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WO2015019682A1 - Dispositif d'éclairage - Google Patents

Dispositif d'éclairage Download PDF

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Publication number
WO2015019682A1
WO2015019682A1 PCT/JP2014/063912 JP2014063912W WO2015019682A1 WO 2015019682 A1 WO2015019682 A1 WO 2015019682A1 JP 2014063912 W JP2014063912 W JP 2014063912W WO 2015019682 A1 WO2015019682 A1 WO 2015019682A1
Authority
WO
WIPO (PCT)
Prior art keywords
globe
base
light source
connector
column
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/063912
Other languages
English (en)
Japanese (ja)
Inventor
光章 加藤
大野　博司
久野　勝美
弘康 近藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Niterra Materials Co Ltd
Original Assignee
Toshiba Corp
Toshiba Materials Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Toshiba Materials Co Ltd filed Critical Toshiba Corp
Priority to PCT/JP2014/071234 priority Critical patent/WO2015020230A1/fr
Priority to JP2015530993A priority patent/JPWO2015020230A1/ja
Priority to EP14834413.8A priority patent/EP3037714B1/fr
Publication of WO2015019682A1 publication Critical patent/WO2015019682A1/fr
Anticipated expiration legal-status Critical
Priority to JP2017131480A priority patent/JP6490753B2/ja
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • 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
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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
    • F21V29/506—Cooling arrangements characterised by the adaptation for cooling of specific components of globes, bowls or cover glasses
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0091—Reflectors for light sources using total internal reflection

Definitions

  • Embodiments of the present invention relate to a lighting device.
  • an illumination device using an LED arranges an LED that generates light on one surface of a base, and a spherical glove is provided so as to cover the LED so that light from the LED is emitted. Diffusing and emanating outside.
  • heat from the LED is transferred to the base and radiated from the other surface (heat radiating surface) of the base in contact with the outside air to the outside.
  • a illuminating device using an LED for example, a light distribution angle comparable to that of an incandescent light bulb, that is, a scale indicating the extent of the light emitted by the LED, and the total luminous flux, that is, the light emitted from the LED.
  • a scale that indicates the degree of brightness a scale that indicates transparency, that is, a ratio of the surface that transmits light of the lighting device, and a realization of the position of a light source such as an incandescent bulb.
  • the incandescent bulb emits light from the center of the globe where the filament is located, and the position of the light source is the center of the globe.
  • the area of the outer surface of the globe where light is finally emitted is increased, and the light irradiated forward from the light emitting surface of the LED is It is necessary to control the light distribution so that the light is emitted in all directions as much as possible.
  • This embodiment provides an illumination device that can increase the total luminous flux, expand the light distribution angle, improve the transparency, and can be arranged around the light source.
  • the lighting device has a glove having an opening at one end and a hollow inside, a plate-like base accommodated in the glove, and at least one disposed in the glove and disposed on the base.
  • a light source having an LED; a lens that is housed in the globe and covers a light emitting surface of the light source; and has a light transmission property; and is housed in the globe and provided on the opposite side of the light source and the lens with respect to the base.
  • a support that supports the base, a radiation layer that is provided on the surface of the support to radiate heat, a globe connector that is connected to the support at the one end of the globe, and a base connector that is connected to the globe connector And a base connected to the base connector for supplying power to the light source, and a wiring for electrically connecting the base and the light source.
  • Drawing 1 (a) and 1 (b) are figures showing an illuminating device by a 1st embodiment.
  • FIG. 1A is an external view of the lighting device 100
  • FIG. 1B is a cross-sectional view of the lighting device 100 cut along the line AA in FIG. 1A.
  • the lighting device 100 will be described with respect to an example in which the lighting device 100 is mounted on a socket provided on an indoor ceiling or the like, but is not limited thereto.
  • the lighting device 100 according to the first embodiment includes a globe 10 and a base 60.
  • the globe 10 emits light emitted from a light source described later contained in the globe 10 from the surface to the outside.
  • the base 60 serves as an electrical and mechanical connection portion when the lighting device 100 is fixed to a socket (not shown) by, for example, screwing or the like.
