WO2016065393A1 - Ensemble d'éclairage amélioré - Google Patents

Ensemble d'éclairage amélioré Download PDF

Info

Publication number
WO2016065393A1
WO2016065393A1 PCT/AU2015/000640 AU2015000640W WO2016065393A1 WO 2016065393 A1 WO2016065393 A1 WO 2016065393A1 AU 2015000640 W AU2015000640 W AU 2015000640W WO 2016065393 A1 WO2016065393 A1 WO 2016065393A1
Authority
WO
WIPO (PCT)
Prior art keywords
lighting
wall
fins
assembly
emitting diodes
Prior art date
Application number
PCT/AU2015/000640
Other languages
English (en)
Inventor
Roy Morris JESSOP
Original Assignee
Jessop Roy Morris
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
Priority claimed from AU2014904298A external-priority patent/AU2014904298A0/en
Application filed by Jessop Roy Morris filed Critical Jessop Roy Morris
Publication of WO2016065393A1 publication Critical patent/WO2016065393A1/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
    • 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
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L14/00—Electric lighting devices without a self-contained power source, e.g. for mains connection
    • F21L14/04—Electric lighting devices without a self-contained power source, e.g. for mains connection carried on wheeled supports
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/22—Adjustable mountings telescopic
    • 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
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/30—Light sources with three-dimensionally disposed light-generating elements on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
    • 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 lighting assemblies and, in particular, to lighting assemblies which can be used in lighting towers and which utilise light emitting diodes for illumination.
  • LED light emitting diode
  • an LED produces a narrow spectrum light by a process of electroluminescence and so, in order to produce diffused uniform light, the LED requires additional optical components, such as lenses and diffusers.
  • a desired number of such LEDs are normally grouped together in a desired mounting configuration on an electrical board when constructing LED lighting assemblies or fixtures in order to achieve a desired luminescence.
  • LED lighting assemblies As traffic lights, modern vehicle lights, building exteriors, and for many other applications where illumination and electronic signs and signals are desired.
  • LED lighting assemblies have been used in lighting towers for outdoor construction sites, such as on roads where night lighting is required, or for indoor or underground industrial sites.
  • LEDs produce more lumens per watt, and so generate less heat than other common types of lighting
  • some LED lighting assemblies may still be susceptible to burnout due to ineffective heat dissipation within the assembly. This is especially a concern for any LED lighting assembly which needs to be protected against the ingress of dust and water, or be otherwise weather- proofed, to maintain optimal lighting efficiency and life span, and so has its LEDs located within a confined space inside the assembly where there is no, or very little, natural flow of air to cool the LEDs.
  • an object of the present invention to provide an LED lighting assembly in which the LEDs are protected against the ingress of dust and water but which allows effective heat dissipation from the LEDs within the assembly.
  • a lighting assembly comprising:
  • a housing having an open top, an open bottom, an air flow passageway between the open top and the open bottom, and a light diffuser defining an outer wall of the housing
  • heat generated by the light emitting diodes when they are in use is communicated to the fins and then rises as hot air through the air flow passageway to exit the assembly through the open top, whereupon surrounding air enters the assembly through the open bottom to replace the rising hot air and cool the fins, whereby the temperature of the light emitting diodes is moderated.
  • the outer wall of the housing is cylindrical, and the mounting wall is a closed wall.
  • the closed wall is an octagonal wall, although the closed wall may be of other suitable wall shapes in other embodiments, such as a circular wall or a hexagonal wall.
  • the fins extend radially into the passageway and are tapered.
  • the mounting wall is polygonal and comprises a plurality of planar wall portions, each wall portion having connected thereto a planar electrical board of light emitting diodes.
  • a lighting tower comprising a base, a mast extending upwardly from the base and having an upper end at which is connected a lighting head, the lighting head comprising one or more of the aforementioned lighting assemblies.
  • the base is mounted to a trailer.
  • the mast is rotatable and/or telescopically
  • Fig. 1 is an isometric view of a lighting assembly according to a preferred embodiment of the present invention.
  • Fig. 2 is a view similar to that of Fig. 1 but in which a lower part of the light diffuser of the assembly has been cut away to show a first region of LEDs.
  • Fig. 3 is a view similar to that of Fig.1 but in which an upper part of the light diffuser of the assembly has been cut away to show a second region of LEDs.
  • Fig. 4 is a top view of the lighting assembly of Fig. 1 .
  • Fig. 5 is a sectional side view through A-A in Fig. 4.
  • Fig. 6 is a bottom view of the lighting assembly of Fig. 1 .
  • Fig. 7 is an exploded isometric view of the lighting assembly of Fig. 1 showing all of the component parts that are interconnectable.
  • Fig. 8 is a top view of the lighting assembly of Fig. 1 in which the top collar has been removed to show the communication of heat generated by the LEDs, when they are in use, to the fins.
  • Fig. 9 is a side view of the lighting assembly of Fig. 1 showing the direction of the exit from the lighting assembly of hot air through the open top and the direction of the entry into the lighting assembly of surrounding air through the open bottom to replace the hot air rising through the air flow passageway from the heat communicated to the fins and generated by the LEDs when they are in use.
