WO2008104498A2 - Beleuchtungsvorrichtung mit zumindest einer lampe und zumindest einem reflektor - Google Patents
Beleuchtungsvorrichtung mit zumindest einer lampe und zumindest einem reflektor Download PDFInfo
- Publication number
- WO2008104498A2 WO2008104498A2 PCT/EP2008/052142 EP2008052142W WO2008104498A2 WO 2008104498 A2 WO2008104498 A2 WO 2008104498A2 EP 2008052142 W EP2008052142 W EP 2008052142W WO 2008104498 A2 WO2008104498 A2 WO 2008104498A2
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- WIPO (PCT)
- Prior art keywords
- lamp
- lighting device
- coating
- display unit
- light
- Prior art date
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F21/00—Mobile visual advertising
- G09F21/04—Mobile visual advertising by land vehicles
Definitions
- Lighting device with at least one lamp and at least one reflector
- the invention relates to a lighting device with at least one lamp and at least one reflector.
- a first aspect of the invention relates to a lighting device with at least one lamp, at least ei ⁇ nem reflector and a backlit by the lamp display unit.
- the reflector comprises a Reflexionsflä ⁇ surface which at least partially comprises a shape profile which a by a factor greater than 1 flared involute of a component element of the lamp is ⁇ represents.
- the lighting device comprises processing a facing on one of the display unit portion of the outer surface of a lamp envelope formed coating which is ⁇ absorbing for the light emitted by the lamp part or teilabschwambaend.
- An involute ⁇ form corresponds to a settlement of a partial element of the lamp.
- the coating is preferably designed so that the light color of the light emitted by the lamp is virtually unchanged.
- the transmission of the coating is therefore to be chosen so that the light emitted directly to the display light quantity of the lamp is completely homogeneous and in
- the lamp comprises a arranged on the inside of the bulb phosphor layer, and a reflection surface of the reflector has at least certain regions ⁇ as a profile line on which a by a factor greater than 1 flared involute of the phosphor ⁇ layer in a cross-sectional view of theavessvor- direction or the Reflectors represents.
- ⁇ not the outer surface of the lamp envelope but the inner phosphor layer is quasi ⁇ carried out as a reference element for the formation of Kreisevol ⁇ vente layer and thus the quasi unwinding this phosphor for forming the involute.
- the shape profile of the reflection surface is preferably a circle involute widened by a factor of less than or equal to 2.
- the expansion of the basic circle involute by a factor between 1 and 2 allows a particularly effective embodiment of the lighting device in terms of space-saving arrangement, minimizing the number of lamps and high luminance homogeneity.
- the lamp bulb of the lamp is preferably tubular and formed as an elongate rod.
- a fluorescent lamp can be provided, which thus has a tubular discharge vessel.
- the embodiment of a lamp or the lamp envelope made ⁇ light illumination apparatus with a high efficiency for a backlight lamp.
- the reflecting surface is at least partially symmet ⁇ driven to an axis through the starting point of Kreisevol- vente on the lamp, and formed through the center of the lamp.
- the reflection surface is formed over its entire Ab ⁇ measurement in a cross-sectional view of the reflector as a widened Kreisvolvente.
- the lamp or the lamps of the lighting device are at least partially covered by the display unit at a light exit side of the lighting device.
- the display unit itself may be formed as a diffuser, which may be formed, for example, from a plurality of ⁇ films. This diffuser preferably also includes a spectral and / or Polarized ⁇ Rende filter function. This display unit is designed Favor ⁇ ingly as a display.
- a light transmissive element is arranged separately ⁇ which is soldbil ⁇ det such as a diffuser.
- This light-transmitting member may be arranged directly on the display unit at ⁇ .
- the outer surface of the lamp envelope is divided by a plane parallel to the display unit axis of symmetry of the lamp vessel into an upper and a lower surfaces ⁇ half.
- the lower wing panel with which the display unit of the associated unit area ⁇ be distinguished, is at least partially provided with a coating of this loading. It is thus preferably provided that the coating is formed at most over this surface half of the outside of the lamp bulb facing the display unit. It is preferably provided that only a portion of the display unit facing surface half of the outer side of the lamp bulb, insbeson ⁇ particular less than 80% of this area half are provided with the coating loading.