  • the lighting device 100 has a substantially symmetrical shape about the axis, that is, the AA line.
  • this axis is referred to as the central axis of the illumination device 100.
  • the base 60 is positioned on the upper side and the globe 10 is positioned on the lower side.
  • a socket not shown
  • light is emitted from a light source provided in the globe 10 and emitted to the outside through the surface of the globe 10, and the lighting device 100 functions as illumination.
  • the globe 10 has an opening at one end, and this opening has a diameter corresponding to the diameter of the opening of the base 60.
  • the glove 10 has a hollow inside, and the circumference of the glove 10 in a cross section perpendicular to the central axis of the glove 10 gradually increases as the glove 10 moves downward from the opening along the central axis. After the circumference reaches the maximum value, the shape gradually decreases.
  • the illumination device 100 includes a plate-like base 20 provided inside the globe 10, a substrate 41 disposed on the base 20, and a substrate 41.
  • the light source 40 provided above, the wiring 90 electrically connected to the light source 40, the lens 30 disposed on the light emitting surface side of the light source 40 and having light transparency, and provided on the base 20, the lens A lens connector 50 that fixes the base 30, a support 21 that supports the base 20, a radiation layer 80 provided on the surface of the support 21, a globe connector 22 that is connected to the support 21 and supports the globe 10, and a globe connector 22 And a base connector 23 for connecting the base to the base 60.
  • the base 20 is a member having a flat plate shape on which the substrate 41 is disposed, and conducts heat generated by the light source 40 inside and transmits the heat to the support column 21.
  • the light source 40 side of the base 20 is defined as the lower surface, and the surface opposite to the lower surface is defined as the upper surface.
  • the base 20 may have a substantially disk shape as shown in FIG.
  • a part of the base 20 is provided with a screw hole, threading, or hole for connection to the lens connector 50 and the column 21. Further, the base 20 is provided with a through hole for passing the wiring 90 from the upper surface to the lower surface.
  • a hole may be provided in the side surface of the support column 21 so that the wiring 90 reaches the substrate 41 side of the base 20.
  • the material excellent in heat conductivity such as an aluminum alloy and a copper alloy, for example is used.
  • the support column 21 is a member having a cavity inside, and conducts heat generated by the light source 40 inside and transmits part of the heat to the globe 10 and the base 60.
  • the support column 21 has a curved substantially cylindrical shape as shown in FIG.
  • pillar 21 the material excellent in heat conductivity, such as an aluminum alloy and a copper alloy, for example is used.
  • the circumferential length of the column 21 in a cross section perpendicular to the central axis of the column 21 changes as it reaches the base 60 side, and the circumferential length is equal to or less than the circumferential length of the base 20.
  • the perimeter means the perimeter of the outer periphery.
  • the inside of the support column 21 is filled with air, heat transfer may be promoted by enclosing a coolant such as water or fluorocarbon and operating as a heat pipe. A heat pipe may be inserted.
  • a radiation layer 80 having a high heat radiation property such as alumite formed by surface treatment or painting is provided on the surface of the support column 21. If a material having a low visible light absorptivity such as white paint is used for the radiation layer 80, the light loss on the surface of the support column 21 can be reduced.
  • the hollow side surface of the support column 21 is referred to as an inner surface, and the surface opposite to the inner surface is referred to as an outer surface (surface).
  • the globe connector 22 is a member that connects the support column 21, the globe 10, and the base connector 23. Part of the heat generated by the light source 40 is transmitted to the globe connector 22 via the support column 21 and is transmitted to the globe 10.
  • the globe connector 22 has a substantially cylindrical shape as shown in FIG.
  • the globe connector 22 is provided with a screw hole or the like that is integral with either the support 21 or the base connector 23 or connected to the support 21 or the base connector 23. Further, a convex portion or a groove for increasing the contact area with the globe 10 is provided.
  • a material having excellent thermal conductivity such as an aluminum alloy or a copper alloy is used.
  • an adhesive having heat resistance is used for connection with the globe 10, for example.
