WO2011070854A1 - 照明装置 - Google Patents
照明装置 Download PDFInfo
- Publication number
- WO2011070854A1 WO2011070854A1 PCT/JP2010/068269 JP2010068269W WO2011070854A1 WO 2011070854 A1 WO2011070854 A1 WO 2011070854A1 JP 2010068269 W JP2010068269 W JP 2010068269W WO 2011070854 A1 WO2011070854 A1 WO 2011070854A1
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- WIPO (PCT)
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- cover
- heat
- light
- scattering
- film
- Prior art date
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- 239000012634 fragment Substances 0.000 claims abstract description 13
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- 230000002265 prevention Effects 0.000 claims description 25
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- 239000004945 silicone rubber Substances 0.000 claims description 12
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- 238000009792 diffusion process Methods 0.000 abstract description 14
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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
- F21V25/00—Safety devices structurally associated with lighting devices
- F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
-
- 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
-
- 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
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/508—Cooling arrangements characterised by the adaptation for cooling of specific components of electrical circuits
-
- 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
- F21K9/238—Arrangement or mounting of circuit elements integrated in the light source
-
- 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
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
- F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
- F21V23/006—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate being distinct from the light source holder
-
- 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
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
-
- 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 an illumination device including a light source and a translucent cover that transmits light emitted from the light source.
- An illumination device used for indoor and outdoor illumination includes a light source and a translucent cover that is provided in the light emission direction of the light source and transmits light.
- a light source particularly in the case of a lighting device using a light emitting diode (hereinafter referred to as LED) as a light source, a glass cover with little deterioration over time may be used because the light source has a long life.
- LED light emitting diode
- glass is easily damaged when subjected to an impact by dropping or the like. Therefore, conventionally, in an illuminating device using a member that may be damaged, such as glass, various measures for preventing the fragments from scattering when the member is damaged have been proposed (see, for example, Patent Document 1). ).
- a transparent rubber-like elastic body or a soft resin coating is formed on the outer surface and / or the inner surface of the glass lighting device.
- a light source with strong light directivity such as an LED
- a diffusing plate, a diffusing film, or the like that diffuses light in the light emitting direction of the light source is often provided.
- the present invention has been made in view of such circumstances, and provides an illuminating device having an anti-scattering film capable of preventing debris from being scattered and reducing light source glare when the cover is broken without reducing the luminous flux.
- the purpose is to do.
- An illuminating device includes a light source and a light-transmitting cover that transmits light emitted from the light source, and the scattering prevention film that prevents fragments from scattering when the cover is damaged
- the scattering prevention film includes a diffusion material that diffuses light.
- a light-transmitting cover that transmits light emitted from a light source is provided with a scattering prevention film that prevents fragments from scattering when the cover is damaged, and the scattering prevention film Has a diffusing material for diffusing light.
- the cover is provided with a scattering prevention film with a diffusing material, compared to the case where a member for preventing scattering of fragments when the cover is damaged and a member for reducing glare of the light source are provided on the cover separately. It is possible to prevent a decrease in luminous flux.
- the lighting device according to the present invention is characterized in that the anti-scattering film is provided on an inner surface of the cover.
- the anti-scattering film is provided on the inner surface of the cover, it is possible to reduce the adhesion of dirt to the anti-scattering film and the exfoliation of the anti-scattering film, and to prevent debris from scattering when the cover is damaged. In addition, the effect of reducing the glare of the light source can be maintained.
- the lighting device according to the present invention is characterized in that the anti-scattering film contains silicone rubber.
- the scattering prevention film contains silicone rubber.
- the anti-scattering film containing elastic silicone rubber absorbs the impact due to dropping or the like, so that the fragments of the cover can be prevented from scattering.
- silicone rubber is less likely to discolor due to aging, it can be used for a long time without replacing parts.
- the lighting device according to the present invention is characterized in that the light source is an LED.
- an LED is used as a light source. Since light from the LED, which is a light source with strong light directivity, is diffused by the diffusion material of the anti-scattering film, glare can be reduced.
- the present invention it is possible to prevent scattering of fragments when the cover is broken and to reduce glare of the light source without reducing the luminous flux.
