EP1710489B1 - Wall light fixture - Google Patents

Wall light fixture Download PDF

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Publication number
EP1710489B1
EP1710489B1 EP05380252A EP05380252A EP1710489B1 EP 1710489 B1 EP1710489 B1 EP 1710489B1 EP 05380252 A EP05380252 A EP 05380252A EP 05380252 A EP05380252 A EP 05380252A EP 1710489 B1 EP1710489 B1 EP 1710489B1
Authority
EP
European Patent Office
Prior art keywords
light
light fixture
sources
diffuser
reflector means
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.)
Not-in-force
Application number
EP05380252A
Other languages
German (de)
French (fr)
Other versions
EP1710489A3 (en
EP1710489A2 (en
Inventor
Albert Salazar Junyent
Juan Carlos Navarro Casamitjana
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.)
Vanlux SA
Original Assignee
Vanlux SA
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 Vanlux SA filed Critical Vanlux SA
Publication of EP1710489A2 publication Critical patent/EP1710489A2/en
Publication of EP1710489A3 publication Critical patent/EP1710489A3/en
Application granted granted Critical
Publication of EP1710489B1 publication Critical patent/EP1710489B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V7/04—Optical design
    • F21V7/05—Optical design plane
    • 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
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/033—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade
    • 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
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • 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
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • 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 light fixture offering different lighting configurations by means of a combination of light sources and a non-opaque means carrying out the functions of diffusing and reflecting the light.
  • the lighting requirements of a room can be grouped into four different types:
  • the first type corresponds to the requirements for exercising a visual activity, requiring a suitable and uniform room lighting level, and a reduced glare level.
  • the second type is produced with surveillance lighting, allowing supervision of the room by a security guard. Lower lighting levels are required for this task.
  • a third type corresponds to emergency lighting allowing evacuation of the room in cases of electrical power outage.
  • a series of standards must be met in terms of lighting and uniformity levels.
  • a last type corresponds to an aesthetic lighting of the room, of a work of art,... by combining color filters, the positioning of the light fixtures, etc.
  • Light fixtures offering these types of lighting are known, such as the indicator-type safety light described in document ES 1047398U , or the light fixture for tunnels described in document ES 2105065 T3 .
  • Light fixtures providing lighting of two types, such as the light fixture described in document ES 2065126 T3 , which provides visual activity lighting and esthetic lighting, are also known.
  • US 2003/0007348 discloses a luminaire having a tube-shaped gas discharge lamp containing at least one concavely curved reflector arranged-seen from the region to be illuminated-neighboring the lamp, and at least one partially light permeable diffusor arranged-likewise seen from the region to be illuminated-neighboring the lamp but before the reflector.
  • the diffusor and the reflector bound next to the lamp at least one light entry surface and run together at their ends away from the lamp such that they enclose at least one light chamber, the ratio between the width of a light chamber and the height of a light entry surface being at least 4:1. Further, there may be provided means for the attainment for a uniform light density over the width of the reflector.
  • the light fixture described in this specification has a simple structure which allows achieving any type of lighting by means of simple adjustments in the light fixture structure.
  • the light fixture is made up of two light sources generally spaced on a vertical plane, one being above the other, having between them a diffuser-reflector means in a slanted position between both and which both light sources are focused on.
  • a large variability of offered lighting levels and types is achieved by means of the light fixture of the invention using a single light fixture model.
  • a first light source is arranged on the side accessible from the room of the light fixture, whereas a second light source is covered by the diffuser-reflector means, preventing a user located in the room from being able to reach it.
  • the light emitted by the first light source is for the most part reflected so as to light up the room, thus allowing the use of the light fixture to provide light for visual activities.
  • the light emitted by the second light source must be transmitted by the diffuser-reflector means so it can be used by a user of the room. Since the diffuser-reflector means transmission factor is considerably less than the reflection factor, the lighting level offered is smaller, surveillance lighting being obtained.
