WO2011135766A1 - ランプ及び照明装置 - Google Patents
ランプ及び照明装置 Download PDFInfo
- Publication number
- WO2011135766A1 WO2011135766A1 PCT/JP2011/000863 JP2011000863W WO2011135766A1 WO 2011135766 A1 WO2011135766 A1 WO 2011135766A1 JP 2011000863 W JP2011000863 W JP 2011000863W WO 2011135766 A1 WO2011135766 A1 WO 2011135766A1
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- WO
- WIPO (PCT)
- Prior art keywords
- light source
- heat sink
- lamp
- heat
- present
- Prior art date
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Classifications
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- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
-
- 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
- F21K9/20—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
- F21K9/232—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 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/005—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with keying means, i.e. for enabling the assembling of component parts in distinctive positions, e.g. for preventing wrong mounting
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- 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
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
- F21V19/004—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by deformation of parts or snap action mountings, e.g. using clips
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- 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
- F21V3/00—Globes; Bowls; Cover glasses
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- 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
- F21Y2105/00—Planar light sources
- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present invention relates to a lamp and a lighting device, and more particularly to a lamp and a lighting device using a semiconductor light emitting device.
- LEDs Light Emitting Diodes
- LED lamps have been proposed for the purpose of suppressing the temperature rise of the LEDs (Patent Documents 1, 2 and 3).
- FIG. 13 is a cross-sectional view of an LED lamp 80 according to Conventional Example 1 disclosed in Patent Document 1. As shown in FIG.
- the LED lamp 80 according to Conventional Example 1 disclosed in Patent Document 1 is disposed between a light source 811 configured of a plurality of LED chips, a base 812, and the light source 811 and the base 812. And an outer shell member 814 made of metal containing the lighting circuit 813.
- the outer shell member 814 has a peripheral portion 815 exposed to the outside, a light source attachment portion 816 integrally formed on the peripheral portion 815, and a concave portion 814a formed inside the peripheral portion 815.
- a light source 811 is attached to the top surface of the light source attachment portion 816.
- the light source 811 is covered by a translucent cover 817.
- the inner surface of the recess 814 a of the outer shell member 814 is provided with an insulating member 818 formed along the inner surface shape.
- the outer shell member 814 in which the peripheral portion 815 and the light source attachment portion 816 are integrally formed is used, heat generated from the LED chip of the light source 811 is used as a light source Heat can be efficiently conducted from the attachment portion 816 to the peripheral portion 815. Thereby, the cooling performance to the light source 811 can be improved, and the temperature rise of the LED chip can be suppressed.
- Patent Document 2 discloses a bulb-type LED lamp in which the LED lamp 80 disclosed in Patent Document 1 is further improved.
- the bulb-type LED lamp disclosed in Patent Document 2 is a LED lamp 80 shown in FIG. 13 in which a thermally conductive resin is further formed between the light source mounting portion 816 and the light source 811. This makes it possible to suppress the temperature rise of the LED chip even when using a high power LED chip with high light output.
- FIG. 14 is an external perspective view of an LED lamp according to Conventional Example 2 disclosed in Patent Document 3. As shown in FIG. 14
- the LED lamp 90 As shown in FIG. 14, the LED lamp 90 according to Conventional Example 2 disclosed in Patent Document 3 generates the light source module and the light transmitting portion 917 which is a light transmitting cover covering the light source module on which the LED is mounted. And a driver circuit portion (not shown) for driving the light source module, and a base portion 912 electrically connected to the driver circuit portion.
- the heat dissipating unit 915 includes a heat dissipating fin 915 a and a fixing cylinder 915 b for fixing the heat dissipating fin 915 a.
- the heat generated from the light source module is conducted to the heat dissipating fins 915a and released from the heat dissipating fins 915a to the outside air.
- JP 2006-313717 A JP, 2009-037995, A JP, 2009-004130, A
- the LED lamp 90 disclosed in Patent Document 3 convection of heat does not occur efficiently in the heat dissipating portion 915, and the heat dissipating effect of the heat dissipating fins 915a does not function sufficiently. Therefore, the LED lamp 90 disclosed in Patent Document 3 has a problem that the temperature rise of the LED can not be sufficiently suppressed.
- the present invention has been made to solve such a problem, and the temperature rise of the semiconductor light emitting element is suppressed to prevent the lowering of the luminous flux without lowering the assembling workability of the lamp, and the predetermined illuminance is obtained. It is an object of the present invention to provide a lamp and a lighting device capable of obtaining
- one aspect of a lamp according to the present invention includes a light source having a semiconductor light emitting element, a heat radiating body thermally coupled to the light source, and the light source which is accommodated in the heat radiating body A lighting circuit for lighting, and a base for supplying electric power to the lighting circuit, wherein the heat radiating body includes a first heat radiating member covering at least the lighting circuit, and a second heat radiating member in which the light source is disposed. The edge of the second heat dissipating member is fitted in the concave or the convex of the first heat dissipating member.
- the edge of the second heat dissipation member is fitted to the concave or convex portion of the first heat dissipation member, the contact area between the first heat dissipation member and the second heat dissipation member can be increased. Thereby, the heat dissipation performance of the light source can be improved. Moreover, the adhesiveness of a 1st thermal radiation member and a 2nd thermal radiation member can also be improved by this structure. Furthermore, since the heat dissipating member is composed of at least a plurality of first heat dissipating members and a plurality of second heat dissipating members, the lighting circuit can be easily incorporated into the first heat dissipating member.
- an outer outline of a vertical cross-sectional shape at the end edge of the second heat dissipation member, and an outer outline of a vertical cross-sectional shape of the recess or the protrusion of the first heat release member Preferably, at least one of the two includes a curved portion.
- the adhesion between the first heat radiating member and the second heat radiating member can be further improved, and the contact area between the first heat radiating member and the second heat radiating member can be further increased. Performance can be further improved.
- any of the shape of the curve at the end edge of the second heat radiation member and the shape of the curve at the recess or the protrusion of the first heat radiation member is a substantially semicircular arc.
- the adhesion between the first heat dissipation member and the second heat dissipation member can be further improved, and the contact area between the first heat dissipation member and the second heat dissipation member can be further increased.
- the edge shape of the second heat dissipation member is a circular arc, when the second heat dissipation member is attached to the first heat dissipation member, the frictional resistance between the second heat dissipation member and the first heat dissipation member can be reduced. The fitting operation of the member and the second heat radiation member can be easily performed.
- the first heat radiating member has the concave portion, and the end edge of the second heat radiating member is a convex portion fitted to the concave portion.
- the edge of the second heat dissipation member is a convex portion, the frictional resistance between the second heat dissipation member and the first heat dissipation member can be further reduced, and the fitting between the first heat dissipation member and the second heat dissipation member The joint work can be done more easily.
- the first heat radiation member is a cylinder, and the recess of the first heat radiation member is recessed toward the cylinder axis of the first heat radiation member; It is preferable that the convex portion of the heat radiation member protrudes toward the side surface portion of the first heat radiation member.
- the second heat dissipation member can be mounted from the opening side of the first heat dissipation member which is a cylindrical body, the lighting circuit can be easily accommodated in the first heat dissipation member, and the assembly workability can be improved. Can. Furthermore, since the accuracy of the installation position of the lighting circuit can be improved by the improvement of the assembling workability, the electrical insulation between the lighting circuit and the heat radiating body can be easily ensured.
- a longitudinal groove is formed in the convex portion of the second heat dissipation member, and a protrusion that fits into the longitudinal groove is formed in the first heat dissipation member Is preferred.
- first heat radiation member and the second heat radiation member can be configured by the two uneven fitting structures of the uneven structure at the end edge of the first heat radiation member and the uneven structure of the protrusion and the vertical groove
- adhesion and contact area between the first and second heat radiating members can be further improved.
