WO2005001330A1 - Flight obstacle light provided with lens structure - Google Patents

Flight obstacle light provided with lens structure Download PDF

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Publication number
WO2005001330A1
WO2005001330A1 PCT/FI2004/000398 FI2004000398W WO2005001330A1 WO 2005001330 A1 WO2005001330 A1 WO 2005001330A1 FI 2004000398 W FI2004000398 W FI 2004000398W WO 2005001330 A1 WO2005001330 A1 WO 2005001330A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
flight obstacle
light source
sources
fitted
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.)
Ceased
Application number
PCT/FI2004/000398
Other languages
French (fr)
Inventor
Vesa Laakso
Jyrki Sipinen
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.)
OBELUX Oy
Original Assignee
OBELUX Oy
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 OBELUX Oy filed Critical OBELUX Oy
Publication of WO2005001330A1 publication Critical patent/WO2005001330A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F1/00—Ground or aircraft-carrier-deck installations
    • B64F1/18—Visual or acoustic landing aids
    • B64F1/20—Arrangement of optical beacons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D2203/00—Aircraft or airfield lights using LEDs
    • 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
    • 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 horizontally omnidirectional flight obstacle light comprising a body and one or more light emitting semiconductor light source units, such as LEDs (Light Emitting Diodes), connected on circuit boards placed one over the other on the body.
  • LEDs Light Emitting Diodes
  • WO specification 97/29320 discloses a flight obstacle light operated by a low direct-current voltage, designed to warn aircraft about flight obstacles, such as tall buildings, radio towers and chimneys.
  • the light source consists of LED (Light Emitting Diode) light sources mounted e.g. on circuit boards placed one upon the other, on their circular circumference so as to achieve a desired illumination pattern as well as a sufficient luminous intensity, at least 10 cd.
  • the flight obstacle light produces a horizontally omnidirectional illumination pattern emitted at a vertical angle of at least 3°.
  • Fig. 1 shows the way in which the LED light sources are placed at the edge of the circuit board in the WO specification in question.
  • prior-art flight obstacle lights a large number of semiconductor light sources are mounted side by side at the outer edge of a circular circuit board, the LEDs being mounted in a horizontal direction, so that the desired omnidirectional illumination pattern is achieved.
  • the problem with prior-art devices is that many semiconductor light sources are mounted side by side at the outer edge of a circular circuit board, the LEDs being mounted in a horizontal direction, to achieve the desired omnidirectional illumination pattern.
  • the object of the present invention is to create a new type of flight obstacle light implemented using high-power semiconductor light sources, wherein the semiconductor light sources of the light fitting can be disposed in a new way, thus making it possible to reduce the number of semiconductor light sources required.
  • the semiconductor light sources of the flight obstacle light are fitted in a vertical orientation on the circuit board, and they are provided with light directing lenses, by means of which the light of the light fitting is directed horizontally omnidirectionally as in the WO specification referred to above.
  • the present invention provides the advantage of reducing the required number of semiconductor light source components from tens of components to one or a few, depending on the luminous efficiency needed. As the number of semiconductor light sources is significantly reduced, the power consumption of the flight obstacle light is also reduced.
  • the semiconductor light sources can be placed in the middle of the circuit board, so they are e.g. better protected against mechanical damage.
  • only a few semiconductor light sources are needed, placed at a suitable distance from each other on the circuit board so that the light produced by them together is horizontally omnidirectional.
  • Fig. 3 presents a flight obstacle light implementation in side view.
  • Fig. 2a presents a semiconductor light source used in the flight obstacle light, which emits light in a vertical direction while the circuit board is in a horizontal position.
  • Fig. 2b presents a semiconductor light source provided with a lens that directs the light emitted by the semiconductor light source so that the light is radiated horizontally omnidirectionally.
  • Fig. 4 presents a flight obstacle light having a body part (1) which can be attached to a connection box (2) below it, and which has a transparent protective hood 3 covering it.
  • the body part (1) comprises an electronics part, which consists of a discoid circuit board with the light control electronics fitted on it.
  • the control electronics comprises a chopper source for supplying the required direct voltage, e.g. 48 V, to the semiconductor light sources, as well as other necessary control circuits for controlling and regulating the light.
  • Placed on the circuit board are light emitting semiconductor light sources so that a sufficient luminous efficiency, at least 10 cd, is achieved.
  • Fitted over the semiconductor light sources are lenses (4) for directing the light horizontally. This is visualized more closely in Fig.
  • the illumination pattern of the flight obstacle light thus being horizontally omnidirectional light emitted as a light beam with a vertical angle of at least 3°, but typically 10°.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)

