EP2491295A1 - Lampe linéaire - Google Patents

Lampe linéaire

Info

Publication number
EP2491295A1
EP2491295A1 EP10784300A EP10784300A EP2491295A1 EP 2491295 A1 EP2491295 A1 EP 2491295A1 EP 10784300 A EP10784300 A EP 10784300A EP 10784300 A EP10784300 A EP 10784300A EP 2491295 A1 EP2491295 A1 EP 2491295A1
Authority
EP
European Patent Office
Prior art keywords
circuit board
line lamp
piston
lamp according
printed circuit
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
EP10784300A
Other languages
German (de)
English (en)
Other versions
EP2491295B1 (fr
Inventor
Werner Leineweber
Friedbert Schacherer
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.)
Osram GmbH
Original Assignee
Osram GmbH
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 Osram GmbH filed Critical Osram GmbH
Publication of EP2491295A1 publication Critical patent/EP2491295A1/fr
Application granted granted Critical
Publication of EP2491295B1 publication Critical patent/EP2491295B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • 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
    • 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 invention relates to a line lamp according to the preamble of patent claim 1.
  • Document DE 1 919 505 U discloses such a line lamp.
  • This is of the type Linestra of Osram.
  • the line lamp in this case has an elongated glass bulb, in which a filament is received, which extends et ⁇ wa along a longitudinal axis of the glass bulb. Contacting the filament is via two radial pistons on glass formed base, which simultaneously serve to hold the line ⁇ tion lamp in a lamp holder.
  • the object of the present invention is to provide a line lamp with a low power consumption and substantially the same luminous properties as conventional line lamps.
  • a line lamp has an elongated piston, in particular a glass bulb.
  • a base is provided for electrical see-contacting and for holding the line lamp.
  • at least one light emitting diode is arranged as a light source.
  • This solution has the advantage that such lines ⁇ lamp has an extremely low energy consumption in comparison to the initially mentioned prior art, the advantage. Furthermore, advantageously with the at least one light-emitting diode, a substantially identical emission characteristic as with conventional line lamps with an incandescent filament can be achieved.
  • the base is preferably arranged radially on a side facing away from the Hauptab ⁇ beam direction of the light emitting diode.
  • the at least one light-emitting diode is arranged on a printed circuit board accommodated in the piston, in particular an FR4 board.
  • the LED is easy to contact and durable.
  • the circuit board is elongated commercialbil ⁇ det and thus adapted to the elongated piston of the line lamp.
  • the printed circuit board offers a large area for a plurality of light-emitting diodes.
  • the plurality of LEDs By the plurality of LEDs, a high luminosity of the line lamp is made possible and it can be achieved a more accurate adaptation to the emission characteristics of a conventional line lamp.
  • the piston is filled with a filling gas, in particular helium, which has good heat conduction properties.
  • the LEDs can be arranged on a diode side of the circuit board.
  • the electronic components for the electrical supply and control of the light-emitting diodes in particular comprise at least one linear linear regulator.
  • a particularly simple and compact, in particular flat driver for the LEDs can be realized whereby the external dimensions of conventional line lamps can be maintained and the light distribution of conventional line lamps can be replicated particularly well.
  • the underside is arranged closer to an inner lateral surface of the piston compared to Diodensei ⁇ te the circuit board.
  • At least one heat sink in particular a sheet metal, in particular a copper sheet, is provided in the bulb.
  • the at least one heat sink can be designed such that so that the circuit board is held.
  • a sheet is arranged in each case on an end section of the printed circuit board. This is particularly advantageous when melting the printed circuit board in the glass bulb.
  • the sheet metal is preferably angled, in particular in an end region of the printed circuit board. This allows a good adaptation to the contour of the circuit board can be achieved.
