WO2009080115A1 - Ensemble lampe et élément de guidage de lumière - Google Patents

Ensemble lampe et élément de guidage de lumière Download PDF

Info

Publication number
WO2009080115A1
WO2009080115A1 PCT/EP2007/064449 EP2007064449W WO2009080115A1 WO 2009080115 A1 WO2009080115 A1 WO 2009080115A1 EP 2007064449 W EP2007064449 W EP 2007064449W WO 2009080115 A1 WO2009080115 A1 WO 2009080115A1
Authority
WO
WIPO (PCT)
Prior art keywords
led
lamp
lamp body
base
lamp assembly
Prior art date
Application number
PCT/EP2007/064449
Other languages
English (en)
Inventor
Cornelis Mr. Born
Jos Mr. Vogels
Original Assignee
Born Cornelis Mr
Vogels Jos Mr
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 Born Cornelis Mr, Vogels Jos Mr filed Critical Born Cornelis Mr
Priority to PCT/EP2007/064449 priority Critical patent/WO2009080115A1/fr
Publication of WO2009080115A1 publication Critical patent/WO2009080115A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • 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
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • 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
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/66—Details of globes or covers forming part of the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • 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
    • F21V17/04—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the light source
    • 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
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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 lamp assembly, comprising a lamp body adapted to fit in a lamp fitting, wherein the lamp body comprises at least a LED or LED-like element as light source, wherein the LED is mounted on a base such that the light from the LED is emitted by the lamp body in at least a direction away from a side of the base on which the LED is mounted.
  • Such a lamp assembly is known from EP 1 852 648.
  • This document discloses a LED lighting lamp tube which comprises a transparent tube body in which a row of LEDs is mounted on a base.
  • the known tubular lamp is adapted such that it can directly replace a conventional fluorescent lamp, for example, without replacing the lamp fitting.
  • Benefits of LEDs are a long lifetime and low energy consumption thereof.
  • a disadvantage of the known lamp assembly is that the light emission of the LEDs measured at a certain distance from the lamp body is relatively low.
  • the present invention aims to provide a lamp assembly having improved light performance.
  • the assembly further comprises a light guiding member including at least a deflection wall for deflecting at least a portion of the light exiting from the lamp body, wherein in an assembled condition of the lamp assembly the deflection wall projects from a location close to the LED in a direction away from the side of the base on which the LED is mounted.
  • the lamp assembly according to the invention is a surprising and simple solution to improve the light performance.
  • the base including the LED is surrounded by a circumferential wall of the lamp body, whereas an end portion of the deflection wall is adjacent to the exterior of the circumferential wall. This means that the LEDs and the base are shielded from the environment by the circumferential wall.
  • the base may be a plate-shaped element extending within a virtual plane, wherein the virtual plane intersects the circumferential wall at an intersection line, and wherein the end portion of the deflection wall is located at the intersection line.
  • the base may be opaque such that light will be emitted only in a direction away from the base on the side on which the LED is mounted.
  • a conventional fluorescent tube light for example, comprises a lamp body which emits light in all radial directions thereof. If a light guiding member as applied according to the invention would be applied on a fluorescent tube light this might increase the light flux to a certain extent, but a portion of the radially emitted light will still be emitted in opposite direction of the deflection wall projecting from the lamp body. Therefore, light guiding members for conventional fluorescent tube lights generally are back reflectors having a certain distance with respect to the lamp body. Thus, the improved light performance as reached with the assembly according to the invention will not be achieved with a conventional fluorescent tube light.
  • the light guiding member is engageable to the lamp body, which means that the light guiding member is supported by the lamp body.
  • the light guiding member may be separated from the lamp fitting.
  • the deflection wall may be formed by a plate. This can be made of a light-weight material, for example.
  • the light guiding member may comprise at least two opposing deflection walls, each projecting from locations close to the LED in directions away from the side of the base on which the LED is mounted. This provides the possibility to focus the light exiting from the lamp body still better.
  • the deflection walls extend in diverging directions as seen from the LED, since it appears to improve the light intensity at a distance of the lamp body.
  • the lamp body may have a tubular circumferential wall about the base including the LED and a circular cross section.
  • the base is provided with a set of LEDs so as to increase the light intensity.
  • the deflection wall may be tiltable with respect to the
  • the light guiding member may be removably engageable to the lamp body by fixing means. This facilitates replacement of the light guiding member in case of replacement of the lamp body.
  • the fixing means comprise at least a clamping element which can be clamped on an exterior portion of the lamp body, since this does not require additional fixing means such as adhesives, for example.
  • the invention is also related to a light guiding member for a lamp body including at least a LED as light source, comprising fixing means for attaching the light guiding member to the lamp body and at least a deflection wall, wherein the fixing means have internal contact locations for contacting the lamp body when assembled, which contact locations form an enveloping plane of a virtual body, whereas the deflection wall projects from said enveloping plane.
  • Fig. 1 is a perspective view of a part of an embodiment of a lamp assembly according to the invention in disassembled condition.
  • Fig. 2 is a cross-sectional view of the lamp body of Fig. 1 on a larger scale and in assembled condition with the light guiding member.