- a part of the second heat radiation member is configured to be elastically deformed.
- the second heat radiation member includes a skirt portion extending along an inner circumferential shape of the first heat radiation member, and the notch portion is formed in the skirt portion Is preferred.
- the skirt portion of the second heat dissipation member receives stress from the inner surface of the first heat dissipation member as the second heat dissipation member is inserted into the first heat dissipation member. .
- the convex portion is also elastically deformed as the skirt portion is elastically deformed in the inward direction. Therefore, the convex portion of the second heat radiating member can be easily fitted into the concave portion of the first heat radiating member.
- the first heat radiating member has the convex portion, and the end edge of the second heat radiating member is a concave portion fitted to the convex portion.
- the end edge of the second heat radiation member becomes a concave portion.
- the second heat radiation member side of the first heat radiation member is elastically deformed.
- the second heat dissipation member side of the first heat dissipation member is elastically deformed, so that the second heat dissipation member can be easily attached to the first heat dissipation member.
- a notch portion is formed on the second heat radiation member side of the first heat radiation member.
- one aspect of a lighting device according to the present invention includes the lamp according to the present invention.
- a lighting device including a lamp with excellent heat dissipation can be realized, and a lighting device with low power consumption can be provided.
- the first heat radiation member and the second heat radiation member are fitted by the concavo-convex structure, so the contact area between the first heat radiation member and the second heat radiation member can be increased.
- the heat dissipation performance of the Thereby, since the temperature rise of the semiconductor light emitting element of the light source can be suppressed, it is possible to prevent the decrease of the luminous flux of the light source and obtain the predetermined illuminance.
- the adhesion between the first and second heat radiation members is improved by the uneven structure, so that the holding performance of the first and second heat radiation members can be improved.
- the heat dissipating member is composed of a plurality of the first heat dissipating member and the second heat dissipating member, the lighting circuit can be easily incorporated in the first heat dissipating member, and the assembling workability of the lamp is reduced. Absent.
- FIG. 1 is an exploded perspective view of a lamp according to Embodiment 1 of the present invention.
- FIG. 2A is a cross-sectional view of a lamp according to Embodiment 1 of the present invention.
- FIG. 2B is an enlarged sectional view of an essential part of the lamp according to Embodiment 1 of the present invention (enlarged view of a region A surrounded by a broken line in FIG. 2A).
- FIG. 3 is an enlarged perspective view of a heat sink in the lamp according to Embodiment 1 of the present invention.
- FIG. 4 is an enlarged perspective view of a heat sink in a lamp according to a modification of Embodiment 1 of the present invention.
- FIG. 1 is an exploded perspective view of a lamp according to Embodiment 1 of the present invention.
- FIG. 2A is a cross-sectional view of a lamp according to Embodiment 1 of the present invention.
- FIG. 2B is an enlarged sectional view of an essential part of the lamp according to Em
- FIG. 5 is an enlarged perspective view of a heat sink in the lamp according to Embodiment 2 of the present invention.
- FIG. 6 is a cross-sectional view of a lamp according to a third embodiment of the present invention.
- FIG. 7 is an enlarged perspective view of a heat sink in the lamp according to Embodiment 3 of the present invention.
- FIG. 8 is an enlarged perspective view of a heat sink in a lamp according to a modification of Embodiment 3 of the present invention.
- FIG. 9A is a cross-sectional view of a lamp according to a fourth embodiment of the present invention.
- FIG. 9B is an enlarged sectional view of an essential part of the lamp according to the fourth embodiment of the present invention (enlarged view of a region B surrounded by a broken line in FIG. 9A).
- FIG. 10 is an enlarged perspective view of a heat sink in the lamp according to Embodiment 4 of the present invention.
- FIG. 11 is a schematic cross-sectional view of a lighting device according to the present invention.
- FIG. 12A is an enlarged cross-sectional view of a heat dissipating member in a lamp according to Modification A of the present invention.
- FIG. 12B is an enlarged cross-sectional view of a heat dissipating member in a lamp according to a modified example B of the present invention.
- FIG. 12C is an enlarged cross-sectional view of a heat dissipating member in a lamp according to Modification C of the present invention.
- FIG. 12D is an enlarged cross-sectional view of a heat dissipating member in a lamp according to Variation D of the present invention.
- FIG. 13 is a cross-sectional view of an LED lamp according to Conventional Example 1.
- FIG. 14 is a cross-sectional view of an LED lamp according to Conventional Example 2.
- FIG. 1 is an exploded perspective view of a lamp 1 according to a first embodiment of the present invention.
- FIG. 2A is a cross-sectional view of the lamp 1 according to Embodiment 1 of the present invention.
- FIG. 2B is an enlarged view of a region A surrounded by a broken line in FIG. 2A, and is an enlarged sectional view of an essential part of the lamp 1 according to the first embodiment of the present invention.
- the lamp 1 includes an LED module 11 which is a light source having a semiconductor light emitting element, a cap 12 for receiving power, and the LED module 11 A lighting circuit 13 disposed between the base 12 and the base 12 for supplying power received from the base 12 to the LED module 11, and a radiator 14 thermally coupled to the LED module 11 are provided.
- LED module 11 which is a light source having a semiconductor light emitting element
- cap 12 for receiving power
- LED module 11 A lighting circuit 13 disposed between the base 12 and the base 12 for supplying power received from the base 12 to the LED module 11, and a radiator 14 thermally coupled to the LED module 11 are provided.
- the LED module 11 is a light emitting module (light emitting unit) that emits predetermined light.
- the LED module 11 is configured of a rectangular ceramic substrate 11a, a plurality of LED chips 11b mounted on one surface of the ceramic substrate 11a, and a sealing resin 11c for sealing the LED chip 11b.
- Predetermined phosphor particles are dispersed in the sealing resin 11c, and the light emitted from the LED chip 11b is converted into a desired color by the phosphor particles.
- a blue LED that emits blue light is used as the LED chip 11 b, and yellow phosphor particles are used as the phosphor particles.
- the yellow phosphor is excited by the blue emission light of the blue LED to emit yellow light, and white light is emitted from the LED module 11 by the yellow light and the blue light of the blue LED.
- about 100 LED chips 11b are mounted on the ceramic substrate 11a in a matrix.
- the cap 12 is, for example, a screw-in cap such as E26 or E17, and is a power receiving unit for receiving AC power by two contacts of a top contact and a side contact.
- the power received by the cap 12 is input to the power input unit of the circuit board 13b via a lead wire (not shown).
- a base of another structure used for a bulb-type lamp may be used.
- the lighting circuit 13 includes a plurality of circuit elements 13a that constitute a circuit for causing the LED chip 11b of the LED module 11 to emit light, and a circuit board 13b on which the circuit element 13a is mounted.
- the lighting circuit 13 is accommodated in the heat sink 14 via the resin case 18.
- the circuit element 13 a is composed of a plurality of components, converts alternating current power received from the base 12 into direct current power, and supplies the direct current power to the LED chip 11 b of the LED module 11. Thus, the LED chip 11b emits light.
- the plurality of circuit elements 13a are formed of electrolytic capacitors (vertical capacitors), ceramic capacitors (horizontal capacitors), resistance elements, voltage conversion elements including coils, and semiconductor elements of IPD (intelligent power devices).
- the circuit board 13 b is a disk-like printed board, and a plurality of circuit elements 13 a are mounted on one surface.
- the circuit board 13 b is held by the resin cap 19 by a locking claw of the resin cap 19 described later.
- the heat sink 14 is a member that is thermally coupled to the LED module and dissipates the heat generated from the LED module 11.
- the heat dissipating body 14 is configured by at least two or more heat dissipating members, and in the present embodiment, is configured by the heat sink 15 and the light source mounting member 16.