  • the angled sheet metal is disposed on the lower ⁇ a side of the printed circuit board and affixed thereto, and a holding limb arranged approximately in a parallel spacing from a transverse edge of the printed circuit board Blechschen- kel.
  • the retaining leg has at its longitudinal edges at least two cantilevered support arms, via which the retaining leg can be clamped to the circuit board, and wherein the support arms are supported in particular for supporting the circuit board on an inner circumferential surface of the piston.
  • a support arm is formed on the holding leg at a direction away from the sheet ⁇ thigh transverse edge, which is arranged such that it holds the circuit board in the piston together with the at least two holding arms.
  • the support arm may have a V-section, in which the circuit board approximately tapered section a Is formed opening through which a power supply for the circuit board can be passed. This is fixed in a direction of displacement away from the circuit board through the opening.
  • at least one spacer is arranged at ⁇ on the underside of the circuit board.
  • the spacer is before ⁇ given formed as a sheet metal bent part and can also be used for heat dissipation.
  • the spacer may be glued to the circuit board and serve to hold the circuit board.
  • the light-emitting diodes are arranged in at least one row extending approximately parallel to the lamp longitudinal axis, where ⁇ is achieved by a uniform emission characteristic of the line lamp.
  • the light-emitting diodes can also be arranged in two mutually parallel rows extending parallel distance, whereby a better cooling of the LEDs compared to non-spaced rows is achieved by the distance between the rows.
  • the piston can be coated to achieve a high aesthetic ⁇ cal appearance.
  • the line lamp can be produced inexpensively if the piston has a comparatively low filling gas pressure.
  • a phosphor is at least partially as a coating applied to a piston inner or piston outer surface of the piston.
  • the light-emitting diodes can have different light colors and color temperatures, wherein in particular the light color is converted by controllable LED bands, in particular RGB bands.
  • the LED strips may, for example, be light-emitting diodes arranged on a carrier foil, wherein they emit cold white, warm white, blue, red, green or RGB.
  • FIG. 1 is a schematic longitudinal sectional view of a Li ⁇ nienlampe according to an embodiment
  • FIG. 2 is a schematic cross-sectional view of the linear lamp of FIG. 1
  • FIG. 3 shows an enlarged detail of an end section of the line lamp from FIG. 1
  • Fig. 4 is a perspective view of the end portion of Fig. 3;
  • Fig. 5 is a schematic representation of the LED drive circuit of a line lamp according to the invention
  • FIG. 6 is a schematic longitudinal sectional view of a Li ⁇ nienlampe according to another embodiment 7 is a perspective view of the end portion of FIG. 7th
  • FIG. 1 shows in a schematic longitudinal sectional view of a line lamp 1 of the invention according to an exporting ⁇ approximately example.
  • Previous line lamps in the prior Tech ⁇ nik have a filament, resulting in a high energy consumption.
  • Types of incandescent filament lamps are, for example, Linestra from OSRAM, Philinea from Philips and Raiina from Radium. Line lamps are used for example in living rooms, such as in a bathroom or kitchen or as a light bar in cabinets.
  • the line lamp 1 from FIG. 1 has a tubular elongated piston 2. This is made of glass, which advantageously has substantially no aging effect due to external or internal radiation exposure (UV resistance). From an outer circumferential surface 4 of the piston 2 and the glass bulb in a collar about moving ⁇ che radial direction of the base 6, 8 of which are tung in the longitudinal line lamp 1 spaced apart. About this, the line lamp 1 can be used in a receptacle of a her ⁇ conventional lamp suitable for line lamps and electrically contacted.
  • the base 6, 8 On their front and back in Figure 1, each have a depression 10 via which they are engaged behind by a corresponding element of a receiving device of the lamp for mounting. On an underside of the base 6, 8 in FIG. projections 12 formed.
  • the above-described embodiment of the line lamp 1 preferably corresponds to a standard.
  • the printed circuit board 14 is an FR4 board which is mounted on untenste ⁇ starting explained fastening means.
  • the circuit board 14 may consist of a good heat-conducting material such as aluminum or ceramic at least in sections, but this leads to hö ⁇ heren costs.