  • the surface of the globe connector 22 that comes into contact with air may be provided with a radiation layer having high heat radiation properties, such as anodized by surface treatment or coating. If a material with low visible light absorption such as white paint is used for the radiation layer, the loss of light on the surface of the globe connector 22 can be reduced.
  • the base connector 23 is a member that can be screwed to the base 60, and conducts heat generated by the light source 40 inside and transmits the heat to the base 60.
  • the base connector 23 has a cylindrical shape as shown in FIG. 1B, for example, and has openings at both ends. A part of the base connector 23 is provided with a screw hole, a thread, or a hole for connection to the globe connector 22 and the base 60.
  • the surface of the base connector 23 on the globe connector 22 side is defined as the bottom surface
  • the surface screwed with the base 60 is defined as the side surface.
  • the lens connector 50 is a member for fixing the lens 30 to the substrate 41.
  • the lens connector 50 has a substantially disk shape, for example, as shown in FIG. Further, a convex portion for pressing the substrate 41 against the base 20 may be provided in a part of the lens connector 50. This convex part is provided avoiding the light emitting surface of the light source 40 and an electrode part (not shown) on the substrate 41.
  • the lens connector 50 may be provided with a screw hole, threading, or a hole for connection to the base 20.
  • strength and heat resistance such as a polycarbonate, is used, for example.
  • an adhesive having heat resistance is used.
  • the lens connector 50 serves as a spacer around the substrate 41 and the light source 40 when the lens 30 is fixed. Further, when the lens 30 is made of resin and the base 20 is made of metal, the resin-type lens connector 50 is fixed to the base 20 with a screw, and the lens 30 and the lens connector 50 are bonded together with an adhesive. Since the gaps are bonded and the dissimilar materials are screwed, reliable bonding is possible. It is also possible to provide a screw hole directly in the lens 30 and screw it into the base 20 with a screw. However, in this case, light is reflected or absorbed by the screw holes and the screws, and the light distribution control by the lens 30 becomes difficult. In this way, by using the lens connector 50, it is possible to realize reliable fixing and easy light distribution control.
  • the surface on the light source 40 side of the lens connector 50 is defined as the lower surface, and the surface opposite to the lower surface is defined as the upper surface.
  • the lens 30 is a member that transmits light, such as glass or synthetic resin, and reflects, refracts, and diffuses light on each surface. Alternatively, particles that scatter light such as a scatterer may be sealed inside the lens 30 to have a diffusion function.
  • a cross-sectional view of a specific example of the lens 30 is shown in FIG.
  • the lens 30 has a diffusion part 30a, a total reflection part 30b, and a central part 30c.
  • the entire surface of the diffusion portion 30a is a diffusion surface. This diffusion surface is created by, for example, sandblasting. However, it is not limited to sand blasting, and may be formed using white coating or the like.
  • the diffusing portion 30a includes a cylindrical first portion 30a1 and a second portion 30a2 connected to the first portion 30a1 through a joint surface.
  • the total reflection part 30b is covered with the diffusion part 30a, and the entire surface is mirror-finished.
  • the central part 30c is provided at the center of the total reflection part 30b, and extends from the light source 40 side to the diffusion part 30a along the central axis. The light incident on the central portion 30c from the light source 40 goes straight as it is and is emitted to the outside through the diffusion portion 30a.
  • the second portion 30a2 of the diffusing portion 30a has a hemispherical outer surface centered on the center point O on the joint surface.
  • This outer surface is similar to the inner shape of the globe 10. That is, the distance between the inner surface of the globe 10 and the outer surface of the diffusing portion 30a is substantially constant.
  • the center point O is provided so as to coincide with the center of the globe 10. Thereby, the light from the light source 40 is emitted from the center point O, that is, the center of the globe.
  • the maximum diameters of the diffusing unit 30a and the total reflection unit 30b are equal to or smaller than the diameter of the opening of the globe 10. Thereby, the lens 30 can be inserted into the globe 10.
  • a material of the lens 30 it is preferable to use acrylic, polycarbonate, cycloolefin polymer, glass or the like having high light transmittance.
