WO2011108272A1 - 電球形ledランプおよび照明装置 - Google Patents
電球形ledランプおよび照明装置 Download PDFInfo
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- WO2011108272A1 WO2011108272A1 PCT/JP2011/001250 JP2011001250W WO2011108272A1 WO 2011108272 A1 WO2011108272 A1 WO 2011108272A1 JP 2011001250 W JP2011001250 W JP 2011001250W WO 2011108272 A1 WO2011108272 A1 WO 2011108272A1
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- Prior art keywords
- leds
- led lamp
- stage
- led
- bulb
- Prior art date
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Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
-
- 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
- F21K9/65—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction specially adapted for changing the characteristics or the distribution of the light, e.g. by adjustment of parts
-
- 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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
- F21V23/002—Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
-
- 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
- F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
- F21Y2107/60—Light sources with three-dimensionally disposed light-generating elements on stacked substrates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present invention relates to a bulb-shaped LED lamp and a lighting device, and more particularly to a bulb-shaped LED lamp suitable as an alternative light source for a halogen lamp with a reflector and a lighting device equipped with the same.
- a halogen bulb with a reflector is a combination of a bowl-shaped reflector with a concave reflective surface and a halogen bulb, and for example, it is mounted on a downlight type lighting fixture and is used for spot lighting in stores, museums, etc. It is used as.
- Patent Document 1 discloses a bulb-shaped LED lamp in which a disk-shaped substrate is provided at a position corresponding to the opening of a reflector in a halogen bulb with a reflector and a plurality of LEDs are mounted on the substrate. .
- the LED mounted on the center of the substrate and in the vicinity of the substrate during lighting is affected by the heat from the LED mounted on the periphery, and the LED mounted on the peripheral part of the substrate The temperature is higher than that.
- the LED mounted on the peripheral part of the substrate As a result, as the LED is closer to the central portion of the substrate, the light emission efficiency becomes lower.
- mount the LEDs in a line along the peripheral portion (on the circumference) of the substrate in order to eliminate the uneven light emission efficiency, but if this is done, the total number of mounted LEDs decreases, and the light amount decreases. I will.
- the bulb-shaped LED lamp according to the present invention converts a plurality of LEDs, a base, and commercial power supplied via the base into electric power for causing the plurality of LEDs to emit light.
- a light emitting member having a bowl-shaped portion, and a stage projecting inward from an inner peripheral surface of the bowl-shaped portion is an axial direction of the bowl-shaped portion
- the plurality of LEDs are arranged in a row in the circumferential direction about the axis of each stage.
- the LEDs are arranged in a row in the circumferential direction about the axial center of the bowl-like portion in each stage. It is not surrounded by LEDs. Moreover, since a part of a bowl-shaped part exists between the stage in which the said 1 LED and the said 1 LED were provided, and the other LED provided in the adjacent stage, that much, both LEDs As compared with the conventional case provided on the same plane, the heat conduction path becomes longer, and the heat of the opposite LED becomes less susceptible to each other.
- the outer peripheral surface of the part of the bowl-like portion is exposed to the outside air, it is considered that most of the outer peripheral surface is dissipated in the part, which also makes it less susceptible to the heat of the other party's LED. Therefore, since the dispersion
- the LEDs are arranged in the circumferential direction of each of the stages provided in at least two stages, that is, the LEDs are arranged in rows on at least two circumferences, the uneven luminous efficiency is eliminated. In order to do so, it is not necessary to reduce the number of LEDs in comparison with the above-mentioned conventional LED lamp which must provide the LEDs in a row on one circumference.
- the light bulb-shaped LED lamp according to the present invention comprises a plurality of LEDs, a base, and an electric power for causing commercial power supplied through the base to emit the plurality of LEDs.
- a light emitting member having a bowl-like portion, and an individual stage projecting inward from an inner circumferential surface of the bowl-like portion is provided for each of the LEDs.
- Each individual stage is provided at a position where any of the LEDs do not overlap with the other LEDs when the LEDs mounted on the LED mounting surface of the individual stage are viewed from the axial direction of the bowl portion, And, it is characterized in that the angle of the LED mounting surface is configured to be changeable.
- the LED is mounted on the individual stage protruding inward from the inner peripheral surface of the bowl-like part, the individual stage on which a certain LED is mounted and the other Since a part of the bowl-like part exists between the individual stages on which the LEDs are mounted, the heat conduction path becomes longer compared to the conventional case where both LEDs are provided on the same plane. , Mutually less susceptible to the heat of the other's LED.
