WO2010067817A1 - Appareil d’éclairage - Google Patents

Appareil d’éclairage Download PDF

Info

Publication number
WO2010067817A1
WO2010067817A1 PCT/JP2009/070600 JP2009070600W WO2010067817A1 WO 2010067817 A1 WO2010067817 A1 WO 2010067817A1 JP 2009070600 W JP2009070600 W JP 2009070600W WO 2010067817 A1 WO2010067817 A1 WO 2010067817A1
Authority
WO
WIPO (PCT)
Prior art keywords
conversion member
color conversion
central axis
light
substrate
Prior art date
Application number
PCT/JP2009/070600
Other languages
English (en)
Japanese (ja)
Inventor
良二 横谷
Original Assignee
パナソニック電工株式会社
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 パナソニック電工株式会社 filed Critical パナソニック電工株式会社
Publication of WO2010067817A1 publication Critical patent/WO2010067817A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • 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
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature
    • 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
    • F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
    • 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 generally relates to a lighting device, and more specifically, blue light emitted from a light emitting diode (LED) as a light emitting element and yellow light emitted from phosphor particles by being excited by the blue light are mixed.
  • the present invention relates to an illumination device that emits white light.
  • various lighting devices including a light emitting element and a reflecting mirror for controlling the light distribution of the light emitted from the light emitting element have been provided.
  • An example of this is published in Japan on November 30, 2001. It is described in Japanese Patent Publication No. 2001-332104.
  • the inner surface of the reflecting mirror includes a parabola formed by rotating one parabola having a focal point at the position of the light emitting element about the axis of symmetry of the parabola, and is emitted from the light emitting element. Can be efficiently reflected in a desired direction.
  • the illuminating device A includes an LED chip 1 that is a light emitting element that emits blue light, a substrate 2 on which the LED chip 1 is mounted, a color conversion member 4, and a reflecting mirror 8'.
  • the color conversion member 4 has translucency, and further contains phosphor particles that are excited by blue light emitted from the LED chip 1 and emit yellow light.
  • the color conversion member 4 is formed in a dome shape having an opening and a vertex from a part of a hollow spheroid as shown in FIG.
  • the color conversion member 4 is disposed on a central axis M1 in which the opening is closed by the substrate 2 and the LED chip 1 passes through the point P4 located at the apex and the point P6 at the center of the opening. Is mounted on the substrate 2 as described above.
  • the reflecting mirror 8 ′ has an inner surface 8 b ′ formed so as to expand from the proximal end to the distal end, and the inner surface 8 b ′ is attached to the substrate 2 so as to surround the color conversion member 4. Installed.
  • the reflecting mirror 8 ′ reflects the light emitted from the LED chip 1 through the color conversion member 4.
  • the inner surface 8b 'of the reflecting mirror 8' includes a paraboloid formed by rotating about a parabola having a symmetry axis that coincides with the central axis M1.
  • the parabola has a focal point set at a point P1 that intersects the central axis M1 on the LED chip 1. Therefore, for example, as shown in FIG. 7, the light emitted from the LED chip 1 to an arbitrary point P3 on the surface of the color conversion member 4 is a point P2 where a straight line passing through the point P1 and the point P3 intersects with the inner surface 8b ′. (See arrow D11) and reflected in a direction along the central axis M1 (see arrow D12).
  • the color conversion member 4 is formed in a dome shape from a part of an ellipsoid that is almost a sphere, and the point P1 is located at the center of the ellipsoid. Accordingly, the straight line passing through the points P1 and P2 substantially coincides with the normal extending from the point P3 with respect to the tangent plane at the point P3 on the surface of the color conversion member 4. Similarly, for a straight line passing through the point P1 and an arbitrary point on the inner surface 8b ', the straight line is an intersection (not shown) where the straight line on the surface of the color conversion member 4 and the color conversion member 4 intersect. It substantially coincides with the normal extending from the intersection with respect to the tangent plane at.
  • a straight line passing through the points P4 and P2 and a straight line passing through the points P5 and P2 extend from the points P4 and P5 with respect to the tangent plane at the points P4 and P5 on the surface of the color conversion member 4. Intersects without matching each normal.
  • the illumination device A ′ configured as described above irradiates white light by mixing the blue light emitted from the LED chip 1 and the yellow light excited by the blue light and emitted from the color conversion member 4.
  • the light emitted from the point P3 has different light distribution characteristics between blue light and yellow light as shown in FIG.