- FIG. 1 is a schematic exploded perspective view of a lighting device according to Embodiment 1.
- FIG. 1 is a schematic longitudinal sectional view of a lighting device according to Embodiment 1.
- FIG. 3 is a schematic plan view of a main part of the lighting device according to Embodiment 1.
- 3 is a schematic partial enlarged cross-sectional view of a cover used in Embodiment 1.
- FIG. It is a figure which shows the example of arrangement
- FIG. 6 is a schematic plan view of a main part of a lighting device according to Embodiment 3.
- FIG. 1 is a schematic external view of a lighting apparatus 100 according to Embodiment 1 of the present invention.
- FIG. 2 is a schematic exploded perspective view of lighting apparatus 100 according to Embodiment 1.
- FIG. 3 is a schematic longitudinal sectional view of the illumination device 100 according to the first embodiment.
- FIG. 4 is a schematic plan view of a main part of lighting apparatus 100 according to Embodiment 1.
- the LED 1 in the figure is an LED as a light source.
- the LED 1 is, for example, a surface-mounted LED that includes an LED element, a sealing resin that seals the LED element, and phosphors are dispersed, and an input terminal and an output terminal.
- a plurality of LEDs 1 are mounted on one surface of a mounting board 11 having a disk shape.
- the mounting substrate 11 on which the LEDs 1, 1... Are mounted is fixed to the heat radiating plate 2 on the other surface which is the non-mounting side surface.
- the heat radiating plate 2 is made of a metal such as aluminum, and includes a disk-shaped fixing plate portion 21 on which the mounting substrate 11 is fixed to the one surface 21a.
- An attachment portion 22 to which a cover described later is attached is provided on the peripheral edge of the fixed plate portion 21 on the one surface 21a side.
- the attachment portion 22 is provided on the one surface 21 a side of the fixed plate portion 21, and is provided with an annular protrusion 22 a erected on the outer peripheral edge of the fixed plate portion 21, and is connected to the protrusion 22 a and is concentric with the fixed plate portion 21.
- an annular convex portion 22c provided in the same direction as the protrusion 22a.
- the projecting side surface of the convex portion 22c is inclined so that the projecting height increases from the inside toward the outside according to the shape of the cover.
- an engagement groove 23 with which a heat radiator described later is engaged is provided on the peripheral edge of the heat sink 2 on the side of the other surface 21b of the fixed plate portion 21, an engagement groove 23 with which a heat radiator described later is engaged is provided. Further, a plurality of screw holes 21c, 21c,... It is desirable that a heat conductive sheet or a heat conductive grease is interposed between the mounting substrate 11 and the heat radiating plate 2. This heat sink 2 is attached to the heat radiator 3 on the other surface 21b side.
- the heat radiator 3 is made of metal such as aluminum and includes a cylindrical heat radiating cylinder 31.
- the heat radiating cylinder 31 is gradually expanded in diameter from one end side in the longitudinal direction to the other end side, and a flange portion 32 is provided around the other end side.
- An annular engagement convex portion 32 a that engages with the engagement groove 23 of the heat radiating plate 2 is provided on the inner peripheral edge of one surface of the flange portion 32.
- An annular recess 32 b concentric with the heat radiating cylinder 31 is formed on the one surface of the flange portion 32.
- One end of the plurality of fins 33, 33 in the longitudinal direction is connected to the flange portion 32 of the radiator 3.
- the heat radiating cylinder 31 has a projecting portion 34 projecting radially inward from a part of the inner peripheral surface of the heat radiating cylinder 31.
- the projecting portion 34 is made of metal such as aluminum and is formed over an appropriate length along the longitudinal direction of the heat radiating cylinder 31.
- the cross-sectional shape of the projecting portion 34 is rectangular as shown in FIG.
- the projecting end surface 34a of the projecting portion 34 is formed on a plane facing the center line of the heat radiating cylinder 31 so as to be substantially parallel to a power circuit board of the power source section described later.
- the power supply unit is thermally connected to the radiator 3, and the projecting portion 34 functions as a heat transfer unit that transfers heat from the power supply unit to the radiator.