  • this second light source When this second light source is powered by an emergency battery which is actuated when there is a power outage, emergency lighting is provided.
  • This battery can be connected to the first light source, reaching higher lighting levels.
  • the diffuser-reflector means will be made up of different materials according to the type of light source used. If both light sources are cold, such as fluorescent tubes or LEDs, the diffuser-reflector means will be made up of a sheet of frosted methacrylate or polycarbonate, to which a sheet of polyester having a thickness between 0.02 mm and 0.1 mm is adhered so that the optical properties are about: Reflection factor 60-70% Transmission factor 20-35% Absorption factor about 5%
  • the diffuser-reflector means must be temperature-resistant glass (such as borosilicate glass or the like), or a tempered glass, with a sandblasting or acid treatment, and metal deposition by means of the spattering technique, the metal being aluminum, silver or another suitable metal, so as to achieve the following optical characteristics: Reflection factor 70-80% Transmission factor 15-25% Absorption factor ⁇ 5%
  • Aesthetic lighting can be obtained by means of the placement of color filters between the light sources and the diffuser-reflector means, or by making this diffuser-reflector means have its own filter or making it simulate stained glass.
  • the light fixture fits onto a wall, projecting therefrom only a frame assuring the fastening of the different elements while at the same time covering up flaws on the edges of the wall in contact with the light fixture.
  • Protective glass is arranged on the mouth of at least a first box containing the first light source since it is more accessible to users, so as to protect the light sources, furthermore carrying out part of the diffusion of the light emitted by the source. If the first light source is cold, the glass can be substituted with a polymeric material, such as polycarbonate or methacrylate, provided it has a high transmission factor.
  • Figure 1 shows a light fixture built according to the present invention. Observed therein is the diffuser-reflector means (3), in a slanted position between the two light sources (1, 2), which cannot be seen since they are inside the boxes (7,8) located next to the diffuser-reflector means (3).
  • Triangular side covers (6) on which the diffuser-reflector means (3) is supported are installed to fix the diffuser-reflector means (3) and prevent its shifting from the anticipated position.
  • a protective glass (4) Arranged in the top portion of the first box (8) there is a protective glass (4) which can be transparent or incorporate designs or colors carrying out aesthetic functions when the first light source (1) is switched on, in addition to the functions of protecting the first light source (1).
  • the installation of the light fixture on the wall is initially done with the introduction of the second box (7) together with the first box (8) and the back of the light fixture, both light sources (1, 2) being arranged inside the boxes (7, 8), protected by the corresponding protective glasses (4). Then the diffuser-reflector means (3) is arranged, and the assembly is closed and supported with the side covers (6) and the frame (5) for fixing the light fixture.
  • Figure 2 shows the light fixture operating diagram
  • the diffuser-reflector means (3) When the first power source (1) is switched on, the diffuser-reflector means (3) reflects about 70% of the light.
  • the reflected light (9) allows obtaining the lighting level required for performing a visual activity, corresponding to the first type of requirement defined hereinbefore.
  • the light fixture is externally similar to a conventional light fixture.
  • the light emitted by the light fixture towards the room is limited to about 20-30% of the light. This percentage corresponds to the light (10) transmitted by the diffuser-reflector means (3), providing a surveillance lighting level.
  • the diffuser-reflector means (3) is opal-type so that it prevents that the light transmitted from the first light source (1) in the first case and the light reflected with the second light source (2) in the second case enable seeing the inside of the light fixture.
  • Emergency lighting is achieved by means of the connection of one of the light sources (1, 2), preferably the second light source (2), to a battery similar to emergency lights existing on the market.
  • Color filters or designs may be arranged between the light sources (1, 2) and the diffuser-reflector means (3) so as to provide an aesthetic lighting, whether with both light sources (1, 2) or just with one of them.
  • An installation of several light fixtures of those described in this specification can be carried out by combining light fixtures connected to batteries providing emergency lighting, and light fixtures providing surveillance lighting.