- the outer peripheral surface of the part of the bowl-like portion is exposed to the outside air, it is considered that most of the outer peripheral surface is dissipated in the part, which also makes it less susceptible to the heat of the other party's LED. Therefore, since the dispersion
- each of the individual stages can be projected from an arbitrary position on the inner circumferential surface unless the LEDs overlap when viewed from the axial center direction of the bowl-like portion, one of the individual stages to eliminate the uneven light emission efficiency. It is not necessary to reduce the number of LEDs in comparison with the above-mentioned conventional LED lamp which must provide the LEDs in a row on the circumference of.
- a lighting device includes a lighting fixture and the above-described bulb-shaped LED lamp mounted on the lighting fixture, and the above-described bulb-shaped LED lamp It plays the same effect.
- FIG. 1 is a cross-sectional view of a light bulb-shaped LED lamp according to Embodiment 1 as viewed from the front. It is a top view of the said lightbulb-shaped LED lamp. It is a perspective view of the 1st member and 3 LED modules which are the structural members of the said bulb-shaped LED lamp. It is sectional drawing which looked at the lightbulb-shaped LED lamp which concerns on Embodiment 2 from the front.
- FIG. 20 is a plan view of a light bulb-shaped LED lamp according to Embodiment 5.
- FIG. 21 is a perspective view of a first member and three LED modules that are components of a light bulb-shaped LED lamp according to Embodiment 5.
- FIG. 1 is a cross-sectional view of a light bulb-shaped LED lamp 10 according to Embodiment 1 (hereinafter simply referred to as “LED lamp 10”) as viewed from the front, and FIG. 2 is a plan view thereof. In addition, FIG. 2 is drawn in the state which removed the front glass 18 mentioned later.
- the reflector-equipped LED bulb 10 is configured of a base 12, a lighting circuit unit 14, a heat radiating member 16, a front glass 18, LED modules 20, 22, 24 and the like.
- the base 12 has a main portion 26 made of an electrically insulating material.
- One end portion of the main body portion 26 is formed in a substantially cylindrical shape, and the shell 28 is fitted into the cylindrical portion. Further, one end side of the cylindrical portion is formed in a substantially frusto-conical shape, and the eyelet 30 is fixed to the top of the truncated cone.
- the base 12 conforms to a standard (for example, JIS standard) to be attached to a socket of an existing lighting device for an incandescent lamp.
- the other end portion of the cylindrical portion of the main body portion 26 is formed in a hollow shape in which the internal space expands as the distance from the eyelet 30 increases, and the lighting circuit unit 14 is accommodated in the hollow portion.
- the lighting circuit unit 14 includes a circuit board 32 and a plurality of electronic components 34 mounted on the circuit board 32.
- the lighting circuit unit 14 and the eyelet 30 are electrically connected to each other by a first lead wire 36, and the lighting circuit unit 14 and the shell 28 are electrically connected to each other by a second lead wire 38.
- the lighting circuit unit 14 converts commercial AC power supplied via the eyelet 30 and shell 28 and the first lead 36 and the second lead 38 into power for lighting the LED modules 20, 22, 24. The power is supplied to the LED modules 20, 22, 24.
- the heat dissipating member 16 is made of a heat conductive material such as aluminum, and has a neck portion 40 and a hook portion 42 connected to the neck portion 40.
- the central axis X of the neck portion 40 and the collar portion 42 is indicated by an alternate long and short dash line.
- the neck portion 40 has a substantially cylindrical shape, and is inserted from the opening of the main body portion 26 of the mouthpiece 12 and fixed to the main body portion 26.
- an adhesive for example, a silicone resin, an adhesive with good thermal conductivity (for example, an adhesive containing thermal grease etc.) (all not shown) and the like.
- the heat radiating member 16 is a combination of two members (first member 16A, second member 16B) having a plane symmetrical shape.
- FIG. 3 shows a perspective view of the first member 16A and the LED modules 20, 22, 24.
- the central axis X (of the heat dissipation member 16) when the first member 16A and the second member 16B are combined is described.
- the alphabet "A” is attached to each part of the first member 16A, and the alphabet "A” is used to indicate the corresponding part of the heat dissipation member 16 formed by combining the first member 16A and the second member 16B. It is omitted and shall be indicated only by the number.
- the first member 16A has a semi-cylindrical portion 40A serving as the neck portion 40 (FIG. 1) and a semi-cylindrical portion 42A serving as the spike-like portion 42 (FIG. 1), which are continuously provided.
- Stages 46A and 48A are provided in a plurality of stages (two stages in this example) in the central axis X direction, projecting inward (toward the central axis X) from the inner circumferential surface 44A of the half collar portion 48A.
- the first stage 46A and the second stage 48A are provided from the side closer to the bottom portion 50A of the semi-bowl portion 42A.
