EP1030099A2 - Beleuchtungseinrichtung - Google Patents

Beleuchtungseinrichtung Download PDF

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Publication number
EP1030099A2
EP1030099A2 EP99122940A EP99122940A EP1030099A2 EP 1030099 A2 EP1030099 A2 EP 1030099A2 EP 99122940 A EP99122940 A EP 99122940A EP 99122940 A EP99122940 A EP 99122940A EP 1030099 A2 EP1030099 A2 EP 1030099A2
Authority
EP
European Patent Office
Prior art keywords
housings
leds
light
shell
plate
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Withdrawn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
EP99122940A
Other languages
English (en)
French (fr)
Other versions
EP1030099A3 (de
Inventor
Giancarlo Bellinzona
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.)
Velamp Sicurezza Srl
Original Assignee
Velamp Sicurezza Srl
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 Velamp Sicurezza Srl filed Critical Velamp Sicurezza Srl
Publication of EP1030099A2 publication Critical patent/EP1030099A2/de
Publication of EP1030099A3 publication Critical patent/EP1030099A3/de
Withdrawn legal-status Critical Current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
    • 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
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional 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 refers in general to a lighting device.
  • Said device is particularly suitable for use in the field of safety, to provide signal lights on roads, motorways, railways, ports and airports.
  • Said known light devices generally comprise a hollow shell inside which a halogen lamp is positioned.
  • the luminous efficiency of the light source must be very high and must exceed threshold levels set by international standards. Consequently, halogen lamps are used as the light source but they dissipate too much electrical power, conflicting with energy saving requirements.
  • the object of the invention is to eliminate said drawbacks, providing a lighting device that is efficient, economical and long lasting.
  • a surface having a plurality of concave seats, substantially paraboloidal, ellipsoidal or of another similar shape, is provided.
  • Said seats are coated with a reflecting material and a light source is inserted inside each of them, in a position substantially near the focus of the paraboloid.
  • the luminous efficiency achieved is so high that in place of halogen lamps LEDs (light emitting diodes) can advantageously be used as the light source.
  • LEDs have a considerably lower electrical power dissipation than halogen lamps.
  • a lighting device according to the invention using LEDs, it is possible to obtain the same luminous efficiency as a device of the prior art with halogen lamps, with electrical power consumption reduced by about one-third.
  • the lighting device according to the invention using LEDs as the light source, requires a considerably smaller number of maintenance and LED replacement operations.
  • a lighting device is denoted as a whole by reference numeral 1.
  • the device 1 comprises a shell 2 or outer casing, a plate 3 supporting light sources 4, a body 5 comprising a plurality of housings 6 for the light sources 4 and a light-transparent cover 7.
  • the shell 2 preferably made of plastic material, has a substantially frusto-conical shape with a large concave seat 8.
  • Protruding from the outer edge 10 are fins 12 (one visible in Figure 1), having respective holes 13 able to receive screw means for securing the cover 7.
  • a through hole for passage of an electrical supply cable 14 is provided in the shell 2.
  • Securing means (not shown) can be provided to block the shell 2 on a support.
  • the plate 3 is substantially shaped like a circular disc with a slightly smaller diameter than the inner rim 11 of the shell 2, in order to be able to fit inside the cavity 8 of the shell.
  • the plate 3 is preferably made by means of a silicon printed circuit board, so as to allow electrical connection tracks for the light sources 4 to be formed
  • An electrical connector element (not shown) able to house the electrical supply cable 14 is connected to the plate 3.
  • the light sources 4 are LEDs (light emitting diodes).
  • the LEDs 4 comprise a rectangular LED supporting plate 15, supported by four pins fixed to the plate 3 and acting as electrical connections.
  • the LEDs 4 can be series connected in groups of three LEDs and then the groups of three LEDs are parallel connected to one another. In this manner the supply voltage, to allow lighting of the LEDs, is given by the bias voltage of a single LED multiplied by three.
  • the lighting device according to the invention therefore, can be supplied with direct current, even by means of a vehicle battery, with a supply voltage of 12V - 24V DC.
  • the device 1 can also be connected to the electrical network by providing an AC/DC transformer from alternating to direct current.
  • the plate 3 has four through holes 16, suitable to receive the screws 17 that screw into the body 5 to secure the plate 3 to the body 5.
  • the body 5, seen in a plan view ( Figure 2), is substantially circular in shape, with a greater diameter than the diameter of the inner rim 11 and smaller than the diameter of the outer rim 10 of the shell 2. It has an annular shaped outer rim 18 that engages fixedly in the cavity 9 of the shell 2. In the rim 18 and/or in the cavity 9, sealing means are provided to ensure a better seal between the body 5 and the shell 2.
  • each housing 6 has a concave paraboloid shape, so as to form a cavity 21.
  • Each housing 6 ends in a base 19 that forms a parallelepiped-shaped cavity on the inside, communicating with the cavity 21 by means of a circular hole 22.
  • each base 19 abuts against the surface of the plate 3 and the plates 15 of the LED 4 house perfectly inside the cavity 20, so that the LED 4 protrudes from the hole 22 and is situated in a position substantially close to the focus of the surface of the paraboloidal housings 6.
  • Figure 2 shows, purely by way of example, a possible arrangement of the housings 6 of the body 5.
  • the body 5 comprises two housings 6 arranged in a central position, around which is situated a first group of eight housings 6 equally spaced along a first circumference.
  • Around said first group of housings is situated a second group of fifteen housings evenly spaced along a second circumference with a larger diameter than that of the first.
  • Around said second group of housings is situated a third group of twenty housings evenly spaced along a third circumference with a greater diameter than that of the second circumference.
  • the body 5 can be manufactured, for example, by moulding of plastic material, such as an ABS (acrylonitrile butadiene styrene) polymer.
  • plastic material such as an ABS (acrylonitrile butadiene styrene) polymer.
  • ABS acrylonitrile butadiene styrene
  • the cover 7 is substantially circular in shape with a diameter substantially equal to the diameter of the outer rim 10 of the shell 2, so that it abuts against said edge.
  • the cover 7 has two protruding fins 25 with respective holes 26 intended to be aligned with holes 13 of fins 12 of shell 2 to accommodate securing means.
  • the cover 7 is made of light-transparent material and can preferably be made of plastic material with a circular surface 27, ground to avoid the dazzling effect of the light emitted by the light sources 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vehicle Body Suspensions (AREA)
  • Polarising Elements (AREA)
  • Seal Device For Vehicle (AREA)
EP99122940A 1999-02-17 1999-11-18 Beleuchtungseinrichtung Withdrawn EP1030099A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999MI000315A IT1308709B1 (it) 1999-02-17 1999-02-17 Dispositivo di illuminazione
ITMI990315 1999-02-17