Landscapes

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

Abstract

The luminary has two light sources (1, 2) inserted between half reflector and diffuser units. An angle is formed between the light sources. An emergency battery is connected to the light sources. Color filters are provided on the light sources.

Description

    Field of the Invention
  • As expressed in the title of this specification, the present invention relates to a light fixture offering different lighting configurations by means of a combination of light sources and a non-opaque means carrying out the functions of diffusing and reflecting the light.
    • State of the Art
  • The lighting requirements of a room can be grouped into four different types:
  • The first type corresponds to the requirements for exercising a visual activity, requiring a suitable and uniform room lighting level, and a reduced glare level.
  • The second type is produced with surveillance lighting, allowing supervision of the room by a security guard. Lower lighting levels are required for this task.
  • A third type corresponds to emergency lighting allowing evacuation of the room in cases of electrical power outage. A series of standards must be met in terms of lighting and uniformity levels.
  • A last type corresponds to an aesthetic lighting of the room, of a work of art,... by combining color filters, the positioning of the light fixtures, etc.
  • Light fixtures offering these types of lighting are known, such as the indicator-type safety light described in document ES 1047398U , or the light fixture for tunnels described in document ES 2105065 T3 .
  • Light fixtures providing lighting of two types, such as the light fixture described in document ES 2065126 T3 , which provides visual activity lighting and esthetic lighting, are also known.
  • US 2003/0007348 discloses a luminaire having a tube-shaped gas discharge lamp containing at least one concavely curved reflector arranged-seen from the region to be illuminated-neighboring the lamp, and at least one partially light permeable diffusor arranged-likewise seen from the region to be illuminated-neighboring the lamp but before the reflector. The diffusor and the reflector bound next to the lamp at least one light entry surface and run together at their ends away from the lamp such that they enclose at least one light chamber, the ratio between the width of a light chamber and the height of a light entry surface being at least 4:1. Further, there may be provided means for the attainment for a uniform light density over the width of the reflector.
  • The applicant is not aware of any light fixtures offering two types of lighting and furthermore allowing choosing the two types of lighting offered by means of simple changes in the light fixture structure.
    • Description of the Invention
  • The light fixture described in this specification has a simple structure which allows achieving any type of lighting by means of simple adjustments in the light fixture structure.
  • The light fixture is made up of two light sources generally spaced on a vertical plane, one being above the other, having between them a diffuser-reflector means in a slanted position between both and which both light sources are focused on.
  • A large variability of offered lighting levels and types is achieved by means of the light fixture of the invention using a single light fixture model.
  • A first light source is arranged on the side accessible from the room of the light fixture, whereas a second light source is covered by the diffuser-reflector means, preventing a user located in the room from being able to reach it.
  • The light emitted by the first light source is for the most part reflected so as to light up the room, thus allowing the use of the light fixture to provide light for visual activities.
  • The light emitted by the second light source must be transmitted by the diffuser-reflector means so it can be used by a user of the room. Since the diffuser-reflector means transmission factor is considerably less than the reflection factor, the lighting level offered is smaller, surveillance lighting being obtained.
  • When this second light source is powered by an emergency battery which is actuated when there is a power outage, emergency lighting is provided. This battery can be connected to the first light source, reaching higher lighting levels.
  • The diffuser-reflector means will be made up of different materials according to the type of light source used. If both light sources are cold, such as fluorescent tubes or LEDs, the diffuser-reflector means will be made up of a sheet of frosted methacrylate or polycarbonate, to which a sheet of polyester having a thickness between 0.02 mm and 0.1 mm is adhered so that the optical properties are about:
    Reflection factor 60-70%
    Transmission factor 20-35%
