EP4556784A1 - Beleuchtungsbirne - Google Patents

Beleuchtungsbirne Download PDF

Info

Publication number
EP4556784A1
EP4556784A1 EP23210746.6A EP23210746A EP4556784A1 EP 4556784 A1 EP4556784 A1 EP 4556784A1 EP 23210746 A EP23210746 A EP 23210746A EP 4556784 A1 EP4556784 A1 EP 4556784A1
Authority
EP
European Patent Office
Prior art keywords
support structure
bulb
light
diffusion lens
upper portion
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Withdrawn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
EP23210746.6A
Other languages
English (en)
French (fr)
Inventor
Lucas Uhlmann
Patrick Morris
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.)
Iiode Sarl
Original Assignee
Iiode Sarl
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 Iiode Sarl filed Critical Iiode Sarl
Priority to EP23210746.6A priority Critical patent/EP4556784A1/de
Priority to PCT/IB2024/061406 priority patent/WO2025104689A1/fr
Publication of EP4556784A1 publication Critical patent/EP4556784A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/237—Details of housings or cases, i.e. the parts between the light-generating element and the bases; Arrangement of components within housings or cases
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
    • F21V3/12—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings the coatings comprising photoluminescent substances
    • 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
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • 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
    • F21V5/048—Refractors for light sources of lens shape the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis coincident with the main light transmission direction, e.g. convergent or divergent lenses, plano-concave or plano-convex lenses
    • 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 bulb, a support structure for a light bulb and a light diffusing lens.
  • heat dissipation elements In order to avoid reducing the problems related to the heat dissipated by a light bulb, it is for example known to insert heat dissipation elements in direct proximity to the light source, and therefore heat, in the bulb.
  • These heat dissipation elements can be passive, e.g. heat sink by thermal convection or active, e.g. micro fans integrated directly into the bulb.
  • the size of heat dissipation elements that can be integrated is limited.
  • the diameter of a light bulb's screw base is typically calibrated to match industry standards.
  • the volume available in a light bulb's base is predetermined by its intended use. To a lesser extent, the volume of the rest of the bulb is also determined by its intended use.
  • the heat dissipation elements it is therefore necessary for the heat dissipation elements to be relatively compact so that they can be integrated into the bulb, while maintaining their heat dissipation capacity as high as possible.
  • the document CN107883362A describes a heat sink for an LED device consisting of a heat sink and an aluminum substrate attached by a thermally conductive adhesive to a metal disc disposed around the LED.
  • the aluminum substrate is further soldered to a lower portion of the LED. This heat sink must then be integrated into a structural part supporting the LED, a bulb or lens and a bulb base.
  • the document KR20160134028A also describes a heat sink for an LED lighting device comprising a thermally conductive polymer element for transferring heat to an aluminum foam element cooling by natural convection.
  • This heat sink must also be mounted on a structural part supporting all the other elements of the bulb.
  • light bulbs and particularly LED bulbs
  • these bulbs are not usually designed to allow interchangeability of components, whether for the purpose of recycling the different elements separately or for simplified repair purposes. Indeed, these bulbs are generally designed as single-use without the possibility of replacing parts or as complex parts whose repair or replacement of components requires the intervention of a professional. There is therefore also a need for bulbs whose different components are assembled in an easily reversible manner in order to allow their recycling and/or to extend their lifespan by replacing certain parts as needed.
  • An object of the present invention is the provision of a light bulb mitigating the limitations known in the prior art.
  • Another object of the present invention is the provision of a light bulb making it possible to reconcile the compactness requirements of a bulb with the efficiency of a heat sink.
  • the porous metal substrate constitutes at least 80% of the support structure, preferably at least 90% of the support structure.
  • a diameter of the second end is equal to a diameter of the diffusion lens.
  • a diameter of the first end is less than a diameter of the second end.
  • a height of the support structure measured along the longitudinal axis is greater than or equal to 50% of a total height of the bulb measured along the longitudinal axis.
  • the porous metal substrate is a metal foam, preferably an aluminum foam.