- the coating is preferably formed symmetrically to egg ⁇ ner perpendicular to the display unit symmetry axis of the lamp envelope. On both sides of this Symmetrieach ⁇ se thus the coating on a same surface distance extends in a cross-sectional view of the lighting device.
- the coating is formed with un ⁇ ter Kunststofflichen layer thicknesses.
- the layer thickness in a sectional view decreases with decreasing distance to the axis of symmetry of the lamp bulb, which is oriented perpendicular to the display unit.
- the maximum layer thickness is then preferably arranged in the middle of the coating and thus at the point at which this Symmet ⁇ rieachse passes through the coating.
- the layer thickness of the coating is preferably out ⁇ forms that they, starting from the symmetry axis to ⁇ terdem distance from the axis of symmetry steadily thinner.
- the coating is designed so that it forms outgoing flat at the opposite ends in a sectional view and continuously in the shape curve of the outside of the lamp envelope is ⁇ forms.
- Layer thickness can be a particular in connection with the spread circular involute shape of the reflection surface high luminance homogeneity with a compact design and reduced number of lamps of the lighting device can be made possible.
- the coating comprises a rialzusammen GmbH Mate, which allows the light emitted from the lamp and passing through the coating light is unchanged in ⁇ ner light color substantially.
- ⁇ DERS particular preferably, it has proven when the coating comprises at ⁇ pieces barium and / or partially a metal, especially aluminum.
- the admixtures can be provided as particles or as a powder.
- the coating is preferably a lacquer which has these particle admixtures.
- the particle admixing is formed in the entire coating with the same concentration (number of particles per volume of the coating). This is advantageous when a coating with va ⁇ riabler layer thickness.
- the coating is formed with substantially the same layer thickness and / or has locally different concentrations of particle admixtures. It is essential for the coating to be formed in shape, dimensions and material composition that is given depends on the geometry of the lamp, in particular the Lampenkol ⁇ bens, a homogeneous light distribution of the e- mitt striv by the lamp on the display unit. There- To the coating is designed so that it has a corresponding degree of transmission at the respective areas.
- a sprayed-on layer is preferably designed so that the inhomogeneities resulting from the curvature of the lamp envelope are compensated.
- a coating with different layer thicknesses can be provided that are generated at the center of the piston, through which said axis of symmetry of Lam ⁇ penkolbens runs, a repeated spraying is performed on the linear spray station whereby ten other optical Eigenschaf- at this point of the lamp bulb than at the areas where the edges or ends of the coating run.
- the coating is formed as a film, and applied to the outside of the lamp ⁇ piston, in particular glued. Even with such an embodiment, the film can be realized with different layer thicknesses.
- the concentration of optionally present particle admixtures can also vary here. It can also be provided that the film differing ⁇ surface coatings, whereby locally sub- different optical properties, in particular the transmittance, are adjustable.
- the coating is designed as a heat-shrinkable tube with corresponding optical properties.
- Another aspect of the invention relates to a lighting device with at least one lamp, at least ei ⁇ nem reflector and illuminated by the lamp display unit. Between the lamp and the display unit, a light-transmissive element is arranged, on which wel ⁇ chem at least partially a coating is applied ⁇ .
- the coating has a composition of matter which leaves light passing through substantially unaltered in its light color. Also, this embodiment of the lighting device can be significantly reduced compared to known lighting devices, the number of required lamps and beyond the luminance homogeneity at least equal ⁇ designed.
- the translucent element is plate-like and on both sides flat or planar. This also contributes positively to the compact design of the lighting device.
- the coating is preferably formed at least on the side of the light-transmissive element facing the lamp. Damage by mechanical effects, such as scratching or the like, can be prevented.
- the lamp comprises a tubular lamp envelope having formed ⁇ th extending rod-shaped and thus straight.
- the coating is formed with different layer thickness.
- the layer thickness of the coating is preferably symmetrical to ei ⁇ ner axis, which runs through the lamp envelope and perpendicular to the light-transmissive element, formed sym ⁇ metric.
- the coating in the center and so ⁇ with at the point at which the axis of symmetry passes through the coating the greatest layer thickness.
- the coating is formed with a smaller layer thickness.