  • Fig. 10 is an isometric view of the lighting assembly of Fig. 1 showing a similar direction to that of Fig. 9 of hot air exiting from the lighting assembly and of surrounding air entering into the lighting assembly.
  • Fig. 1 1 is an exploded isometric view of a lighting assembly according to another preferred embodiment of the present invention showing all of the component parts that are interconnectable.
  • Fig. 12 is an isometric view of a lighting tower according to yet another preferred embodiment of the present invention mounted to a trailer, with a mast of the lighting tower in a telescopically retracted configuration and supporting a lighting head which includes three lighting assemblies of Fig. 1.
  • Fig. 13 is a view similar to that of Fig. 12 but in which the mast of the lighting tower is in a partially telescopically extended configuration and the mast has been rotated to thereby reposition the lighting assemblies.
  • the lighting assembly 0 shown in Figs. 1 to 10 has a housing 2 with an open top 14, an open bottom 16 and an air flow passageway 18 between the open top 14 and the open bottom 16. There is a light diffuser 20 which defines an outer wall of the housing 12.
  • the lighting assembly 10 also has a mounting wall 22 located inwardly of, and spaced apart from, the light diffuser 20.
  • a plurality of light emitting diodes (LEDs) 24 is mounted on an outward side of the mounting wall facing the light diffuser 20.
  • the LEDs 24 are electrically connected to a power source, and, in this embodiment, are rated for operation at 640 watts and at between
  • the fins 26 are in thermal communication with the LEDs 24.
  • passageway 18 serve as a heat sink, and the process of convection is used to control heat build-up and moderate the temperature of the LEDs 24.
  • the light diffuser 20 of the housing 12 is cylindrical and is formed of high density polyethylene. In other embodiments, the light diffuser is formed of other suitable material.
  • the mounting wall 22 is, in this embodiment, a closed wall (also known as an endless wall) and, more particularly, is an octagonal wall, although the closed wall may be of other suitable wall shapes in other embodiments, such as a circular wall (or cylindrical), a hexagonal wall, or other suitable polygonal wall shapes.
  • the fins 26 extend radially into the passageway 18 and are tapered. Connected to each of the eight planar wall portions of the octagonal mounting wall 22 is a planar electrical board 30 of LEDs 24.
  • the octagonal mounting wall 22 to which the LEDs 24 are mounted is made up of four interconnected wall parts 32, 34, 36, 38, each wall part having two planar wall portions.
  • the wall parts are sealingly connected to each other at their respective vertical side edges by engaging clips 40.
  • the top and bottom edges of each wall part are sealingly connected to respective top and bottom collars 42, 44 by suitable fasteners.
  • the bottom collar 44 is connected to a base collar part 48.
  • the collars 42, 44 and base collar part 48 may be made of plastic.
  • fins 26 mounted to each of the four wall parts, and they are formed integrally together by an aluminium extrusion process. Alternatively, a die cast process may be used, and there may be a different number of fins.
  • the octagonal mounting wall 22 to which the LEDs 24 are mounted is made as a single, one piece, aluminium extrusion instead of as, but with similar dimensions to, the four interconnectable wall parts 32, 34, 36, 38 of the embodiment of lighting assembly shown in Figs. 1 to 10.
  • Features of the lighting assembly shown exploded in Fig. 1 1 which are similar to, or like, features of the lighting assembly 10, are provided with like numerals.
  • each lighting assembly 10 there are one or more lighting assemblies 10 arranged as part of a lighting tower.
  • the or each lighting assembly can be initially fitted to an original lighting tower or can be retrofitted to an existing lighting tower.
  • the lighting tower may be mounted by a mounting structure or base to a trailer or other towable vehicle, or to a drivable vehicle, or to any other supporting means (including the ground), and includes a mast, at the upper end of which is connected a lighting head which includes a desired number of the lighting assemblies 10.
  • the mast may be partly or fully rotatable (up to 360°) and/or telescopically extendible.
  • Figs. 12 and 13 show a lighting tower 60 mounted to a trailer 62.
  • a mast 64 of the lighting tower 60 is shown in a telescopically retracted configuration in Fig. 12.
  • the mast 64 supports a lighting head 66 which includes three lighting assemblies 10 which are in a normally non-operational or travel position in Fig. 12.
  • the mast 64 of the lighting tower 60 is shown in a partially telescopically extended
  • a lighting tower to which is operably fitted, say, four lighting assemblies 10 produces a total light output of 350,000 lumens before losses through each of the diffusers, and from 225,000 to 300,000 lumens after passing through each of the diffusers.
  • the four lighting assemblies operate at about 2.6 kW.
  • the light passing outwardly through the diffusers represents a non-blinding 360° (non-directional) light source, and the area immediately below the four lighting assemblies is also fully illuminated by down beams from each of the lighting assemblies.
  • Illumination levels can be adjusted with a three or a four position dimmer switch.
  • Each of the lighting assemblies 10 of the lighting tower is weather proof and durable and has an IP66 rating for the prevention of ingress of dust and water to the electrical and lighting components of the lighting assemblies.
  • the cooling air rising through the passageway 18 does not come into contact with the LEDs or the diffuser.
  • the absence of any ingress of dust or water ensures optimal lighting efficiency and life span.
  • the present invention has industrial applicability in the area of lighting towers for outdoor construction sites, such as on roads where night lighting is required, or for indoor or underground industrial sites.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

