EP2801753A1 - Appareil d'éclairage de secours - Google Patents

Appareil d'éclairage de secours Download PDF

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Publication number
EP2801753A1
EP2801753A1 EP20140382165 EP14382165A EP2801753A1 EP 2801753 A1 EP2801753 A1 EP 2801753A1 EP 20140382165 EP20140382165 EP 20140382165 EP 14382165 A EP14382165 A EP 14382165A EP 2801753 A1 EP2801753 A1 EP 2801753A1
Authority
EP
European Patent Office
Prior art keywords
light fixture
emergency light
fixture according
circuit board
heat
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.)
Granted
Application number
EP20140382165
Other languages
German (de)
English (en)
Other versions
EP2801753B1 (fr
Inventor
Jose Antonio Fernandez de Arróyabe Santos
Urko Marquinez Olabarrieta
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.)
Daisalux SA
Original Assignee
Daisalux 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 Daisalux SA filed Critical Daisalux SA
Publication of EP2801753A1 publication Critical patent/EP2801753A1/fr
Application granted granted Critical
Publication of EP2801753B1 publication Critical patent/EP2801753B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F21S9/022—Emergency lighting devices
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • 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
    • 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 belongs to the field of lighting.
  • the object of the present invention is an emergency light fixture working with LED diodes and equipped with a novel heat dissipation system improved in relation to the system used in conventional emergency light fixtures.
  • these light fixtures require a heat dissipation system to discharge the heat generated in LED power supply circuits.
  • This heat dissipation system usually takes the form of fins or radiators, thus increasing the total volume of the light fixture. This in turn leads to restrictions concerning the places where these light fixtures can be installed.
  • current light fixtures also have drawbacks related to disassembly because the use of screws, welds, etc., considerably increases the time needed to perform tasks as simple as changing cells or batteries, replacing the LED circuit in the event of malfunction or breakdown, etc. Additionally, the fixing systems incorporated in current light fixtures are not flexible enough to allow a simple and quick fixing without needing to perform an excessive number of operations for measuring and positioning the anchoring orifices.
  • the present invention describes a novel light fixture comprising a LED lighting circuit board housed inside a casing, and further comprising thrust means compressing said LED circuit board against a heat-diffusing wall of said casing to facilitate discharging heat.
  • This configuration allows, on one hand, greatly improving the heat discharge capacity of the light fixture, because the heat generated by the LED circuit board is transmitted by conduction to the heat-diffusing wall, which in turn gives that heat off into the environment.
  • This better performance in terms of heat dissipation capacity allows avoiding the use of fins, radiators, or similar elements, which are common in light fixtures in the prior art, a smaller emergency light fixture thus being obtained.
  • the heat-diffusing wall is preferably metallic, and it is more preferably made of aluminum.
  • Concerning the thrust means, said means can be elastic thrust means.
  • the light fixture further comprises a body having side channels equipped with a ramp at a lower end, and where the heat-diffusing wall comprises tabs configured for sliding in said channels for coupling said diffusing wall to said base.
  • the light fixture also preferably comprises an upper cover having tabs on its lower face configured for being coupled to a side groove of the upper edges of the heat-diffusing casing.
  • the heat-diffusing wall is therefore installed without needing to use screws, welds, or the like.
  • the tabs of said heat-diffusing wall are simply slid through the channels of the body of the light fixture. When reaching the lower end of the side channels, the ramp causes the diffusing wall to move laterally, assuring its correct positioning, being pressure-coupled.
  • the upper cover which is equipped with tabs arranged in ribs existing on its lower face and fitting in a side groove located on the upper edges of the diffusing casing, helps to suitably position the heat-diffusing casing.
  • the lower cover and, as will be seen, the anchor plate are fixed to the body of the light fixture without needing screws or welds, thereby helping in assembly and disassembly tasks.
  • the light fixture further comprises a reflector, which is preferably parabolic-shaped, and/or a diffuser coupled to the body next to the LED lighting circuit board to enlarge the emitted light beam and make it uniform.
  • the reflector allows enlarging the lighting area in a downward and also in a forward manner, whereas the diffuser serves to homogenize the entire lighting area for the purpose of eliminating lighting "peaks" at different points so that it is less bothersome to the human eye.
  • the present invention comprises an anchor plate configured for fixing the body of the light fixture to the wall.
  • This anchor plate preferably comprises orifices in which there are freely rotating bushings with elongated central orifices for fixing the anchor plate to a wall. So even though the person responsible for the installation does not make holes in the wall in the exact positions required, the freely rotating bushings can be turned until the elongated central orifices are correctly located opposite said holes.
  • This anchor plate is preferably connectable to the body of the light fixture as a result of a small sliding plate equipped with elastic arms ending in lugs configured for sliding in elongated orifices of the anchor plate, said small sliding plate further comprising a claw configured for fitting in a step arranged on a rear face of the body.
  • This connection system can be released by exerting upward manual thrust on the small sliding plate which causes the claw to be released, thus separating the body of the light fixture from the anchor plate.
  • the anchor plate preferably further comprises a terminal block equipped with grooves configured for receiving connection blades provided in a base circuit board powering the LED lighting circuit board.
  • the terminal block allows connecting the grid power supply to the light fixture in a conventional manner, whereas the grooves form the means for connecting with the base circuit board containing the control electronics of the light fixture.
  • the light fixture of the invention preferably comprises a compartment for housing batteries which is separated from the LED lighting circuit board by at least one wall. The service life thereof is thus increased because said batteries are insulated from the heat sources existing in the light fixture.
  • the emergency light fixture of the invention fundamentally has the following advantages:
  • This emergency light fixture (1) is preferably conceived for being placed on a wall and lighting up both the area immediately below it and a wide front area through the front face.
  • the light fixture (1) object of the invention is parallelepiped-shaped and comprises an anchor plate (2) for fixing it to the wall.
  • the anchor plate (2) serves to couple the body (1) of the light fixture to the wall.
  • the anchor plate (2) has orifices in which there are fitted respective bushings (3) which can rotate freely inside the orifices provided in the mentioned anchor plate (2) which in turn have elongated central orifices.
  • These elongated central orifices have dimensions such that the screws for fixing it to the wall fit therein.
  • the use of these bushings (3) allows absorbing minor mismatches occurring in the correspondence with the holes made in the wall because they can be turned until finding a position where the screws can be placed.
  • the plate (2) has a small sliding plate (4) having elastic arms ending in lugs running along elongated orifices made in the anchor plate (2). These elastic arms allow the vertical movement of the small plate (4) such that it allows two positions: a first position where the anchor plate (2) is separated from the body (1) of the light fixture and where the elastic arms are in the rest position; and a second position where the anchor plate (2) is fixed to the body (3) of the light fixture (1) with the elastic arms in the forced position. In this second position, a claw (21) of the small sliding plate (4) is coupled to a step (22) existing in the base (13) of the body (3) of the light fixture. So to separate the body (3) from the anchor plate (2), it is necessary to manually operate the small plate (4) by applying an upward thrust to release the claw (21) from the step (22).
  • the anchor plate (2) also comprises terminals (5) for coupling and connection to the grid. These terminals (5) furthermore have grooves (6) where connection blades provided in the base circuit board (7), beside the batteries (8) provided inside the light fixture, fit.
  • the base circuit board (7) is thus connected in a simple and automatic manner upon fixing the body (1) of the light fixture to the anchor plate (2).
  • the body (1) of the light fixture is closed as a result of an upper cover (9) having tabs (10) provided in side ribs existing on the lower face of said cover (9), as seen in greater detail in enlarged Figure 3c , and fitting in a step or side groove (11) made on the upper edges of the heat-diffusing wall (12).
  • This tight fit between both parts will serve for suitably positioning the diffusing wall (12) which is metallic in this example, more specifically made of aluminum, such that with the lower fitting described below the diffusing wall (12) is in continuous contact with the LED circuit (15) to dissipate heat, so it is a dual-purpose body (1).
  • it is the front enclosure of the light fixture, and on the other hand, it dissipates the heat produced when the LED circuit (15) which is in permanent contact starts working, as will be explained.
  • the diffusing wall (12) is introduced by sliding it from top to bottom through vertical side channels provided in the base (13) until the wall (12) accesses the area of the ramp (14) provided on the sides opposite the sides where the vertical side channels of the base (13) are located.
  • the diffusing wall (12) slides through these widened areas it adjusts as it slides in by permanently rubbing against the front face the LED circuit board (15) which is fitted in a gap made in the front cover (16) and is forced out by thrust means (17), which is an elastic means in this case, so that contact between the diffusing wall (12) and the LED circuit board (15) is permanent.
  • the LED circuit board (15) is therefore pressed against the aluminum diffusing wall (12), achieving optimal heat transfer between them.
  • a conductive paste is preferably applied between both elements to counteract possible surfaces imperfections, and the coupling is complete.
  • Figures 4a/4b/4c and 5a-c depict a position where the diffusing wall (12) of the casing is still half-closed, i.e., it has still not slid over the ramps (14) existing at the lower ends of the side edges of the body or base (13).
  • Figures 5a-c shown equivalent views where the diffusing wall (12) is completely coupled after having slid until being fixed as a result of the ramps (14) of the side edges of the body (13). In this position, the LED circuit board (15) is permanently in contact with said diffusing wall (12). It can therefore be seen how easy it is to access the LED circuit board (15) for replacement purposes due to malfunction or breakdown.
  • a parabolic reflector (18) having the particularity of projecting a light beam downwards, also covering a wide front lighting area.
  • a diffuser (19) has furthermore been provided for light projection to homogenize the entire lighting area, such that lighting "peaks" at different points are eliminated for the purpose of unifying lighting in the area and making it less bothersome to the human eye.
  • the lower portion of the body (1) of the light fixture is closed by means of a lower cover (20) with a window coinciding with the projection of the light beam reflected in the reflector (18).
  • Said reflector (18) is fitted between the lower cover (20) and a recess existing in the base circuit board (7) of the light fixture.
  • This board (7) is fixed by a side edge to the inside of one of the side faces of the body (13), and by the opposite edge to the contacts of the batteries (8).
  • the batteries (8) are arranged in a side compartment separate from the LED circuit board (15), as seen in Figures 9 and 10 , because said board (15) is a source of heat that could shorten the service life of the batteries (8).
  • the insulation for the mentioned compartment for the batteries (8) is complemented with a closure cover (9).
  • the body (1) of the light fixture is coupled to the anchor plate (2).
  • the blades emerging from the terminals (5) fit in grooves (6) made in the base circuit board (7), which thus allows supplying power to the LED board (15) of the light fixture when there is mains voltage.
  • These grooves (6) are clearly seen in Figures 8 and 9 .
  • the mechanism for securing the body (1) to the anchor plate (2) is by means of a small sliding plate (4) with a claw (21) that can fit in a step (22) provided in a cavity existing in the rear face of the body (13) of the light fixture.
  • the coupling takes place once the user overcomes the yield strength of the arms, having lugs running through inner elongated orifices existing in the anchor plates (2).
  • Figure 10 shows how the claw (21) provided in the small sliding plate (4) is still not housed in the step or recess (22) provided on the rear face of the body (13) of the light fixture.
  • Figure 11 shows how the small sliding plate (4) has already been moved by manual thrust means until overcoming the strength of the elastic arms.
  • the claw (21) therefore, is already housed and retained in the step (22) provided in the body (13), such that the anchor plate (2) and the body (13) of the light fixture (1) are attached to one another.