  • An axial length of the printed circuit board 14 is slightly shorter than an axial length of the piston 2, whereby end portions 18, 20 of the printed circuit board 16 are spaced from a respective end face 22 and 24 of the piston 2.
  • the LEDs 16 are arranged fixedly from one of the sockets 6, 8 repellent diode side 26 of the circuit board 14 approximately parallel to the longitudinal direction in a row in a row.
  • On a side facing away from the diode side 26 underside 28 of the circuit board 14 are electronic components or electronic elements 30, two of which by way of example two are shown in the figure 1, for electrical supply and control of the LEDs 16 are arranged.
  • FIG. 2 shows the line lamp 1 in a schematic enlarged cross-sectional view with a sectional plane through the sheet 40 of FIG. 1.
  • a distance between the diode side 26 of the printed circuit board 14 and an inner circumferential surface 32 of the piston 2 is greater than the distance between the bottom 28 to the inner circumferential surface 32 of the piston 2, wherein the distance is measured in each case in an approximately orthogonal direction to the circuit board 14.
  • a distance from longitudinal edges ⁇ of the circuit board 14 to the inner circumferential surface 32 is approximately equal, which also applies to the distance between transverse edges and the end faces 22, 24 in FIG.
  • a width of the printed circuit board 14 in Figure 2 corresponds approximately to the width of the base 6, 8.
  • the piston 2 in the figure 1 is filled with helium as a good heat-conducting filling gas with a comparatively low filling pressure.
  • a low filling gas pressure is advantageous in terms of production technology and leads to low costs. Due to the good heat-conducting filling gas is in use of the line lamp 1, a large amount of heat from the LEDs 16 and the electronic elements 30 for cooling to the piston 2 can be discharged and can be discharged from this to the environment.
  • the heat flow is shown by arrows 37 in FIG. 1 by way of example.
  • the large-area design of the printed circuit board 14 and the Pistons 2 large heat transfer areas to the filling gas ge ⁇ create.
  • This is approximately at right angles angled and has an approximately pa ⁇ rallel attached to the underside 28 of the printed circuit board 14 holding leg 42.
  • a further plate leg 44 extends approximately in Parallel distance to a transverse edge 47 of the circuit board 16 in the figure 3 upwards.
  • the sheet 40 generated by the configuration and arrangement such little or no shadowing in the use of the line lamp 1 and offers a large heat transfer surface to surrounded ⁇ the gas.
  • a holding arm 52 or 54 pointing away from the base 6, 8 projects in the direction of the inner lateral surface 32 of the piston 2.
  • the holding arms 50 and 52 are V-shaped to each other net and are each based with their pointing away from the plate 40 end portion 56 and 58 on the mecanicmantelflä ⁇ che 32 of the piston 2 from.
  • the support arms 50 and 52 are bent with a radius such that in each case an arc portion 64 and 66 is formed, which concave on its side facing towards the circuit board 14 side is.
  • the plate 40 is thus connected via the retaining arms 52, 54 with the circuit board 14 non-positively, positively and / or cohesively.
  • a support arm 70 which extends away from the underside 28 of the printed circuit board 14 and is supported on the inner lateral surface 32 of the piston 2, is formed on a transverse edge 68 of the retaining leg 42 facing away from the sheet metal leg 44. Since the plate 38 is formed corresponding to the plate 40, the circuit board 14 is supported on the end ⁇ sections 18 and 20 of the sheets 38 and 40 via de ⁇ ren respective holding arms 52, 54 and their respective support arm 70 within the piston 2.
  • the support arm 70 of the sheets 38 and 40 see Figure 3, is designed at its side facing away from the circuit board 14 end portion 72 is approximately W-shaped, whereby a towards the circuit board 14 facing V-section 74 is formed. This is in each case in the region of the base 6, 8 arranged.
  • a serving for contacting power supply 76 extending from the base 8 in Figure 3 to the circuit board 14th extends is passed through an opening, not shown, in the bending region of the V-section 74.