La présente invention concerne un ensemble d'éclairage (10) qui a un boîtier (12) comprenant : une partie supérieure ouverte (14), une partie inférieure ouverte (16), un passage d'écoulement d'air (18) entre la partie supérieure ouverte et la partie inférieure ouverte, et un diffuseur de lumière (20) définissant une paroi extérieure du boîtier. Une paroi de montage (22) est située vers l'intérieur du diffuseur de lumière et est écartée de ce dernier. Des diodes électroluminescentes (24) sont montées sur un côté extérieur de la paroi de montage faisant face au diffuseur de lumière et sont électriquement connectées à une source d'énergie. Des ailettes thermoconductrices (26) s'étendent dans le passage d'écoulement d'air (18) depuis un côté intérieur de la paroi de montage. Les ailettes (26) sont en communication thermique avec les diodes électroluminescentes (24). La chaleur engendrée par les diodes électroluminescentes lorsqu'elles sont utilisées est communiquée aux ailettes et s'élève ensuite sous forme d'air chaud à travers le passage d'écoulement d'air pour sortir de l'ensemble par la partie supérieure ouverte. L'air environnant pénètre dans l'ensemble par la partie inférieure ouverte pour remplacer l'air chaud montant et refroidir les ailettes, moyennant quoi la température des diodes électroluminescentes est modérée.
PCT/AU2015/000640 2014-10-28 2015-10-27 Ensemble d'éclairage amélioré WO2016065393A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2014904298A AU2014904298A0 (en) 2014-10-28 Improved lighting assembly
AU2014904298 2014-10-28

Publications (1)

Publication Number Publication Date
WO2016065393A1 true WO2016065393A1 (fr) 2016-05-06

Family

ID=55856257

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2015/000640 WO2016065393A1 (fr) 2014-10-28 2015-10-27 Ensemble d'éclairage amélioré

Country Status (1)