- the heat sink 15 is a first heat radiating member according to the present invention, and is configured to cover the lighting circuit 13.
- the heat sink 15 is a casing of a metal cylinder having two openings in the vertical direction, and is a first opening 15a constituting an opening on the glove 17 side and a second opening constituting an opening on the cap 12 side And 15b.
- the diameter of the first opening 15a is larger than the diameter of the second opening 15b, and the heat sink 15 has a truncated cone shape as a whole.
- the axis (cylindrical axis) of the cylindrical body of the heat sink 15 is the same as the axis of the lamp, and the heat sink is a rotating body whose central axis is the axis of the lamp.
- the heat sink 15 is made of an aluminum alloy material. Further, the surface of the heat sink 15 is anodized to improve the thermal emissivity.
- an annular recess 15 c is formed on the inner surface of the heat sink 15 at the portion to which the light source attachment member 16 is attached at the end of the heat sink 15 on the first opening 15 a side.
- the recess 15 c is formed in a direction perpendicular to the cylinder axis of the heat sink 15 and is recessed toward the outside of the heat sink 15. Further, the recess 15 c can be formed by pressing a part of the side surface portion of the heat sink 15, and both the inner side surface portion and the outer side surface portion of the heat sink 15 protrude outward of the heat sink 15.
- the recess 15c (the depression start position of the recess 15c) is formed at a position in the range of 1 mm to 15 mm from the edge on the first opening 15a side of the heat sink 15 toward the second opening. That is, if there is no end portion of at least 1 mm, the fitting of the light source attaching member 16 becomes insufficient, and the fixing of the globe 17 also becomes insufficient. Further, it may be provided at a deep position of 15 mm or more, but if it is formed at a too deep position, the space of the lighting circuit 13 is reduced.
- the recess 15 c is configured such that the inner side surface portion and the outer side surface portion of the heat sink 15 also protrude outward of the heat sink 15 by press processing, the present invention is not limited thereto.
- the outer side surface portion of the heat sink 15 may be flat and may be a recess having a recess only on the inner side surface portion.
- the recess can be formed by scraping the inner peripheral surface of the heat sink 15.
- the light source attachment member 16 is a second heat radiation member according to the present invention, and is a holder made of a metal substrate for disposing the LED module 11.
- the light source attachment member 16 is formed into a disk shape by aluminum die casting, and is mounted to the recess 15 c of the heat sink 15.
- the light source mounting member 16 is formed with a notch for passing a lead wire connecting the lighting circuit 13 and the LED module 11.
- the light source attachment member 16 is formed with a recess 16 a for disposing the LED module 11.
- the LED module 11 disposed in the recess 16 a is clamped by the fastener 21.
- an end edge of the light source attachment member 16 which is a portion in contact with the heat sink 15 is configured as a convex portion 16 b in the concave portion 15 c of the heat sink 15.
- the convex portion 16 b is formed to project toward a side surface portion which is an inner peripheral surface of the heat sink 15.
- the end edge of the light source attachment member 16, that is, the convex portion 16b is fitted in the concave portion 15c of the heat sink 15. That is, the convex portion 16 b of the light source attachment member 16 is fitted in the concave portion 15 c of the heat sink 15.
- the outer diameter of the light source attachment member 16 including the convex portion 16 b is formed to be slightly larger than the inner diameter of the concave portion formation planned portion (the planned formation portion of the concave portion 15 c) in the heat sink 15.
- the recessed portion 15 c may be formed to a depth which the convex portion 16 b of the light source attaching member 16 allows.
- the concave portion 15 c and the convex portion 16 b are pressed against each other, so that the adhesion between the heat sink 15 and the light source attaching member 16 is improved.
- the outer outline of the vertical cross-sectional shape of the recess 15 c of the heat sink 15 includes a curved portion, and the vertical cross-sectional shape of the convex 16 b of the light source attachment member 16 The outline also includes a curved portion.
- the vertical cross section is a cross section when cut by a plane including the axis of the lamp, and is a cross section of FIG. 2A and FIG. 2B.
- the outline of the vertical cross-sectional shape of the recess 15c of the heat sink 15 is a substantially semicircular arc
- the vertical cross-sectional shape of the convex 16b of the light source attachment member 16 The outer line of is also a substantially semicircular arc.
- the curved shape of the outline of the concave portion 15 c of the heat sink 15 and the curved shape of the outline of the convex portion 16 b of the light source mounting member 16 coincide with each other at the contact portion between the heat sink 15 and the light source mounting member 16.
- the heat sink 15 and the light source attachment member 16 are engaged with each other by fitting the concave portion 15c and the convex portion 16b, so that the inner surface portion of the concave portion 15c and the outer surface portion of the convex portion 16b are engaged. It is configured to be entirely in contact in a cross sectional view of the portion, and is configured to be in contact at substantially the entire circumference of the inner surface of the heat sink 15 in the fitting portion. That is, the convex portion 16 b of the light source attachment member 16 is configured to fit in the concave portion 15 c of the heat sink 15.
- the inner diameter R1 of the concave portion 15c of the heat sink 15 and the outer diameter R2 of the convex portion 16b of the light source attachment member 16 both have a radius of 3 mm.
- the thickness t of the main plate of the light source attachment member 16 was 6 mm.
- FIG. 3 is an enlarged perspective view of the heat sink 14 (the heat sink 15 and the light source attachment member 16) in the lamp 1 according to the first embodiment of the present invention.
- the recess 15 c of the heat sink 15 is formed in a ring shape along the inner peripheral surface on the side of the first opening 15 a of the heat sink 15. Also, the convex portion 16 b of the light source attachment member 16 is formed over the entire periphery of the side edge of the light source attachment member 16.
- the light source attachment member 16 is inserted from the side of the first opening 15 a of the heat sink 15 and the light source attachment member 16 is pushed into the heat sink 15.
- the convex portion 16 b of the light source attachment member 16 can be fitted into the concave portion 15 c of the heat sink 15.
- the heat sink 15 and the light source attachment member 16 can be fixed to each other.
- the lamp 1 further includes a glove 17, a resin case 18, a resin cap 19, an insulating ring 20 and a fastener 21.
- the globe 17 is a hemispherical translucent cover for emitting the light emitted from the LED module 11 to the outside of the lamp.
- the LED module 11 is covered by the globe 17.
- the globe 17 is subjected to light diffusion processing such as ground glass processing in order to diffuse light emitted from the LED module 11.
- the opening side of the globe 17 has a narrowed shape, and the opening end of the globe 17 is disposed in contact with the upper surface of the light source attachment member 16.
- the globe 17 is fixed to the heat sink 15 by a heat-resistant silicone adhesive.
- the shape of the globe 17 is not limited to a hemispherical shape, and may be a spheroid or a nonspherical sphere.
- the material of the globe 17 is a glass material in the present embodiment, the material of the globe 17 is not limited to a glass material, and the glove 17 may be formed of a synthetic resin or the like.
- the resin case 18 is a case for housing the lighting circuit 13 and is a cylindrical first case portion 18a having substantially the same shape as the heat sink 15, and a cylindrical second case portion 18b having substantially the same shape as the base 12. It consists of
- the first case portion 18 a is disposed with a predetermined gap from the heat sink 15.
- a gap is provided on the outer peripheral surface of the first case portion 18 a and the surface facing the first case portion 18 a of the heat sink 15.
- the second case portion 18 b has an opening on the opposite side to the first case portion 18 a side.
- the outer peripheral surface of the second case portion 18 b is configured to be in contact with the inner peripheral surface of the mouthpiece 12.
- a screwing portion for screwing with the mouthpiece 12 is formed on the outer peripheral surface of the second case portion 18b, and the screwing portion makes contact with the mouthpiece 12.