  • the light distribution characteristic is such that yellow light diffuses in a substantially circular shape (curve A in FIG. 8), whereas blue light has an elliptical shape with the major axis direction in the direction of arrow D11.
  • the light emitted in the direction of the arrow D41 that does not coincide with the normal direction has a high proportion of yellow light.
  • the ratio of the blue light to the light emitted in the direction coincident with the normal direction becomes higher because the blue light transmitted through the color conversion member 4 does not collide with the phosphor particles in the color conversion member 4. This is because many components are contained.
  • the central part of the irradiation pattern has a blueish color
  • the peripheral part of the irradiation pattern has a yellowish color.
  • an object of the present invention is to provide an illuminating device that can reduce color unevenness generated in a light irradiation pattern.
  • the illuminating device of the present invention includes a light emitting element, a substrate on which the light emitting element is mounted, a dome-shaped color conversion member having an opening, an apex, and translucency, and a reflecting mirror.
  • the color conversion member is mounted on the substrate such that the opening is closed by the substrate and the light emitting element is disposed on a central axis passing through the apex and the central portion of the opening.
  • the color conversion member includes phosphor particles that are excited by light emitted from the light emitting element and emit light having a color different from that of the emitted light.
  • the reflecting mirror has an inner surface formed so as to expand from the proximal end to the distal end.
  • the reflecting mirror is mounted on the substrate such that the inner surface surrounds the color conversion member, and controls the light distribution of light emitted from the light emitting element through the color conversion member.
  • the inner surface includes a rotating curved surface formed by rotating a part of a curve located outside the apex of one parabola around the central axis.
  • the parabola has a focal point set at a position excluding the central axis between the apex of the color conversion member and the opening end along the central axis.
  • the parabola has a focal point set at a position excluding the central axis between the apex of the color conversion member along the central axis and the opening end, so It is possible to provide an illuminating device that can reduce color unevenness generated in an irradiation pattern.
  • the focal point is set on a surface of the color conversion member or on a virtual curved surface along the surface inside the color conversion member.
  • a normal extending through the focal point with respect to the tangent plane at the position is set so as to intersect the rotating curved surface.
  • the normal extending through the focal point is set so as to intersect the rotating curved surface, color unevenness occurring in the light irradiation pattern can be further reduced.
  • the normal line is set to intersect the tip of the reflecting mirror. In this embodiment, since the normal is set so as to intersect the tip, it is possible to uniquely determine the most efficient external dimensions of the reflector that can improve color intensity and reduce color unevenness. Can be determined.
  • the inner surface includes a plurality of rotating curved surfaces arranged so as to be adjacent to each other along the central axis.
  • the plurality of rotating curved surfaces are respectively formed from a plurality of parabolas having focal points set at different positions between the apex of the color conversion member and the opening end.
  • the plurality of rotating curved surfaces are respectively formed from a plurality of parabolas having focal points set at different positions between the apex of the color conversion member and the opening end, so that the light irradiation pattern It is possible to provide an illuminating device that can more efficiently reduce uneven color.
  • the plurality of rotating curved surfaces include a first rotating curved surface and a second rotating curved surface disposed adjacent to the first rotating curved surface on the tip side of the reflecting mirror.
  • the first and second rotating curved surfaces are respectively formed from first and second parabolas having first and second focal points.
  • the first focus is set closer to the vertex of the color conversion member than the second focus.
  • an illumination device capable of performing better light distribution is provided. be able to.
  • the plurality of focal points are respectively set at positions on a surface of the color conversion member or on a virtual curved surface along the surface inside the color conversion member.
  • a plurality of normals extending through the focal point with respect to the tangential plane at the position are set so as to intersect the plurality of rotating curved surfaces, respectively.
  • the plurality of normals extending through the focal point are set so as to intersect with the plurality of rotating curved surfaces, respectively, so that it is possible to further reduce the color unevenness generated in the light irradiation pattern. it can.