  • the light source 40 is a component in which one or a plurality of light emitting elements (not shown) such as LEDs are mounted on one surface of a plate-like substrate 41, and generates visible light such as white light.
  • the light-emitting element when a light-emitting element that generates blue-violet light having a wavelength of 450 nm is used, the light-emitting element is covered with a resin material containing a phosphor that absorbs blue-violet light and generates yellow light having a wavelength of about 560 nm.
  • the light source 40 generates white light.
  • the substrate 41 is made of a material having high electrical conductivity such as metal
  • a surface opposite to the surface on which the light source 40 is provided is a sheet (not shown) having electrical insulation and excellent thermal conductivity. It is preferably provided on the surface of the base 20 so as to be in contact with each other.
  • the contact thermal resistance between the light source 40 and the base 20 is small, and the light source 40 and the base 20 are electrically connected to each other. This is because it is preferable to have an insulating relationship.
  • substrate 41 is a raw material with low electrical conductivity, such as ceramics, the said insulating sheet is not necessarily required.
  • the air in the vicinity of the support column 21 is reduced in density due to heat radiation from the support column 21 and flows in a direction opposite to the direction of gravity. Moreover, the air in the vicinity of the globe 10 is absorbed by the low-temperature globe 10, increases in density, and flows in the forward direction (the same direction) with respect to gravity.
  • the light source 40 can be efficiently cooled by a cycle of heat radiation from the support column 21 and heat radiation to the globe 10 by the circulation flow.
  • a power supply circuit (not shown) that supplies power to the light source 40 may be provided inside the base 60, the base connector 23, and the column 21.
  • the power supply circuit receives an AC voltage (for example, 100 V) and converts it to a DC voltage, and then applies the DC voltage to the light source 40 through the wiring 90. In that case, electric power can be supplied to the light source 40 without using an external power source.
  • FIG. 3 is a diagram for explaining the shape of the column 21.
  • FIG. 4 is a diagram for explaining natural convection in the globe.
  • any of the base 60, the base connector 23, and the column 21 A constant current is supplied to the light source 40 via a power supply circuit (not shown) included in the crab or an external power supply. Thereby, the light source 40 emits light.
  • the function of the lens 30 will be described with reference to FIG.
  • the main component of the light emitted from the light source 40 is totally reflected by the upper surface (recessed surface) of the total reflection part 30b, and is emitted once from the cylindrical side surface of the total reflection part 30b. Further, the light enters the diffusion portion 30a, and is diffused and transmitted through the diffusion portion 30a. Thereby, light is emitted in the lateral direction and obliquely upward in FIG. 2 from the rear side, that is, the emission direction of the light source 40.
  • the light emitted from the light source 40 is finally made wider by the light diffusing unit 30a and diffused and transmitted with a uniform light distribution.
  • the diffusing portion 30a has an outer surface in which the shape of the inner surface of the globe 10 is similar, the distance between the outer surface and the globe 10 is substantially the same throughout. Thereby, the light distribution characteristic of the light emitted from the surface of the diffusion portion 30 a is projected onto the globe 10. That is, if the light distribution is uniform, there is an effect that the globe 10 appears to shine uniformly.
  • the maximum diameter of the diffusing portion 30a and the total reflection portion 30b is equal to or smaller than the diameter of the opening of the globe 10. Thereby, the lenses 30a and 30b can be inserted into the globe 10. On the other hand, when the maximum diameter of the lenses 30a and 30b is equal to or larger than the diameter of the opening of the globe 10, processing such as dividing the globe 10 is required. This has the effect of reducing the processing process load.
  • the light source 40 generates heat as it emits light. This heat is transmitted from the light source 40 to the substrate 41. Subsequently, the inside of the substrate 41 is transferred to the base 20. The heat transmitted to the base is transmitted to the support 21 through the base 20. A part of the heat transferred to the column 21 is transferred to the globe 10 by convection from the surface of the column 21 and heat radiation, and the other part is transferred to the globe connector 22 by heat conduction. A part of the heat transmitted to the globe connector 22 is transmitted to the globe 10, and the other part is transmitted to the base connector 23. The heat transmitted to the base connector 23 is transmitted to the base 60 through the base connector 23.