- the protruding portion 34 may be formed integrally with the heat radiating tube 31 or may be formed separately from the heat radiating tube 31 and fixed with an adhesive or the like.
- a plurality of boss portions 35 having screw holes 35a are provided on the inner side of the radiating tube 31 on the flange portion 32 side.
- the heat radiating plate 2 is attached to the heat radiating body 3 by fixing the heat radiating plate 2 with screws in a state in which the screw holes 21c, 21c..., 35a, 35a. .
- the mounting substrate 11 on which the LEDs 1, 1... Are mounted is fixed to the radiator 3 via the radiator plate 2.
- a waterproof packing is fitted in the recess 32b of the flange 32 of the radiator 3, so that the heat radiating plate 2 and the flange 32 can be brought into close contact with each other, and water droplets enter the inside. Can be prevented.
- a power supply unit to be described later is accommodated in the radiator 3.
- a translucent cover 4 is attached to the flange portion 32 of the radiator 3 so as to cover the light emitting direction side of the LEDs 1, 1.
- the cover 4 is made of milky white glass having a hemispherical shell shape.
- FIG. 5 is a schematic partial enlarged sectional view of the cover 4 used in the present invention.
- FIG. 6 is a diagram illustrating an arrangement example of the LEDs 1, 1.
- the inner surface 4a of the cover 4 is provided with a scattering prevention film 41 that prevents the fragments from scattering when the cover 4 is broken.
- the scattering prevention film 41 is formed by applying and solidifying a coating material formed by adding a diffusion material 41b that diffuses light to a resin film base material 41a containing silicone rubber.
- the diffusing material 41b preferably has, for example, a crystal structure, optical properties, a large refractive index, a small light absorption ability, and a high light scattering ability.
- the diffusion material for example, barium titanate, titanium oxide, aluminum oxide, silicon oxide, calcium carbonate, silicon dioxide or the like is used. Further, a phosphor may be added to the film substrate 41a in addition to the diffusion material 41b or instead of the diffusion material 41b.
- the film thickness of the scattering prevention film 41 is about 30 ( ⁇ m).
- silicone rubber is used as the film substrate 41a.
- the present invention is not limited to this, and the membrane base material 41a extends without breaking so that the fragments are not scattered when the cover 4 is damaged by an impact. It is only necessary that the material is made of a material having elasticity or ductility.
- the coating material which added and mixed the diffusing material 41b with the resin-made film base materials 41a containing silicone rubber as mentioned above. May be formed by coating the inner surface of the cover 4 and then solidifying it, and the inner surface of the cover 4 may be separately formed of the coating material that is the resin film base material 41a containing silicone rubber and the coating material containing the diffusion material 41b. It may be formed by solidifying after coating.
- a film layer made of a paint, which is a resin film base 41a containing silicone rubber, and a film layer made of a paint containing a diffusing material 41b may be formed so as to overlap each other.
- the cover 4 configured in this way is attached to the recess 22b of the heat sink 2 with an adhesive or the like at the periphery on the opening side.
- the light from the LEDs 1, 1... Arranged as shown in FIG. 6 is incident on the scattering prevention film 41 provided on the inner surface of the cover 4, and the incident light is a diffusion material in the scattering prevention film 41.
- the light is transmitted while being diffused by 41b and is emitted from the cover 4 to the outside.
- the light distribution from the LEDs 1, 1,... which are light sources with strong light directivity, can be expanded.
- the phosphor diffuses light and is excited by the light to emit light, so that the light distribution can be further expanded.
- a cap 6 is provided on the opposite side of the radiating tube 31 of the radiating body 3 from the flange 32 via a connecting body 5.
- the connecting body 5 has a bottomed cylindrical shape, and includes a base holding cylinder portion 51 that holds the base 6, and a connecting portion 52 that is connected to the base holding cylinder portion 51 and connected to the radiator 3. .
- the base holding part 51 has an opening for electric wires at the bottom, and the outer peripheral surface is threaded for screwing with the base 6.