  • a normal line corresponding to a focal point of a parabola that forms a rotation curved surface included in the tip of the reflecting mirror among the plurality of rotation curved surfaces is set to intersect with the tip.
  • the normal line corresponding to the focal point of the parabola that forms the rotation curved surface included in the tip of the reflecting mirror among the plurality of rotation curved surfaces is set so as to intersect with the tip. It is possible to uniquely determine the outer dimension of the reflecting mirror that is most efficient so as to reduce the color unevenness while improving the luminous intensity as described above.
  • FIG. 1 shows Embodiment 1 of the present invention
  • FIG. 1A is a longitudinal sectional view
  • FIG. 1B is a schematic diagram showing a partial section of the reflecting mirror of FIG. 1A. It is a front view except the transparent cover of Embodiment 1 of the present invention.
  • It is a schematic diagram which shows the one part cross section of the reflective mirror of Embodiment 2 of this invention.
  • It is a schematic diagram which shows the one part cross section of the reflective mirror of the modification of Embodiment 2 of this invention.
  • It is a schematic diagram which shows the one part cross section of the reflective mirror of Embodiment 3 of this invention.
  • the illumination device A of the present embodiment includes an LED chip 1, which is a light emitting element, a substrate 2, an optical member 3, a color conversion member 4, and a reflecting mirror 8, as shown in FIGS.
  • the lighting device A includes a housing 6, an insulating sheet 7, a holding frame 9, and a transparent cover 10.
  • the transparent cover 10 is not shown in FIG.
  • a GaN blue LED chip is used for the LED chip 1 of the present embodiment. Moreover, although the illuminating device A is provided with the single LED chip 1, it is not limited to this, You may provide the several LED chip 1. FIG.
  • the substrate 2 is made of an insulating ceramic substrate such as an alumina ceramic substrate or an aluminum nitride substrate. However, a glass epoxy resin substrate may be used in addition to the ceramic substrate.
  • An energization wiring pattern (not shown) made of a metal material such as a copper material is formed on the front side of the substrate 2.
  • the LED chip 1 is bonded to a die pad portion (not shown) formed of a part of the wiring pattern of the substrate 2 using various bonding materials such as solder and silver paste.
  • the substrate 2 is fixed to the inner bottom portion 6d of the housing 6 with a plurality of fixing screws 61 together with the elastic insulating sheet 7 formed substantially in the same shape as the substrate 2.
  • an organic green sheet that is an epoxy resin sheet that is highly filled with fused silica to increase thermal conductivity is used.
  • This organic green sheet has a characteristic that the resin fluidity during heating is high and the adhesion to the uneven surface is high. Therefore, it is possible to prevent a gap from being generated between the insulating sheet 7 and the substrate 2 and the inner bottom portion 6d.
  • the optical member 3 is for sealing the LED chip 1 mounted on the substrate 2 as shown in FIGS. 1A and 2. And since the optical member 3 is formed in convex lens shape with translucent sealing materials, such as a silicone resin, for example, it concentrates the blue light radiated
  • the color conversion member 4 is formed in a dome shape having an opening and a vertex by dividing a hollow spheroid in half at the center in the major axis direction.
  • the ratio of the major axis dimension to the minor axis dimension of the spheroid is set to 6: 5.
  • the color conversion member 4 may be formed of a hollow sphere other than the spheroid.
  • the color conversion member 4 is translucent and contains phosphor particles that are excited by blue light emitted from the LED chip 1 and emit yellow light. More specifically, the color conversion member 4 is made of a mixed material made by uniformly dispersing the phosphor particles in a transparent silicone resin.
  • the phosphor particles may be, for example, those that emit red light in addition to those that emit yellow light.
  • silicone resin for example, epoxy resin, acrylic resin, polycarbonate, glass, or the like may be used.
  • the color conversion member 4 is disposed on a central axis M1 where the opening is closed by the substrate 2 and the LED chip 1 passes through the point P4 where the LED chip 1 is located at the apex and the point P6 at the center of the opening.
  • the substrate is mounted on the substrate 2 with the major axis direction directed toward the central axis M1.
  • substrate 2 are adhere
  • An air layer 5 is provided between the optical member 3 and the color conversion member 4 as shown in FIG. 1A. Therefore, blue light that collides with the phosphor particles in the color conversion member 4 and is scattered toward the optical member 3 side, or yellow light that is emitted from the color conversion member 4 toward the optical member 3 side passes through the optical member 3. Thus, absorption by the substrate 2 or the like can be suppressed.