- the internal wiring 80, 82, 84 described later electrically connecting the LED modules 20, 22, 24 and the lighting circuit unit 14 to the bottom 50A of the first member 16A, the first stage 46A, and the second stage 48A, respectively.
- Notches 52A, 54A, and 56A which are insertion holes for the above are provided.
- first member 16A has a mating surface 58A with the second member 16B.
- first member 16A and the second member 16B are combined with their mating surfaces in combination, as shown in FIG. 2, a first annular member protruding inwardly from the inner circumferential surface 44 (toward the central axis X)
- One stage 46 and a second stage 48 are created.
- the outer shape thereof is similar to the outer shape of the reflecting mirror portion in the reflecting-mirror-equipped halogen bulb having the base of the same standard size as the base 12. That is, the reflector portion of the halogen bulb with reflector is generally bowl-shaped. Therefore, by setting the weir-like portion 42 to the same size as the weir-like shape of the reflecting mirror, the weir-like portion 42 approximates the outer shape of the reflecting mirror part.
- the LED module 20 is installed at the bottom 50 of the bowl-like portion 42, the LED module 22 is installed at the first stage 46, and the LED module 24 is installed at the second stage 48.
- the LED module 20 has a disk-shaped printed wiring board 60 and an LED 66 mounted thereon.
- the LED modules 22 and 24 are respectively annular printed wiring boards 62 and 64 and the LEDs 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78 mounted thereon.
- LEDs 67 to 78 are mounted on each of the printed wiring boards 62 and 64 at equal angular intervals (60 degrees in this example) around the ring center axis.
- the LEDs 66 to 78 are all the same, and are surface mount (SMD) type white LEDs with a lens.
- SMD surface mount
- the LEDs 67 to 72 of the LED module 22 are electrically connected in series by the wiring pattern (not shown) of the printed wiring board 62.
- the LEDs 73 to 78 of the LED module 24 are connected to the wiring pattern of the printed wiring board 64 (Not shown) are electrically connected in series.
- the heat dissipation can be individually improved by individually changing the thickness of the bottom portion 50, the first stage 46, and the second stage 48 as necessary. That is, the thickness of the bottom portion 50 can be increased in order to eliminate the influence of the heat generated in the lighting circuit unit 14. Also, as in the first stage 46, when the number of LEDs is larger than the second stage 48 compared to the second stage 48, heat is less likely to escape, so for example, the thickness of the first stage 46 By making the thickness larger than the thickness, it leads to the improvement of the heat dissipation.
- the LED module 22 and the LED module 24 are disposed on each of the first stage 46 and the second stage 48 so that the arrangement angles of the LEDs 67 to 72 and the LEDs 73 to 78 are offset by 30 degrees about the central axis X. It is provided. That is, when viewed from the central axis X in the radial direction of the bowl-like portion 42, the LEDs 67 to 78 do not overlap any of the LEDs provided on one stage with any of the LEDs provided on the other adjacent stage. It is arranged. By arranging in this manner, it is possible to suppress the uneven illuminance on the surface to be irradiated as much as possible.
- the printed wiring board 60 and the circuit board 32 are electrically connected via the internal wiring 80 inserted into the insertion hole 52. Further, the printed wiring board 62 and the circuit board 32 are electrically connected via the internal wiring 82 inserted through the insertion holes 52 and 54. Furthermore, the printed wiring board 64 and the circuit board 32 are electrically connected via the internal wiring 84 inserted through the insertion holes 52, 54 and 56.
- the internal wirings 80, 82, 84 are connected to each other by a wiring pattern (not shown) of the circuit board 32 so that the LEDs 66 to 78 are electrically connected in series.
- the LED lamp 10 has the cap 12 attachable to the existing lighting fixture for a halogen bulb. Further, the base 12 is provided with a heat dissipation member 16 having a wedge shape similar to the reflection mirror of the halogen bulb with a reflection mirror, and the outer shape of the LED lamp 10 is formed by the base 12 and the heat dissipation member 16 . For this reason, it can be installed without any problem in space to existing lighting fixtures for halogen bulbs with reflectors.
- the LED lamp 10 configured as described above When the LED lamp 10 configured as described above is attached to a lighting fixture and power is supplied through the base 12, the thirteen LEDs 67 to 78 are turned on, and each of them is heated.
- the LED 67 is surrounded by the LEDs 73, 74, 68 and 72, so the effects of heat of these four LEDs 73, 74, 68 and 72 are well It also seems to receive.
- the LED 67 and the LEDs 73 and 74 are provided on different stages and are not actually on the same plane.
- the LEDs 73 and 74 and the LED 67 are on the same plane (for example, as in the prior art), such as the second stage 48 to a part of the bowl portion 42 to the first stage 46. Compared to the case where they are disposed on the same substrate).