  • the support structure includes a base attachment disposed on a surface of the first end and operable to removably attach the base to the support structure, the base attachment being embedded in a first embedding cavity of the support structure.
  • the support structure includes a diffusion lens attachment disposed on a surface of the second end and operable to removably attach the diffusion lens to the support structure, the diffusion lens attachment being embedded in a second embedding cavity of the support structure.
  • the upper portion of the diffusion lens comprises: a plurality of rear ridges extending radially from the center of the upper portion and for reflecting light emitted by the light source toward a rear area of the diffusion lens opposite a front area, the diffusion lens being located between the support structure and the front area relative to the longitudinal axis.
  • the upper portion of the diffusion lens further comprises: a plurality of front ridges extending radially from a center of the upper portion and for transmitting light emitted by the light source toward a front area of the lens.
  • each front ridge of the plurality of front ridges is planar.
  • each rear groove of the plurality of rear grooves forms a protruding edge opposite the interior volume of the lens so that the light emitted by the light source is reflected by total reflection effect.
  • each rear streak further comprises a portion provided with a reflective coating.
  • the front ridges are arranged alternately with the rear ridges.
  • the upper portion is curved toward the center of the upper portion such that a thickness of the upper portion increases from the center toward a periphery of the upper portion.
  • the present invention relates to a light bulb 1 comprising a support structure 2 supporting a base 3, a light source 4 and a light diffusing lens 5.
  • the support structure 2 comprises a porous metal substrate 23 representing at least 50% of the total volume of the support structure and serving as a heat sink.
  • porous metal substrate refers to any class of metallic materials that include pores and whose thermal conductivity properties allow its use as a heat sink.
  • Metal foams whether closed-cell or open-cell, are a preferred class of materials for the production of porous metal substrates.
  • the support structure 2 thus advantageously combines a first function which is to serve as a structural part to which other components (base, light source, diffusion lens, etc.) are fixed and a second function which is to serve as a heat sink.
  • the support structure 2 has mechanical properties (dimensions, rigidity, etc.) suitable for serving as a support base for the other elements.
  • the support structure 2 extends along a longitudinal axis L between a first end 21 intended to support the base 3 and a second end 22 intended to support the light source 4 and the light diffusion lens 5.
  • the diameter d of the first end 21 must be sufficient to accommodate the base 3 of the bulb.
  • the diameter D of the second end must be sufficient to accommodate the light source 4 and the diffusion lens 5.
  • the rigidity of the structure and in particular of the metal substrate must be sufficient to ensure that the other elements are held in place by the support structure and to prevent damaging structural deformations of the bulb during its use.
  • the porosity of the metal substrate is adapted on the one hand to guarantee the structural integrity of the support structure by providing sufficient rigidity, and on the other hand to maximize heat dissipation.
  • the porosity of the metal substrate is advantageously between 40% and 80%, preferably between 60% and 70%. According to one embodiment, the porosity of the metal substrate is 66%.
  • the heat dissipation properties of the porous metal substrate 23 are mainly determined by the heat exchange surface as well as by the limitation of pressure losses.
  • the porous metal substrate 23 represents a significant proportion of the total volume of the support structure 2. This proportion is advantageously at least 80%, or even at least 90% of the total volume of the support structure 2. Indeed, the more the metal substrate is proportionally present in the support structure, the more advantageous the heat dissipation properties are.
  • the entire support structure 2 can be composed of the porous metal substrate 23. It is thus possible to obtain a support structure that is as compact as possible while maximizing the effect of the heat sink since almost the entire support structure 2 is then composed of the porous metal substrate 23.
  • the diameter of the second end 22 of the support structure 2 is equal to the diameter of the diffusion lens 5. As illustrated in the Figure 3a , the diameter of the second end 22 of the support structure 2 can coincide with the diameter of the porous metal substrate 23 which is thus also equal to the diameter of the diffusion lens 5. This configuration makes it possible in particular to do without additional transition elements between the support structure 2 and the diffusion lens 5 which would add to the size of the bulb while not serving to dissipate heat.
  • the diameter D of the second end 22 is advantageously larger than the diameter d of the first end 21.