  • the air layer 5 is provided, the LED chip 1 and the optical chip can be used even when a part of the component comes into contact with the color conversion member 4 when the housing 6, the reflecting mirror 8, and the transparent cover 10 are attached. The impact transmitted to the member 3 can be reduced.
  • the reflecting mirror 8 has an inner surface 8b formed so as to expand from the proximal end to the distal end as shown in FIGS. 1A and 2. Further, an insertion port 8 a is provided through the base end of the reflecting mirror 8.
  • the reflecting mirror 8 is mounted on the substrate 2 so that the inner surface 8b surrounds the color conversion member 4 by inserting the color conversion member 4 from the insertion port 8a with the base end side facing rearward.
  • a material of the reflecting mirror 8 a metal material having a high reflectance of light incident from the phosphor particles of the LED chip 1 and the color conversion member 4 such as aluminum is used.
  • desired reflectivity is secured by evaporating aluminum, silver, or the like on the inner surface 8b of the reflecting mirror 8.
  • a highly heat-resistant resin or the like may be adopted as the material of the reflecting mirror 8.
  • the housing 6 is formed in a bottomed cylindrical shape having an opening on the front end side by a metal material such as aluminum as shown in FIG. 1A, and the LED chip 1, the substrate 2, and the reflecting mirror 8 are accommodated therein.
  • a plurality of screw holes 6 c are formed in the vicinity of the front end of the side wall 6 b of the housing 6 over the entire circumference.
  • the transparent cover 10 is formed in a disc shape having an outer diameter that is slightly larger than the inner diameter of the housing 6 by a light-transmitting material such as acrylic resin, polycarbonate, glass, or the like.
  • the transparent cover 10 is placed on the outer flange portion 8c extending outward from the front end edge of the reflecting mirror 8.
  • the holding frame 9 includes an annular portion 9a formed in an annular shape, and a protruding portion 9b that protrudes rearward from the rear surface of the annular portion 9a over the entire circumference of the annular portion 9a.
  • the inner diameter of the annular portion 9 a is set smaller than the inner diameter of the housing 6, and the outer diameter is set larger than the outer diameter of the housing 6.
  • a plurality of screw insertion holes 9c are provided through the entire protrusion 9b.
  • the front end of the side wall 6b of the housing 6 is fitted inside the protruding portion 9b in a state where the outer flange portion 8c of the reflecting mirror 8 and the transparent cover 10 are placed.
  • the plurality of mounting screws 91 are inserted into the screw insertion holes 9c of the protruding portion 9b and screwed into the screw holes 6c of the side wall 6b, so that the holding frame 9 is attached to the housing 6.
  • the transparent cover 10 is mounted so as to be held between the holding frame 9 and the outer flange portion 8c so as to close the opening of the housing 6.
  • the blue light emitted from the LED chip 1 and transmitted through the optical member 3 and the color conversion member 4 and the yellow light emitted from the phosphor particles of the color conversion member 4 are mixed. It is irradiated with white light.
  • the inner surface 8b of the reflecting mirror 8 rotates a part of a curve located outside the point P7 located at the apex of the parabola Pa1 around the central axis M1 as shown in FIG. 1B.
  • the rotation curved surface 8d formed by (1) is included.
  • the parabola Pa1 has a focal point F1 set at a position excluding the central axis M1 between the apex of the color conversion member 4 and the opening end along the central axis M1.
  • 1B is a cross-sectional view schematically showing only the surface of the color conversion member 4 and the inner surface 8b of the reflecting mirror 8 on the right side of the central axis M1 of the illumination device A shown in FIG. 1A.
  • the vertical axis in FIG. 1B coincides with the central axis M1, and the horizontal axis coincides with the direction orthogonal to the central axis M1.
  • shaft of FIG. 1B represents the distance to each direction from the point P1 located in the center part of LED chip 1 which is an origin.
  • FIG. 1B shows the result of the simulation of the light path with respect to the inner surface 8b of the present embodiment formed in this way.
  • Straight lines D1 to D6 in the drawing represent various light paths emitted from a position corresponding to the focal point F1 on the surface of the color conversion member 4 and incident on the inner surface 8b.
  • the straight line D1 coincides with the normal direction extending through the focal point F1 with respect to the tangent plane at the focal point F1 on the surface of the color conversion member 4.
  • Arrows D7 to D12 represent light paths when the various incident lights are reflected by the inner surface 8b.
  • the inner surface 8b of the present embodiment radiates from a position corresponding to the circle X1.