- the resin case 18 can be manufactured by injection molding, whereby the first case portion 18a and the second case portion 18b are integrally formed.
- the resin cap 19 is attached to an opening on the light source attaching member 16 side of the first case portion 18 a of the resin case 18.
- the light source mounting member 16 side of the resin case 18 is sealed by a resin cap 19.
- the resin cap 19 has a substantially disc shape, and an annular projecting portion 19 a that protrudes in the thickness direction of the resin case is formed at the outer peripheral end on the inner surface side.
- a plurality of locking claws (not shown) for locking and holding the circuit board 13b are formed on the inner peripheral surface in the direction orthogonal to the protruding portion 19a.
- the protrusion 19 a is configured to be able to be fitted into the end of the opening of the first case portion 18 a of the resin case 18.
- the resin cap 19 can be molded using the same material as the resin case 18.
- the resin cap 19 is formed with a through hole 19 b for passing a lead wire for supplying power to the LED module 11.
- the insulating ring 20 secures the insulation between the base 12 and the heat sink 15, and is disposed between the base 12 and the heat sink 15.
- the inner peripheral surface of the insulating ring 20 is in contact with the outer peripheral surface of the second case portion 18 b of the resin case 18.
- the insulating ring 20 is held between the open end of the base 12 and the open end of the heat sink 15 by screwing the second case portion 18 b of the resin case 18 and the base 12.
- the insulating ring 20 is preferably formed of a high thermal conductivity resin.
- the heat sink 14 is configured by the heat sink 15 and the light source attachment member 16, and the convex portion 16 b of the light source attachment member 16 is in the concave portion 15 c of the heat sink 15 It is made to fit. Further, the concave portion 15 c of the heat sink 15 and the convex portion 16 b of the light source attachment member 16 include a portion where the outer outline of the vertical cross-sectional shape is a curve.
- the contact area between the heat sink 15 and the light source attachment member 16 can be increased, so the heat dissipation performance of the LED module 11 can be improved. Therefore, the temperature rise of the LED chip 11 b of the LED module 11 can be suppressed. Therefore, it is possible to prevent a drop in the luminous flux of the LED module and obtain a predetermined illuminance.
- the adhesion between the heat sink 15 and the light source attachment member 16 can be improved. Therefore, the holding performance of the heat sink 15 and the light source attachment member 16 can be improved.
- the heat dissipation body 14 is composed of a plurality, for example, in the present embodiment, since the heat sink 15 which is the peripheral side surface portion and the light source attachment member 16 which is the upper surface portion Since it can insert from the side with a large opening area (anti-base side) when inserting in the inside of 18), the assembly operativity of a lamp can be improved. Moreover, in the present embodiment, since the heat sink 14 includes the cylindrical heat sink 15 and the flat light source attachment member 16, the heat radiation design of the circuit elements of the lighting circuit 13 can be easily performed. That is, according to this configuration, the circuit board of the lighting circuit 13 can be arranged in the heat sink 15 either by the board vertical insertion method or the substrate horizontal insertion method. Thereby, when it is desired to contact the heat conducted from the circuit element to the circuit board with, for example, anywhere on the peripheral member of the circuit board, the range of design choice can be expanded.
- the improvement of the assembling workability of the lamp can improve the accuracy of the installation position of the lighting circuit 13. As a result, even when the resin case 18 is not present, the electrical insulation between the lighting circuit 13 and the radiator 14 can be secured, and the operation reliability of the lamp can be improved.
- the heat sink 15 and the light source mounting member 16 can be fixed by fitting the convex portion 16b of the light source mounting member 16 to the concave portion 15c of the heat sink 15, heat radiation is unnecessary without requiring an adhesive.
- the body support strength can be increased to fix the heat sink 15 and the light source attachment member 16.
- the configuration of the lamp 1 according to the present embodiment when the light source attachment member 16 is attached to the heat sink 15, there is no need to rotate the light source attachment member 16. That is, when attaching the light source attachment member 16 to the heat sink 15, the convex part 16b of the light source attachment member 16 is brought into contact with the inner surface of the heat sink 15, and the light source attachment member 16 is slid or rubbed inside the heat sink 15.
- the above attachment can be performed by pressing. Therefore, although the lead wire which connects the LED module 11 and the lighting circuit 13 is disposed through the light source attachment member 16, it can be accommodated inside the lamp without twisting the lead wire. No problems such as disconnection occur.
- the shape of the convex portion 16b of the light source attachment member 16 that is, the vertical cross-sectional shape of the convex portion 16b is arc-shaped at the time of mounting, frictional resistance between the light source attachment member 16 and the heat sink 15 can be reduced The fitting operation of the light source attachment member 16 and the heat sink 15 can be easily performed.
- FIG. 4 is an enlarged perspective view of a heat sink 14A in a lamp 1A according to a modification of the first embodiment of the present invention.
- the same components as those shown in FIG. 3 are denoted by the same reference numerals, and the description thereof will be omitted.
- the lamp 1A according to the modification of the first embodiment of the present invention shown in FIG. 4 is different from the lamp 1 according to the first embodiment of the present invention shown in FIG. 3 in the structure of the heat sink 15A constituting the heat sink 14A. It is.
- the other configuration is the same as the lamp 1 according to the first embodiment of the present invention.
- a part of the heat sink 15A on the light source mounting member 16 side is elastically deformed. Specifically, in the first opening 15a of the heat sink 15A, a notch 15dA cut out along the longitudinal direction from the opening end of the heat sink 15A is formed. In the present modification, the notch 15dA is cut out to the position of the recess 15c of the heat sink 15A.
- the heat sink 15A is a light source as the light source attachment member 16 is inserted into the heat sink 15A.
- the attachment member 16 applies a stress in a direction from the inside to the outside of the heat sink 15A.
- the heat sink 15A is formed with the notch 15dA, the light source attachment member 16 elastically deforms the first opening 15a side portion of the heat sink 15A. Therefore, the light source attachment member 16 can be easily attached to the heat sink 15A.
- the notch 15dA can also be used as a mark (alignment mark) for alignment between the heat sink 15A and the light source attachment member 16. Thereby, the assembly precision of the heat sink 15A and the light source attachment member 16 can be improved.
- the notch part 15dA was made into one in this modification, it does not restrict to this.
- a plurality of notch portions 15dA may be formed.
- the notch part 15dA was notched to the position of the recessed part 15c, it does not restrict to this.
- the notch 15dA may be formed so as to straddle the recess 15c.
- the notch 15dA may be formed so as not to reach the recess 15c.
- the notch portion 15dA may be appropriately formed in consideration of elastic deformation, strength, and the like of the light source attachment member 16 side portion of the heat sink 15A.
- FIG. 5 is an external perspective view of the heat sink 24 in the lamp 2 according to Embodiment 2 of the present invention.
- the difference between the lamp 2 according to Embodiment 2 of the present invention and the lamp 1 according to Embodiment 1 of the present invention is the structure of the radiator 24. Since the other configuration is the same as that of the lamp 1 according to the first embodiment of the present invention, the description including the entire configuration will be omitted. The same components are denoted by the same reference numerals.
- the radiator 24 is configured by the heat sink 25 and the light source attachment member 26.
- the heat sink 25 according to the present embodiment has the same basic configuration as the heat sink 15 of the first embodiment, and therefore, differences with the present embodiment will be mainly described.
- the basic configuration of the light source attaching member 26 according to the present embodiment is also the same as that of the light source attaching member 16 according to the first embodiment, and therefore, differences with the present embodiment will be mainly described.
- the heat sink 25 according to the present embodiment is a first heat radiation member according to the present invention, and in the same manner as the heat sink 15 according to the first embodiment, The recess 25c is formed.
