EP4089317A1 - Appareil d'éclairage - Google Patents

Appareil d'éclairage Download PDF

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Publication number
EP4089317A1
EP4089317A1 EP21425020.1A EP21425020A EP4089317A1 EP 4089317 A1 EP4089317 A1 EP 4089317A1 EP 21425020 A EP21425020 A EP 21425020A EP 4089317 A1 EP4089317 A1 EP 4089317A1
Authority
EP
European Patent Office
Prior art keywords
unit
lighting
lighting apparatus
support
diffuser
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.)
Pending
Application number
EP21425020.1A
Other languages
German (de)
English (en)
Inventor
Angelo Vendrame
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.)
Linea Light SRL
Original Assignee
Linea Light 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 Linea Light SRL filed Critical Linea Light SRL
Priority to EP21425020.1A priority Critical patent/EP4089317A1/fr
Publication of EP4089317A1 publication Critical patent/EP4089317A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/081—Lighting devices intended for fixed installation with a standard of low-built type, e.g. landscape light
    • F21S8/083—Lighting devices intended for fixed installation with a standard of low-built type, e.g. landscape light of bollard type, i.e. with lighting fixture integrated into the standard or mounted on top of it and having substantially the same diameter
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting

Definitions

  • the present invention concerns a lighting apparatus, such as a light pole or suchlike, and in particular a lighting apparatus in which the position of the diffuser unit is adjustable, for example in height.
  • a lighting apparatus such as a light pole or suchlike
  • the position of the diffuser unit is adjustable, for example in height.
  • the following description will refer in particular to a light pole, but it is clear that the present invention can also be applied for any other type of lighting apparatus in which it is desirable to vary the position, for example the height, of the light diffuser unit.
  • lighting apparatuses generally comprise a lighting unit and a diffuser unit.
  • the lighting unit comprises a light source, for example LEDs, bulbs or suchlike, which is electrically powered by means of a power supply cable.
  • the diffuser unit can comprise reflecting and diffusing elements of various shapes and types, in order to diffuse the light coming from the lighting unit in the desired manner, for example in the desired direction and with the desired intensity.
  • One type of lighting apparatus is represented by light poles, which usually have a height-adjustable diffuser unit and normally constrained to the lighting unit.
  • the diffuser unit and the lighting unit can be located for example inside a fixed support, therefore when the position of the diffuser unit is changed with respect to the fixed support, the lighting unit inevitably also moves.
  • the power supply cable will have a shorter length when the light pole is in the lowered position and a greater length when the light pole is in the raised position.
  • the power supply cable is positioned partly rolled up inside a suitable oversized housing, so its length is substantially varied by rolling or unrolling it.
  • the power supply cable may therefore be subject to risks of jamming and twisting during its movement to adapt to the position of the diffuser unit.
  • the unwanted jamming or twisting of the cable can for example cause the incorrect functioning of the light pole, for example, a jamming of the power supply cable in a retracted position could cause the failed or incorrect raising of the assembly consisting of the diffuser unit and the lighting unit.
  • one purpose of the present invention is to provide a lighting apparatus having a diffuser unit the position of which can be adjusted independently of the position of the lighting unit and in which therefore the movement of the diffuser unit does not entail a lengthening/shortening of the power supply cable.
  • Another purpose of the present invention is to provide a lighting apparatus which functions correctly whatever the position taken by the diffuser unit, which is structurally simple and therefore does not require the construction of particular housings for the power supply cable, for example oversized housings or suchlike.
  • Another purpose of the present invention is to minimize the overall losses in efficiency of the light intensity due to the distancing of the diffuser unit from the lighting unit.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • a lighting apparatus comprises at least one lighting unit provided with at least one light source connected to at least one electric power supply cable, both in a fixed position, and at least one mobile and independent diffuser unit, configured to effectively diffuse the light emitted by the light source.
  • the position of the diffuser unit can be adjusted independently of the position of the lighting unit and consequently the length of the power supply cable remains constant regardless of the position assumed by the diffuser unit.
  • the present lighting apparatus functions correctly whatever the position assumed by the diffuser unit, it is structurally simple and does not require the construction of special housings for the power supply cable.
  • this diffuser unit can be associated with a light channeling element having a variable extension so as to adjust the distance between the lighting unit and the diffuser unit.
  • the channeling element can comprise, for example, at least one substantially tubular element with which the diffuser unit is associated and preferably telescopically extractable with respect to a support with which the lighting unit is associated.
  • the diffuser unit can be housed on the top, or more generally at the end, of the channeling element.
  • the support can be, for example, a tubular element inside which the lighting unit is housed.
  • the lighting unit can be housed on the top, or also in this case more generally at the end, of the support.
  • the tubular element can be fitted on the support, therefore if the tubular element and the support have a cylindrical section, the tubular element has an internal diameter greater than the external diameter of the support.
  • the lighting unit and the diffuser unit can be substantially coaxial, so as for example to adjust the position in height of the diffuser unit with respect to the lighting unit.
  • the lighting unit can comprise at least one optical element for emitting a very narrow beam of light, that is, preferably having an amplitude comprised between about 3° and about 20°.
  • the lighting unit can comprise a system for clamping the cable into position.
  • the diffuser unit can comprise at least one optical element, at least one diffusing element and at least one reflective element which are clearly distinct or made by means of a single component.
  • a lighting apparatus 10 comprises at least one fixed lighting unit 11 provided with at least one light source 12 connected to at least one electric power supply cable 13, and at least one mobile diffuser unit 14, configured to diffuse the light emitted by the light source 12 and separated from the lighting unit 11.