  • Fig. 3 is a frontal view and a cross sectional view of an alternative embodiment of the lamp assembly according to the invention.
  • Fig. 4 are views similar to Fig. 3 of alternative embodiments .
  • Fig. 1 shows a light guiding member 1 and a lamp body 2, forming an embodiment of a lamp assembly according to the invention.
  • the lamp body 2 is receivable by a lamp fitting (not shown) .
  • the lamp body 2 has a tubular outer shape having a circular cross section, see Fig. 2.
  • the lamp body 2 has the same dimensions and outer electrical connections 3 as a conventional fluorescent tube light. Therefore, the lamp body 2 is receivable by a standard lamp fitting.
  • the lamp body 2 is provided with a set of LEDs 4, which form individual light sources.
  • the LEDs 4 may be replaced by LED-like elements which are also small individual light sources.
  • the LEDs 4 are mounted on a base 5 located in the interior of the lamp body 2, see Fig. 2.
  • the base 5 has a flat plate shape. It is is fixed to the lamp body 2 and extends in longitudinal direction of the lamp body 2.
  • the LEDs 4 and the base 5 are surrounded by a circumferential wall 6 of the lamp body 2.
  • the circumferential wall 6 is transparent in this case.
  • the base 5 does not transmit light such that the emitted light of the LEDs 4 is directed away from the base 5 at the side thereof on which the LEDs 4 are mounted.
  • the base 5 is fixed within the lamp body 2 such that it has a fixed location with respect to the circumferential wall 6.
  • the embodiment in Fig. 2 shows that the light guiding member 1 includes two opposing deflection walls 7 in the form of diverging plates as seen from the base 5 when assembled.
  • Each deflection wall 7 has a proximal end portion 8 located adjacent to the lamp body 2 and close to the base 5, and a distal end portion 9 located remote from the lamp body 2, in an assembled condition of the lamp assembly.
  • the deflection walls 7 project from the lamp body 2 near end portions of the base 5 in the assembled condition.
  • the base 5 extends within a virtual plane, whereas the virtual plane intersects the circumferential wall 6 at an intersection line, and the proximal end portion 8 of the deflection wall 7 is located at the intersection line.
  • the centre line of the cylinder lies within the base 5 and the proximal end portion 8 is located at the intersection line. It is also found that the length of the deflection wall 7 from the proximal end portion 8 to the distal end portion 9 affects the light performance.
  • the deflection walls 7 deflect a portion of the light exiting from the lamp body 2.
  • the proximal end portions 8 of the deflection walls 7 are adjacent to the exterior circumferential wall 6 of the lamp body 2 and close to the location in which the base 5 is adjacent to the circumferential wall 6 of the lamp body 2.
  • light emitted from the LEDS 4 exiting the lamp body 2 close to the base 5 is directly deflected by the deflection walls 7. Therefore, it is preferred to locate the proximal portions 8 of the deflection walls 7 close to the LEDS 4, and in this case close or adjacent to the lamp body 2 and close to the base 5.
  • gaps between the lamp body 2 and the proximal portions 8 are conceivable, of course.
  • the light guiding member 1 is removably engageable to the lamp body 2 by fixing means.
  • the fixing means are formed by a clamping element 10 which can be clamped on the exterior of the lamp body 2.
  • the clamping element 10 and the deflection walls 7 are integrated in this embodiment of the light guiding member 1.
  • the light guiding member 1 may be manufactured by starting with a flat plate and bending it such that it obtains the shape of the light guiding member 1 as shown in Fig. 1. Of course, numerous alternative shapes and dimensions of the fixing means are conceivable.
  • the clamping element 10 may be opaque. In practice, the base 5 may be opaque, as well, such that the clamping element 10 as shown in Fig. 2 does not need to be opaque in order to avoid light emission from the lamp body 2 at the side of the base 5 opposite to that side on which the LEDs 4 are mounted.
  • the fixing means strongly engage to the lamp body 2; it is, for example, possible to suspend the light guiding member 1 from the lamp body 2 without really fixing it thereto.
  • the advantage of plate-like fixing means 10 as shown in Fig. 1 and 2 is that the light guiding member 2 can be easily fit to the lamp body 2 before the lamp body 2 is fixed to a lamp fitting. In general, existing lamp fittings and lamp body dimensions are such that they allow to dispose a plate between the lamp fitting and the lamp body 2. It is also possible to make the fixing means such that the cross-section of the clamping element 10 as shown in Fig. 1 forms a part of a circle having a circumference slightly greater than half of a circle.
  • the light guiding member 1, when the assembly is in the assembled condition may be rotatable with respect to the lamp body 2.
  • the deflection walls 7 may be tiltable with respect to the fixing means such that the deflection walls 7 are tiltable with respect to the lamp body 2 and the LEDs 4 when the lamp assembly is in the assembled condition. This is illustrated by a tilt angle ⁇ in Fig. 2. This means that the user can influence the light intensity at a certain distance from the lamp body 2.
  • the fixing means of the light guiding member 1 may comprise internal contact locations 11 for contacting the lamp body 2 when assembled, wherein the contact locations 11 form an enveloping plane of a virtual body.
  • the contact locations 11 are formed by an internal wall of the partly circular clamping element 10, and the virtual body may be formed by a cylinder having a circular cross-section.
  • Fig. 3 and 4 show alternative embodiments of a lamp assembly according to the invention.
  • the embodiments comprise one or more lamp bodies 2 and have different shapes.
  • the lamp bodies are received by lamp fittings 12.
  • the lamp assemblies are provided with deflection walls 7 which have a diverging angle ⁇ with respect to each other. It appears that the preferred angle ⁇ lies in the range 45 - 55°, since the light intensity at a location spaced from and perpendicular to the base 2 shows good performance .
  • the invention provides a lamp assembly including LEDs in a lamp body, which creates improved light performance.
  • the light guiding member may be arranged such that it is suitable for a lamp body having a shape which differs from a tubular cylinder, for example an elongated lamp body having a rectangular cross-section.
  • the base on which the LEDs are mounted may have an alternative shape and does not need to be opaque.

