WO2010140112A1 - Appareil d'éclairage - Google Patents

Appareil d'éclairage Download PDF

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Publication number
WO2010140112A1
WO2010140112A1 PCT/IB2010/052430 IB2010052430W WO2010140112A1 WO 2010140112 A1 WO2010140112 A1 WO 2010140112A1 IB 2010052430 W IB2010052430 W IB 2010052430W WO 2010140112 A1 WO2010140112 A1 WO 2010140112A1
Authority
WO
WIPO (PCT)
Prior art keywords
radiation source
illumination apparatus
light tube
phosphor
regions
Prior art date
Application number
PCT/IB2010/052430
Other languages
English (en)
Inventor
Kun-Wah Yip
Di LOU
Xiaoyan Zhu
Original Assignee
Koninklijke Philips Electronics N.V.
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 Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Publication of WO2010140112A1 publication Critical patent/WO2010140112A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/002—Table lamps, e.g. for ambient lighting
    • F21S6/003—Table lamps, e.g. for ambient lighting for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • F21V9/45—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity by adjustment of photoluminescent elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/033—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • 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 illumination apparatuses. More particularly, the present invention relates to an illumination apparatus capable of generating light of different color temperatures.
  • HCT high color temperature
  • LCDT lamp of low color temperature
  • Reading under HCT light can protect the reader's eyes and is also helpful to keep the reader alert.
  • continuous reading under HCT light can biologically suppress people's desire to sleep and leads to insomnia.
  • Reading under LCT light near sleeping time enables the reader to gradually acquire a feeling of sleepiness while the light still provides a sufficient light level for reading.
  • continuous reading under LCT light cannot introduce a sufficient alertness level for the reader and leads to a low reading efficiency.
  • the present invention provides an illumination apparatus capable of generating light of different color temperatures.
  • White light is the mixture of light of different colors.
  • the phosphor-conversion white light can be achieved by the following approaches: 1) the UV light excites red, green and blue phosphors, and white light being a mixture of red, green and blue light results; 2) the blue light excites yttrium aluminum garnet (YAG) phosphor and yellow light results, then the yellow light mixes with the blue light which passes through the YAG phosphor and is not absorbed, thus two-wavelength-type white light is generated.
  • YAG yttrium aluminum garnet
  • white light of different color temperatures can be achieved by adjusting the proportions of the red, green and blue phosphors.
  • white light of different color temperatures can be achieved by adjusting the proportions of the components of the YGA phosphor.
  • an illumination apparatus comprising a radiation source and a carrier coated with at least two kinds of phosphor, wherein said at least two kinds of phosphor are respectively coated on at least two regions of said carrier, and the irradiation region irradiated by said radiation source on said carrier switches between said at least two regions of said carrier.
  • the illumination apparatus can generate light of different color temperatures.
  • said carrier is a light tube
  • said at least two kinds of phosphor are respectively coated on at least two regions of the inner side of said light tube
  • said radiation source is located inside said light tube, wherein the irradiation region, irradiated by said radiation source, on said inner side of said light tube switches between said at least two regions of said inner side of said light tube.
  • a shield is arranged between said radiation source and said light tube and configured to prevent said radiation source from irradiating other regions when said radiation source irradiates one region of said at least two regions of said inner side of said light tube.
  • said shield is a reflector
  • the reflecting surface facing the radiation source prevents the radiation source from irradiating other regions and reflects the radiation to said one region, which is beneficial to promoting the light generation efficiency.
  • said illumination apparatus is a desk lamp, comprising a lamp shade, a lamp base and a lamp post, wherein one end of said lamp post is connected with said lamp shade and the other end is connected with said lamp base, and said light tube is located inside said lamp shade.
  • the desk lamp according to an embodiment of the illumination apparatus provided in the present invention can generate at least two kinds of light of different color temperatures.
  • the reader can choose the color temperature of the reading light according to his/her personal preference. If the reader needs to concentrate on reading, then the desk lamp can be adjusted to generate HCT light. If the reader just wants to do some leisurely reading before going to sleep, then the desk lamp can be adjusted to generate LCT light.