- the base holding cylinder part 51 and the connecting part 52 are made of, for example, an electrically insulating material such as resin, and are integrally formed.
- the connecting body 5 is fixed by a screw in a state where the connecting portion 52 side is aligned with the screw hole aligned with the opposite side of the flange portion 32 of the heat dissipating cylinder 31 of the heat dissipating body 3. 3 is integrated.
- the base 6 has a cylindrical shape with a bottom, a one-pole terminal 61 in which a screw processing for screwing into a socket for a light bulb is applied to the cylindrical portion, and a projection provided on the bottom surface of the base 6
- the electrode terminal 62 is provided. These one-pole terminals 61 and other-pole terminals 62 are insulated.
- the outer shape of the cylindrical portion of the base 6 is formed in the same shape as the screw-type base of E17 or E26, for example.
- the base 6 is integrated with the connection body 5 by inserting the base holding portion 51 of the connection body 5 into the base 6 and screwing it together.
- a power supply unit for supplying power of a predetermined voltage and current to the LEDs 1, 1... 7.
- a holding body 8 for holding the power supply unit 7 in the cavity is accommodated.
- the power supply unit 7 includes a power supply circuit board 71 having a shape corresponding to the vertical cross-sectional shape of the cavity to be accommodated, and a plurality of circuit components mounted on the power supply circuit board 71.
- a heat generating component 72 which is a circuit component that generates a large amount of heat due to the supplied current, is mounted as compared with the circuit component 73 mounted on the other surface 71b.
- a bridge diode that performs full-wave rectification of an alternating current supplied from an external alternating current power source, a transformer that transforms the power supply voltage after rectification to a predetermined voltage, and a primary side and a secondary side of the transformer are connected.
- the power circuit board 71 for example, a glass epoxy board, a paper phenol board, or the like is used.
- the holding body 8 that holds the power supply unit 7 is made of, for example, an electrically insulating material such as resin, and is formed in a shape that can be inserted into the heat radiating cylinder 31.
- the holding body 8 is provided on the holding portions 81 and 82 for holding the power supply circuit board 71 of the power supply portion 7, and on the side of the heat radiating plate 2 and the base 6, and is a semi-annular shape having an outer shape slightly smaller than the inner diameter of the heat radiating tube 31.
- Frame 83, 84, and projections 85, 86 projecting from the frame 83 on the heat radiating plate 2 side toward the other surface 21b of the heat radiating plate 2.
- the sandwiching portions 81 and 82 include a contact piece that contacts the boss portion 35 of the heat radiating cylinder 31 and a facing piece that faces the corresponding contact piece with substantially the same interval as the plate thickness of the power supply circuit board 71.
- the power supply circuit board 71 is sandwiched between the contact piece and the opposing piece.
- the holding body 8 is inserted into the heat radiating cylinder 31 of the heat radiating body 3 from the frame 84 side, and the abutting pieces of the holding portions 81 and 82 are brought into contact with the boss portion 35 of the heat radiating cylinder 31.
- the holding body 8 is positioned in the circumferential direction of 31.
- the holding body 8 is provided on one end side (base 6 side) of the heat radiating cylinder 31 of the heat radiating body 3, and is provided on the support protrusion 36 that supports the holding body 8 on the frame 84 and the heat radiating plate 2 side.
- the holding body 8 is positioned with respect to the longitudinal direction of the radiating cylinder 31 by the projections 85 and 86.
- the power supply unit 7 By inserting and holding the holding body 8 inside the heat radiating body 3, the power supply unit 7 causes the power supply circuit board 71 to be substantially parallel to the projecting end surface 34 a of the projecting unit 34, and to the projecting end surface 34 a.
- the heat generating component 72 mounted on the one surface 71 a of the power circuit board 71 is brought close to the power supply circuit board 71 and attached to the inside of the connection body 5.
- the distance between one surface 71a of the power circuit board 71 and the projecting end surface 34a of the projecting portion 34 is about 5 (mm)
- one surface of the power circuit board 71 is
- the distance G between the circuit component mounted on 71a and the projecting end face 34a is about 3 (mm).