- this reduction of the layer thickness is continuous with decreasing distance to the axis of symmetry.
- the light-transmissive member of synthetic ⁇ material in particular of PMMA (polymethyl methacrylate) is preferably formed.
- the coating preferably comprises a proportion of barium and / or a proportionate amount of a metal, in particular aluminum.
- the admixtures may be particles or a powder. In particular, these admixtures are added to a lacquer which forms the basis of the coating.
- the coating is formed parallel to the extension of the lamp bulb on the light-transmitting element from ⁇ .
- a coating is thus arranged so that it is arranged in front of a lamp bulb.
- the admixture is provided in the coating with substantially the same concentration.
- a third aspect of the invention relates to a lighting device with at least one lamp, at least ei ⁇ nem reflector and a backlit by the lamp display unit.
- a light transmissive element is arranged which is formed plate-like and on which the lamp supplied ⁇ facing first side has an uneven structure. This additional element and its explicit design and design on the zugewand- th the lamp first page, a particularly high light density homogeneity can ⁇ with reduced number of lamps ⁇ tet shall be quietest.
- the translucent element is preferably a diffuser.
- the first side preferably has elevations which have a curved outer contour. In cross section, the first side of the translucent element is thus formed quasi wave-like.
- the elevations preferably extend in a straight line over the entire extent of the translucent element. This is particularly be provided if the lamp or the lamps are of rectilinear or rod-shaped and have a corresponding length as the light ⁇ permeable member.
- the elevations preferably extend parallel to one another and are formed directly adjacent to one another.
- the first sides of the light-transmissive element is particularly advantageous.
- virtually every lamp is associated with such a survey.
- ⁇ seen that such an elevation is placed right in front of a lamp upon a consideration ofumpssvor- direction from the front and thus in consideration of the display unit.
- Such a survey is preferably arranged parallel to a rod-shaped lamp envelope of the lamp.
- an elevation so ⁇ out forms, and is arranged such that its maximum height in the Be out ⁇ ⁇ forms a rich perpendicularly incident on the elevation of the lichtssens ⁇ sigen element symmetry axis of the lamp.
- the maximum height of such a survey is then preferably formed at the position where the mi ⁇ nimale distance between the light-transmissive member and a on the side facing the light transmissive member side arcuately shaped lamp vessel is formed.
- the translucent element is preferably made of plastic, in particular of PMMA.
- the translucent element is quasi formed as a diffuser ⁇ and has elevations or thickening at the points which are mounted immediately adjacent to the lamps of the lighting device. Due to the then low transmission, which are accompanied by the thickening or the elevations in the translucent element, the homogeneous total brightness is enabled on the side facing the display unit.
- the translucent element is flat on the side facing away from the lamp.
- a fourth aspect of the invention relates to a lighting device with at least one lamp, at least ei ⁇ nem reflector and a backlit by lamp display unit.
- a light-transmissive element Arranged between the lamp and the display unit is a light-transmissive element, which is plate-like, wherein in the light-transmissive element first partial regions are formed which have a different transmission to the remaining remaining second partial regions of the element transmittances for the light emitted by the lamp.
- This aspect of the invention also allows a very high luminance homogeneity of the lighting device with simultaneously reduced number of lamps compared to known lighting devices.
- a first portion is formed parallel to a lamp envelope.
- the functionality associated with the first portion can thus be achieved over the entire length of the bulb of the lamp.
- the first partial regions are preferably formed parallel to one another in the element. This is insbeson ⁇ particular advantageous if the illumination device includes a plurality of lamps, which are likewise arranged parallel to one another. Each lamp is then a ers ⁇ ter portion associated with or is in Wegungsrich- processing on a display unit in front of a lamp is quasi ⁇ arranged.
- a first partial region can be produced by material processing of a material of which a second partial region of the light-transmitting element is formed.
- a first of a homogeneous material Asbil ⁇ detes light transmissive element is re-edited, and thereby the first partial regions can be generated depending on demand and precise in number, shape and dimensions.
- the material of the translucent element can be generated.
- YAK lasers or CÜ 2 lasers or diode lasers can be used.
- the material processing for generating the first portions can be particularly effective when the lichtssens ⁇ sige element in its base material composition of plastic, in particular PMMA, is formed.