- the outer peripheral surface of the above-mentioned part of the bowl-like portion 42 is exposed to the outside air, it is considered that the majority is dissipated in that part, so the heat of the LEDs 73 and 74 on the LED 67 is considered to be less Be
- the LEDs 68 and 72 are on the same plane (on the same printed wiring board 62) as the LEDs 67, but do not surround the LEDs 67.
- none of the thirteen LEDs 66 to 78 is surrounded by the other LEDs in the same plane, so when these LEDs are arranged on one substrate as in the prior art Each LED is less susceptible to the heat of the other LEDs, as compared to. For this reason, it is thought that the dispersion
- each of the LED modules 20, 22, 24 may be selectively turned on. This can be achieved by incorporating a selection circuit using a known technique into the lighting circuit unit 14 and using a remote controller that can be realized by a known technique.
- the LED module 20 alone has a so-called brightness of about so-called light bulbs, so it is suitable, for example, when used as a night light.
- FIG. 4 is a cross-sectional view of a light bulb-shaped LED lamp 100 according to Embodiment 2 (hereinafter, simply referred to as “LED lamp 100”) as viewed from the front, and is a drawing similar to FIG.
- the LED lamp 100 according to the second embodiment has the same configuration as the LED lamp 10 according to the first embodiment (FIG. 1) except that the shape of the heat dissipation member is different. Therefore, about the component similar to the LED lamp 10, the same code
- the first and second stages 46 and 48 of the first embodiment are different from the first stage 104 and the second stage 106 below.
- the space is not provided, and the space is filled with a material (in this example, aluminum) which constitutes the heat dissipation member 102.
- a material in this example, aluminum
- the thickness of the ridges between the bottom and the first stage and between the first and second stages was increased.
- the heat capacity of the heat dissipation member 102 is increased, so that the heat dissipation performance is further improved, and the degree of temperature rise of the LEDs 66 to 78 (partially not shown) can be suppressed.
- the inner circumferential surface between the bottom and the first stage approaches the LED 66, and the inner circumferential surface between the first stage and the second stage becomes the LEDs 67 to 72 of the LED module 22 (partially not shown Because the inner circumferential surfaces become the reflective surfaces of the corresponding LEDs, the light from each LED can be efficiently emitted forward.
- the first stages 46 and 104 and the second stages 48 and 106 have an annular shape about the central axis X (integrally in the circumferential direction about the central axis X)
- both stages are divided into a plurality of parts in the circumferential direction, and The angle of each part (the LED mounting surface of the individual stage) can be changed.
- the base 12, the lighting circuit unit 14, the front glass 18, and the LEDs 67 to 78 are common to the first and second embodiments, illustration and description of these components are omitted, and the following description will be made. , Mainly on different parts.
- FIG. 5A is a perspective view showing a first member 202A of the first and second members constituting the heat dissipation member having the neck portion and the hook portion in the LED lamp according to the third embodiment.
- the second member (not shown) is symmetrical to the first member 202A with the central axis X as the axis of symmetry, and as in the first embodiment, the mating surfaces 204A of the first and second members are aligned.
- a heat dissipating member is configured by combining them.
- the heat dissipating member 202 will be described below on the assumption that the first member 202A and the second member (not shown) are combined.
- the heat dissipating member 202 has a neck portion 206 and a hook-like portion 208 connected to it.
- a first stage 212 and a second stage 214 protruding inward (toward the central axis X) from the inner circumferential surface 210 of the bowl-like portion 208 are provided in two stages in the axial center direction of the central axis X.
- Each of the first stage 212 and the second stage 214 is a plurality of (six (in this example, three do not appear in FIG. 5) juxtaposed in the circumferential direction about the central axis X.
- FIG. 5B and FIG. 5C show the individual stage 219 seen in the direction of the arrow A in FIG. 5A.
- the individual stage 219 has a fixed portion 222 extended from the inner circumferential surface 210 of the bowl-like portion 208 toward the central axis X, and a movable portion 224 connected thereto.
- fixed part 22 extends from the collar-like part 208 can be cast by the lost wax method, for example.
- the insertion hole of the fixing portion 222 may be opened in the thickness direction of the hook portion 208, and the end of the fixing portion 222 separately manufactured may be inserted into the insertion hole.
- the fixed portion 222 and the movable portion 224 are connected by straight pins 226 press-fit into through holes formed in each.
- the pin 226 is orthogonal to the radial direction of the collar portion 208, and the movable portion 224 is pivotally supported in the directions of the arrow U and the arrow D around the axis of the pin 226.
- a rectangular printed board 228 is fixed to the LED mounting surface 230 of the movable portion 224, and the LED 78 is mounted on the printed board 228.