  • This characteristic illustrated in the Figure 1a , also allows the bulb to have an overall geometry close to traditional bulbs with a flared shape and thus be compatible with many existing lighting devices.
  • the support structure 2 has a height h, measured along the longitudinal axis L, greater than or equal to 50% of the total height of the bulb, i.e. of the assembly consisting of the support structure 2, the base 3 and the diffusion lens 5.
  • h measured along the longitudinal axis L
  • 50% of the total height of the bulb i.e. of the assembly consisting of the support structure 2, the base 3 and the diffusion lens 5.
  • an even larger portion of the body of the bulb also has a dissipation function thermal, a fortiori when the proportion of porous metallic substrate 23 included in the support structure 2 is very high.
  • the porous metal substrate 23 may be a metal foam. According to a preferred embodiment, it is an aluminum or copper foam.
  • the support structure 2 includes a base attachment 24 arranged on a surface of the first end 21 of the support structure and making it possible to attach the base 3 to the support structure.
  • this base attachment allows reversible attachment of the base 3 to the support structure 14 so as to allow easy replacement of the base if it is damaged or non-functional.
  • the base attachment 24 is advantageously embedded in a first embedding cavity of the support structure 2.
  • the base attachment 24 can for example be embedded directly in an embedding cavity of the porous metal substrate 23.
  • the base attachment 24 comprises a cylinder of which an external surface is threaded and corresponds to a thread of an internal surface of the base 3 so as to allow the base 3 to be screwed onto the base attachment 24.
  • the support structure 2 may also include a diffusion lens attachment 25 disposed on a surface of the second end 22 of the support structure 2 and for attaching the diffusion lens 5 to the support structure 2.
  • This diffusion lens attachment 25 typically allows reversible attachment of the diffusion lens so that it can be easily exchanged.
  • the diffusion lens attachment 25 comprises a cylinder, a portion of the surface of which external is threaded and corresponds to a thread on an internal surface of the diffusion lens so as to allow the diffusion lens 5 to be screwed onto the fixing 25.
  • the thread of the diffusion lens may be a section thread 55 as illustrated in the Figure 5b for example to enable injection-moulding of the diffusion lens.
  • the support structure 2 may also comprise an internal channel so as to connect the first end 21 to the second end 22. This channel may make it possible to electrically or electronically connect the light source arranged on the second end 22 to a power source and/or an electronic module, e.g. a PCB, arranged in the base 3 of the bulb.
  • a power source e.g. a PCB
  • the function of the light diffusion lens 5 is to diffuse the light emitted by the light source 4 outside the bulb 1.
  • the diffusion requirements can vary significantly. Indeed, the diffusion lens can influence the directivity of the bulb, i.e. the angular range over which the emitted light is concentrated, but also the intensity or colorimetry of the emitted light.
  • Directivity is a tricky parameter to optimize, especially when the bulb is designed to recreate light as natural as possible. Indeed, it is difficult to recreate conditions of light evenly distributed over a given volume using a point light source which cannot emit at 360° due to the presence of elements (e.g. structural elements of the bulb) near the source and interfering with the diffusion of light.
  • elements e.g. structural elements of the bulb
  • chip on board LEDs abbreviated COB
  • embedded chip LEDs can only emit directly over a range between 0° and 180° maximum because of the presence of the chip (and the support of this chip) which blocks diffusion towards the rear.
  • Diffusion lenses can be adapted to compensate for this lack of illumination towards the rear area of the bulb.
  • the present invention relates to a light diffusion lens 5 making it possible to directly illuminate at least a portion of a rear zone of the bulb on which it is arranged.
  • this light diffusion lens 5 comprises a transparent lateral portion 51 so as to at least partially transmit light emitted by a light source 4 towards a lateral zone outside the lens 5, as well as an upper portion 52. These two portions delimit an interior volume intended to accommodate the light source 4.
  • the upper portion 52 comprises a plurality of rear grooves 522 adapted to reflect the light emitted by the light source 4 towards a rear zone 54 of the diffusion lens 5.
  • the rear zone corresponding to the rear zone of the bulb that is to say the zone arranged on the side of the support structure 2 and the base 3 of the bulb as opposed to the front zone designating the zone located on the side of the diffusion lens 5 relative to a longitudinal axis L of the bulb 1.
  • the rear grooves form an optical surface for reflecting the light emitted by the light source 4.