Publications (2)

Publication Number Publication Date
EP1030099A2 true EP1030099A2 (de) 2000-08-23
EP1030099A3 EP1030099A3 (de) 2001-11-28

Family

ID=11381923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99122940A Withdrawn EP1030099A3 (de) 1999-02-17 1999-11-18 Beleuchtungseinrichtung

Country Status (3)

Country Link
EP (1) EP1030099A3 (de)
CA (1) CA2298812A1 (de)
IT (1) IT1308709B1 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002021043A1 (de) * 2000-09-06 2002-03-14 Vossloh-Wustlich Opto Gmbh & Co. Kg Beleuchtungselement
WO2002023082A1 (en) * 2000-09-14 2002-03-21 Power Signal Technologies, Inc. Solid state traffic light apparatus having homogenous light source
EP1697685A1 (de) * 2003-12-11 2006-09-06 Dialight Corporation Leuchtdioden (leds) mit hoher strahlungsleistung verwendende reflektoranordnungen
JP2010055938A (ja) * 2008-08-28 2010-03-11 Toshiba Lighting & Technology Corp 照明器具
EP2194316A1 (de) * 2008-12-05 2010-06-09 John Se-Kit Yuen Elektrische Lampenvorrichtung
US7789536B2 (en) 2005-11-21 2010-09-07 Koninklijke Philips Electronics N.V. Lighting device
US7993033B2 (en) 2008-05-22 2011-08-09 Toshiba Lighting & Technology Corporation Reflector and lighting apparatus comprising reflector
CN102261569A (zh) * 2010-05-24 2011-11-30 艾迪光电（杭州）有限公司 一种发光二极管灯具
US8128263B2 (en) 2008-09-16 2012-03-06 Toshiba Lighting & Technology Corporation Light source unit and lighting apparatus having light-emitting diodes for light source
US8491163B2 (en) 2009-09-25 2013-07-23 Toshiba Lighting & Technology Corporation Lighting apparatus
US8545051B2 (en) 2008-05-30 2013-10-01 Toshiba Lighting & Technology Corporation Lighting apparatus with heat conductive substrate
CN104180305A (zh) * 2013-05-21 2014-12-03 海洋王（东莞）照明科技有限公司 配光结构及其led灯具