- the state in which the LED mounting surface 230 and hence the main surface of the printed circuit board 228 shown in FIG. 5B are parallel to the direction orthogonal to the central axis X is referred to as the “standard state”.
- the standard state the light of the LED 78 is emitted exclusively in the direction parallel to the central axis X.
- the arrangement of the LEDs in plan view of the LED lamp is the same as that of the first embodiment shown in FIG.
- the angle of the light emitted from the LED 78 with respect to the central axis X can be changed by rotating the movable portion 224 with, for example, a fingertip from the standard state.
- a state in which light is collected toward the central axis X can be realized, and when it is rotated in the direction of arrow U, a light distribution can be obtained such that the irradiation surface is irradiated wide.
- FIG. 6 is a cross-sectional view of a light bulb-shaped LED lamp 300 (hereinafter simply referred to as “LED lamp 300”) according to the fourth embodiment, viewed from the front, and is a drawing similar to FIG.
- the LED lamp 300 has a configuration in which a light diffusion member 302 described later is added to the LED lamp 10 (FIG. 1) of the first embodiment.
- the LED lamp 300 has the same configuration as the LED 10 except that the light diffusion member 302 is provided.
- FIG. 6 the same components as those of the LED lamp 10 (FIG. 1) will be assigned the same reference numerals as in FIG. 1 and the description thereof will be omitted.
- the light diffusion member 302 will be mainly described.
- the light diffusion member 302 is generally frusto-conical in shape, and is housed in the heat dissipation member 16 with its top facing the bottom of the bowl-shaped heat dissipation member 16. In the stored state, the central axis of the truncated cone overlaps the central axis X.
- a recess 302A is provided on the top of the light diffusion member 302, and the LED 66 is accommodated in the recess 302A.
- the bottom surface of the light diffusion member 302 is fixed to the front glass 18 by light-transmitting adhesion, and the light diffusion member 302 is assembled to the heat dissipation member 16 simultaneously with the attachment of the front glass 18 to the heat dissipation member 16.
- the light diffusion member 302 is made of a translucent resin such as an acrylic resin, glass, or another translucent material.
- the light diffusion member 302 By providing the light diffusion member 302 in this manner, part of the light emitted from the LEDs 67 to 78 is reflected by the side surface 302 B of the light diffusion member 302, or the other part is incident inside the light diffusion member 302.
- the light incident on the inside repeats reflection on the inside and is emitted to the outside. For this reason, the emission range (emission angle) of light will be expanded rather than LED lamp 10 as LED lamp 100 whole.
- the LED module 20 may be removed, and the light reflecting member 302 may be in the shape of a perfect truncated cone having no recess 302A.
- FIG. 7 is a cross-sectional view of a light bulb-shaped LED lamp 400 according to Embodiment 5 (hereinafter simply referred to as “LED lamp 400”) as viewed from the front, and FIG. 8 is a plan view of the same. 1, it is the figure drawn similarly to FIG.
- the LED module 20 configured of one LED 66 from the side close to the base 12 in the central axis X direction, and the LED having a configuration in which six LEDs 67 to 72 are annularly distributed.
- the module 22 and the LED module 24 having a configuration in which six LEDs 73 to 78 are arranged in an annular shape larger than the annular shape are arranged in this order, in the LED lamp 400 of the fifth embodiment, the size of the LED module The order of the relationship is reversed.
- the LED module 402 having a configuration in which six LEDs 73 to 78 are annularly arranged from the central axis X direction and the side close to the base, and the six LEDs 67 to 72 are smaller than the annular
- An annularly arranged LED module 404 and an LED module 406 composed of one LED 66 are arranged in this order.
- the lighting circuit unit 14 is disposed in a so-called horizontal orientation in which the circuit board 32 is provided in a posture orthogonal to the central axis X.
- the lighting circuit unit 408 is provided in a posture in which the circuit board 410 is parallel to the central axis X, that is, so-called vertical mounting.
- the LED lamp 400 has the same configuration as the LED lamp 10 except that the arrangement order of the LED modules and the installation direction of the lighting circuit unit are different. Therefore, in FIG. 7 and FIG. 8, the component substantially the same as that of the LED lamp 10 is given the same reference numeral, and the description thereof will be omitted.
- the lighting circuit unit 408 includes a circuit board 410 and a plurality of electronic components 412 mounted on the circuit board 410.
- the end portion of the circuit board 410 on the side close to the shell 28 is inserted into a pair of opposing grooves (not shown) provided in parallel with the central axis X in the inner circumferential surface 26A of the main body 26 of the mouthpiece 12 , Is housed in the main body portion 26.
- the other end portion of the circuit board 410 protrudes from the base 12 and extends to the collar portion 416 of the heat dissipation member 414.