  • the light radiated from the position other than the circle X1 to the inner surface 8b is reflected in the direction intersecting with the central axis M1 as usual.
  • the illuminating device A of the present embodiment conventionally has a ratio of yellow light distributed to the central portion of the irradiation pattern by the amount of light emitted from the position corresponding to the circle X1 on the surface of the color conversion member 4. It is possible to raise the ratio of the blue light distributed to the peripheral portion of the irradiation pattern from the conventional illumination device A ′. Thus, it is possible to reduce the difference between the ratio of blue light and yellow light in the central portion of the irradiation pattern and the ratio of blue light and yellow light in the peripheral portion, and to reduce the color unevenness that occurs in the irradiation pattern. it can.
  • the focal point F1 is set on the surface of the color conversion member 4 is taken as an example.
  • the present invention is not limited to this and may be set inside the color conversion member 4. Similar effects can be obtained.
  • FIG. 3A and B The illuminating device A of this embodiment is demonstrated referring FIG. 3A and B.
  • FIG. However, for the sake of clarity, the same reference numerals as those of the lighting device A of the first embodiment are assigned to similar elements.
  • the illuminating device A of this embodiment is characterized in that it includes a reflecting mirror 80 having an inner surface 80b as follows.
  • FIGS. 3A and 3B are sectional views schematically showing only the surface of the color conversion member 4 and the inner surface 80b of the reflecting mirror 80 on the right side of the central axis M1 of the illumination device A of the present embodiment, as in FIG. 1B. is there.
  • the inner surface 80b includes first and second rotating curved surfaces 82b and 83b arranged so as to be adjacent to each other along the central axis M1 as shown in FIG. 3B.
  • the second rotating curved surface 83b is adjacent to the front end of the first rotating curved surface 82b. More specifically, first, as shown in FIG. 3A, first and second focal points F1 and F3 having different first and second focal points F2 and F3 set between the vertex of the color conversion member 4 and the opening end. There are two parabolas Pa2 and Pa3. Needless to say, at this time, the first and second focal points F2 and F3 are set at positions other than on the central axis M1. Then, as shown in FIG.
  • the intersection of the first parabola Pa2 and the second parabola Pa3 is a point C1
  • the first parabola Pa2 is outside the vertex and inside the point C1 is a curve E1
  • the second The outside of the parabola Pa3 from the point C1 is defined as a curve E2.
  • FIG. 3B shows the result of the simulation of the light path with respect to the inner surface 80b of the present embodiment formed in this way.
  • Straight lines G1 to G3 in the drawing represent light paths emitted from a position corresponding to the first focal point F2 on the surface of the color conversion member 4 and incident on the inner surface 80b.
  • straight lines G4 and G5 in the drawing represent light paths emitted from a position corresponding to the second focal point F3 on the surface of the color conversion member 4 and incident on the inner surface 80b.
  • Arrows G6 to G10 represent light paths when the various incident lights are reflected by the inner surface 8b.
  • the light emitted from the first and second focal points F2 and F3 from FIG. 3B is incident on the first and second rotating curved surfaces 82b and 83b on the inner surface 80b and travels in the direction along the central axis M1. It can be seen that it is reflected (see arrows G6 to G10). That is, when the first and second focal points F2 and F3 are rotated about the central axis M1, the first circle and the second circle follow the paths that the first and second focal points F2 and F3 follow, respectively (see FIG.
  • the inner surface 80b of the present embodiment can reflect light emitted from positions corresponding to the first circle and the second circle in a direction along the central axis M1. .
  • the light radiated from the position other than the first circle and the second circle to the inner surface 80b is reflected in the direction intersecting with the central axis M1 as usual.
  • the illumination device A since the optical member 3 formed in a convex lens shape is disposed, the blue light emitted from the LED chip 1 is condensed forward. That is, the luminance of the illumination device A is lower as it is closer to the substrate 2 on the surface and inside of the color conversion member 4 and higher as it is closer to the top of the color conversion member 4.
  • the amount of light reflected in the direction along the central axis M1 is increased in the illuminating device A of the present embodiment compared to the illuminating device A of the first embodiment, and blue light and yellow light in the central portion of the irradiation pattern are increased.
  • the difference between the ratio and the ratio of the blue light and the yellow light in the peripheral portion can be further reduced, and the color unevenness generated in the irradiation pattern can be further reduced.