Country Link
WO (1) WO2016065393A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106641883A (zh) * 2016-12-23 2017-05-10 台龙电子（昆山）有限公司 一种内置有led灯条的发光机构
CN109377774A (zh) * 2018-09-29 2019-02-22 扬州市法马智能设备有限公司 一种人行横道交通信号灯

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004070266A1 (fr) * 2003-02-05 2004-08-19 Obelux Oy Feu d'obstacle aerien a corps tubulaire
JP2010118325A (ja) * 2008-11-12 2010-05-27 Tousui Ltd Ｌｅｄ照明灯
US20110089838A1 (en) * 2009-10-20 2011-04-21 Cree Led Lighting Solutions, Inc. Heat sinks and lamp incorporating same
US20120268936A1 (en) * 2011-04-19 2012-10-25 Cree, Inc. Heat sink structures, lighting elements and lamps incorporating same, and methods of making same
JP2013020953A (ja) * 2011-06-17 2013-01-31 Light Boy Co Ltd バルーン型投光機
KR101368205B1 (ko) * 2013-10-29 2014-03-12 안철정 엘이디 조명등
US8766815B2 (en) * 2011-08-30 2014-07-01 Vincenzo Di Giovine Light signaling device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004070266A1 (fr) * 2003-02-05 2004-08-19 Obelux Oy Feu d'obstacle aerien a corps tubulaire
JP2010118325A (ja) * 2008-11-12 2010-05-27 Tousui Ltd Ｌｅｄ照明灯
US20110089838A1 (en) * 2009-10-20 2011-04-21 Cree Led Lighting Solutions, Inc. Heat sinks and lamp incorporating same
US20120268936A1 (en) * 2011-04-19 2012-10-25 Cree, Inc. Heat sink structures, lighting elements and lamps incorporating same, and methods of making same
JP2013020953A (ja) * 2011-06-17 2013-01-31 Light Boy Co Ltd バルーン型投光機
US8766815B2 (en) * 2011-08-30 2014-07-01 Vincenzo Di Giovine Light signaling device
KR101368205B1 (ko) * 2013-10-29 2014-03-12 안철정 엘이디 조명등

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106641883A (zh) * 2016-12-23 2017-05-10 台龙电子（昆山）有限公司 一种内置有led灯条的发光机构
CN109377774A (zh) * 2018-09-29 2019-02-22 扬州市法马智能设备有限公司 一种人行横道交通信号灯

Similar Documents

Publication Publication Date Title
US7607802B2 (en) LED lamp instantly dissipating heat as effected by multiple-layer substrates
US7862204B2 (en) LED light
JP5625203B2 (ja) ブロック組立構造を有するｌｅｄ照明装置
US7458706B1 (en) LED lamp with a heat sink
EP3214358B1 (fr) Projecteur à del
US8668354B2 (en) Low-glare LED-based lighting unit
US9651238B2 (en) Thermally dissipated lighting system
US10132487B2 (en) Luminaire heat sink
RU2638821C2 (ru) Светодиодная лампа для уличного освещения
KR100923435B1 (ko) 적층 방열판의 공냉식 방열 통기공간부가 형성된 ｌｅｄ 조명등
KR101544495B1 (ko) 엘이디 조명장치
KR101040943B1 (ko) Ｌｅｄ 조명장치
WO2016065393A1 (fr) Ensemble d'éclairage amélioré
KR101086893B1 (ko) 엘이디를 이용한 가로등
KR100978864B1 (ko) 발광다이오드를 이용한 판형 가로등기구
KR102237370B1 (ko) 공기구멍을 구비한 led 가로등 장치
CN102927509B (zh) 一种嵌墙灯
KR102178898B1 (ko) 공기 순환식 led 조명등기구
CN102230604B (zh) 一种led灯模块式散热器
KR101505830B1 (ko) 엘이디 램프조립체
KR20110098085A (ko) 자연산 공기 공냉식 방열 통기채널이 형성된 엘이디 조명등
CN202082745U (zh) 一种led路灯
KR20110028705A (ko) 엘이디 가로등
KR20100122615A (ko) 누전방지기능을 갖춘 경관 등기구
KR101581458B1 (ko) 옥외용 엘이디 조립체

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15854346

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15854346

Country of ref document: EP

Kind code of ref document: A1