- a rectangular plate-shaped heat conduction sheet 9 is interposed between one surface 71a of the power circuit board 71 and the projecting end surface 34a.
- the size and arrangement of the heat conductive sheet 9 are appropriately determined according to the arrangement of the heat generating components 72.
- a heat good conductor having insulating properties is used, and for example, a low-hardness flame-retardant silicone rubber is used.
- the power supply unit 7 is electrically connected to the one-pole terminal 61 and the other-pole terminal 62 of the base 6 via an electric wire (not shown). Moreover, the power supply part 7 is electrically connected with LED1,1, ... by the connector via the electric wire (not shown). In addition, you may make it electrically connect not using an electric wire but using a pin plug.
- the lighting device 100 configured as described above is connected to an external AC power source by screwing the base 6 into a socket for a light bulb.
- an alternating current is supplied to the power supply unit 7 through the base 6.
- the power supply unit 7 supplies power of a predetermined voltage and current to the LEDs 1, 1,.
- the simple structure of providing the cover 4 with the anti-scattering film 41 to which the diffusing material 41b is added can widen the light distribution from the LEDs 1, 1... And reduce the glare.
- membrane 41 is provided in the cover 4, when the illuminating device 100 receives the impact by a fall etc., it can prevent that the fragment
- the scattering prevention film 41 on the inner surface 4a of the cover 4, it is possible to reduce adhesion of dust and the like scattered in the air to the scattering prevention film 41 and to prevent the scattering prevention film 41 from peeling off from the cover 4. Can do. Therefore, in the illumination device using the LED having a long life as the light source, the effects of preventing the cover from scattering and reducing the glare of the light source can be maintained for a long time.
- the glass cover 4 is less susceptible to discoloration due to aging compared to a resin cover such as polycarbonate. Therefore, as described above, by providing the glass cover 4 with the anti-scattering film 41 having the diffusing material, the cover scatters when the lighting device 100 with a small decrease in luminous flux due to discoloration is subjected to an impact due to dropping or the like. Can be used for a long period of time while maintaining a state in which glare is reduced. In addition, since the silicone rubber used for the scattering prevention film 41 does not easily cause discoloration due to deterioration over time, it is possible to prevent a decrease in luminous flux due to discoloration of the scattering prevention film itself for a long period of time.
- the LEDs 1, 1,... And the heat generating component 72 of the power supply unit 7 mainly generate heat as the LEDs 1, 1,. Heat from the LEDs 1, 1... Is transmitted to the radiator plate 2 and the radiator 3, and is dissipated from the radiator plate 2 and the radiator 3 to the air outside the lighting device 100. On the other hand, heat from the heat generating component 72 of the power supply unit 7 is mainly transmitted to the heat radiating body 3 and is dissipated from the heat radiating body 3 to the air outside the lighting device 100.
- a projecting portion 34 is formed by projecting radially inward from a part of the inner peripheral surface of the heat radiating cylinder 31 of the heat radiating body 3, and a bridge diode, a transformer, Heating components 72 such as diodes and ICs are concentrated on one surface 71a of the power circuit board 71, and the power supply unit 7 is installed inside the radiator 3 so that the heating component 72 is close to the projecting portion 34. is doing.
- the distance between the heat generating component 72 and the heat radiating body 3 can be reduced, so that the heat from the heat generating component 72 can be efficiently transmitted to the heat radiating body 3, and the transmitted heat can be transferred to the fins of the heat radiating body 3. 33, 33... Can be diffused to the outside air.
- the heat dissipation efficiency of the lighting device 100 can be improved.
- the heat conductive sheet 9 is interposed, heat can be radiated more efficiently.
- FIG. 7 is a schematic plan view of the main part of the illumination device 110 according to Embodiment 2 of the present invention.
- the projecting portion 34 is formed on the radiator tube 31 of the radiator 3 so as to project radially inward from a part of the radiator tube 31.
- a flat surface 37 a that is substantially parallel to the power circuit board 71 of the power source section 7 is provided, and a facing portion 37 that faces the power circuit board 71 is formed in the radiating cylinder 31.