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)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

La présente invention concerne un ensemble lampe qui comprend un tube de lampe (2) conçu pour se loger dans une fixation de lampe, le tube de lampe (2) comprenant au moins une LED (4) ou un élément similaire en tant que source lumineuse. La LED (4) est montée sur une base (5) de sorte que la lumière provenant de la LED (4) est émise par le tube de lampe (2) dans au moins une direction qui s'éloigne d'un côté de la base (5) sur laquelle la LED (4) est montée. L'ensemble comprend en outre un élément de guidage de lumière (1) qui comprend au moins une paroi de déflexion (7) destinée à défléchir une partie de la lumière qui sort du tube de lampe (2). Dans un état assemblé de l'ensemble lampe, la paroi de déflexion (7) fait saillie d'un emplacement proche de la LED dans une direction qui s'éloigne du côté de la base (5) sur laquelle la LED (4) est montée.
PCT/EP2007/064449 2007-12-21 2007-12-21 Ensemble lampe et élément de guidage de lumière WO2009080115A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/064449 WO2009080115A1 (fr) 2007-12-21 2007-12-21 Ensemble lampe et élément de guidage de lumière

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/064449 WO2009080115A1 (fr) 2007-12-21 2007-12-21 Ensemble lampe et élément de guidage de lumière

Publications (1)

Publication Number Publication Date
WO2009080115A1 true WO2009080115A1 (fr) 2009-07-02