Abstract

A flight obstacle light having a body (figure 4-1) on which is fitted an electronics part of the light for controlling the light sources, said electronics part comprising at leats one horizontal circuit board on which are fitted a light emitting semiconductor light source unit, such as a LED, Light Emitting Diode, and a lens structure for directing the light horizontally omnidirectionally (figure 4-4), and a switching unit (figure 4-2) for connecting a supply voltage to the flight obstacle light, wherein the light source or light sources of the semiconductor light source unit are fitted vertically on the circuit board and a lens/lenses directing the light horizontally is/are fitted on the light source/sources in such manner (figure 4-4 and figure 2b) that the flight obstacle light will produce the required illumination pattern.

Description

FLIGHT OBSTACLE LIGHT PROVIDED WITH LENS STRUCTURE
The present invention relates to a horizontally omnidirectional flight obstacle light comprising a body and one or more light emitting semiconductor light source units, such as LEDs (Light Emitting Diodes), connected on circuit boards placed one over the other on the body.
WO specification 97/29320 discloses a flight obstacle light operated by a low direct-current voltage, designed to warn aircraft about flight obstacles, such as tall buildings, radio towers and chimneys. In this WO specification, the light source consists of LED (Light Emitting Diode) light sources mounted e.g. on circuit boards placed one upon the other, on their circular circumference so as to achieve a desired illumination pattern as well as a sufficient luminous intensity, at least 10 cd. In the described implementation, the flight obstacle light produces a horizontally omnidirectional illumination pattern emitted at a vertical angle of at least 3°. Fig. 1 shows the way in which the LED light sources are placed at the edge of the circuit board in the WO specification in question.
In prior-art flight obstacle lights, a large number of semiconductor light sources are mounted side by side at the outer edge of a circular circuit board, the LEDs being mounted in a horizontal direction, so that the desired omnidirectional illumination pattern is achieved. The problem with prior-art devices is that many semiconductor light sources are mounted side by side at the outer edge of a circular circuit board, the LEDs being mounted in a horizontal direction, to achieve the desired omnidirectional illumination pattern.
The object of the present invention is to create a new type of flight obstacle light implemented using high-power semiconductor light sources, wherein the semiconductor light sources of the light fitting can be disposed in a new way, thus making it possible to reduce the number of semiconductor light sources required. In the implementation described in the present invention, the semiconductor light sources of the flight obstacle light are fitted in a vertical orientation on the circuit board, and they are provided with light directing lenses, by means of which the light of the light fitting is directed horizontally omnidirectionally as in the WO specification referred to above. The features of the solution of the invention are presented in detail in the claims below.
The present invention provides the advantage of reducing the required number of semiconductor light source components from tens of components to one or a few, depending on the luminous efficiency needed. As the number of semiconductor light sources is significantly reduced, the power consumption of the flight obstacle light is also reduced.
By applying the invention, the semiconductor light sources can be placed in the middle of the circuit board, so they are e.g. better protected against mechanical damage. In addition, only a few semiconductor light sources are needed, placed at a suitable distance from each other on the circuit board so that the light produced by them together is horizontally omnidirectional.
In the following, the invention will be described in detail with reference to an example and the attached drawings, wherein Fig. 3 presents a flight obstacle light implementation in side view.
Fig. 2a presents a semiconductor light source used in the flight obstacle light, which emits light in a vertical direction while the circuit board is in a horizontal position. Fig. 2b presents a semiconductor light source provided with a lens that directs the light emitted by the semiconductor light source so that the light is radiated horizontally omnidirectionally.
Fig. 4 presents a flight obstacle light having a body part (1) which can be attached to a connection box (2) below it, and which has a transparent protective hood 3 covering it. The body part (1) comprises an electronics part, which consists of a discoid circuit board with the light control electronics fitted on it. The control electronics comprises a chopper source for supplying the required direct voltage, e.g. 48 V, to the semiconductor light sources, as well as other necessary control circuits for controlling and regulating the light. Placed on the circuit board are light emitting semiconductor light sources so that a sufficient luminous efficiency, at least 10 cd, is achieved. Fitted over the semiconductor light sources are lenses (4) for directing the light horizontally. This is visualized more closely in Fig. 2b, where a lens is mounted upon the semiconductor light source in the manner illustrated in the figure. In this way, a desired illumination pattern is produced, the illumination pattern of the flight obstacle light thus being horizontally omnidirectional light emitted as a light beam with a vertical angle of at least 3°, but typically 10°.
It is obvious to the person skilled in the art that different embodiments of the invention are not limited to the example described above, but that they may be varied within the scope of the claims presented below.