    Absorption factor about 5%
  • If in contrast the light sources are hot, such as incandescent, halogen or metal halide sources, the diffuser-reflector means must be temperature-resistant glass (such as borosilicate glass or the like), or a tempered glass, with a sandblasting or acid treatment, and metal deposition by means of the spattering technique, the metal being
    aluminum, silver or another suitable metal, so as to achieve the following optical characteristics:
    Reflection factor 70-80%
    Transmission factor 15-25%
    Absorption factor <5%
  • Aesthetic lighting can be obtained by means of the placement of color filters between the light sources and the diffuser-reflector means, or by making this diffuser-reflector means have its own filter or making it simulate stained glass.
  • The light fixture fits onto a wall, projecting therefrom only a frame assuring the fastening of the different elements while at the same time covering up flaws on the edges of the wall in contact with the light fixture.
  • Protective glass is arranged on the mouth of at least a first box containing the first light source since it is more accessible to users, so as to protect the light sources, furthermore carrying out part of the diffusion of the light emitted by the source. If the first light source is cold, the glass can be substituted with a polymeric material, such as polycarbonate or methacrylate, provided it has a high transmission factor.
    • Description of the Drawings
  • For the purpose of clarifying the detailed description of an embodiment, drawings are attached which allow understanding the basis of the present invention.
    • Figure 1 shows a perspective view of the light fixture.
    • Figure 2 shows a diagram of the light fixture in which the operating principle can be observed.
    Description of an Embodiment
  • Figure 1 shows a light fixture built according to the present invention. Observed therein is the diffuser-reflector means (3), in a slanted position between the two light sources (1, 2), which cannot be seen since they are inside the boxes (7,8) located next to the diffuser-reflector means (3).
  • Triangular side covers (6) on which the diffuser-reflector means (3) is supported are installed to fix the diffuser-reflector means (3) and prevent its shifting from the anticipated position.
  • Arranged in the top portion of the first box (8) there is a protective glass (4) which can be transparent or incorporate designs or colors carrying out aesthetic functions when the first light source (1) is switched on, in addition to the functions of protecting the first light source (1).
  • There can be arranged in the bottom portion of the second box (7) a similar glass with the same purpose.
  • The installation of the light fixture on the wall is initially done with the introduction of the second box (7) together with the first box (8) and the back of the light fixture, both light sources (1, 2) being arranged inside the boxes (7, 8), protected by the corresponding protective glasses (4). Then the diffuser-reflector means (3) is arranged, and the assembly is closed and supported with the side covers (6) and the frame (5) for fixing the light fixture.
  • Figure 2 shows the light fixture operating diagram.
  • When the first power source (1) is switched on, the diffuser-reflector means (3) reflects about 70% of the light. The reflected light (9) allows obtaining the lighting level required for performing a visual activity, corresponding to the first type of requirement defined hereinbefore. In this arrangement, the light fixture is externally similar to a conventional light fixture.
  • When only the second power source (2) is switched on, the light emitted by the light fixture towards the room is limited to about 20-30% of the light. This percentage corresponds to the light (10) transmitted by the diffuser-reflector means (3), providing a surveillance lighting level.
  • It is suitable that the diffuser-reflector means (3) is opal-type so that it prevents that the light transmitted from the first light source (1) in the first case and the light reflected with the second light source (2) in the second case enable seeing the inside of the light fixture.
  • Emergency lighting is achieved by means of the connection of one of the light sources (1, 2), preferably the second light source (2), to a battery similar to emergency lights existing on the market.
  • Color filters or designs may be arranged between the light sources (1, 2) and the diffuser-reflector means (3) so as to provide an aesthetic lighting, whether with both light sources (1, 2) or just with one of them.
  • An installation of several light fixtures of those described in this specification can be carried out by combining light fixtures connected to batteries providing emergency lighting, and light fixtures providing surveillance lighting.