- the recess 25c has the same configuration as the recess 15c.
- the heat sink 25 further includes a plurality of protrusions 25e.
- the plurality of projecting portions 25 e are formed on the inner surface of the end portion of the first opening 15 a of the heat sink 25 at predetermined intervals in the circumferential direction.
- Each protrusion 25 e is formed to protrude toward the inside of the heat sink 25 so as to straddle the recess 25 c.
- eight protrusions 25e are formed at equal intervals.
- the recess 25 c is not formed in the portion where the protrusion 25 e is formed.
- the light source attaching member 26 according to the present embodiment is a second heat radiation member according to the present invention, and similar to the light source attaching member 16 according to the first embodiment, the light source attaching member 26 is The convex part 26b is formed in the part contact
- the convex portion 26 b has the same configuration as the convex portion 16 b.
- a longitudinal groove 26 c is further formed in the convex portion 26 b constituting the side portion of the light source attaching member 26 according to the present embodiment.
- the vertical groove 26c is fitted with the protrusion 25e of the heat sink 15, and is recessed by the amount of protrusion of the protrusion 25e. Further, the vertical groove 26 c is formed by cutting out the convex portion 26 b along the thickness direction of the light source attachment member 26. In the present embodiment, eight vertical grooves 26c are formed corresponding to the protruding portions 25e.
- the inner diameter of the recess 25 c of the heat sink 25 and the outer diameter of the convex portion 16 b of the light source mounting member 26 both have a radius of 3 mm. Moreover, the thickness of the main plate of the light source attachment member 26 was 6 mm.
- the heat sink 25 and the light source attachment member 26 configured in this manner are the same as the lamp 1 according to the first embodiment of the present invention shown in FIGS. 2A and 2B.
- the light source mounting member 26 and the heat sink 25 are fixed by being fitted into the recess 25 c of the At this time, in the present embodiment, the light source attachment member 26 is fitted to the heat sink 25 such that the vertical groove 26 c of the light source attachment member 26 is fitted to the protrusion 25 e of the heat sink 25.
- the heat dissipating member 24 is configured by the heat sink 25 and the light source attachment member 26.
- the convex portion 26 b of the member 26 is fitted to the concave portion 25 c of the heat sink 25.
- the protrusion 25 e of the heat sink 25 and the vertical groove 26 c of the light source attachment member 26 are further It is made to fit.
- the curved shape of the outline of the recess 25 c of the heat sink 25 and the outer contour of the projection 26 b of the light source attachment 26 The curve shape of the line is made to coincide, and the recess 25 c of the heat sink 25 and the protrusion 26 b of the light source attachment member 26 are fitted.
- the contact portion between the heat sink 25 and the light source attachment member 26 is formed by the concavo-convex structure of the concave 25 c and the convex 26 b and the concavo-convex structure of the protrusion 25 e and the vertical groove 26 c. It is constituted by two concavo-convex fitting structure.
- the lamp 2 according to the present embodiment can further increase the contact area between the heat sink 25 and the light source attachment member 26 as compared to the lamp 1 according to the first embodiment of the present invention.
- Heat dissipation performance can be improved. Therefore, the temperature rise of the LED chip 11b of the LED module 11 can be further suppressed.
- the adhesion between the heat sink 25 and the light source attachment member 26 can be further improved. Therefore, the holding performance of the heat sink 25 and the light source attachment member 26 can be further improved.
- the lamp 2 according to the present embodiment also has a plurality of heat dissipating members 24, that is, the heat sink 25 as the peripheral side surface portion and the light source mounting member 26 as the upper surface portion.
- the resin case 18 accommodating the lighting circuit 13 into the inside of the radiator 24, the resin case 18 can be inserted from the side with the large opening area (the opposite side to the base), so that the assembly workability of the lamp can be improved.
- the improvement of the assembling workability of the lamp can improve the accuracy of the installation position of the lighting circuit 13. As a result, even when the resin case 18 is not present, the electrical insulation between the lighting circuit 13 and the heat radiating body 24 can be secured, so that the operation reliability of the lamp can be improved.
- the vertical groove 26 c of the light source attachment member 26 is fitted to the protrusion 25 e of the heat sink 25, and the light source attachment member 26 is attached to the heat sink 25. That is, the protrusion 25 e and the vertical groove 26 c also function as a guide mechanism when mounting the light source attachment member 26 on the heat sink 25 and a rotation stopper that prevents circumferential rotation of the light source attachment member 26. Thereby, the assembling workability of the heat sink 25 and the light source attachment member 26 can be further improved, and the alignment accuracy between the heat sink 25 and the light source attachment member 26 can be further improved.
- the protrusion 25e be formed at least from the recess 25c to the first opening 15a. Thereby, the protrusion 25e and the vertical groove 26c can be used as a guide mechanism.
- the heat sink 25 and the light source attachment member 26 can be fixed by the two concavo-convex structure, the heat sink support strength is further increased without requiring an adhesive, and thus the heat sink 25 and the light source attachment member 26 can be stably fixed.
- the vertical cross-sectional shape of the convex portion 26b of the light source attachment member 26 is an arc shape, the frictional resistance between the light source attachment member 26 and the heat sink 25 is the same as the lamp 1 according to the first embodiment of the present invention. Since the size can be reduced, the light source attachment member 26 can be easily attached to the heat sink 25.
- FIG. 6 is a cross-sectional view of a lamp 3 according to a third embodiment of the present invention.
- FIG. 7 is an enlarged perspective view of a heat sink in the lamp according to Embodiment 3 of the present invention.
- the lamp 3 according to the third embodiment of the present invention differs from the lamp 1 according to the first embodiment of the present invention in the structure of the heat dissipating member 34, in particular, the structure of the light source attachment member 36.
- the other configuration is the same as that of the lamp 1 according to the first embodiment of the present invention, and thus the description thereof is omitted.
- the same components are denoted by the same reference numerals.
- the heat dissipating member 34 is configured by the heat sink 15 and the light source attaching member 36.
- the heat sink 15 which concerns on this embodiment is a 1st thermal radiation member which concerns on this invention, Comprising: Since it is the same structure as the heat sink 15 of Embodiment 1, the description is abbreviate
- the light source attaching member 36 according to the present embodiment is a second heat radiating member according to the present invention, and the heat sink of the light source attaching member 36 is the same as the light source attaching member 16 according to the first embodiment.
- a protrusion 36 b is formed in a portion in contact with the portion 15.
- the convex portion 36 b is formed by processing a thin plate, and a space portion is formed inside the convex portion 36 b. Thereby, elastic force can be given to convex part 36b.
- the light source attachment member 36 further includes a skirt portion 36 d extending in the longitudinal direction along the inner circumferential shape of the heat sink 15.
- the skirt portion 36d is formed with a slit-like cut-out portion 36e cut in the longitudinal direction.
- the skirt portion 36d when an external force is applied to the skirt portion 36d, the skirt portion 36d is elastically deformed by the notch portion 36e, and as the skirt portion 36d is elastically deformed, the skirt portion 36d is continuous.
- the convex part 36b formed by this also elastically deforms.
- the light source attachment member 36 can be formed by deep drawing. Further, in the present embodiment, the outer diameter of the convex portion 36 b of the light source attaching member 36 is 3 mm. The height of the convex portion 36 b of the light source attachment member 36 was 6 mm. Moreover, the height of the skirt part 36d was 10 mm.
- the heat sink 15 and the light source attachment member 36 configured in this manner are the same as the lamp 1 according to the first embodiment of the present invention shown in FIGS. 2A and 2B.
- the light source mounting member 36 and the heat sink 15 are fixed as shown in FIG.
- the heat dissipating member 34 is configured by the heat sink 15 and the light source attachment member 36.