Claims

1. A flight obstacle light having a body [Fig. 4-1] on which is fitted an electronics part of the light for controlling the light sources, said electronics part comprising at least one horizontal circuit board on which are fitted a light emitting semiconductor light source unit, such as a LED, Light Emitting Diode, and a lens structure for directing the light horizontally omnidirectionally [Fig. 4-4], and a switching unit [Fig. 4-2] for connecting a supply voltage to the flight obstacle light, characterized in that the light source or light sources of the semiconductor light source unit are fitted vertically on the circuit board and a lens/lenses directing the light horizontally is/are fitted on the light source/sources in such manner [Fig. 4-4 and Fig. 2b] that the flight obstacle light will produce the required illumination pattern.
2. A flight obstacle light according to claim 1 , characterized in that the semiconductor light source is mounted in a vertical position on a horizontal circuit board, the light being thus directed upwards, but the light emitted by the semiconductor light source is directed by means of a separate lens to produce a horizontally omnidirectional light.
3. A flight obstacle light according to claim 1 , characterized in that the control unit [Fig. 4-1] comprises a switched-mode power supply or equivalent for supplying a low direct voltage to the light source unit.
4. A flight obstacle light according to claim 1 , characterized in that the light fitting may comprise one or more semiconductor light sources provided with a directional lens to produce the required luminous intensity.
5. A flight obstacle light according to claim 1 , characterized in that it can have one or more semiconductor light sources for one directional lens.
6. A flight obstacle light according to claim 1 , characterized in that the light can be implemented using semiconductor light sources of different colors.
PCT/FI2004/000398 2003-06-30 2004-06-29 Flight obstacle light provided with lens structure Ceased WO2005001330A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20030975 2003-06-30
FI20030975A FI114941B (en) 2003-06-30 2003-06-30 Flights Warning Fittings

Publications (1)

Publication Number Publication Date
WO2005001330A1 true WO2005001330A1 (en) 2005-01-06

Family

ID=8566326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2004/000398 Ceased WO2005001330A1 (en) 2003-06-30 2004-06-29 Flight obstacle light provided with lens structure

Country Status (2)

Country Link
FI (1) FI114941B (en)
WO (1) WO2005001330A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2428467A (en) * 2005-07-21 2007-01-31 Imt Bv Explosion proof lighting fixture
US11479361B2 (en) 2019-09-25 2022-10-25 Airbus Operations, S.L.U. Lighting system for an aircraft with multichannel lens

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001025681A1 (en) * 1999-10-04 2001-04-12 Hutchins Nicolas D Elongated light emitting diode lighting system
US20010024112A1 (en) * 2000-02-03 2001-09-27 Jacobs Ronny Andreas Antonius Maria Supply assembly for a LED lighting module
GB2372091A (en) * 2001-02-09 2002-08-14 John Clayton Ruddick Hazard light or beacon with an optical element to control horizontal and vertical beam spread
GB2350176B (en) * 1999-05-18 2002-10-09 John Clayton Ruddick Light beacon

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2350176B (en) * 1999-05-18 2002-10-09 John Clayton Ruddick Light beacon
WO2001025681A1 (en) * 1999-10-04 2001-04-12 Hutchins Nicolas D Elongated light emitting diode lighting system
US20010024112A1 (en) * 2000-02-03 2001-09-27 Jacobs Ronny Andreas Antonius Maria Supply assembly for a LED lighting module
GB2372091A (en) * 2001-02-09 2002-08-14 John Clayton Ruddick Hazard light or beacon with an optical element to control horizontal and vertical beam spread

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2428467A (en) * 2005-07-21 2007-01-31 Imt Bv Explosion proof lighting fixture
US11479361B2 (en) 2019-09-25 2022-10-25 Airbus Operations, S.L.U. Lighting system for an aircraft with multichannel lens

Also Published As

Publication number Publication date
FI20030975A7 (en) 2004-12-31
FI20030975A0 (en) 2003-06-30
FI114941B (en) 2005-01-31

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