  • each rear groove has two symmetrical surfaces forming a projecting edge with an angle substantially equal to 90° in the azimuthal direction, i.e. in the direction perpendicular to the longitudinal axis L.
  • the incident light arrives on the main optical surface with a very high angle of incidence (i.e. greater than 45°) and is reflected in total internal reflection instead of being transmitted, which makes it possible to dispense with metallization to obtain a reflection.
  • the use of two symmetrical surfaces makes it possible to redirect the light downwards, like a mirror. The first surface deflects the light by 90°, then the second surface deflects the light by a further 90°. This makes it possible to make a half-turn (180°) of the light, redirecting it largely, or even totally, towards the rear zone 54 of the lens.
  • the profile of each rear streak is optimized to obtain an intensity diagram ranging from 90° to 135° from the optical axis of the light source 4.
  • the rear grooves are made of a material having a high optical refractive index so that the total internal reflection (TIR) angle is reached more quickly.
  • the family of transparent thermoplastics is, for example, suitable for producing the rear grooves and, more generally, the diffusion lens as a whole.
  • Polycarbonate (PC) and polymethyl methacrylate (PMMA) are examples suitable for producing the diffusion lens 5.
  • each rear groove may be provided at least partially with a reflective coating in order to increase the reflection of the light emitted against each groove. It is thus, for example, possible to obtain edges whose apex angle is less than or greater than 90°, while maintaining a sufficient light reflection coefficient to send it back to the rear area.
  • the upper portion 52 of the diffusion lens 5 comprising, in addition to the rear grooves 522, a plurality of front grooves 521 extending radially from a center of the upper portion 5221 and making it possible to transmit the light emitted by the light source 4 to a front zone 53 of the diffusion lens 5.
  • These front grooves operate in light transmission and structure the beam of light emitted between 0° and 90° of the optical axis of the light source 4.
  • the sum of the contributions of the rear grooves and the front grooves forms an isotropic beam ranging from 0° to 135° of the optical axis of the light source 4.
  • the rear streaks are arranged alternately with the front streaks so as to homogenize the beam in the azimuthal plane.
  • the front ridges are planar in the azimuthal direction in order to minimize the refraction of the emitted light and thus to maximize the proportion of light emitted by the light source which passes through the diffusion lens towards the front zone of the lens.
  • the term "planar” here does not mean that each front ridge 521 is confined to a plane, but rather that each front ridge 521 can be obtained as a union of straight line segments, each of these segments extending in an azimuthal plane.
  • the height of the profile of these front ridges in a plane comprising the longitudinal axis L can vary.
  • the diffusion lens 5 may have several axes of symmetry, for example relative to an axis transverse 56 orthogonal to the longitudinal axis L.
  • the diffusion lens can be cylindrical, conical, polygonal or of any other geometry adapted to the needs or aesthetics required by its function.
  • the directivity of the bulb is particularly important because, due to its composition including a porous metal substrate, the support structure 2 is generally opaque and thus blocks a significant portion of the light towards the rear area of the bulb.
  • the diffusion lens may include a thread per section 55 allowing its attachment to a support structure and allowing its manufacture by injection.
  • the upper portion 52 of the diffusion lens 5 may be curved towards the center of the upper portion 5221 so that a thickness of the upper portion increases from the center towards a periphery of the upper portion.
  • This central hollow makes it possible in particular to improve the intensity profile according to the elevation angle.
  • this hollow makes it possible to limit certain homogeneity defects such as overintensity at 0° as well as drops in intensity over certain angular ranges, typically between 50° and 80°.
  • the diffusion lens 5 is advantageously combined with the support structure 2 as described above.
  • the support structure of the present invention is generally opaque due to the porous metal substrate 23 and prevents direct radiation from the light source 4 towards the rear area of the bulb.
  • the present invention also relates to a support structure 2 suitable for use in a light bulb 1 as described above.
  • Light bulb 1 Longitudinal axis L Support structure 2 Height of the support structure H First end 21 Diameter of the first end d Second end 22 Diameter of the second end D Porous metal substrate 23 Base fixing 24 Diffusion lens attachment 25 Cheek 3 Light source 4 Diffusion lens 5 Side portion 51 Upper portion 52 Front streak 521 Rear streak 522 Center of the upper portion 5221 Front zone 53 Back area 54 Thread by section 55 Transverse axis 56