  • said carrier comprises at least two sheets, said at least two kinds of phosphor being respectively coated on said at least two sheets, and one region of at least two regions of said carrier corresponding to one sheet, wherein said irradiation region of said radiation source switches between said at least two sheets.
  • said carrier is a sheet and said at least two kinds of phosphor are respectively coated on at least two regions of said sheet, wherein the irradiation region, irradiated by said radiation source, on said sheet switches between said at least two regions of said sheet.
  • said illumination apparatus is a desk lamp, comprising a lamp shade, a lamp base and a lamp post, one end of said lamp post being connected with said lamp shade and the other being connected with said lamp base, wherein a slit is arranged on said lamp shade to accommodate said sheets, and said radiation source is located inside said lamp shade and above said sheets.
  • FIGl illustrates a schematic diagram of an illumination apparatus 10 according to embodiments of the present invention
  • FIG.2 illustrates an embodiment of the illumination apparatus 10 in FIGl
  • FIG3 illustrates an example of the illumination apparatus 10 in FIG2
  • FIG4 illustrates another embodiment of the illumination apparatus 10 in FIGl
  • FIG5 illustrates an example of the illumination apparatus 10 in FIG4
  • FIGl illustrates a schematic diagram of an illumination apparatus 10 according to embodiments of the present invention.
  • the illumination apparatus 10 comprises a radiation source 11 and a carrier 12.
  • the carrier 12 is coated with two kinds of phosphor, denoted by ⁇ "and respectively, and the two kinds of phosphor are respectively coated on two regions of the carrier 12.
  • the carrier 12 is coated with two kinds of phosphor and the two kinds of phosphor are coated on two regions of the carrier 12 respectively. It will be understood by one of ordinary skill in the art that, in practical applications, the carrier 12 can be coated with at least two kinds of phosphor and the at least two kinds of phosphor can be coated on at least two regions of the carrier 12 respectively.
  • the irradiation region, irradiated by the radiation source 11, on the carrier 12 can switch between the two regions coated with phosphor.
  • the irradiation angle of the radiation source 11 For example, by changing the irradiation angle of the radiation source 11, the irradiation
  • 77 ⁇ region on the carrier 12 can be switched from the region denoted by "tzzl" to the region denoted
  • a shield (not shown in FIGl) can be arranged between the carrier 12 and the radiation source 11. By moving the shield, the irradiation region on the carrier 12 can be switched from the region denoted by ⁇ to the region denoted by or from the region
  • the irradiation region, irradiated by the radiation source 11, on the carrier 12 can switch between the two regions of the carrier 12.
  • the irradiation region, irradiated by the radiation source 11, on the carrier 12 can switch between the two regions of the carrier 12 by moving the carrier 12 so as to change its relative position with respect to the radiation source 11.
  • the radiation source 11 in FIGl comprises, but is not limited to, a UV radiation source and a blue light radiation source.
  • the UV radiation source can comprise a gas discharge UV light tube and a UV light emitting diode, etc, and the blue light radiation source can comprise a blue light emitting diode, etc.
  • the radiation source 11 is a UV radiation source. It is to be understood by one of ordinary skill in the art that the mechanism also applies to the condition when the radiation source 11 is a blue light radiation source.
  • the two kinds of phosphor coated on the carrier 12 are both made up of red, green and blue phosphors. It is to be understood by one of ordinary skill in the art that by adjusting the proportions of the red, green and blue phosphors and making the UV radiation source irradiate mixtures of different proportions of red, green and blue phosphors, light of different color temperatures can be achieved.
  • the two kinds of phosphor coated on the carrier 12 in FIGl can be chosen from mixtures of different proportions of red, green and blue phosphors.
  • the irradiation region, irradiated by the radiation source 11, on the carrier 12 switches from one region coated with phosphor to the other region, the light generated by the illumination apparatus 10 switches from light of one color temperature to light of the other color temperature.
  • one kind of phosphor coated on the carrier 12 is configured to generate HCT light and the other is configured to generate LCT light.
  • the manner of coating is not limited to the manner of coating shown in FIGl. It is to be understood by one of ordinary skill in the art that any manner of coating that enables switching of the irradiation region, irradiated by radiation source 11, on the carrier 12 between the two kinds of phosphor coated on the carrier 12 will fall into the scope of the present invention.