- the heat radiating member 414 is a combination of two members (first member 414A and second member 414B) having plane symmetry.
- FIG. 9 is a perspective view of the first member 414A and the LED modules 402, 404, and 406, and is drawn in the same manner as FIG. Also in the fifth embodiment, as in the first embodiment, each part of the first member 414A is given an alphabet "A", and the heat dissipation member 414 formed by combining the first member 414A and the second member 414B. In the case where the corresponding part is indicated, the alphabet "A" is omitted and only indicated by the number.
- the first member 414A has a semi-cylindrical portion 418A serving as a neck portion 418 (FIG. 7) and a semi-cylindrical portion 416A serving as a brim portion 416 (FIG. 7) connected thereto. Unlike the first embodiment, the bowl-like portion 416 does not have a bottom (FIG. 7).
- stages 422A, 424A are provided in the center axis X direction so as to protrude inward (toward the center axis X) from the inner circumferential surface 420A of the half-bar-like portion 416A.
- the stage 422A is provided to fix a leg 434 of a mounting member 430 described later for the LED module 406, and is hereinafter referred to as a leg fixing stage 422A.
- the stage 424A is a stage for installing the LED module 402, and is hereinafter referred to as a first stage 424A.
- the second stage 426 for installing the LED module 404 will be described later.
- the first member 414A has a mating surface 428A with the second member 414B.
- a leg fixing stage is provided so as to protrude in an annular shape (toward the central axis X) from the inner circumferential surface 420 (FIG. 8) 422, a first stage 424 is created.
- the outer shape thereof is similar to the outer shape of the reflector portion in the halogen bulb with a reflector, as in the first embodiment.
- the LED module 406 is fixed to the leg fixing stage 422 via the mounting member 430.
- the LED module 406 has the same configuration as the LED module 20 (FIG. 3) of the first embodiment.
- the mounting member 430 has a disk-shaped pedestal 432 and three legs 434 extending in three directions from the outer periphery of the pedestal 432.
- the mounting member 430 is made of metal having excellent thermal conductivity, such as aluminum.
- the LED module 406 is fixed to the pedestal 432 by an adhesive having excellent thermal conductivity.
- the tip of each of the three legs 434 is bent in a “ ⁇ ” shape, and the bent portion is joined to the leg fixing stage 422 by solder (not shown) or the like.
- the largest LED module 402 among the three LED modules 402, 404, and 406 is installed.
- the LED module 402 has the same configuration as the LE module 24 (FIG. 3) except that the printed wiring board 436 is slightly smaller.
- the LED module 404 has the same configuration as the LED module 22 (FIG. 3) except that the printed wiring board 438 is slightly smaller.
- the LED module 404 is attached to the hook portion 416 via the fixing member 440.
- the fixing member 440 includes an annular portion 442 and six arm portions 446 extending radially from the outer periphery of the annular portion 442 at equal angular intervals.
- the tip end surface of the arm portion 446 is cut in accordance with the inclination (curved surface) of the inner circumferential surface 420 of the hook-like portion 416.
- the fixing member 440 is fitted in the collar portion 416 in a state where the central axis of the annular portion 442 is aligned with the central axis X. At this time, as shown in FIG. 8, none of the arm portions 446 are fitted so as not to overlap the LEDs 73 to 78 constituting the LED module 402 in plan view. Here, preferably, each of the arms 446 is fitted so as to be located in the middle between adjacent LEDs.
- each of the arm portions 446 is in contact with the inner peripheral surface of the hook-like portion 416 over substantially the entire surface.
- the tip end portions of the arm portions 446 are joined to the collar portion 416 by solder (not shown) and integrated with the collar portion 416.
- the fixing member 440 forms a part of the heat dissipating member 414, and constitutes a second stage 426 protruding inward (toward the central axis X) from the inner circumferential surface 420 of the bowl-like portion 416.
- the LED module 404 is disposed on the annular portion 442 of the second stage 426.
- Each of the LED modules 402, 404, and 406 and the lighting circuit unit 408 are electrically connected by a wire (not shown) through which the hollow portion of the heat dissipation member 414 is inserted.
- the LED lamp 400 configured as described above, none of the 13 LEDs 66 to 78 is surrounded by other LEDs in the same plane, so these LEDs are arranged on one substrate as in the prior art. In comparison with the case, each LED is less susceptible to the heat of the other LEDs, and as a result, it is considered that the variation in luminous efficiency between each LED can be suppressed as compared to the conventional case. It is the same as in the case of Form 1.
- the embodiments of the bulb-shaped LED lamp have been described above, it is also possible to configure the lighting device with a lighting fixture and the bulb-shaped LED lamp according to any of the above-mentioned embodiments mounted on the lighting fixture. is there.