  • the second focus F3 is set at a position closer to the vertex of the color conversion member 4 than the first focus F2 as described above. Therefore, the distance from the first and second focal points F2 and F3 to the corresponding first and second rotating curved surfaces 82b and 83b can be kept small, and a better light distribution can be performed.
  • the curvature of the parabola Pa1 increases.
  • the position of the focal point F1 moves to the lower luminance side of the color conversion member 4, and the luminous intensity in the direction along the central axis M1 of the illumination device A decreases.
  • the curvature of the parabola Pa1 decreases, and as a result, the reflecting mirror 8
  • the overall external dimensions are increased.
  • the lighting device A of the present embodiment has first and second rotating curved surfaces 82b and 83b. Therefore, when the outer dimensions of the color conversion member 4 are to be increased, the curvature of the first parabola Pa2 may be increased to decrease the curvature of Pa2 of the second parabola. That is, even if the position of the first focal point F2 moves to the lower luminance side, the position of the second focal point F3 can be maintained near the high luminance vertex of the color conversion member 4, and the illumination device A Can be suppressed.
  • the outer diameter of the second rotating curved surface 83b is larger than before increasing the outer dimension of the color conversion member 4, the outer diameter of the first rotating curved surface 82b can be reduced, so that The enlargement of the illumination device A can be suppressed.
  • the first and second focal points F2 and F3 described above are set on the surface of the color conversion member 4, but the same effect can be obtained even if they are set inside the color conversion member 4.
  • the inner surface 80b includes two rotating curved surfaces is given as an example, other than this, for example, three rotating curved surfaces or four rotating curved surfaces may be included.
  • the inner surface 80b includes, for example, a rotating curved surface 83b and an inclined surface 84b extending straight from the rear end portion of the rotating curved surface 83b toward the substrate 2 as shown in FIG. But you can.
  • FIG. 5 is a cross-sectional view schematically showing only the surface of the color conversion member 4 and the inner surface 8b of the reflecting mirror 8 on the right side of the central axis M1 of the illumination device A, as in FIG. 1B.
  • the inner surface 8b of the present embodiment is substantially the same as the inner surface 8b of the first embodiment, and includes a rotating curved surface 8d formed based on the parabola Pa1.
  • the tangent plane at the focal point F1 on the surface of the color conversion member 4 is defined as a surface Y1.
  • a normal line extending through the focal point F1 with respect to the surface Y1 is defined as a line H1.
  • the luminance of the illumination device A including the convex lens-shaped optical member 3 is lower as it is closer to the substrate 2 on the surface and inside of the color conversion member 4 and is closer to the vertex of the color conversion member 4. high. Therefore, considering only increasing the luminous intensity of the illumination device A, it is desirable to place the focal point F1 at the apex of the color conversion member 4 as shown in FIG. However, in this case, only the light having a high yellow light ratio is reflected by the inner surface 8b and emitted in the direction along the central axis M1, so that the yellow light is easily collected at the central portion of the illumination pattern. As a result, uneven color occurs in the illumination pattern.
  • the focal point F1 when the focal point F1 is set at the apex of the color conversion member 4, the light distributed to the central portion of the illumination pattern may be reduced, resulting in a decrease in luminous intensity.
  • the normal line H1 extending from the focal point F1 is set to intersect at least the rotating curved surface 8d. .
  • the two normals extending from the first and second focal points F2, F3 intersect with the corresponding first and second rotating curved surfaces 82b, 83b, respectively. It is desirable that it is set to be.
  • the line H1 of the present embodiment is set not only to intersect the rotating curved surface 8d but also to intersect the tip 8e of the reflecting mirror 8 as shown in FIG. That is, the most effective external dimension of the reflecting mirror 8 that can reduce the color unevenness while uniquely improving the luminous intensity by setting the focal point F1 as close to the vertex of the color conversion member 4 as possible is uniquely determined. be able to.
  • a virtual curved surface including the position of the focus F1 and along the surface of the color conversion member 4 is set.
  • the line H1 is defined as a normal extending through the focal point F1 with respect to the tangent plane at the position on the virtual curved surface.
  • the normal corresponding to the second rotating curved surface 83b included in the tip 80e (see FIG. 3B) of the reflecting mirror 80 intersects the tip 80e.
  • the same effect can be produced by setting so as to.