  • the base connector 23 and the base 60 are thermally connected to each other by screwing such as grease, a sheet, a tape, etc., which are excellent in thermal conductivity, and screws, and efficiently transfer heat. be able to.
  • a radiation layer 80 is provided on the surface of the support column 21 in order to promote heat dissipation by radiation from the support column 21 to the globe 10.
  • the radiation layer 80 is formed by alumite formed by surface treatment or painting. If a material having a low visible light absorptivity such as white paint is used for the radiation layer 80, the loss of light on the column surface can be reduced.
  • the end of the globe connector 22 is provided with a projection or groove for increasing the connection surface with the globe 10.
  • the globe connector 22 and the globe 10 are fixed with an adhesive having high heat resistance.
  • a radiation layer may be provided on the surface of the globe connector 22 that contacts the air.
  • the radiation layer is formed by alumite formed by surface treatment or painting. If a material with low visible light absorption such as white paint is used for the radiation layer, the loss of light on the surface of the globe connector can be reduced.
  • the surfaces of the support column 21 and the globe 10 are flat, the surface area of the support column 21 is A i , the length of the support column 21 is l g , the radius of the globe connector 22 is r p , the average radius of the base 20 is r b , and the support column 21.
  • the thermal resistance from the junction of the light source 40 to the environment via the base 60 is R lc
  • the thermal resistance from the surface in contact with the outside air of the glove connector to the environment is R gc
  • the heat from the junction of the light source 40 to the surface of the column 21 When resistance is R lp , thermal resistance from the surface of the globe 10 to the environment is R ga , and thermal resistance due to convection and radiation between the column 21 and the globe 10 is R a (r i ), R bulb including r i ( Rimin ) satisfies the following expression (3).
  • the average emissivity of the support 21 surface epsilon i, the average emissivity epsilon o of the globe, and the time, R r (r i) containing r i satisfies the following equation (6).
  • the globe 10 has been described as an example of a configuration that covers substantially the entire surface of the lighting device 100 other than the base 60.
  • the globe 10 is configured to cover only a part using a metal casing. Good.
  • heat can be directly radiated from the surface of a metal housing (not shown).
  • the heat exhausted from the support column 21 warms the air inside the globe, and as shown by the streamline 71 in FIG. 4, the warmed air is naturally convected along the surface of the support column 21 in the opposite direction of gravity. To rise.
  • the air reaching the upper end of the support column 21 is gradually cooled on the inner surface of the globe 10 and descends in the direction of gravity. Due to the air flow, heat transfer from the support column 21 to the globe 10 is promoted, and the lighting device 100 is further cooled.
  • the temperature of the flowing air gradually increases as the air flows upward along the periphery of the support column 21. That is, in the vicinity of the surface of the column 21, the temperature of the air near the lower end of the column 21 is the lowest, and the temperature of the air rises as it approaches the upper end.
  • the shape of the substantially cylindrical portion of the support column 21 is curved along the inner surface of the globe 10 and the space between the support column 21 and the globe 10 is widened, thereby promoting convection, that is, suppressing fluid resistance.
  • heat dissipation from the support column 21 to the globe 10 can be promoted.
  • the circumferential length in a cross section perpendicular to the central axis of the support column 21 is gradually reduced as the distance from the base 20 increases. Therefore, it becomes possible to reduce the surface area of the support column 21 and the cross-sectional area perpendicular to the central axis corresponding to the amount of heat that gradually decreases due to heat dissipation from the surface of the support column 21, while maintaining the heat dissipation performance of the support column 21. Weight can be reduced.
  • the column 21 has a cavity, and has openings at only one end on the base 60 side or both ends including the end on the light source 41 side.
  • the wiring 90 that is electrically connected to the LED 40 can be contained up to the base 60, and the appearance is improved, and at the same time, the possibility of unintentional play of the wiring and blocking light is reduced. be able to.