- the high energy density of the laser beams of said laser types in such a plastic material supply change can be generated, by which then comprise the first portions of a different light transmission ⁇ degree, than the second portions.
- Insbesonde ⁇ re material processing is performed so that the first subregions sen a lower transmittance aufwei- than the second portions.
- the first partial regions can actions are generated on the surface of the transparent member by a IR (infrared) radiation with egg ⁇ ner suitable source, by the action of high frequency by means of a suitable source, or by chemical reactions.
- IR infrared
- the reflector is designed as a flat plate on both sides.
- a construction-space-minimized component which is structurally simple in design and can be produced with little manufacturing effort.
- the light transmissive element is beid ⁇ hand flat. Both the display unit to ⁇ facing side and the lamp-facing side are thus formed substantially completely flat. This also increases the space minimization and increases the simple structural design and production of the translucent element are made possible.
- a first portion of the light-transmissive element is preferably formed as a flat strip. It can be provided that a first portion is formed homogeneously over its entire dimensions. Thereby also be ensured that a first Operabe having ⁇ rich quasi at all points a constant transmittance. Likewise, however, it can also be provided that a first subregion is formed inhomogeneous by the material processing with regard to the transmittances. In particular it can be provided that a partial area at the center is formed by the Materialbearbei ⁇ tung that it has a lower transport emissivity, than at the edge regions and the lateral ends.
- a first partial region has, in a cross-sectional view of the lighting apparatus the smallest transmittance there on ⁇ where a vertically oriented to the light transmissive element and thus also the first partial area Symmet ⁇ rieachse of the lamp envelope of the lamp extends.
- the first subregion can be formed so that it has an increasing transmittance in such a cross-sectional view with increasing distance to such an axis of symmetry of the lamp piston.
- the configuration of the first Operabe ⁇ kingdom may be such that the transmittance with increasing ⁇ constantly increasing the distance to this axis of symmetry of the lamp bulb.
- the compensation of production-related homogeneity deviations can be made possible.
- a reflector embodiment according to the loading leuchtungsvoriques of the first aspect comprise, this therefore does not comply with the ex ⁇ act exactly flared Kreisevolventenform, since the luminance homogeneity finally by an on ⁇ adjustment of the last optical element, the can be light-transmitting element or the diffuser sigen determined or inserted ⁇ represents.
- FIG. 1 is a schematic sectional view of a lighting device according to a first embodiment
- Fig. 2 is a partial section of FIG. 1;
- FIG. 3 is a schematic sectional view according to another embodiment of a lighting device
- FIG. 4 is a perspective view of a Sectionele ⁇ ment of the lighting device of FIG. 3.
- Fig. 5 is a schematic sectional view of another embodiment of the element according to Fig. 4;
- Fig. 6 is a schematic front view of the illumination ⁇ device of FIG. 3;
- FIG. 7 is a schematic sectional view of a further embodiment of a lighting device
- FIG. 8 is a perspective view of an embodiment of a sub-element of the BL LEVEL ⁇ processing apparatus Fig. 7;
- FIG. 9 is a front view of the lighting device according to FIG. 7;
- FIG. 10 is a perspective sectional view of a fourth embodiment of a lighting device; 11 is a perspective view of a sectionele ⁇ ment of the lighting device of FIG. 10.
- FIG. 12 is a front view of the lighting device GE measured FIG. 10th
- Fig. 1 is a schematic sectional view of an embodiment of a lighting device 1 according to the first aspect of the invention shown.
- the Be ⁇ leuchtungsvoriques 1 comprises a plurality of reflectors 2 and a corresponding plurality of lamps 3.
- a reflector 2 and a lamp 3 is shown because this is sufficient for explaining the invention.
- the lamp 3 is formed in the embodiment as fluorescent lamp ⁇ and comprises a rod-shaped, längli ⁇ ches and tubular discharge vessel, which is the Lam ⁇ penkolben 3a.
- the lamp bulb 3a and thus also the lamp 3 extend perpendicular to the figure plane.
- the reflector 2 extends perpendicular to the plane of the figure and has substantially a length which corresponds to the length of the lamp 3, in particular of the lamp bulb 3a.