Abstract

La présente invention concerne un appareil d’éclairage avec une puce de diode électroluminescente, un substrat sur lequel la puce de diode électroluminescente est montée, un élément de conversion de couleurs en forme de dôme présentant une ouverture, un sommet et une capacité de transmission  optique, et un miroir réfléchissant. L’élément de conversion de couleurs contient des particules fluorescentes qui émettent une lumière jaune lorsqu’elles sont excitées par une lumière bleue émise depuis la puce à diodes électroluminescentes. En outre, l’élément de conversion de couleurs est monté sur le substrat de sorte que l’ouverture soit bloquée par le substrat et que la puce à diodes électroluminescentes soit disposée sur l’axe central (M) de celui-ci passant à travers le sommet et le centre de l’ouverture. Le miroir réfléchissant présente une face interne qui est formée de manière à s’ouvrir vers l’extérieur depuis l’extrémité inférieure de celui-ci le long d’une extrémité avant. Cette face interne comporte une surface courbe de rotation qui est formée par la rotation d’une partie d’une courbe parabolique située à l’extérieur du sommet autour de l’axe central de celle-ci. La parabole présente un foyer qui est réglé dans une position, autre que sur l’axe central, dans la portée depuis le sommet de l’élément de conversion de couleurs jusqu’au bord de l’ouverture, selon l’axe central. Par conséquent, il est possible de réduire un manque d’uniformité de couleurs produit par le motif d’éclairage optique.
PCT/JP2009/070600 2008-12-09 2009-12-09 Appareil d’éclairage WO2010067817A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-313547 2008-12-09
JP2008313547A JP5167099B2 (ja) 2008-12-09 2008-12-09 照明装置

Publications (1)

Publication Number Publication Date
WO2010067817A1 true WO2010067817A1 (fr) 2010-06-17

Family

ID=42242804

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/070600 WO2010067817A1 (fr) 2008-12-09 2009-12-09 Appareil d’éclairage

Country Status (2)

Country Link
JP (1) JP5167099B2 (fr)
WO (1) WO2010067817A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010038396A1 (de) * 2010-07-26 2012-01-26 Osram Opto Semiconductors Gmbh Optoelektronisches Bauelement
JP2013008506A (ja) * 2011-06-23 2013-01-10 Panasonic Corp 照明器具
WO2014063011A1 (fr) * 2012-10-18 2014-04-24 GE Lighting Solutions, LLC Lampe à del à ampoule en verre au néodyme
WO2019170091A1 (fr) * 2018-03-06 2019-09-12 杨道达 Lampe d'éclairage à del à focalisation de lumière

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5285038B2 (ja) * 2010-08-31 2013-09-11 シャープ株式会社 投光構造体および照明装置
JP2014067502A (ja) * 2012-09-24 2014-04-17 Toshiba Lighting & Technology Corp 照明器具
JP2014132537A (ja) * 2013-01-07 2014-07-17 Maruwa Co Ltd Ｌｅｄモジュール
US10253949B2 (en) 2013-07-30 2019-04-09 Sharp Kabushiki Kaisha Lighting device, lighting reflector and production method therefor
JP6839800B2 (ja) * 2016-10-27 2021-03-10 パナソニックＩｐマネジメント株式会社 照明装置、照明装置の製造方法及び配光制御部材