  • the opening is configured such that the current-to ⁇ guide blo ⁇ ckiert and only in the direction to the circuit board 14 through the opening 76 is moved through sliding in a direction away from the circuit board 14 through the opening of the V-portion 74th
  • the V-section 74 is thus formed according to a cutting clamp.
  • the left-hand sheet 38 in FIG. 1 is likewise designed in this way, as a result of which a power supply 78 is likewise fixed by the latter.
  • FIG 4 a perspective view of the end portion shown in Figure 3 of the 20 lines ⁇ lamp 1 is shown.
  • the end portions 56, 58 of the holding arms 52, 54 are slightly curved, whereby the Endab ⁇ sections 56, 58 with an approximately convex surface at least partially abut the inner circumferential surface 32.
  • the width of the support arm 70 corresponds approximately to half the width of the transverse edge 68 of the retaining leg 42.
  • the support arm 70 is thereby formed approximately centrally from the transverse edge 68 ⁇ .
  • the width of the support arms 52, 54 approximately corresponds to that of the support arm 70, which extend approximately from an end region of the longitudinal edges 48, 50, see Figure 2, adjacent to the transverse edge 68 from. It is conceivable for the metal sheets 38, for For as SMD components ⁇ form 40 to be easy to connect these to the circuit board fourteenth
  • FIG. 5 shows a schematic illustration of the LED driver circuit 71 of a line lamp 1 according to the invention.
  • the circuit has two parallel-connected linear linear regulators 72 for supplying power to the LEDs 16, which enable a simple, flat and compact design.
  • linear linear regulators 72 for supplying power to the LEDs 16, which enable a simple, flat and compact design.
  • other embodiments are conceivable, in particular those with only one linear linear regulator.
  • the arrangement shown is also characterized by good EMC properties.
  • Fig. 6 shows the schematic longitudinal sectional view of a line lamp according to another embodiment.
  • the line lamp 1 is similar in structure to that of Figure 1 and has a tubular elongated piston 2 made of glass. From an outer circumferential surface 4 of the piston 2 or glass piston collar approximately in a same radial direction of base 6, 8, which are spaced apart in the longitudinal direction of the line lamp 1. About this, the line lamp 1 is used in a receptacle of a conventional lamp suitable for line lamps and electrically contacted.
  • the base 6, 8 each have a recess 10 through which they are engaged behind by a corresponding element of a receiving device of the lamp for mounting.
  • contact projections 12 are formed for electrical contacting.
  • the above-described embodiment of the line lamp 1 preferably corresponds to a standard.
  • an elongated circuit board 14 with a plurality of LEDs ⁇ light emitting diodes or LEDs 16 - for simplicity, only a single LED is provided with a reference numeral - is used.
  • An axial length of the printed circuit board 14 is slightly shorter than an axial length of the piston 2, whereby end ⁇ sections 18, 20 of the circuit board 16 are spaced to a respective end face 22 and 24 of the piston 2.
  • the LEDs 16 are fixedly arranged in a row approximately parallel to the longitudinal direction from a diode side 26 of the printed circuit board 14 which is deflected by the sockets 6, 8.
  • On a side facing away from the diode side 26 underside 28 of the circuit board 14 are electronic components or electronic elements 30, two of which are exemplified in the figure 6, arranged for the electrical supply and control of the LEDs 16.
  • the circuit board 14 is fixed by means of two spacers 45 in the glass bulb 2, to which the spacers 45 are glued to the circuit board 14 and the glass bulb 2.
  • For electrical contacting serve contact devices 49, which are formed as sheet metal bent parts. In the end ⁇ range
  • the piston 2 is filled with helium as a good heat-conducting filling ⁇ gas with a comparatively low filling pressure.
  • the heat flow thus proceeds in the manner exemplified by arrows 37.
  • the large-area design of the printed circuit board 14 and the piston 2 creates large heat transfer areas for the filling gas.
  • the preparation of the line lamp 1 takes place in the above-ge ⁇ marked manner, that is spaced from the piston 2 reflowed circuit board 14 from the group consisting of glass bulb. 2
  • heat sinks or heat sinks made of a cost-effective copper sheet 77, 48 are arranged. In these areas occur in the production of the highest temperatures.