- the facing portion 37 is made of a metal such as aluminum, and is formed over an appropriate length along the longitudinal direction of the heat radiating cylinder 31.
- the cross-sectional shape of the facing portion 37 is a half-moon shape as shown in FIG.
- the power supply unit 7 is thermally connected to the flat surface 37a of the facing portion 37, and the facing portion 37 functions as a heat transfer portion that transfers heat from the power supply portion to the radiator.
- the facing portion 37 may be integrally formed with the heat radiating cylinder 31 or may be formed separately from the heat radiating cylinder 31 and fixed with an adhesive or the like. Since the other configuration is the same as that of the first embodiment shown in FIG. 4, the same reference numerals as those in FIG. 4 are given to the corresponding structural members, and detailed description of the configuration is omitted.
- the schematic longitudinal cross-sectional shape of the illuminating device 110 is the same as the shape shown to the schematic longitudinal cross-sectional view of the illuminating device 100 shown in FIG.
- the power supply unit 7 is provided inside the heat radiator 3 so that the heat generating component 72 is brought close to the facing portion 37 formed on the heat radiator 3. And the space
- FIG. 8 is a schematic cross-sectional view of a radiator of illumination device 120 according to Embodiment 3 of the present invention.
- FIG. 9 is a schematic plan view of a main part of illumination device 120 according to Embodiment 3.
- the heat dissipating body 3 of the illumination device 110 of the second embodiment is devised so that heat absorption is good.
- the inner surface of the heat radiating body 3a including the flat surface 37a of the facing portion 37 is substantially evenly distributed in the circumferential direction over substantially the entire length along the longitudinal direction of the heat radiating body 3a.
- a plurality of grooves 39 having a U-shaped cross section are formed.
- the inner surface of the radiator 3a including the flat surface 37a of the facing portion 37 is painted with a black paint, so that heat from the power source can be efficiently received inside the radiator, It becomes possible to improve the heat dissipation efficiency.
- a paint having high infrared absorption efficiency is used.
- a paint containing carbon is preferably used.
- the same effect can be obtained by painting the protruding portion 34 or the facing portion 37 and the inner surface of the radiator 3a with a black paint.
- a plurality of grooves 39 are provided on the inner surface of the heat radiating cylinder 31 of the heat radiating body 3a.
- the area in which the internal air warmed by the heat generated by the power supply unit 7 comes into contact with the heat radiating cylinder 31 increases, so the heat of the power supply unit 7 can be efficiently transferred through the internal air.
- the heat radiation efficiency of the lighting device 120 can be improved.
- the inner surface of the heat radiating cylinder 31 is coated with a black paint, heat transfer by radiation is more efficiently performed, so that the heat dissipation of the lighting device 120 can be further improved. .
- the groove 39 having a U-shaped cross section is provided over substantially the entire length along the longitudinal direction of the radiator 3a.
- the shape of the groove 39 is not limited to this.
- the grooves may be provided so as to increase the surface area of the radiator 3a.
- a groove having a wedge-shaped cross-sectional shape may be provided, or a groove may be provided along the circumferential direction of the radiator 3a.
- the power source unit 7 has been described as the heat source accommodated in the cavity formed by the radiator plate, the radiator, and the coupling body of the lighting device.
- the light quantity and / or color of the LED is described.
- the dimming control unit also serves as a heat source.
- the configuration of the power supply circuit board 71 described in the above embodiment, that is, the control circuit board is installed so as to be close to a part of the heat radiating member, so that the heat from the control unit is obtained. Can be efficiently transmitted to the radiator.
- the cover 4 is made of glass.
- the present invention is not limited to this, and the cover 4 can be applied to a cover made of a material that is easily damaged such as hard resin.
- a resin such as a polycarbonate resin generally used as a cover
- the coating is applied and the anti-scattering film 41 is provided on the cover 4.
- the invention is not limited to this, and the scattering is performed by adhering a film-like anti-scattering film instead of the coating.
- a prevention film may be provided on the cover.
- the anti-scattering film 41 is provided on the inner surface 4a of the cover 4.
- the cover is prevented from being scattered and the glare is reduced with a simple configuration. be able to.