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008016303A (ja) * 2006-07-05 2008-01-24 Toshiba Lighting & Technology Corp 発光装置
WO2008153104A1 (fr) * 2007-06-12 2008-12-18 Miraikankyokaihatsukenkyujo Kabushikikaisha Dispositif d'éclairage de bureau

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008016303A (ja) * 2006-07-05 2008-01-24 Toshiba Lighting & Technology Corp 発光装置
WO2008153104A1 (fr) * 2007-06-12 2008-12-18 Miraikankyokaihatsukenkyujo Kabushikikaisha Dispositif d'éclairage de bureau

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010038396A1 (de) * 2010-07-26 2012-01-26 Osram Opto Semiconductors Gmbh Optoelektronisches Bauelement
US8952390B2 (en) 2010-07-26 2015-02-10 Osram Opto Semiconductors Gmbh Optoelectronic component
US9520442B2 (en) 2010-07-26 2016-12-13 Osram Opto Semiconductors Gmbh Optoelectronic component
US10050022B2 (en) 2010-07-26 2018-08-14 Osram Opto Semiconductors Gmbh Optoelectronic component
DE102010038396B4 (de) 2010-07-26 2021-08-05 OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung Optoelektronisches Bauelement und Leuchtvorrichung damit
JP2013008506A (ja) * 2011-06-23 2013-01-10 Panasonic Corp 照明器具
WO2014063011A1 (fr) * 2012-10-18 2014-04-24 GE Lighting Solutions, LLC Lampe à del à ampoule en verre au néodyme
CN104854393A (zh) * 2012-10-18 2015-08-19 通用电气照明解决方案有限责任公司 具有nd-玻璃灯泡的led灯
JP2015537341A (ja) * 2012-10-18 2015-12-24 ジーイー・ライティング・ソルーションズ，エルエルシー Ｎｄガラス電球を有するｌｅｄランプ
US9612002B2 (en) 2012-10-18 2017-04-04 GE Lighting Solutions, LLC LED lamp with Nd-glass bulb
WO2019170091A1 (fr) * 2018-03-06 2019-09-12 杨道达 Lampe d'éclairage à del à focalisation de lumière

Also Published As

Publication number Publication date
JP5167099B2 (ja) 2013-03-21
JP2010140674A (ja) 2010-06-24

Similar Documents

Publication Publication Date Title
WO2010067817A1 (fr) Appareil d’éclairage
JP5266605B2 (ja) 車両用灯具
JP4755276B2 (ja) 照明用光源
JP5567435B2 (ja) 車両用灯具
KR100532816B1 (ko) 차량용 전조등 및 그 제조 방법
JP4687905B2 (ja) Ｌｅｄ照明灯具
TWI442005B (zh) 照明單元
JP5410167B2 (ja) 発光モジュールおよび車両用前照灯
JP4375016B2 (ja) 発光装置
WO2013190979A1 (fr) Dispositif d'éclairage
JP2003031011A (ja) 灯具用線状光源
US9340147B2 (en) Vehicle lamp
JP4179176B2 (ja) Ｌｅｄランプ装置
JP2013513198A (ja) 照明モジュール
JP2008305802A (ja) Ｌｅｄ灯具
JP2006278309A (ja) 照明装置
JP2003158302A (ja) 発光ダイオード
JP6446202B2 (ja) 広角度拡散光学系及びこれを用いた照明装置
JPWO2012140812A1 (ja) 照明用光源
JPH10335706A (ja) 発光ダイオードランプ
JP4143074B2 (ja) 発光ダイオード
WO2021068408A1 (fr) Lampe d'éclairage intégrée à faisceau élevé et à faisceau bas
JP2006324036A (ja) 車両用灯具用ｌｅｄバルブ
JP4186026B2 (ja) Ｌｅｄ光源装置及びｌｅｄ光源装置を用いた車両前照灯
JP2007180288A (ja) 発光装置及び照明装置

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: 09831921

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09831921

Country of ref document: EP

Kind code of ref document: A1