  • the sheets 77,48 are angled approximately at right angles and have an approximately paral ⁇ lel to the bottom 28 of the circuit board 14 fixed holding leg 42. Another sheet leg 44 extends approximately parallel to a transverse edge 47 of the circuit board 14 upwards.
  • the plates 77, 48 generate by the design and arrangement such little or no shadowing in the use of the line lamp 1 and provides a large heat transfer surface to the surrounding gas.
  • Fig. 7 shows a perspective view of the Endab ⁇ section of FIG. 6.
  • the contact device 49 consists of a bent sheet metal with a V-shaped receptacle for a contact wire 79.
  • the spacer 45 is formed from a sheet bent in a U-shape and bonded to the piston 2.
  • Each of these components is a Blechbie juxtaposeil and can therefore be used advantageously for heat dissipation. It is conceivable to form the plates 77, 48 as well as the spacers 45 and the contact devices 49 as SMD components in order to simply connect them to the printed circuit board 14. Thus, the heat from the circuit board 14 can be dissipated particularly well.
  • the brewery - Lö ⁇ te of the sheets 77,48 corresponds in the embodiment to ⁇ approaching the width of the circuit board 14, which allows a particularly ⁇ simple handling and good heat dissipation.
  • the width of the metal sheets is greater than the width of the printed circuit board 14 77,48, whereby the heat dissipation verbes ⁇ sert is, or embodiments in which the width of the sheets 77,48 is less than the width of the Circuit board 14, whereby the handling is improved.
  • the left-hand plate 77 in FIG. 6 is designed corresponding to the plate 48.
  • the printed circuit board 14 may comprise thermally conductive materials, which however would lead to higher costs in both cases. In any case, in line of the inventive lamp 1 on heat sink waived ⁇ to, resulting in a low weight.
  • the existing of glass piston 2 is characterized by a high aesthetic appearance compared to a plastic piston.
  • the aesthetic appearance can be further increased and the luminous properties and the Abstrahlcha ⁇ characteristic of the line lamp 1 can be changed.
  • glass has a higher light transmission than plastic.
  • the LEDs 16 are deviating from the exemplary embodiment arbitrarily arranged. It can also be different Light colors and color temperatures (for example, multicolored line lamps 1) are created.
  • the line lamp 1 has for example a lamp Leis ⁇ device (without driver) is between 4 and 5 W, and a light Ström 250-280 of Im, and such a luminous flux corresponding to the line of a conventional lamp having a filament.
  • a line lamp with a tubular bulb made of glass.
  • a tubular bulb made of glass.
  • at least one base is provided.
  • at least one light emitting diode is arranged as a light source. It may also be advantageous to arrange the pedestals at one or both ends, in particular at right angles to the main emission direction of the glass bulb.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne une lampe linéaire comportant une ampoule tubulaire en verre. Au moins un culot permet la mise en contact électrique et la fixation de la lampe linéaire. Au moins une diode électroluminescente est placée dans l'ampoule comme moyen d'éclairage.
EP10784300.5A 2009-11-26 2010-11-25 Lampe linéaire Active EP2491295B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009055855A DE102009055855A1 (de) 2009-11-26 2009-11-26 Linienlampe
PCT/EP2010/068232 WO2011064305A1 (fr) 2009-11-26 2010-11-25 Lampe linéaire

Publications (2)

Publication Number Publication Date
EP2491295A1 true EP2491295A1 (fr) 2012-08-29
EP2491295B1 EP2491295B1 (fr) 2019-08-14

Family

ID=43661993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10784300.5A Active EP2491295B1 (fr) 2009-11-26 2010-11-25 Lampe linéaire

Country Status (7)

Country Link
US (1) US8944630B2 (fr)
EP (1) EP2491295B1 (fr)
JP (1) JP3181127U (fr)
CN (1) CN102762911B (fr)
CA (1) CA2781448A1 (fr)
DE (1) DE102009055855A1 (fr)
WO (1) WO2011064305A1 (fr)

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Also Published As

Publication number Publication date
CN102762911A (zh) 2012-10-31
US20120236552A1 (en) 2012-09-20
US8944630B2 (en) 2015-02-03
CN102762911B (zh) 2015-03-25
EP2491295B1 (fr) 2019-08-14
JP3181127U (ja) 2013-01-31
WO2011064305A1 (fr) 2011-06-03
DE102009055855A1 (de) 2011-06-01
CA2781448A1 (fr) 2011-06-03

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