- the convex portion 36 b of the member 36 is fitted in the concave portion 15 c of the heat sink 15.
- the curved shape of the outline of the recess 15c of the heat sink 15 and the outer contour of the projection 36b of the light source attachment 36 is made to coincide, and the concave portion 15 c of the heat sink 15 and the convex portion 36 b of the light source attachment member 36 are fitted.
- the contact portion between the heat sink 15 and the light source attachment member 36 is configured by concavo-convex fitting.
- the contact area between the heat sink 15 and the light source attachment member 36 can be increased, and the adhesion between the heat sink 15 and the light source attachment member 36 can be improved.
- the contact area between the heat sink 15 and the light source attachment member 36 is significantly large. It can be expanded. Therefore, the lamp 3 according to the present embodiment can further improve the heat radiation performance of the LED module 11 as compared to the lamp 1 according to the first embodiment.
- the heat dissipating member 34 has a plurality of configurations according to the present embodiment, that is, the heat sink 15 which is the circumferential side portion and the light source attaching member 36 which is the upper surface portion. Since the resin case 18 accommodating the lighting circuit 13 can be inserted from the side with the large opening area (anti-base side) when inserting the resin case 18 containing the lighting circuit 13 into the inside of the radiator 34, the assembly workability of the lamp is improved. It can be done.
- the improvement of the assembling workability of the lamp can improve the accuracy of the installation position of the lighting circuit 13. As a result, even when the resin case 18 is not present, the electrical insulation between the lighting circuit 13 and the heat radiating body 14 can be secured, so that the operation reliability of the lamp can be improved.
- the skirt portion 36 d of the light source attachment member 36 receives stress from the inner surface of the heat sink 15 as the light source attachment member 36 is inserted into the heat sink 15.
- the skirt portion 36d is elastically deformed in the inward direction, and along with this, the convex portion 36b is also elastically deformed to form a bow and an outer diameter is reduced, so that the light source attachment member 36 can be easily inserted into the heat sink 15.
- the insertion proceeds further, and when the convex portion 36b is positioned in the concave portion 15c, the outer diameter of the light source attachment member 36 is restored by fitting the convex portion 36b into the concave portion 15c, and the fitting is completed.
- the light source attaching member 36 be held by the heat sink 15 by the restoring force of the convex portion 36 b and the skirt portion 36 d.
- the convex portion 36 b can be elastically deformed, the convex portion 36 b of the light source attachment member 36 can be easily fitted in the concave portion 15 c of the heat sink 15. Therefore, the installability of the light source attachment member 36 can be improved.
- the heat sink 15 and the light source attachment member 36 can be formed by increasing the heat sink support strength without requiring an adhesive for the lamp 3 according to the present embodiment. It can be fixed.
- the vertical cross-sectional shape of the convex portion 36 b of the light source attachment member 36 is arc-shaped, the frictional resistance between the light source attachment member 36 and the heat sink 15 is reduced as in the case of the lamp 1 according to the first embodiment.
- the light source attachment member 36 can be easily attached to the heat sink 15.
- three slit-shaped notches 36 e are formed in the skirt 36 d of the light source attachment member 36, but the number is not limited to three.
- the number of the notches 36 e may be one or two, or four or more.
- the notch 36e may be appropriately formed in consideration of elastic deformation, strength, and the like of the skirt 36d.
- the shape of the notch is not limited to the slit.
- a notch may be formed by further cutting the notch 36e along the circumferential direction of the skirt 36d.
- the second notch portion can be formed so as to be directed from the notch portions 36e on both sides to the notch portions 36e.
- the elastic force of the skirt portion 36d is increased, and the elastic deformation is facilitated. Therefore, the light source attachment member 36 can be further easily attached to the heat sink 15.
- FIG. 8 is an enlarged perspective view of a heat radiating body 34A in a lamp 3A according to a modification of the third embodiment of the present invention.
- the same components as those shown in FIG. 7 are denoted by the same reference numerals, and the description thereof will be omitted.
- a lamp 3A according to the modification of the third embodiment of the present invention shown in FIG. 8 is different from the lamp 3 according to the third embodiment of the present invention shown in FIG. Is the structure of The other configuration is the same as the lamp 3 according to the third embodiment of the present invention.
- a convex portion 36bA to be fitted to the concave portion 15c of the heat sink 15 is provided on the opening side of the skirt portion 36dA. It is that is, in the present modification, the convex portion 36bA of the light source attachment member 36A is formed apart from the surface to which the LED module is attached, and in the present embodiment, it is formed at a position opposite to the surface to which the LED module is attached. ing.
- the light source mounting member 36A includes a skirt portion 36dA as in the light source mounting member 36 shown in FIG. 7, and the skirt portion 36dA is cut in the longitudinal direction A slit-like cutaway portion 36eA is formed.
- the projection 36bA is also cut out by the cutout 36eA.
- the light source attachment member 36A configured as described above elastically deforms the skirt portion 36dA by the notch 36eA.
- the lamp 3A according to the modification of the third embodiment of the present invention thus configured can exhibit the same effect as the lamp 3 according to the third embodiment of the present invention described above.
- the vertical cross-sectional shape of the convex portion 36bA of the skirt portion 36dA in the light source attachment member 36A is arc-shaped.
- the light source attachment member 36A can be easily attached to the heat sink 15.
- the convex portion 36bA since the convex portion 36bA itself receives a stress, the convex portion 36bA is elastically deformed with the LED module mounting surface side portion of the skirt portion 36dA as a fulcrum. And the heat sink 15 can be easily attached.
- the number of notch portions 36eA is not limited to three.
- a second notch portion may be formed by further cutting away from the notch portion 36eA along the circumferential direction of the skirt portion 36d.
- FIG. 9A is a cross-sectional view of a lamp 4 according to a fourth embodiment of the present invention.
- FIG. 9B is an enlarged view of a region B surrounded by a broken line in FIG. 9A, and is an enlarged sectional view of a main part of the lamp 4 according to the fourth embodiment of the present invention.
- the difference between the lamp 4 according to Embodiment 4 of the present invention and the lamp 1 according to Embodiment 1 of the present invention is the structure of the heat sink 44.
- the other configuration is the same as that of the lamp 1 according to the first embodiment of the present invention, and thus the description thereof is omitted.
- the same components are denoted by the same reference numerals.
- the heat sink 44 is configured by the heat sink 45 and the light source attachment member 46.
- the heat sink 45 is a second heat radiating member according to the present invention, is a metal cylindrical heat radiating body having two openings in the vertical direction, and a first opening 45a constituting an opening on the glove 17 side; And a second opening 45 b constituting an opening on the 12 side.
- the diameter of the first opening 45a is larger than the diameter of the second opening 45b, and the heat sink 45 has a truncated cone shape as a whole.
- the axis (cylindrical axis) of the cylindrical body of the heat sink 45 is the same as the axis of the lamp, and the heat sink is a rotating body whose central axis is the axis of the lamp.
- the heat sink 45 is made of an aluminum alloy material.
- the surface of the heat sink 45 is subjected to an alumite treatment to improve the thermal emissivity.
- a convex portion 45 e is formed in a portion to which the light source attaching member 46 is attached.
- the convex portion 45 e is formed to protrude toward the cylindrical axis of the heat sink 45 which is the side surface portion side of the light source attachment member 46.
- the light source attaching member 46 is a first heat dissipating member according to the present invention, and is a holder made of a metal substrate on which the LED module 11 is disposed. Also in the present embodiment, the light source attachment member 46 is formed into a disk shape by aluminum die casting, and is attached to the convex portion 45 e of the first opening 45 a of the heat sink 45. As in the first embodiment, the light source mounting member 46 is formed with a recess 46 a for disposing the LED module 11.