Family

ID=39731693

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/064449 WO2009080115A1 (fr) 2007-12-21 2007-12-21 Ensemble lampe et élément de guidage de lumière

Country Status (1)

Country Link
WO (1) WO2009080115A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010018557A1 (de) * 2010-04-28 2011-11-03 Jürgen Plaggemeier Beleuchtungsvorrichtung für stauberfüllte Räume
JP2013012402A (ja) * 2011-06-29 2013-01-17 Panasonic Corp 照明器具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2410037A1 (de) * 1973-03-06 1974-09-19 Eero Dr Halonen Reflektor fuer roehrenfoermige lichtquellen, insbesondere fuer leuchtroehren
US5343120A (en) * 1991-10-09 1994-08-30 Compania Kelmas S.A. Device applicable to fluorescent tubes reducing the consumption of energy without variance of the luminosity
WO2002048606A2 (fr) * 2000-12-11 2002-06-20 3M Innovative Properties Company Luminaire comprenant une source lumineuse allongee et un retroreflecteur
DE20319640U1 (de) * 2003-12-02 2004-03-18 Ho, Sung Tao LED-Lampenröhre
WO2004031818A2 (fr) * 2002-10-02 2004-04-15 3M Innovative Properties Company Assemblage de source lumineuse et guide de lumiere leger pour affichage eclaire

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2410037A1 (de) * 1973-03-06 1974-09-19 Eero Dr Halonen Reflektor fuer roehrenfoermige lichtquellen, insbesondere fuer leuchtroehren
US5343120A (en) * 1991-10-09 1994-08-30 Compania Kelmas S.A. Device applicable to fluorescent tubes reducing the consumption of energy without variance of the luminosity
WO2002048606A2 (fr) * 2000-12-11 2002-06-20 3M Innovative Properties Company Luminaire comprenant une source lumineuse allongee et un retroreflecteur
WO2004031818A2 (fr) * 2002-10-02 2004-04-15 3M Innovative Properties Company Assemblage de source lumineuse et guide de lumiere leger pour affichage eclaire
DE20319640U1 (de) * 2003-12-02 2004-03-18 Ho, Sung Tao LED-Lampenröhre

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010018557A1 (de) * 2010-04-28 2011-11-03 Jürgen Plaggemeier Beleuchtungsvorrichtung für stauberfüllte Räume
DE102010018557B4 (de) * 2010-04-28 2012-05-24 Jürgen Plaggemeier Beleuchtungsvorrichtung für stauberfüllte Räume
JP2013012402A (ja) * 2011-06-29 2013-01-17 Panasonic Corp 照明器具

Similar Documents

Publication Publication Date Title
US7712918B2 (en) Light distribution using a light emitting diode assembly
US9551480B2 (en) Tubular LED lamp with flexible circuit board
KR101805896B1 (ko) Ｌｅｄ 광 모듈
US7375382B2 (en) Direct optical light guide
US20110228549A1 (en) Headlamp bulb type light pipe
WO2012020830A1 (fr) Lampe et composant optique
JP2006054092A (ja) 車両用標識灯
US10030826B2 (en) Light beacon lens
CN100554766C (zh) 具有光管的发光二极管灯
JP2012028232A (ja) 半導体発光素子を光源とするランプ
KR101487383B1 (ko) 조합형 리플렉터
WO2009080115A1 (fr) Ensemble lampe et élément de guidage de lumière
EP2179216B1 (fr) Dispositif d'éclairage, en particulier dispositif supplémentaire de signalisation lumineuse pour véhicules prioritaires de sauvetage et de secours
US10060584B2 (en) LED luminaire
JP4021458B2 (ja) 照明ユニットおよび照明装置
KR20100100450A (ko) 엘이디 형광등
US20160334073A1 (en) Flexible LED Lamp Assembly
JP2012256570A (ja) Ｌｅｄ照明器具
CN109323173B (zh) 一种户外灯具
JP4300240B2 (ja) 照明ユニットおよび照明装置
JP2010244835A (ja) 照明ランプ装置
DK2587118T3 (en) LED ceiling light
JP2010244938A (ja) 照明器具
KR100920969B1 (ko) 천장 매립형 램프하우징
JP2012104327A (ja) 照明器具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07858060

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2007858060

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07858060

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 07858060

Country of ref document: EP

Kind code of ref document: A1