- the LED is used as the light source, but the present invention is not limited to this.
- the present invention can be suitably used in an illumination device including a light source with strong light directivity.
- the light bulb type lighting device attached to the socket for the light bulb has been described as an example.
- the lighting device is not limited to such a lighting device, and can be applied to other types of lighting devices.
- various modifications can be made within the scope of the matters described in the claims.
- the present invention can be applied to a lighting device including a light source and a translucent cover that transmits light emitted from the light source.
Landscapes
- 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)
Abstract
Description
(実施の形態1)
図1は、本発明の実施の形態1に係る照明装置100の模式的外観図である。図2は、実施の形態1に係る照明装置100の模式的分解斜視図である。図3は、実施の形態1に係る照明装置100の模式的縦断面図である。図4は、実施の形態1に係る照明装置100の要部の模式的平面図である。
図7は、本発明の実施の形態2に係る照明装置110の要部の模式的平面図である。実施の形態1の照明装置100においては、放熱体3の放熱筒31に、該放熱筒31の一部から径方向内向きに突設させた突設部34を形成しているが、本実施の形態においては、突設部34に代えて、電源部7の電源回路基板71に略平行な平面37aを有し、該電源回路基板71に対向する対向部37を放熱筒31に形成している。対向部37は、アルミニウム等の金属製であり、放熱筒31の長手方向に沿って適長に亘って形成してある。対向部37の横断面形状は、図7に示すように、半月状である。この対向部37の平面37aに電源部7が熱的に接続され、対向部37が電源部からの熱を放熱体に伝熱する伝熱部として機能する。なお、対向部37は、放熱筒31と一体成形してもよいし、放熱筒31と別体に形成して接着剤等により固定してもよい。その他の構成は、図4に示す実施の形態1と同様であるため、対応する構成部材に図4と同一の参照符号を付して、その構成の詳細な説明を省略する。また、照明装置110の模式的縦断面形状は、図3に示す照明装置100の模式的縦断面図に示す形状と同様である。
図8は、本発明の実施の形態3に係る照明装置120の放熱体の模式的断面図である。図9は、実施の形態3に係る照明装置120の要部の模式的平面図である。本実施の形態においては、実施の形態2の照明装置110の放熱体3に、熱吸収が良好になるように工夫を施してある。具体的には、照明装置120においては、対向部37の平面37aを含む放熱体3aの内面に、該放熱体3aの長手方向に沿って略全長に亘って、周方向に略等配をなして、横断面形状がコの字状の溝39を複数形成してある。これにより、放熱体3aの内部の空気に接触する面積が増加するから、電源部7の発熱に伴い温度が上昇した内部空気の熱を吸収する面積が増加することになる。
4 カバー
41 飛散防止膜
41b 拡散材
Claims (4)
- 光源と、該光源から出射された光を透過する透光性のカバーとを備え、該カバーが破損したときに破片が飛散することを防止する飛散防止膜が前記カバーに設けてある照明装置において、
前記飛散防止膜は、光を拡散する拡散材を有することを特徴とする照明装置。 - 前記飛散防止膜は前記カバーの内面に設けてあることを特徴とする請求項1に記載の照明装置。
- 前記飛散防止膜はシリコーンゴムを含有してなることを特徴とする請求項1又は2に記載の照明装置。
- 前記光源はLEDであることを特徴とする請求項1から3の何れか一つに記載の照明装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10835776.5A EP2511603B1 (en) | 2009-12-07 | 2010-10-18 | Lighting apparatus |
US13/514,126 US20120236573A1 (en) | 2009-12-07 | 2010-10-18 | Lighting apparatus |
CN2010800527433A CN102667321A (zh) | 2009-12-07 | 2010-10-18 | 照明装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-277804 | 2009-12-07 | ||
JP2009277804A JP4790058B2 (ja) | 2009-12-07 | 2009-12-07 | 照明装置 |
Publications (1)
Publication Number | Publication Date |
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WO2011070854A1 true WO2011070854A1 (ja) | 2011-06-16 |
Family
ID=44145407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2010/068269 WO2011070854A1 (ja) | 2009-12-07 | 2010-10-18 | 照明装置 |
Country Status (5)
Country | Link |