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP23210746.6A 2023-11-17 2023-11-17 Beleuchtungsbirne Withdrawn EP4556784A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP23210746.6A EP4556784A1 (de) 2023-11-17 2023-11-17 Beleuchtungsbirne
PCT/IB2024/061406 WO2025104689A1 (fr) 2023-11-17 2024-11-15 Ampoule d'éclairage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23210746.6A EP4556784A1 (de) 2023-11-17 2023-11-17 Beleuchtungsbirne

Publications (1)

Publication Number Publication Date
EP4556784A1 true EP4556784A1 (de) 2025-05-21

Family

ID=88839827

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23210746.6A Withdrawn EP4556784A1 (de) 2023-11-17 2023-11-17 Beleuchtungsbirne

Country Status (2)

Country Link
EP (1) EP4556784A1 (de)
WO (1) WO2025104689A1 (de)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100060130A1 (en) * 2008-09-08 2010-03-11 Intematix Corporation Light emitting diode (led) lighting device
US20100109499A1 (en) * 2008-11-03 2010-05-06 Vilgiate Anthony W Par style lamp having solid state light source
US20130313959A1 (en) * 2010-12-22 2013-11-28 Tridonic Gmbh & Co Kg Porous Heat Sink LED Lamps
TW201350746A (zh) * 2012-03-22 2013-12-16 歐寇公司 電子元件之散熱裝置
US20140049951A1 (en) * 2012-08-14 2014-02-20 Samsung Electronics Co., Ltd. Condensing lens and lighting device including the same
EP2400214B1 (de) * 2010-06-23 2015-01-14 LG Electronics Inc. Beleuchtungsvorrichtung
KR20160134028A (ko) 2015-05-14 2016-11-23 최훈 고분자를 이용한 led 조명기구의 방열장치
CN107835928A (zh) * 2015-12-25 2018-03-23 林科闯 热交换材、装置及系统
CN107883362A (zh) 2017-11-23 2018-04-06 安徽腾奎智能科技有限公司 一种泡沫金属led散热器装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100060130A1 (en) * 2008-09-08 2010-03-11 Intematix Corporation Light emitting diode (led) lighting device
US20100109499A1 (en) * 2008-11-03 2010-05-06 Vilgiate Anthony W Par style lamp having solid state light source
EP2400214B1 (de) * 2010-06-23 2015-01-14 LG Electronics Inc. Beleuchtungsvorrichtung
US20130313959A1 (en) * 2010-12-22 2013-11-28 Tridonic Gmbh & Co Kg Porous Heat Sink LED Lamps
TW201350746A (zh) * 2012-03-22 2013-12-16 歐寇公司 電子元件之散熱裝置
US20140049951A1 (en) * 2012-08-14 2014-02-20 Samsung Electronics Co., Ltd. Condensing lens and lighting device including the same
KR20160134028A (ko) 2015-05-14 2016-11-23 최훈 고분자를 이용한 led 조명기구의 방열장치
CN107835928A (zh) * 2015-12-25 2018-03-23 林科闯 热交换材、装置及系统
CN107883362A (zh) 2017-11-23 2018-04-06 安徽腾奎智能科技有限公司 一种泡沫金属led散热器装置

Also Published As

Publication number Publication date
WO2025104689A1 (fr) 2025-05-22

Similar Documents

Publication Publication Date Title
EP1182396B1 (de) Leuchte auf Leuchtdiodenlichtausstrahlung gestützt
EP3286491B1 (de) Beleuchtungsvorrichtung mit led-filamenten
BE1026261B1 (fr) Dispositif d’éclairage vers le bas et lampadaire comprenant un module d’éclairage sur mât doté de celui-ci
EP1857732A1 (de) Vorrichtung zur Beleuchtung und/oder Signalisierung für Kraftfahrzeuge
WO2008125772A1 (fr) Dispositif d'eclairage a led
FR3015002A1 (fr) Dispositif d'eclairage
EP2772680B1 (de) Drehbares elektrisches Beleuchtungsgerät
FR2913484A1 (fr) Dispositif d'eclairage a led
EP3245560B1 (de) Diodenlichtquelle für einen projektor
EP3115684A1 (de) Lineare beleuchtungsvorrichtung mit linearer linse und seitlichen flügeln für die lichtdiffusion
EP2947380B1 (de) Licht-emissionsmodul mit elektrolumineszenzdiode und blende
EP4556784A1 (de) Beleuchtungsbirne
FR2950670A1 (fr) Dispositif d'eclairage indirect d'une surface a diodes electroluminescentes
EP0881514A1 (de) Optisches Koppelelement zur räumlichen Begrenzung und Homogenisierung eines Strahls mit grossem Öffnungswinkel
FR3045777A1 (fr) Filament led avec regulateur de courant et dispositif d'eclairage a filaments led
EP3015758A1 (de) Lineare beleuchtungsvorrichtung mit elektrolumineszenzdioden und linearer linse
FR2995664A3 (fr) Lampe munie d'un dispositif dissipateur de chaleur.
FR2944853A1 (fr) Dispositif d'eclairage a del incorporant un support favorisant la dissipation thermique.
EP3144589B1 (de) Leuchtvorrichtung, insbesondere für kraftfahrzeug, und scheinwerfer, der eine solche vorrichtung umfasst
EP3220044B1 (de) Lineare beleuchtungsvorrichtung mit linearer linse und seitlichen flügeln für die lichtdiffusion
FR2962783A1 (fr) Dispositif d'eclairage a dissipation thermique
FR2790443A1 (fr) Dispositif de balisage au sol pour aeroport
FR2942527A1 (fr) Dispositif d'eclairage domestique
FR3042587B1 (fr) Collimateur optique a encombrement reduit pour generer une petite tache d'eclairage
FR2961290A1 (fr) Dispositif d'eclairage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20251122