- an edge which is a portion of the light source attachment member 46 that abuts the heat sink 45 is configured as a recess 46 f.
- the recess 46 f is formed to be recessed toward the inner peripheral surface of the heat sink 45.
- the lamp 4 according to the fourth embodiment of the present invention is the same as the lamp 1 according to the first embodiment of the present invention in that the heat dissipating member constituting the heat dissipating member 44 is fitted by the concavo-convex structure.
- the lamp 4 according to the fourth embodiment of the present invention is implemented in that the concave portion 46 f of the light source attachment member 46 (first heat radiation member) and the convex portion 45 e of the heat sink 45 (second heat radiation member) It differs from the lamp 1 according to the first aspect. That is, the concavo-convex structure of the lamp 4 according to the present embodiment and the lamp 1 according to the first embodiment is reversed.
- the outer outline of the vertical cross-sectional shape of the convex portion 45 e of the heat sink 45 is a substantially semicircular arc
- the concave portion 46 f of the light source attachment member 46 The outer contour line of the vertical cross-sectional shape is also a substantially semicircular arc.
- the curved shape of the outline of the convex portion 45 e of the heat sink 45 and the curved shape of the outline of the concave portion 46 f of the light source attachment member 46 coincide with each other at the contact portion between the heat sink 45 and the light source attachment member 46.
- the contact area between the heat sink 45 and the light source attachment member 46 can be increased, and the adhesion can be improved.
- FIG. 10 is an enlarged perspective view of a heat radiating body 44 in the lamp 4 according to Embodiment 4 of the present invention.
- the convex portion 45 e of the heat sink 45 is formed to protrude in a ring shape along the inner peripheral surface of the heat sink 45 on the side of the first opening 45 a. Also, the recess 46 f of the light source attachment member 46 is formed over the entire periphery of the side edge of the light source attachment member 46.
- the light source attachment member 46 is inserted from the side of the first opening 45 a of the heat sink 45 and pushed into the heat sink 45 as shown in FIG.
- the recess 46 f of the light source attachment member 46 can be fitted into the protrusion 45 e of the heat sink 45.
- the heat sink 45 and the light source attachment member 46 can be fixed to each other.
- the lamp 4 according to the fourth embodiment of the present invention thus configured can exhibit the same effect as the lamp 1 according to the first embodiment of the present invention described above.
- FIG. 11 is a schematic cross-sectional view of a lighting device 100 according to the present invention.
- a lighting device 100 according to the present invention is, for example, mounted on a ceiling 200 in a room and used, and includes a lamp 110 and a lighting fixture 120 as shown in FIG.
- the lamp 110 can use the lamp according to each of the above-described embodiments.
- the lighting fixture 120 is for turning off and lighting the lamp 110, and includes a fixture body 121 attached to the ceiling 200 and a lamp cover 122 covering the lamp 110.
- the appliance body 121 has a socket 121a into which the base 111 of the lamp 110 is screwed, and the lamp 110 is supplied with predetermined power via the socket 121a.
- the illuminating device 100 here is an example, and it does not matter if it is an illuminating device provided with the socket 121a for screwing together the base 111 of the lamp 110.
- the illuminating device 100 shown in FIG. 11 is equipped with one lamp, you may provide several, for example, 2 or more, lamps.
- both the first heat dissipating member and the second heat dissipating member are made of metal
- the present invention is not limited thereto.
- at least one or all of the heat dissipating members constituting the heat dissipating member may be made of a heat conductive resin having a large heat conductivity.
- both the concave portion of the first heat radiating member and the convex portion of the second heat radiating member are configured to include a portion where the outer outline of the vertical cross-sectional shape is curved.
- At least one of the concave portion of the first heat dissipating member and the convex portion of the second heat dissipating member may include a portion where the outer contour of the vertical cross-sectional shape is a curve.
- the shape of the curve in the convex portion of the second heat radiating member may not match the shape of the curve in the concave portion of the first heat radiating member, and the shape of the curve in the concave portion of the first heat radiating member and the second heat radiating member
- the shape of the curve at the convex portion may not be a substantially semicircular arc.
- the first heat dissipating member is a heat sink and the second heat dissipating member is a light source attaching member, it can be configured as shown in FIGS. 12A to 12D.
- 12A to 12D are enlarged cross-sectional views of a heat dissipating member in a lamp according to Modifications A to B of the present invention.
- the heat sink 55A may be the same as the heat sink 15 of the first embodiment, and may be configured to have a flat part at the tip of the convex part of the light source attachment member 56A. Further, as shown in FIG. 12B, the heat sink 55B is the same as the heat sink 15 according to the first embodiment, and the thickness of the light source attachment member 56B is reduced to make the sectional shape of the convex part a part of a semicircle. It can also be configured.
- the cross-sectional shape of the recess of the heat sink 55C may be rectangular, and the outline of the cross section of the protrusion of the light source mounting member 56C may be formed by a straight portion and a curved portion.
- the heat radiation effect is reduced compared to the first embodiment, since the heat sink 55C and the light source attachment member 56C can be brought into contact by the straight portions, adhesion and heat radiation performance can be improved more than before. Can.
- the frictional resistance at the time of mounting the light source attachment member 56C on the heat sink 55C can be reduced by the curved portion in the convex part of the light source attachment member 56C.
- the outer line in the cross section of the recess of the heat sink 55D is constituted by the straight portion and the curved portion, and the outer line in the cross section of the convex portion of the light source attachment member 56D is also by the straight portion and the curved portion. It can also be configured.
- the heat dissipation performance can be improved more than that of the first embodiment.
- adhesion can also be improved.
- the frictional resistance at the time of mounting the light source mounting member 56D on the heat sink 55D can be reduced by the curved section of the convex portion of the light source mounting member 56D.
- the edge of the light source attachment member is a protrusion having one protrusion, and a recess having one recess is formed on the inner surface of the heat sink, and these one protrusion and one recess are formed.
- a spiral narrow groove is formed at the edge of the light source attachment member to form a screw, and a spiral narrow groove is also formed on the inner surface of the heat sink to form a screw, The light source mounting member and the heat sink may be fitted together by screwing the parts.
- the edge of the light source attachment member is a convex portion having one protrusion
- the inner surface of the heat sink is formed with a screw portion having a spiral groove fitted to the one convex portion. It may be configured to be screwed to the heat sink.
- an LED LED chip
- a light emitting element such as a semiconductor laser and an organic EL (Electro Luminescence) may be used.
- ramp which concerns on this embodiment is effective especially in a small-sized bulb-type LED lamp. This is because a small LED lamp is difficult to design for heat dissipation due to its size and structure.
- the present invention can be realized by arbitrarily combining the components and functions in each embodiment within the scope not departing from the spirit of the present invention, or an embodiment obtained by applying various modifications to those skilled in the art.
- the present invention also includes the form
- the present invention is useful as an LED lamp, a lighting device or the like that uses a semiconductor light emitting element such as an LED as a light source.