- the bulb-shaped LED lamp has the outer shape of the heat dissipating member attached to the base in the same shape (outer shape) as the shape (outer shape) of the reflector of the halogen bulb with reflector, Therefore, the lighting device can be suitably combined with a lighting device for a halogen bulb with a reflector (for example, a lighting device of the downlight type).
- the embodiment of the light bulb-shaped LED lamp is of course not limited to the above-mentioned embodiment, and may be, for example, the following embodiment.
- stages are provided at two stages up and down in the direction of the central axis X, but the number of stages is not limited to two stages (two) and three stages (three) or more I don't care.
- the size of the reflector varies depending on the size of the halogen bulb to be substituted, mainly for the purpose of making it an alternative light source of the halogen bulb with a reflector.
- the size of the heat dissipation member formed in accordance with the size of the reflecting mirror also changes, and the number (stage number) of stages provided is also changed depending on the size of the heat dissipation member.
- the LED 66 is provided also at the bottom of the heat dissipation member, but the LED at the bottom is not necessarily required. When the LED is not provided, the storage space of the lighting circuit unit 14 can be expanded by raising the bottom of the bowl-like portion to the side opposite to the side where the lighting circuit unit 14 exists. It becomes.
- the LED mounting surfaces of the individual stages 216, 217, and 218 are on the same plane, and the LED mounting surfaces of the individual stages 219, 220, and 221 are on the same plane.
- the individual stages are arranged, the invention is not limited to this.
- the individual stages may be arranged as follows.
- the individual stages may be arranged such that the LED mounting surfaces of the individual stages are arranged on a virtual spiral line whose pivot axis is the central axis X.
- the spiral in this case is preferably in the form of a so-called diverging spiral in which the distance from the central axis X becomes longer as it approaches the opening of the bowl-like portion. Also, as a matter of course, it is preferable that none of the LEDs overlap with other LEDs when viewed from the central axis X direction.
- one LED is mounted on one individual stage, but the number of LEDs mounted is not limited to one. That is, a plurality of LEDs to be used may be provided for each two LEDs or for every three LEDs (that is, for each predetermined number of LEDs).
- the number of LEDs to be mounted may be different between the individual stages.
- the configuration of the first, second, fourth or fifth embodiment and the third embodiment can be mixed.
- the first stage may be the configuration of the first stage of Embodiment 1 or 2
- the second stage may be configured of the individual stages of Embodiment 3, and vice versa.
- At least one of the stages provided in a plurality of stages can be an individual stage group as in the third embodiment.
- the self-ballasted LED lamp according to the present invention can be suitably used, for example, as an alternative light source of a halogen lamp with a reflector.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
Description
<実施の形態1>