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11172334B2 (en) 2019-02-11 2021-11-09 Arizona Board Of Regents On Behalf Of Arizona State University Hyper-precise positioning and communications system and network
US12050283B2 (en) 2019-11-04 2024-07-30 Arizona Board Of Regents On Behalf Of Arizona State University Estimation and tracking of position information in a distributed radio frequency (RF) communications system
US11988735B2 (en) 2019-11-04 2024-05-21 Arizona Board Of Regents On Behalf Of Arizona State University Position information estimation in a distributed radio frequency (RF) communications system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2563929B3 (fr) * 1984-05-04 1986-09-12 Thery Hindrick Sa Panneau avertisseur lumineux
FR2613858B1 (fr) * 1987-04-09 1994-04-01 Garbarini Sa A Element de feu de signalisation de circulation routiere
US5580156A (en) * 1994-09-27 1996-12-03 Koito Manufacturing Co., Ltd. Marker apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002021043A1 (de) * 2000-09-06 2002-03-14 Vossloh-Wustlich Opto Gmbh & Co. Kg Beleuchtungselement
WO2002023082A1 (en) * 2000-09-14 2002-03-21 Power Signal Technologies, Inc. Solid state traffic light apparatus having homogenous light source
EP1697685A1 (de) * 2003-12-11 2006-09-06 Dialight Corporation Leuchtdioden (leds) mit hoher strahlungsleistung verwendende reflektoranordnungen
EP1697685A4 (de) * 2003-12-11 2007-01-10 Dialight Corp Leuchtdioden (leds) mit hoher strahlungsleistung verwendende reflektoranordnungen
US7281818B2 (en) 2003-12-11 2007-10-16 Dialight Corporation Light reflector device for light emitting diode (LED) array
US7789536B2 (en) 2005-11-21 2010-09-07 Koninklijke Philips Electronics N.V. Lighting device
US7993033B2 (en) 2008-05-22 2011-08-09 Toshiba Lighting & Technology Corporation Reflector and lighting apparatus comprising reflector
US8556460B2 (en) 2008-05-30 2013-10-15 Toshiba Lighting & Technology Corporation Lighting apparatus and light-emitting element mounting substrate having stress absorbing means
US9303855B2 (en) 2008-05-30 2016-04-05 Toshiba Lighting & Technology Corporation Light emitting module having heat conductive substrate
US8545051B2 (en) 2008-05-30 2013-10-01 Toshiba Lighting & Technology Corporation Lighting apparatus with heat conductive substrate
US8668355B2 (en) 2008-05-30 2014-03-11 Toshiba Lightning & Technology Corporation Light emitting module having heat conductive substrate
US9410685B2 (en) 2008-05-30 2016-08-09 Toshiba Lighting & Technology Corporation Light emitting module having heat conductive substrate
US9279575B2 (en) 2008-05-30 2016-03-08 Kabushiki Kaisha Toshiba Light emitting module having heat conductive substrate
CN101660677B (zh) * 2008-08-28 2011-05-18 东芝照明技术株式会社 使用led作为光源的照明器具
EP2177825A1 (de) * 2008-08-28 2010-04-21 Toshiba Lighting & Technology Corporation Beleuchtungsvorrichtung mit lichtemittierenden Dioden für eine Lichtquelle
JP2010055938A (ja) * 2008-08-28 2010-03-11 Toshiba Lighting & Technology Corp 照明器具
US8128263B2 (en) 2008-09-16 2012-03-06 Toshiba Lighting & Technology Corporation Light source unit and lighting apparatus having light-emitting diodes for light source
EP2194316A1 (de) * 2008-12-05 2010-06-09 John Se-Kit Yuen Elektrische Lampenvorrichtung
US8491163B2 (en) 2009-09-25 2013-07-23 Toshiba Lighting & Technology Corporation Lighting apparatus
CN102261569A (zh) * 2010-05-24 2011-11-30 艾迪光电（杭州）有限公司 一种发光二极管灯具
CN104180305A (zh) * 2013-05-21 2014-12-03 海洋王（东莞）照明科技有限公司 配光结构及其led灯具

Also Published As

Publication number Publication date
ITMI990315A1 (it) 2000-08-17
IT1308709B1 (it) 2002-01-10
EP1030099A3 (de) 2001-11-28
CA2298812A1 (en) 2000-08-17

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