  • the diffuser unit 14 can be associated with a light channeling element 15 having a variable extension so as to adjust the distance between the lighting unit 11 and the diffuser unit 14.
  • the channeling element 15 has the function of containing toward the outside the light radiation from the generation point represented by the lighting unit 11 to the external emission point represented by the diffuser unit 14.
  • the channeling element 15, see also fig. 3 and fig. 4 can comprise at least one tubular element 16 with which the diffuser unit 14 is associated.
  • the tubular element 16 can be telescopically extractable with respect to a support 17 with which the lighting unit 11 is associated.
  • a support 17 with which the lighting unit 11 is associated.
  • the support 17 can also be a tubular element inside which the lighting unit 11 is housed.
  • the lighting unit 11 is preferably housed on the top of the support 17, so as to be at the minimum distance from the channeling element 15.
  • the power supply cable 13 will therefore substantially pass through the entire extension of the support 17 and therefore will be connected on one side to the lighting unit 11 and on the other to a source of electrical energy, for example a normal mains power supply network.
  • the tubular element 16 is fitted onto the support 17, therefore if the tubular element 16 and the support 17 have a cylindrical section, the tubular element 16 will have an internal diameter greater than the external diameter of the support 17. In this way, the light passage section is not reduced passing from the lighting unit 11 to the channeling element 15.
  • the telescopic tubular system described above for producing the channeling element 15 is only one of the possible solutions for this channeling element 15, which could therefore also be made according to other modalities that in any case provide the movement of the channeling element 15 so as to adjust the distance between the lighting unit 11 and the diffuser unit 14.
  • the support 17 can be attached on, or embedded in, an installation surface 18. If the lighting apparatus 10 is a light pole, the installation surface 18 is the ground and the support 17 can be anchored to the ground by means of a base 20.
  • the base 20 can comprise an aperture for the cable 13 to exit toward the source of electrical energy.
  • the diffuser unit 14 can be housed on the top of the channeling element 15, in order to correctly diffuse the light emitted by the lighting unit 11 and in order to obtain the maximum possible extension for the lighting apparatus 10.
  • the lighting unit 11 and the diffuser unit 14 are therefore substantially coaxial and, if the lighting apparatus 10 is a light pole, the height of the diffuser unit 14 with respect to the fixed lighting unit 11 can be varied thanks to the mobile channeling element 15 with which the diffuser unit 14 is associated.
  • the lighting unit 11 can comprise a command and drive assembly 21, provided for example with a compartment 22 which houses inside it an electronic circuit 19 for powering and piloting the light source 12, for example one or more LEDs.
  • the compartment 22 can optionally be made hermetically sealed by means of suitable sealing means, such as for example an O-ring or suchlike, for example a cable gland.
  • a system 23 for clamping the cable 13 into position for example a strap or suchlike, useful for preventing any accidental twisting and/or detaching phenomena.
  • the light source 12 can comprise a printed circuit 25 on which an LED diode is positioned, for example an XHP35 or XPG2 LED.
  • This printed circuit 25 can be positioned on a metal support 26 by means of attachment means 24, such as screws or suchlike.
  • the lighting unit 11 can also be provided with at least one optical element 28, for example a polycarbonate lens, with emission of a very narrow beam of light, that is, preferably having an amplitude comprised between about 3° and about 20°.
  • This optical element 28 can be part of a light emission assembly 27 and possibly be housed on a clamping and/or centering support 29. In this way, the lighting unit 11 is able to generate a "very narrow" beam of light.
  • the optical element 28 could be the light source 12 itself, a reflector instead of the lens, or other.
  • the beam generated by the lighting unit 11 is narrow means that a large part of the emitted light radiation directly reaches the diffuser unit 14, limiting the continuous light refractions generated by the outermost beams of light that impact the internal walls of the channeling element 15 and which could cause a loss of output of the lighting apparatus 10. Thanks to the narrow beam generated by the lighting unit 11, the light output is therefore influenced by the distance between the lighting unit 11 and the diffuser unit 14 in a substantially negligible manner.
  • the diffuser unit 14 can comprise an optical element 30, preferably made of polycarbonate, suitably designed and manufactured to receive all the light coming from the lighting unit 11 and completely radiate it to a diffusing element 31.
  • the diffusing element 31 can consist of a shaped diffuser, preferably made of polycarbonate, able to homogenize the light coming from the optical element 30.
  • the diffuser unit 14 will also comprise a reflective element 32 comprising for example a body or preferably a disc made of plastic material with an ultra-reflective white finish which recovers a large part of the luminous flux that may have escaped from the diffusing element 31, in order to redirect it toward the latter and therefore toward the outside.
  • the diffuser unit 14 can be completed by a cover 33, for example with a circular shape, as shown.
  • the optical element 30, the diffusing element 31 and the reflective element 32 could be made clearly distinct or by means of a single component specifically designed to emit a particular desired beam of light toward the outside.
  • the present lighting apparatus 10 is shown in a retracted position, that is, in the case of a light pole, with the diffuser unit 14 at the minimum height from the ground.
  • the present lighting apparatus 10 is shown in an extended position, that is, in the case of a light pole, with the diffuser unit at the maximum height above the ground.
  • the electric power supply cable 13 has a constant length L, since the lighting unit 11 remains fixed while the diffuser unit 14 is raised or lowered, thanks to the movement of the channeling element 15 with which it is associated.
  • the length L of the cable 13 is therefore substantially independent of the movements of the diffuser unit 14 away from or toward the lighting unit 11, therefore the need of known lighting apparatuses to shorten or lengthen the cable is overcome, and incidents of the cable getting stuck and twisted are thus prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP21425020.1A 2021-05-10 2021-05-10 Appareil d'éclairage Pending EP4089317A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21425020.1A EP4089317A1 (fr) 2021-05-10 2021-05-10 Appareil d'éclairage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21425020.1A EP4089317A1 (fr) 2021-05-10 2021-05-10 Appareil d'éclairage