  • the two kinds of phosphor coated on the carrier 12 can be non-neighboring or partially overlapping.
  • the carrier 12 in FIGl can have various forms, such as a light tube, a sheet, etc.
  • the carrier 12 in FIGl is a light tube or a sheet.
  • FIG.2 illustrates an embodiment of the illumination apparatus 10 in FIGl.
  • the carrier 12 in FIG.2 is a light tube.
  • the illumination apparatus 10 comprises a radiation source 11, a light tube 12 and a shield 13.
  • the radiation source 11 is located inside the light tube 12 and the shield 13 is arranged between the radiation source 11 and the light tube 12.
  • the radiation source 11 is cylindrical
  • the shield 13 is semi-cylindrical
  • the light tube 12 is cylindrical and the radii of the light tube 12, the shield 13 and the radiation source 11 decreases successively.
  • the shapes of the radiation source 11, the shield 13 and the light tube 12 in FIG.2 are exemplary. It is to be understood by one of ordinary skill in the art that, in practical applications, the radiation source 11, the shield 13 and the light tube 12 are not limited to the shapes in FIG.2.
  • the radiation source 11 and the light tube 12 can be of triangular prismatic, elliptic cylindrical or other irregular shape.
  • the shield 13 can be in any shape, provided it can prevent the radiation source 11 from irradiating other kinds of phosphor when the radiation source 11 irradiates one kind of phosphor on the inner side of the light tube 12.
  • the radiation source 11 and the light tube 12 are made of glass pervious to light.
  • the shield 13 is made of plastic.
  • the radiation source 11 is a gas discharge UV light tube.
  • the inner side of the light tube 12 is coated with two kinds of phosphor which are respectively coated on two regions of the inner side of the light tube 12. It is to be understood by one of ordinary skill in the art that, in practical applications, the inner side of the light tube 12 can be coated with at least two kinds of phosphor and the at least two kinds of phosphor can be coated on at least two regions of the inner side of the light tube 12.
  • the two kinds of phosphor are coated on the inner side of the light tube 12 in a bisectional, neighboring manner.
  • the two regions coated with two kinds of phosphor on the inner side of the light tube 12 are referred to as the first phosphor region and the second phosphor region, respectively.
  • the radiation source 11 is located inside the light tube 12 and the shield is arranged between the radiation source 11 and the light tube 12.
  • the shield 13 is configured to prevent the radiation source 11 from irradiating the second phosphor region, and vice versa.
  • the surface of the shield 13 facing the radiation source 11 is a reflecting surface.
  • the shield 13 is configured to prevent the radiation source 11 from irradiating the second phosphor region and to reflect the light, which the radiation source 11 irradiated on the reflecting surface of the shield 13, to the first phosphor region on the inner side of the light tube 12, thereby promoting the light generation efficiency of the light tube 12, and vice versa.
  • the reflecting surface of the shield 13 can be obtained by coating a metal film on the surface of the shield 13 facing the radiation source 11.
  • the irradiation region, irradiated by the radiation source 11, on the inner side of the light tube 12 can switch between the first and second phosphor regions.
  • the radiation source 11 and the shield 13 are fixed, and by rotating the light tube 12, the irradiation region, irradiated by the radiation source 11, on the inner side of the light tube 12 can switch between the first and second phosphor regions.
  • the radiation source 11 and the light tube 12 are fixed, and by rotating the shield 13, the irradiation region, irradiated by the radiation source 11, on the inner side of the light tube 12 can switch between the first and second phosphor regions.
  • the illumination apparatus 10 in FIG.2 further comprises a driver (not shown in FIG.2).
  • the driver is connected with the light tube 12 and configured to drive the light tube 12 to rotate relative to the radiation source 11 and the shield 13, so that the irradiation region, irradiated by the radiation source 11, on the inner side of the light tube 12 can switch between the first and second phosphor regions.
  • the driver is a motor.
  • the driver is not a necessary component of the illumination apparatus 10.
  • the irradiation region, irradiated by the radiation source 11, on the inner side of the light tube 12 can switch between the first and second phosphor regions likewise.
  • the illumination apparatus 10 further comprises a controller (not shown in FIG.2).