Claims (7)

  1. A wall light fixture suitable for being fitted into a wall, which comprises two spaced light sources (1, 2) and a diffuser-reflector means (3) in a slanted intermediate position between both light sources (1, 2), both light sources (1, 2) being focused on the diffuser-reflector means (3) characterized in that from the outside of the light fixture, the first and second light sources (1, 2) cannot be seen since they are arranged inside first and second boxes (8, 7), the boxes being located next to the diffuser-reflector means (3) on opposite sides thereof;
    and while the second light source (2) is covered by the diffuser-reflector means (3), the first light source (1), being on the side most accessible from the outside of the light fixture, is protected by a protective glass (4) arranged on a mouth of the first box (8).
  2. A light fixture according to claim 1, characterized in that the diffuser-reflector means (3) has a reflection factor between 60 and 80%, a transmission factor between 15 and 30% and an absorption factor not exceeding 5%.
  3. A light fixture according to claim 1 or 2, characterized in that both light sources (1, 2) are sources referred to as cold sources, such as fluorescent tubes and LEDs, and the diffuser-reflector means (3) is a polycarbonate or methacrylate with an adhered polyester sheet.
  4. A light fixture according to claim 1 or 2, characterized in that both light sources (1, 2) are sources referred to as hot sources, such as incandescent, halogen and metal halide sources, and the diffuser-reflector means (3) is a temperature resistant, sandblasted or acid-treated glass with a metal deposition carried out by means of the spattering technique.
  5. A light fixture according to any of claims 1 to 4, characterized in that it further comprises an emergency battery actuating one of the light sources (1, 2) in power outage conditions.
  6. A light fixture according to any of claims 1 to 5, characterized in that it further comprises aesthetic filters in at least one of the light sources (1, 2).
  7. A light fixture according to any of claims 1 to 6, characterized in that it further comprises a frame (5) for enclosing the light fixture.
EP05380252A 2005-04-08 2005-11-30 Wall light fixture Not-in-force EP1710489B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200500825A ES2237349B1 (en) 2005-04-08 2005-04-08 WALL LUMINARY.

Publications (3)

Publication Number Publication Date
EP1710489A2 EP1710489A2 (en) 2006-10-11
EP1710489A3 EP1710489A3 (en) 2007-03-28
EP1710489B1 true EP1710489B1 (en) 2011-03-30

Family

ID=34802928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05380252A Not-in-force EP1710489B1 (en) 2005-04-08 2005-11-30 Wall light fixture

Country Status (4)

Country Link
EP (1) EP1710489B1 (en)
AT (1) ATE503964T1 (en)
DE (1) DE602005027175D1 (en)
ES (1) ES2237349B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1017526A3 (en) * 2007-03-23 2008-11-04 Illuminated object e.g. billboard, for use on e.g. road during dangerous situation, has metal surface placed transverse to direction of light source, so that light beam is visible on metal surface when observer moves along object
CN106297591A (en) * 2015-06-03 2017-01-04 张斌 Building display unit

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10006410A1 (en) * 2000-02-14 2001-08-16 Zumtobel Staff Gmbh Recessed ceiling light fitting has concave reflector and light diffuser cooperating to provide divergent light chambers on either side of tubular gas discharge lamp
GB2173889A (en) * 1985-04-05 1986-10-22 Manville Corp A reflector including prisms and a reflective coating thereon
US4992916A (en) * 1989-06-08 1991-02-12 General Electric Company Prismatic illuminator for flat panel display
US5251116A (en) * 1991-05-16 1993-10-05 U.S. Philips Corporation Luminaire for creating a primary beam and a secondary beam
DE69311583T2 (en) 1992-03-16 1998-01-08 Philips Electronics Nv lamp
US5412551A (en) * 1993-11-15 1995-05-02 Mark Lighting Co., Inc. Luminaire fixture
DE4443741A1 (en) * 1994-12-08 1996-06-13 Hartmut S Engel lamp
IT1291721B1 (en) * 1997-05-05 1999-01-21 Beghelli Srl EMERGENCY LIGHTING APPARATUS
US5988829A (en) * 1997-07-28 1999-11-23 Nsi Enterprises, Inc. Direct/indirect lighting fixtures
DE19957851A1 (en) * 1999-12-01 2001-06-28 Heinrich Kaase Optical device for alternative or simultaneous feeding of multiple sources of light into a tube light unit allows light flow from artificial or natural light sources to reach inlet openings for dividing and mixing light.
ES1047398Y (en) 2000-10-24 2001-09-01 Daisalux Sa SECURITY LIGHTING TYPE BALIZA
US6652113B2 (en) * 2001-10-01 2003-11-25 Robert J. Tant Dual mode indirect fluorescent lighting fixture

Also Published As

Publication number Publication date
DE602005027175D1 (en) 2011-05-12
EP1710489A3 (en) 2007-03-28
EP1710489A2 (en) 2006-10-11
ES2237349A1 (en) 2005-07-16
ES2237349B1 (en) 2006-11-01
ATE503964T1 (en) 2011-04-15

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