 fully encloses or substantially encloses the electrolytic capacitor 116 within the receptacle 122.
  • the receptacle 122 of the LED light source 100 includes openings 124 in the form of, for example, holes or slits, defined within the receptacle 122.
  • the openings 124 allow for heat within the cavity 120 defined by the barrier 118 to escape from the cavity 120, thereby keeping the ambient temperature around the electrolytic capacitor 116 lower.
  • the barrier 118 is made of an insulating material. In accordance with other embodiments, the barrier 118 includes any sturdy type of material and is coated with an insulating material or includes an insulating material attached thereto.
  • the barrier 118 can block some or all of the heat generated by the LED 106 and/or the control circuitry from entering the cavity 120 to thereby help keep the ambient temperature of the cavity 120 lower and thereby keeping the ambient temperature around the electrolytic capacitor 116 lower.
  • the barrier 118 is made of a thermally conductive material to thereby allow heat within the LED light source 100 to easily pass through the barrier 118 into the cavity 120.
  • the heat will generally pass through the openings 124 defined within the receptacle 122 of the LED light source 100 to thereby help keep the ambient temperature of the cavity 120 lower and thereby keeping the ambient temperature around the electrolytic capacitor 116 lower.
  • the receptacle 122 of the LED light source 100 is made of a thermally conductive material to thereby allow heat to pass out of the LED light source 100 through the receptacle 122 of the LED light source 100.
  • the openings 124 may not be included if desired.
  • the heat within the cavity 120 will generally pass through the receptacle 122 of the LED light source 100 to thereby help keep the ambient temperature of the cavity 120 lower and thereby keeping the ambient temperature around the electrolytic capacitor 116 lower.
  • the receptacle 122 of the LED light source 100 may be a thermally conductive material to allow heat to escape from the LED light source 100 through the receptacle 122 and the barrier 118 may be made of an insulating material or a thermally conductive material depending on the application.
  • various materials for the barrier 118 and/or the receptacle 122 can be utilized with or without openings 124 defined in the LED light source's receptacle 122.
  • the light source 100 may comprise more components that have not been described for simplicity and clarity.
  • the light source 100 may include a lens or cover (not illustrated) at the end 104 that encloses the receptacle 122 and thereby encloses the various elements of the light source 100 within the receptacle 122.
  • the present disclosure is applicable to LED light sources that are used with electronic devices, light bulbs, etc. The present disclosure may also be applicable to other light sources.
  • FIG. 2 is a flow chart illustrating an example method 200 of operating an LED light source, for example, LED light source 100.
  • a light source is provided, wherein the light source comprises a receptacle, a light emitting diode, control circuitry for controlling the light emitting diode, wherein the control circuitry includes an electrolytic capacitor, and a barrier within the receptacle, wherein the barrier defines a cavity within the receptacle, and wherein the electrolytic capacitor is located within the cavity such that the barrier at least substantially encloses the electrolytic capacitor within the cavity.
  • the light source is operated, wherein the cavity is configured to inhibit an ambient temperature of the cavity from rising due to heat generated by one or both of (i) the light emitting diode and (ii) the control circuitry.
  • embodiments of the present disclosure provide for a structure that fully or substantially encloses an electrolytic capacitor of an LED light source.
  • the electrolytic capacitor is shielded from most, if not all, of the heat generated by the remaining LED circuitry or the LED.
  • the ambient temperature in the immediate vicinity surrounding the electrolytic capacitor is reduced.
  • the performance of the electrolytic capacitor is thus improved which, in turn, extends the effective lifespan of the LED circuitry and/or the LED, and thereby the LED light source.
  • the description may use perspective-based descriptions such as up/down, over/under, and/or, or top/bottom. Such descriptions are merely used to facilitate the discussion and are not intended to restrict the application of embodiments described herein to any particular orientation.
  • the phrase “A/B” means A or B.
  • the phrase “A and/or B” means “(A), (B), or (A and B).”
  • the phrase “at least one of A, B, and C” means “(A), (B), (C), (A and B), (A and C), (B and C), or (A, B and C).”
  • the phrase “(A)B” means "(B) or (AB)" that is, A is an optional element.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

Selon des modes de réalisation, la présente invention porte sur une source de lumière qui comporte un réceptacle, un élément de lumière et une circuiterie de commande pour commander l'élément de lumière. La circuiterie de commande comprend un condensateur électrolytique. La source de lumière comporte en outre une barrière à l'intérieur du réceptacle. La barrière définit une cavité à l'intérieur du réceptacle et le condensateur électrolytique est situé à l'intérieur de la cavité de telle sorte que la barrière entoure au moins sensiblement le condensateur électrolytique à l'intérieur de la cavité.
PCT/US2014/033824 2013-04-11 2014-04-11 Réceptacle de diode électroluminescente WO2014169224A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361810972P 2013-04-11 2013-04-11
US61/810,972 2013-04-11

Publications (1)

Publication Number Publication Date
WO2014169224A1 true WO2014169224A1 (fr) 2014-10-16

Family

ID=50687724

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/033824 WO2014169224A1 (fr) 2013-04-11 2014-04-11 Réceptacle de diode électroluminescente

Country Status (1)

Country Link
WO (1) WO2014169224A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019133765A (ja) * 2018-01-29 2019-08-08 パナソニックＩｐマネジメント株式会社 照明器具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008218424A (ja) * 2008-04-15 2008-09-18 Osram-Melco Ltd 電球形蛍光ランプ
CN102095174A (zh) * 2010-11-11 2011-06-15 陕西科技大学 易损件分离的led驱动电源
US20120161630A1 (en) * 2010-05-24 2012-06-28 Panasonic Corporation Lamp and lighting apparatus
US20120212960A1 (en) * 2009-07-06 2012-08-23 Rodriguez Edward T Cooling solid state high-brightness white-light illumination sources

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008218424A (ja) * 2008-04-15 2008-09-18 Osram-Melco Ltd 電球形蛍光ランプ
US20120212960A1 (en) * 2009-07-06 2012-08-23 Rodriguez Edward T Cooling solid state high-brightness white-light illumination sources
US20120161630A1 (en) * 2010-05-24 2012-06-28 Panasonic Corporation Lamp and lighting apparatus
CN102095174A (zh) * 2010-11-11 2011-06-15 陕西科技大学 易损件分离的led驱动电源

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 201151, Derwent World Patents Index; AN 2011-J15708, XP002728786 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019133765A (ja) * 2018-01-29 2019-08-08 パナソニックＩｐマネジメント株式会社 照明器具
JP7065325B2 (ja) 2018-01-29 2022-05-12 パナソニックＩｐマネジメント株式会社 照明器具

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