- On an inner side 32 of the lamp bulb 3a is a not further drawn phosphor layer 33 angeord ⁇ net.
- a first axis of symmetry A of the lamp bulb 3a extends in the vertical direction (y-direction) and thus vertically to a display unit 5, which is arranged in front of the lamp 3 in the Be ⁇ lighting device 1.
- a further second axis of symmetry B extends perpendicular to the first axis of symmetry A through the center M of the lamp 3 and thus extends parallel to the orientation (x direction) of the display unit 5 in the sectional view shown.
- An outer side 31 of the lamp bulb 3 a is divided by this second axis of symmetry B into an upper surface half 31 a, which faces the reflector 2, and a lower surface half 31 b, which faces the display unit 5.
- the reflector 2 is not shown in detail in its basic shape in the schematic representation of FIG. 1 and only the reflection surface 21 of the reflector 2 is shown. This has in the embodiment shown in cross-section on a shape curve, which corresponds to a by a factor greater than 1 and less than or equal to 2 expanded original Kreisvolvente 2 '.
- the original circle involute 2 '(gestri ⁇ smiled representation) is shown only to illustrate the shape of the reflection surface 21 in FIG. 1 and not present in the real design of the lighting device 1.
- the reflector 2 is formed symmetrically to the axis of symmetry A and the reflection surface 21 is formed symmetrically to this axis of symmetry A.
- the reflection surfaces 21 start at the point C.
- the An ⁇ display unit 5 may be a TFT display or the like.
- the display unit 5 may be formed as a multilayer film system.
- a coating 4 is ⁇ forms.
- the coating 4 is thus applied to the display ⁇ unit 5 facing surface half 31 b of the outside 31.
- this Beschich ⁇ tion is arranged directly on this surface half 31b.
- the coating 4 extends perpendicular to the plane of the figure and has substantially the same length as the lamp envelope 3a. At this the display unit 5 facing surface half 31b, the lamp bulb 3a thus over the entire length of this coating 4. As shown in FIG. 1, the coating 4 has different layer thicknesses in the sectional representation. The coating 4 has in the middle 41 and thus in the region in which the vertical axis of symmetry A passes through the coating 4, the largest Schichtdi ⁇ bridge on. Away from this center 41, the layer thickness is thinner. In particular, the film thickness is formed continuously decreasing with increasing distance from this axis of symmetry A in the shown exporting ⁇ approximately example. The opposite edges or ends 42 and 43 of this coating 4 are formed in such a way that almost a continuous transition of the shape curve of the coating 4 into the curvature of the lamp bulb 3a is formed.
- the coating 4 is partially absorbent for the light emitted by the lamp 3.
- the coating 4 is formed such that the light color of the light emitted by the lamp 3 is not changed by the coating 4.
- the luminance profile can thus be lowered in the direction of the display unit 5 defi ⁇ ned.
- the optical properties of the coating 4 must be chosen with regard to their degree of transmission so that the emitted directly to the display unit 5 ⁇ light amount of the lamp 3 is completely homogeneous.
- the coating 4 is formed as a lacquer, which barium is proportionally added.
- the barium particles are introduced in the illustrated embodiment of the coating 4 with their different layer thicknesses with over the entire coating 4 substantially the same concentration.
- the coating 4 can be sprayed on.
- an embodiment may be provided as a film or shrink tubing.
- Fig. 2 is a partial detail of the illustration in Fig. 1 is shown, it can be seen in which the lamp 3 and the coating 4 are spaced ⁇ is arranged to display unit 5.
- the shape of the coating 4 which is crescent-shaped in cross-section extends only over a partial area of the lower surface half 31b. In particular, the coating 4 is applied only over a partial area which is less than 80% of this lower area half 31b.
- FIG. 3 shows a schematic sectional illustration of a partial detail of a lighting device 1 according to a second aspect of the invention.
- the Be ⁇ lighting device 1 comprises a reflector 2, which is formed in the embodiment shown on the lamps 3 side facing substantially completely flat.
- the lighting device 1 comprises a plurality of tubular and perpendicular to the plane of the figure extending bar-shaped fluorescent lamps 3, which are spaced from each other and arranged parallel to each other.