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Abstract
Description
まず、本発明の実施の形態1に係るランプ1について、図1を参照しながら図2A及び図2Bを用いて説明する。図1は、本発明の実施の形態1に係るランプ1の分解斜視図である。図2Aは、本発明の実施の形態1に係るランプ1の断面図である。図2Bは、図2Aの破線で囲まれる領域Aの拡大図であり、本発明の実施の形態1に係るランプ1の要部拡大断面図である。
次に、本発明の実施の形態1の変形例に係るランプ1Aについて、図4を用いて説明する。図4は、本発明の実施の形態1の変形例に係るランプ1Aにおける放熱体14Aの拡大斜視図である。なお、図4において、図3に示す構成要素と同じ構成要素については、同じ符号を付しており、その説明は省略する。
次に、本発明の実施の形態2に係るランプ2について、図5を用いて説明する。図5は、本発明の実施の形態2に係るランプ2における放熱体24の外観斜視図である。
次に、本発明の実施の形態3に係るランプ3について、図6及び図7を用いて説明する。図6は、本発明の実施の形態3に係るランプ3の断面図である。図7は、本発明の実施の形態3に係るランプにおける放熱体の拡大斜視図である。
次に、本発明の実施の形態3の変形例に係るランプ3Aについて、図8を用いて説明する。図8は、本発明の実施の形態3の変形例に係るランプ3Aにおける放熱体34Aの拡大斜視図である。なお、図8において、図7に示す構成要素と同じ構成要素については、同じ符号を付しており、その説明は省略する。
次に、本発明の実施の形態4に係るランプ4について、図9A及び図9Bを用いて説明する。図9Aは、本発明の実施の形態4に係るランプ4の断面図である。図9Bは、図9Aの破線で囲まれる領域Bの拡大図であり、本発明の実施の形態4に係るランプ4の要部拡大断面図である。
11 LEDモジュール
11a セラミックス基板
11b LEDチップ
11c 封止樹脂
12、111、812 口金
13 点灯回路
13a 回路素子
13b 回路基板
14、14A、24、34、34A、44 放熱体
15、15A、25、45、55A、55B、55C、55D ヒートシンク
15a 第1開口部
15b 第2開口部
15c、25c 凹部
15dA 切り欠き部
16、26、36、36A、46、56A、56B、56C、56D 光源取り付け部材
16a、814a 凹部
16b、26b 凸部
17 グローブ
18 樹脂ケース
18a 第1ケース部
18b 第2ケース部
19 樹脂キャップ
19a 突出部
19b 貫通孔
20 絶縁リング
21 金具
25e 突出部
26c 縦溝
36b、36bA 凸部
36d、36dA スカート部
36e、36eA 切り欠き部
45a 第1開口部
45b 第2開口部
45e 凸部
46a、46f 凹部
100 照明装置
110 ランプ
120 点灯器具
121 器具本体
121a ソケット
122 ランプカバー
200 天井
80、90 LEDランプ
811 光源
813 点灯回路
814 外郭部材
815 周部
816 光源取り付け部
817 カバー
818 絶縁部材
912 口金部
915 放熱部
915a 放熱フィン
915b 固定筒
917 透光部
Claims (12)
- 半導体発光素子を有する光源と、前記光源に対して熱結合された放熱体と、前記放熱体に収容されるとともに前記光源を点灯させるための点灯回路と、前記点灯回路に電力を供給するための口金とを備え、
前記放熱体は、少なくとも前記点灯回路を覆う第1放熱部材と前記光源が配置された第2放熱部材とからなり、
前記第2放熱部材の端縁が前記第1放熱部材の凹部もしくは凸部に嵌合されている
ランプ。 - 前記第2放熱部材の前記端縁における垂直断面形状の外郭線と、前記第1放熱部材の前記凹部もしくは前記凸部における垂直断面形状の外郭線との少なくとも一方は、曲線となっている部分を含む
請求項1に記載のランプ。 - 前記第2放熱部材の前記端縁における前記曲線の形状と、前記第1放熱部材の前記凹部もしくは前記凸部における前記曲線の形状とは、いずれも略半円の円弧である
請求項2に記載のランプ。 - 前記第1放熱部材は、前記凹部を有し、
前記第2放熱部材の前記端縁は、前記凹部に嵌合する凸部である
請求項1~3のいずれか1項に記載のランプ。 - 前記第1放熱部材は筒体であり、前記第1放熱部材の前記凹部は、当該第1放熱部材の筒軸に向かって窪んでおり、
前記第2放熱部材の前記凸部は、前記第1放熱部材の側面部に向かって突出している
請求項4に記載のランプ。 - 前記第2放熱部材の前記凸部に縦溝が形成されており、
前記第1放熱部材に、前記縦溝に嵌合する突出部が形成されている
請求項4又は請求項5に記載のランプ。 - 前記第2放熱部材の一部が弾性変形するように構成される
請求項4~6のいずれか1項に記載のランプ。 - 前記第2放熱部材は、前記第1放熱部材の内周形状に沿って延びるスカート部を備え、
前記スカート部には切り欠き部が形成されている
請求項7に記載のランプ。 - 前記第1放熱部材は、前記凸部を有し、
前記第2放熱部材の前記端縁は、前記凸部に嵌合する凹部である
請求項1~3のいずれか1項に記載のランプ。 - 前記第1放熱部材の前記第2放熱部材側が弾性変形するように構成される
請求項4~9のいずれか1項に記載のランプ。 - 前記第1放熱部材の前記第2放熱部材側に切り欠き部が形成されている
請求項10に記載のランプ。 - 請求項1~11のいずれか1項に記載のランプを備えた照明装置。
Priority Applications (4)
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DE112011101515T DE112011101515T5 (de) | 2010-04-30 | 2011-02-17 | Lampe und Beleuchtungsvorrichtung |
CN2011800009585A CN102308143A (zh) | 2010-04-30 | 2011-02-17 | 灯以及照明装置 |
JP2011520272A JP4917697B2 (ja) | 2010-04-30 | 2011-02-17 | ランプ及び照明装置 |
US13/146,444 US20120057371A1 (en) | 2010-04-30 | 2011-02-17 | Lamp and lighting apparatus |
Applications Claiming Priority (2)
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JP2010-105891 | 2010-04-30 | ||
JP2010105891 | 2010-04-30 |
Publications (1)
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WO2011135766A1 true WO2011135766A1 (ja) | 2011-11-03 |
Family
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PCT/JP2011/000863 WO2011135766A1 (ja) | 2010-04-30 | 2011-02-17 | ランプ及び照明装置 |
Country Status (5)
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US (1) | US20120057371A1 (ja) |
JP (1) | JP4917697B2 (ja) |
CN (1) | CN102308143A (ja) |
DE (1) | DE112011101515T5 (ja) |
WO (1) | WO2011135766A1 (ja) |
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JP2013214465A (ja) * | 2012-04-04 | 2013-10-17 | Iris Ohyama Inc | Ledランプ |
JP2014146571A (ja) * | 2013-01-30 | 2014-08-14 | Panasonic Corp | ランプ |
JP2016167436A (ja) * | 2015-03-10 | 2016-09-15 | パナソニックIpマネジメント株式会社 | 照明用光源及び照明装置 |
JP5999391B2 (ja) * | 2012-12-13 | 2016-09-28 | パナソニックIpマネジメント株式会社 | 発光装置、照明用光源及び照明装置 |
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JP2014060070A (ja) * | 2012-09-18 | 2014-04-03 | Toshiba Lighting & Technology Corp | 照明装置 |
WO2014049506A1 (en) * | 2012-09-30 | 2014-04-03 | Vaish Higmanshu Rai | Bulb |
WO2014049507A1 (en) * | 2012-09-30 | 2014-04-03 | Himangshu Rai Vaish | Bulb |
WO2014049505A1 (en) * | 2012-09-30 | 2014-04-03 | Vaish Higmanshu Rai | Bulb |
DE102012222959B4 (de) * | 2012-12-12 | 2015-04-02 | Semikron Elektronik Gmbh & Co. Kg | Leistungsbauelementeinrichtung |
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CN104235748B (zh) * | 2013-06-19 | 2018-08-31 | 欧司朗有限公司 | 灯壳及其制造方法和包括该灯壳的照明装置 |
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JPWO2011135766A1 (ja) | 2013-07-18 |
JP4917697B2 (ja) | 2012-04-18 |
CN102308143A (zh) | 2012-01-04 |
US20120057371A1 (en) | 2012-03-08 |
DE112011101515T5 (de) | 2013-06-20 |
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