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US (1) | US20120236573A1 (ja) |
EP (1) | EP2511603B1 (ja) |
JP (1) | JP4790058B2 (ja) |
CN (1) | CN102667321A (ja) |
WO (1) | WO2011070854A1 (ja) |
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JP2013084440A (ja) * | 2011-10-07 | 2013-05-09 | Iwasaki Electric Co Ltd | ランプ |
WO2013089090A1 (ja) * | 2011-12-16 | 2013-06-20 | 大成プラス株式会社 | Led電球用放熱部及びその製造方法 |
WO2014026075A1 (en) * | 2012-08-10 | 2014-02-13 | Elumigen Llc | Light assembly with a heat dissipation layer |
CN106051620A (zh) * | 2016-08-09 | 2016-10-26 | 亚浦耳照明股份有限公司 | 一种混光扩散式光源 |
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JP5834744B2 (ja) * | 2011-10-07 | 2015-12-24 | 岩崎電気株式会社 | ランプ |
US9239159B2 (en) | 2011-12-16 | 2016-01-19 | Samsung Electronics Co., Ltd. | Heat-dissipating structure for lighting apparatus and lighting apparatus |
KR101206990B1 (ko) * | 2012-01-16 | 2012-11-30 | 네오마루 주식회사 | 이중 확산커버가 구비된 후배광형 엘이디 조명 장치 |
KR101310367B1 (ko) * | 2012-05-23 | 2013-09-23 | 주식회사 포스코엘이디 | 광 반도체 기반 조명장치 |
WO2013176355A1 (ko) * | 2012-05-23 | 2013-11-28 | 주식회사 포스코엘이디 | 광 반도체 조명장치 |
US9570661B2 (en) * | 2013-01-10 | 2017-02-14 | Cree, Inc. | Protective coating for LED lamp |
US9657922B2 (en) | 2013-03-15 | 2017-05-23 | Cree, Inc. | Electrically insulative coatings for LED lamp and elements |
CN104110591A (zh) * | 2013-04-22 | 2014-10-22 | 展晶科技(深圳)有限公司 | 发光二极管灯具 |
US9341317B2 (en) * | 2013-07-22 | 2016-05-17 | Dong Guan National State Lighting Co., Ltd. | LED bulb emitting light ray in a downward direction and manufacturing method thereof |
KR102301513B1 (ko) * | 2015-02-16 | 2021-09-15 | 쑤저우 레킨 세미컨덕터 컴퍼니 리미티드 | 발광소자, 이를 포함하는 발광소자 패키지, 및 이를 포함하는 조명시스템 |
GB201717950D0 (en) * | 2017-10-31 | 2017-12-13 | Rentokil Initial 1927 Plc | A light for an insect light trap, and an insect light trap |
EP3770495B1 (en) * | 2019-07-24 | 2023-08-23 | Ellego Powertec Oy | Led lamp |
CN112413419A (zh) * | 2020-12-04 | 2021-02-26 | 晋江万代好光电照明有限公司 | 一种灯具及其生产工艺 |
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- 2010-10-18 US US13/514,126 patent/US20120236573A1/en not_active Abandoned
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WO2013089090A1 (ja) * | 2011-12-16 | 2013-06-20 | 大成プラス株式会社 | Led電球用放熱部及びその製造方法 |
WO2014026075A1 (en) * | 2012-08-10 | 2014-02-13 | Elumigen Llc | Light assembly with a heat dissipation layer |
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CN106051620A (zh) * | 2016-08-09 | 2016-10-26 | 亚浦耳照明股份有限公司 | 一种混光扩散式光源 |
Also Published As
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JP4790058B2 (ja) | 2011-10-12 |
US20120236573A1 (en) | 2012-09-20 |
CN102667321A (zh) | 2012-09-12 |
EP2511603B1 (en) | 2015-12-16 |
EP2511603A4 (en) | 2013-07-24 |
EP2511603A1 (en) | 2012-10-17 |
JP2011119187A (ja) | 2011-06-16 |
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