- a phosphor layer 33 (not shown) is applied to an inner side 32 of the lamp bulb 3a.
- a light-transmissive element 6 is arranged, which is arranged in the exemplary embodiment directly ⁇ on the display unit 5 ⁇ .
- the diffuser and the light-permeable EIe- element 6 is made of plastic, in particular PMMA,usedbil ⁇ det.
- a multilayer film system can be pre ⁇ seen.
- a coating 7 is applied in regions.
- the coating 7 is about egg ne width w in the x direction applied which in Wesentli ⁇ surfaces corresponding to the outer diameter of the lamp vessel 3a.
- the width w can also be made smaller.
- the coating 7 is arranged so that it is arranged in front of the lamp 3 when looking at the lighting device 1 from the front (in the y-direction) and thus when viewing the display unit 5.
- the coating 7 extends perpendicular to the plane of the figure substantially over the entire length of the lamp envelope 3a.
- the coating 7 has a material composition which leaves the light produced by the lamp 3 and passing through the coating 7 substantially unchanged in its light color.
- no coating is up on the outer side 31 and in particular on the lower surface half 31b accommodated, as in the embodiment of the illumination ⁇ device 1 according to FIGS. 1 and 2 of the case.
- the coating 7 according to Fig. 3 is here thus spaced apart from the outer side 31 is arranged and is in execution, for example ⁇ turn, a varnish, which is proportionately barium beigege- ben.
- a varnish which is proportionately barium beigege- ben.
- FIG. 4 schematically shows a perspective view of a first embodiment of the translucent element 6.
- the display unit 5 supplied ⁇ facing side 62 is formed substantially completely flat off.
- the strip-shaped coating 7, which he stretches ⁇ over the ge ⁇ entire length 1 of the light-transmitting element 6 is shown.
- further coatings 7 'and 1 are shown by way of example in addition to the coating 7. These are formed parallel to and spaced from the coating 7 and associated with further lamps 3 'and 3 "(FIG. 6) which are arranged parallel to and spaced from the lamp 3 shown in FIG.
- FIG. 4 an embodiment is shown, wherein the coating 7 over the entire width w (x-direction) and along the entire length 1 (z-direction) has a constant in Wesentli ⁇ chen layer thickness in the y-direction. Be ⁇ vorzugt it is provided, that then the material composition is such that locally different degrees of transmission are given in order to obtain a homogeneous distribution of light on the display unit 5 due to the Geomet ⁇ rie of the lamp bulb 3a.
- FIG. 5 is a further schematic sectional view of a further exemplary embodiment of a light-emitting diode. permeable element 6 with a coating 7 shown in a partial section.
- the layer thickness of the coating 7 is different over its width w. Starting from a maximum layer thickness, it decreases continuously in the middle of the width w towards the edges 71 and 72.
- the outer contour 73 of this embodiment of the coating 7 is arcuately curved.
- the concentration of the barium admixture is essentially constant at all regions of the coating 7.
- Fig. 6 is a schematic front view of a loading ⁇ leuchtungsvoroplasty 1 according to the embodiments in FIG.'S 3 to 5 shown.
- the three lamps 3, 3 'and 3 "oriented parallel to one another can be seen, which only project beyond the horizontal dimensions of the light-permeable element 6 with their sockets.
- color differences ⁇ gradation for example, of the coating 7 starting from the center toward the edges 71 and 72, the decreasing towards the edges 71 and 72 toward the layer thickness according to the embodiment in Fig. 5 is symbolized.
- Fig. 7 is a schematic sectional view is shown by a partial detail of a lighting device 1 GE measure a third aspect of the invention.
- the lighting device 1 comprises a plurality of lamps 3, which according to the embodiments in Fig. 1 and Fig. 3 extend perpendicular to the plane of the figure.
- a re ⁇ Flektor 2 is trained det according to the embodiment in Fig. 3.
- An outer side 31 of the lamp bulb 3a is divided by the horizontal axis of symmetry B of the lamp bulb 3a into an upper surface half 31a and a lower surface half 31b.
- a reflection half 21 of the reflector ⁇ sector 2 is substantially planar and extends perpendicular to the plane of the figure.