Publications (1)

Publication Number Publication Date
EP4089317A1 true EP4089317A1 (fr) 2022-11-16

Family

ID=76859584

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21425020.1A Pending EP4089317A1 (fr) 2021-05-10 2021-05-10 Appareil d'éclairage

Country Status (1)

Country Link
EP (1) EP4089317A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1350892A (en) * 1970-03-25 1974-04-24 King C S Lighting fixture
FR2683618A1 (fr) * 1991-11-08 1993-05-14 Idlumiere Appareil d'eclairage du type lampadaire a source lumineuse inferieure.
US6111705A (en) * 1998-07-31 2000-08-29 Aqua Signal Aktiengesellschaft Light emitting device, in particular a lamp or lantern
WO2004099666A2 (fr) * 2003-05-09 2004-11-18 Space Cannon Vh S.P.A. Systeme d'eclairage avec un projecteur de lumiere situe dans un poteau
US20060083017A1 (en) * 2004-10-18 2006-04-20 Bwt Propety, Inc. Solid-state lighting apparatus for navigational aids
US20190203892A1 (en) * 2017-12-28 2019-07-04 Bezel Studio Lighting devices and methods

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1350892A (en) * 1970-03-25 1974-04-24 King C S Lighting fixture
FR2683618A1 (fr) * 1991-11-08 1993-05-14 Idlumiere Appareil d'eclairage du type lampadaire a source lumineuse inferieure.
US6111705A (en) * 1998-07-31 2000-08-29 Aqua Signal Aktiengesellschaft Light emitting device, in particular a lamp or lantern
WO2004099666A2 (fr) * 2003-05-09 2004-11-18 Space Cannon Vh S.P.A. Systeme d'eclairage avec un projecteur de lumiere situe dans un poteau
US20060083017A1 (en) * 2004-10-18 2006-04-20 Bwt Propety, Inc. Solid-state lighting apparatus for navigational aids
US20190203892A1 (en) * 2017-12-28 2019-07-04 Bezel Studio Lighting devices and methods

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