  • the lens connector 50 is screwed with the base 20 with a screw or the like, and the lens 30 is fixed with an adhesive or the like. Then, a gap is provided between the lens 30 and the light source 40 as shown in FIG.
  • a gap between the lens 30 and the light source 40 it is possible to avoid the influence due to the difference in coefficient of thermal expansion between the light source 40 and the lens 30. Further, the lens 30 can be moved away from the light source 40 that is at a high temperature, that is, the temperature of the lens 30 can be made equal to or lower than the temperature of the light source 40.
  • the wiring 90 may be directly connected to the base, or one of them may be connected to the base 20. By connecting the wiring 90 to the base 20, the amount of wiring can be reduced and the appearance can be improved. In this case, means for electrically connecting the support column 21 and the substrate 41, such as making the base 20, the globe connector 22, and the base connector 23 conductive parts, is required.
  • the base 20, the support column 21, the globe connector 22, and the base connector 23 are separate components, but some or all of them may be integrated components. In this case, it is difficult to manufacture parts. However, it is possible to remove the contact thermal resistance at the joint between the components, and the heat dissipation performance can be further improved.
  • the base connector 60 has electrical conductivity.
  • the base connector may be made of a material having high electrical insulation (PBT (Polybutylene terephthalate), polycarbonate, PEEK (Polyetheretherketone, etc.))
  • a layer having high electrical insulation may be formed on the surface.
  • an electric circuit not shown
  • both the positive electrode and the negative electrode of the wiring 90 are connected to the electric circuit.
  • the wiring 90 is directly connected to the base when there is no electric circuit.
  • the power supply circuit is disposed outside the lighting device 100, but the power supply circuit may be housed inside the base 60, the base connector 23, and the support column 21.
  • the support column 21 is provided in the globe 10, it is possible to efficiently dissipate heat and to improve the heat dissipation performance of the lighting device 100.
  • the illumination device of the second embodiment is shown in FIG.
  • the illumination device 100A according to the second embodiment has a configuration in which a light guide column 31 is used instead of the lens 30 in the illumination device 100 according to the first embodiment shown in FIGS. 1 (a) and 1 (b). Yes.
  • the light guide column 31 is provided with a scatterer 32 therein.
  • the scatterer 32 is, for example, sealed with white particles.
  • a cavity may be provided in the light guide column 31, and the inner surface thereof may be roughened by sandblasting.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)

Abstract

L'invention fournit un dispositif d'éclairage permettant d'améliorer le rendement normalisé et les propriétés de dissipation de chaleur. Ce dispositif d'éclairage est équipé : d'une ampoule qui possède une ouverture à une extrémité, et dont la partie interne est vide ; d'une base de forme plate admise à l'intérieur de ladite ampoule ; d'une source lumineuse admise à l'intérieur de ladite ampoule, disposée sur ladite base, et possédant au moins une DEL ; d'une lentille admise à l'intérieur de ladite ampoule, recouvrant une face luminescente de ladite source lumineuse, et possédant une perméabilité à la lumière ; d'une colonne de support admise à l'intérieur de ladite ampoule, et agencée côté opposé à ladite source lumineuse et à ladite lentille par rapport à ladite base qu'elle supporte ; d'une couche de radiation agencée à la surface de ladite colonne de support, et effectuant une radiation de chaleur ; d'un connecteur d'ampoule qui est connecté à ladite colonne de support à ladite extrémité de ladite ampoule ; d'un connecteur de douille connecté audit connecteur d'ampoule ; d'une douille connectée audit connecteur de douille, et destinée à alimenter ladite source lumineuse en énergie ; et d'un câble connectant électriquement ladite douille et ladite source lumineuse.
PCT/JP2014/063912 2013-08-09 2014-05-27 Dispositif d'éclairage Ceased WO2015019682A1 (fr)

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EP3037714A4 (fr) 2017-02-15
WO2015020230A1 (fr) 2015-02-12
EP3037714B1 (fr) 2020-01-01
EP3037714A1 (fr) 2016-06-29
JP6490753B2 (ja) 2019-03-27
JPWO2015020230A1 (ja) 2017-03-02

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