- the lighting device 1 comprises a display unit
- the light-transmitting element 6 is on one of the display unit 5 facing side 62 (Fig. 8) formed in the completely flat We ⁇ sentlichen.
- the translucent plate-like element 6 is structured on a side 61 facing the lamp.
- the structuring is characterized by a plurality of elevations 63, 63 ', 63 "(FIG. 8).
- the cross-sectional view is the translucent element
- the elevation 63 extends in the x-direction over a width w, which corresponds essentially to the outer diameter of the lamp bulb 3a.
- the arcuate curvature of the survey 63 has there the greatest height where the vertical axis of symmetry A and thus the axis of symmetry A, which is vertically enti ⁇ by the translucent element 6 and the display unit 5, runs.
- the height of a survey 63 decreases steadily with increasing distance to this axis of symmetry A.
- the survey 63 is formed symmetrically to this axis of symmetry A.
- the elevation 63 extends perpendicular to the plane of the figure substantially over the same length as the lamp bulb 3 a .
- the survey 63 thus extends parallel to the lamp envelope 3a.
- FIG. 8 shows a perspective view of the light-transmissive element 6. It can be seen that the plurality of protrusions 63, 63 'and 63 "extend in the longitudinal direction (z-direction) over the entire length 1 of the light-permeable element 6. The curved in the direction of the lamp 3 arcuate contour 63a of the survey 63 is shown. The elevations 63, 63 'and 63''are formed directly adjacent to each other in the embodiment. By this survey 63 in the embodiment of FIG. 7, the transmittance of the emitted light from the lamp 3 can be selectively changed.
- FIG. 9 shows a schematic front view of the lighting device 1 according to FIGS. 7 and 8. The parallel arrangement of the rod-shaped lamps 3, 3 'and 3 "is shown.
- the translucent element 6 is as well as the off ⁇ management in Fig. 4 integrally formed.
- FIG. 10 shows a schematic sectional view of a lighting device 1 according to a fourth aspect of the invention.
- the lighting device 1 in turn comprises a plurality of lamps 3 extending perpendicularly to the plane of the figure, which are arranged adjacent to one another and at a distance from one another.
- An outer side 31 of the lamp bulb 3a is formed by a parallel to a display unit 5 extending symmetry axis B of Lam ⁇ penkolbens in an upper surface half 31a, which faces a reflection surface 21 of the reflector 2, and a lower surface half 31b, which faces the display unit 5, divided up.
- the light transmitting member 6 is formed of PMMA in exporting ⁇ approximately example and includes first Subareas 8, which are integrated in the translucent element 6. This means that the first Operabe ⁇ rich 8 is surrounded in the cross-sectional view shown in both the y-direction and in the x-direction of material of the light-transmissive element 6 and thus quasi a ⁇ bedded.
- the first portion 8 surrounding Ma ⁇ TERIAL of the light transmitting member 6 forms the two ⁇ th portion 9.
- the first portion 8 has a lower transmittance for the e- mitt Arthur of the lamp 3 light in comparison to the transmittance of the second portion.
- the first subarea 8 is designed as a partial region 8 which appears to be essentially contiguous in a first approximation and thus essentially defined in a planar manner.
- This first partial region 8 is formed perpendicular to the plane of the figure over a length which substantially corresponds to the length of the lamp bulb 3a.
- the first sectionbe ⁇ rich 8 thus extends spaced and parallel to Lam ⁇ penkolben 3a.
- the first sub-area 8 is arranged so that it is formed when viewing the lighting device 1 from the front and thus in a view of the display unit 5, almost in front of the lamp 3.
- the first subarea 8 extends in the x direction and thus in the direction of extent of the translucent element 6 essentially over a width w (FIG. 11) which is smaller than or equal to the outer diameter of the lamp bulb 3a.
- the first subarea 8 is preferably formed by a material processing of the material of the second part Reichs 9 producible. This means that the light- transmissive element 6 is first manufactured and provided from a homogeneous material. Subsequent to this, the first subarea 8 is then formed by carrying out a corresponding material processing. In ⁇ example, it can be provided that the first Sectionbe ⁇ rich 8 is generated by the action of laser beams on the material of the light-transmissive element 6. However, infrared radiation or radio frequency radiation may be used benso E-, to obtain such a material ⁇ change for generating the first portion. 8
- a chemical processing can be used to generate the first portion 8.