図1は実施の形態1に係る電球形LEDランプ10(以下、単に「LEDランプ10」と言う。)を正面から見た断面図であり、図2は同平面図である。なお、図2は、後述する前面ガラス18を取り除いた状態で描いている。
<実施の形態2>
図4は実施の形態2に係る電球形LEDランプ100(以下、単に「LEDランプ100」と言う。)を正面から見た断面図であり、図1と同様に描いた図である。
<実施の形態3>
実施の形態1,2では、第1ステージ46,104、第2ステージ48,106は、中心軸Xを中心とする環状を成したもの(中心軸Xを中心とする円周方向に一体的に形成されたもの)としたが、実施の形態3に係る電球形LEDランプ(以下、単に「LEDランプ」と言う。)では、両ステージを円周方向に複数に分割したものとし、かつ、分割された各々の部分(個別ステージのLED搭載面)の角度を変更可能に構成することとしている。
<実施の形態4>
図6は実施の形態4に係る電球形LEDランプ300(以下、単に「LEDランプ300」と言う。)を正面から見た断面図であり、図1と同様に描いた図である。
実施の形態4のLEDランプ300において、LEDモジュール20を取り除くと共に、光反射部材302を、凹部302Aを有しない完全な円錐台形状としても構わない。
<実施の形態5>
図7は実施の形態5に係る電球形LEDランプ400(以下、単に「LEDランプ400」と言う。)を正面から見た断面図であり、図8は同平面図であって、それぞれ、図1、図2と同様に描いた図である。
(1)実施の形態1,2,4,5では、中心軸Xの方向上下2段にステージを設けたが、ステージの数は2段(2個)に限らず3段(3個)以上でも構わない。反射鏡付きハロゲン電球の代替光源とすることを主な目的とするため、代替されるハロゲン電球のサイズによって反射鏡の大きさが異なる。よって、当該反射鏡の大きさに合わせて形成される放熱部材の大きさも異なってくるため、放熱部材の大きさに依って設けるステージの個数(段数)も変更されるからである。
(2)実施の形態1,2では、放熱部材の碗状部底部にもLED66を設けることとしたが、当該底部のLEDは必ずしも必要ない。当該LEDを設けないこととした場合には、碗状部の底部をその分、点灯回路ユニット14の存する側とは反対側に底上げすることにより、点灯回路ユニット14の収納スペースを広げることが可能となる。
(3)実施の形態3では、標準状態において、個別ステージ216,217,218のLED搭載面が同一平面上にあり、個別ステージ219,220,221のLED搭載面が同一平面上にあるように、個別ステージ各々を配置したが、これに限らず、例えば、以下のように各個別ステージを配置しても構わない。
(4)実施の形態3では、一の個別ステージには、LEDを1個搭載することとしたが、搭載するLEDの個数は1個に限らない。すなわち、使用する複数個のLEDを2個のLED毎に、あるいは3個のLED毎に(すなわち、所定個数のLED毎に)各個別ステージ設けても構わない。
(5)また、ステージに関し、実施の形態1,2,4または5の構成と実施の形態3とを混合させた形態とすることもできる。例えば、第1ステージは、実施の形態1または2の第1ステージの構成とし、第2ステージを実施の形態3の個別ステージ群で構成することができ、またその逆も可能である。
12 口金
14,408 点灯回路ユニット
16,102,202,414 放熱部材
42,208 碗状部
46,104,212,424 第1ステージ
48,106,214,426 第2ステージ
66~78 LED
216~221 個別ステージ
230 搭載面
Claims (6)
- 複数個のLEDと、口金と、当該口金を介して供給される商用電力を前記複数のLEDを発光させるための電力に変換する点灯回路とを有する電球形LEDランプであって、
碗状部を有する放熱部材を備え、
前記碗状部の内周面から内側に突設されたステージが、当該碗状部の軸心方向に少なくとも2段に設けられており、
各ステージの、前記軸心を中心とする円周方向に前記複数個のLEDが列設されていることを特徴とする電球形LEDランプ。 - 少なくとも一のステージは、前記円周方向に複数に分割されていて、分割された各々の部分のLED搭載面の角度が変更可能に構成されていることを特徴とする請求項1に記載の電球形LEDランプ。
- 前記軸心から前記碗状部の径方向に見て、一のステージに設けられたいずれのLEDも、隣接するステージに設けられたいずれのLEDと重ならない位置に各LEDが配されていることを特徴とする請求項1または2に記載の電球形LEDランプ。
- 複数個のLEDと、口金と、当該口金を介して供給される商用電力を前記複数のLEDを発光させるための電力に変換する点灯回路とを有する電球形LEDランプであって、
碗状部を有する放熱部材を備え、
前記碗状部の内周面から内側に突設された個別ステージが前記LED毎に設けられており、
各個別ステージは、当該個別ステージのLED搭載面に搭載されたLEDを前記碗状部の軸心方向から見て、いずれのLEDも他のLEDと重ならない位置に設けられており、かつ、前記LED搭載面の角度が変更可能に構成されていることを特徴とする電球形LEDランプ。 - 前記放熱部材の前記碗状部の外形は、前記口金と同サイズの口金を有する反射鏡付きハロゲン電球における反射鏡部分の外形と近似していることを特徴とする請求項1~4のいずれか1項に記載の電球形LEDランプ。
- 照明器具と、
当該照明器具に装着された請求項1~5のいずれか1項に記載の電球形LEDランプと、
を備えることを特徴とする照明装置。
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US13/387,345 US8393757B2 (en) | 2010-03-04 | 2011-03-03 | Light-bulb type LED lamp and illumination apparatus |
JP2011523243A JP4834800B2 (ja) | 2010-03-04 | 2011-03-03 | 電球形ledランプおよび照明装置 |
CN201180003525.5A CN102472466B (zh) | 2010-03-04 | 2011-03-03 | 电灯泡形led灯以及照明装置 |
EP11750385A EP2447597A4 (en) | 2010-03-04 | 2011-03-03 | ELECTROLUMINESCENT DIODE LAMP TYPE OF ELECTRIC BULB TYPE AND LIGHTING APPARATUS |
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EP (1) | EP2447597A4 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
JPWO2011108272A1 (ja) | 2013-06-20 |
CN102472466A (zh) | 2012-05-23 |
EP2447597A1 (en) | 2012-05-02 |
EP2447597A4 (en) | 2013-02-13 |
CN102472466B (zh) | 2014-04-02 |
US8393757B2 (en) | 2013-03-12 |
US20120120661A1 (en) | 2012-05-17 |
JP4834800B2 (ja) | 2011-12-14 |
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