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)
EP14382165.0A 2013-05-07 2014-05-07 Appareil d'éclairage de secours Active EP2801753B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201330542U ES1079806Y (es) 2013-05-07 2013-05-07 Luminaria de emergencia

Publications (2)

Publication Number Publication Date
EP2801753A1 true EP2801753A1 (fr) 2014-11-12
EP2801753B1 EP2801753B1 (fr) 2017-12-06

Family

ID=48470618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14382165.0A Active EP2801753B1 (fr) 2013-05-07 2014-05-07 Appareil d'éclairage de secours

Country Status (2)

Country Link
EP (1) EP2801753B1 (fr)
ES (2) ES1079806Y (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104748059A (zh) * 2015-04-20 2015-07-01 安徽林敏新能源科技有限公司 隐形式墙面砖轮廓灯

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002016826A1 (fr) * 2000-08-24 2002-02-28 Simon Grant Rozenberg Ameliorations apportees a des lampes, des luminaires et des systemes d'eclairage
US20050259447A1 (en) * 2004-05-24 2005-11-24 Hubbell Incorporated. Emergency lighting fixture having adjustable reflector and lamp assembly
EP2273190A1 (fr) * 2009-07-06 2011-01-12 Ceramate Technical Co., Ltd Lampe DEL modulaire remplaçable multifonction
US20130050996A1 (en) * 2011-08-29 2013-02-28 Hubbell Incorporated Emergency lighting assembly having heat conducting member

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002016826A1 (fr) * 2000-08-24 2002-02-28 Simon Grant Rozenberg Ameliorations apportees a des lampes, des luminaires et des systemes d'eclairage
US20050259447A1 (en) * 2004-05-24 2005-11-24 Hubbell Incorporated. Emergency lighting fixture having adjustable reflector and lamp assembly
EP2273190A1 (fr) * 2009-07-06 2011-01-12 Ceramate Technical Co., Ltd Lampe DEL modulaire remplaçable multifonction
US20130050996A1 (en) * 2011-08-29 2013-02-28 Hubbell Incorporated Emergency lighting assembly having heat conducting member

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104748059A (zh) * 2015-04-20 2015-07-01 安徽林敏新能源科技有限公司 隐形式墙面砖轮廓灯

Also Published As

Publication number Publication date
ES1079806U (es) 2013-05-23
ES1079806Y (es) 2013-08-21
EP2801753B1 (fr) 2017-12-06
ES2663138T3 (es) 2018-04-11

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