- the material processing takes place in such a way that the first subregion 8 always has a smaller transmittance than the second subregion 9.
- FIG. 11 shows, in a perspective view, the translucent element 6 with the first subregion 8, which is quasi embedded in the second subregion 9.
- the trained as a flat strip first portion 8 extends over the entire length 1 with a constant width w.
- the thickness (y-direction) of the first portion 8 is both w across the width designed as constant over the length 1 in Wesentli ⁇ chen.
- the Transmissi- onsgrad is generated in local areas of the first portion 8 so that on the display unit 5 associated wall ⁇ th page 6 a homogeneous light distribution of the light generated by the lamp 3 is ensured.
- the edges 81 and 82 shown in FIG. 11 delimit the first subarea 8. The latter is then spaced apart from further first subareas formed parallel thereto and not further illustrated in FIG. 11.
- FIG. 12 shows a schematic representation of a front view of the illumination device 1 according to FIG. 10 and FIG. 11.
- the color gradation of the first subarea 8, which is different in the x direction, is intended to symbolize a layer thickness varying in this direction or a material processing in which different transmission grades are generated in this x direction of the first subarea 8.
- the parallel arrangement of three exemplified lamps 3, 3 'and 3'' is shown. Only the base of these lamps 3, 3 'and 3''protrude on both sides over the length 1 of the translucent Ele ⁇ element 6 addition.
- At least one of these films can have a printing, by means of which the structuring with the strip-like coatings 7, 7 'and 1' 'can be achieved.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112008000103T DE112008000103A5 (de) | 2007-02-28 | 2008-02-21 | Beleuchtungsvorrichtung mit zumindest einer Lampe und zumindest einem Reflektor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007009735.4 | 2007-02-28 | ||
DE102007009735A DE102007009735A1 (de) | 2007-02-28 | 2007-02-28 | Beleuchtungsvorrichtung mit zumindest einer Lampe und zumindest einem Reflektor |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008104498A2 true WO2008104498A2 (de) | 2008-09-04 |
WO2008104498A3 WO2008104498A3 (de) | 2009-01-15 |
Family
ID=39512127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/052142 WO2008104498A2 (de) | 2007-02-28 | 2008-02-21 | Beleuchtungsvorrichtung mit zumindest einer lampe und zumindest einem reflektor |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE102007009735A1 (de) |
WO (1) | WO2008104498A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012069312A1 (de) | 2010-11-25 | 2012-05-31 | Osram Ag | Lineare beleuchtungsvorrichtung mit leds |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE806001C (de) * | 1948-11-19 | 1951-06-11 | Hoerner Fa Eugen | Reflecktor fuer leuchtende Flaechen |
US4418378A (en) * | 1981-03-05 | 1983-11-29 | Plan Hold Corporation | Light box |
JPS6240151A (ja) * | 1985-08-14 | 1987-02-21 | Hitachi Ltd | 蛍光ランプ |
US5253151A (en) * | 1991-09-30 | 1993-10-12 | Rockwell International Corporation | Luminaire for use in backlighting a liquid crystal display matrix |
JPH0644812A (ja) * | 1992-02-14 | 1994-02-18 | Nasuka:Kk | 反射板と照明器具と照明装置 |
-
2007
- 2007-02-28 DE DE102007009735A patent/DE102007009735A1/de not_active Withdrawn
-
2008
- 2008-02-21 WO PCT/EP2008/052142 patent/WO2008104498A2/de active Application Filing
- 2008-02-21 DE DE112008000103T patent/DE112008000103A5/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
None |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012069312A1 (de) | 2010-11-25 | 2012-05-31 | Osram Ag | Lineare beleuchtungsvorrichtung mit leds |
DE102010061988A1 (de) | 2010-11-25 | 2012-05-31 | Osram Ag | Lineare Beleuchtungsvorrichtung mit LEDs |
Also Published As
Publication number | Publication date |
---|---|
DE112008000103A5 (de) | 2009-11-26 |
WO2008104498A3 (de) | 2009-01-15 |
DE102007009735A1 (de) | 2008-09-04 |
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