  • the controller is configured to send controlling signals to the driver for controlling the operation of the driver.
  • the driver When the driver is connected with the light tube 12, the driver receives the controlling signals from the controller, and drives the light tube 12 to rotate relative to the radiation source 11 and the shield 13 so that the irradiation region, irradiated by the radiation source 11, on the inner side of the light tube 12 can switch from the first to the second phosphor region, or from the second to the first phosphor region.
  • the driver when the driver is connected with the shield 13, the driver receives the controlling signals from the controller, and drives the shield 13 to rotate relative to the light tube 12 and the radiation source 11 so that the irradiation region, irradiated by the radiation source 11, on the inner side of the light tube 12 can switch from the first to the second phosphor region, or from the second to the first phosphor region.
  • the shield 13 in FIG.2 is not a necessary component.
  • the irradiation region, irradiated by the radiation source 11 on the inner side of the light tube 12 can switch between the first and second phosphor regions.
  • the illumination apparatus 10 in FIG.2 can be a desk lamp, a wall lamp, a ceiling lamp, etc.
  • the illumination apparatus 10 is a desk lamp.
  • FIG.3 illustrates an example of the illumination apparatus 10 in FIG.2.
  • the illumination apparatus 10 in FIG.3 is a desk lamp.
  • the desk lamp 10 comprises a lamp shade 14, a lamp post 15 and a lamp base 16.
  • One end of the lamp post 15 is connected with the lamp shade 14 and the other end is connected with the lamp base 16.
  • the desk lamp 10 further comprises a light tube 12, a radiation source 11 and a shield 13, wherein the light tube 12 is located inside the lamp shade 14, the radiation source 11 is located inside the light tube 12, and the shield 13 is arranged between the radiation source 11 and the light tube 12. As described above, the shield 13 is not a necessary component of the desk lamp 10.
  • the inner side of the light tube 12 is still coated with two kinds of phosphor which are respectively coated on two regions of the inner side of the light tube 12. It is to be understood by one of ordinary skill in the art that, in practical applications, the inner side of the light tube 12 can be coated with at least two kinds of phosphor and the at least two kinds of phosphor can be coated on at least two regions on the inner side of the light tube 12.
  • one kind of phosphor coated on the inner side of the light tube 12 is configured to generate HCT light, and the other is configured to generate LCT light.
  • the irradiation region, irradiated by the radiation source 11, on the inner side of the light tube 12 can switch between the two regions coated with phosphor, so that the desk lamp 10 can generate HCT light or LCT light.
  • the reader needs to concentrate on his reading, then he can rotate the light tube 12 or the shield 13 to make the radiation source 11 irradiate the phosphor capable of generating HCT light, so that the desk lamp 10 generates HCT light.
  • the reader wants to do some leisurely reading before going to sleep, then he can rotate the light tube 12 or the shield 13 to make the radiation source 11 irradiate the phosphor capable of generating LCT light, so that the desk lamp 10 generates LCT light.
  • the desk lamp 10 comprises a driver (not shown in FIG.3).
  • the driver can be connected with the light tube 12 or the shield 13.
  • the driver is a motor.
  • the driver When the driver is connected with the light tube 12, the driver is configured to drive the light tube 12 to rotate relative to the radiation source 11 and the shield 13, so that the irradiation region, irradiated by the radiation source 11, on the inner side of the light tube 12 can switch between the two regions coated with phosphor on the inner side of the light tube 12.
  • the driver is not a necessary component of the desk lamp 10.
  • the irradiation region, irradiated by the radiation source 11, on the inner side of the light tube 12 can switch between the two regions coated with phosphor likewise.
  • the desk lamp comprises a controller (not shown in FIG.3).
  • the controller is configured to send controlling signals to the driver for controlling the operation of the driver.
  • the controller comprises a button.
  • the reader can trigger the controller to send control signals to the driver for controlling the operation of the driver by pushing the button.
  • the controller comprises a clock. When a certain o'clock has arrived, the controller is triggered to send control signals to the driver for controlling the operation of the driver.
  • FIG.4 illustrates another embodiment of the illumination apparatus 10 in FIGl.
  • the carrier 12 in FIG.4 is a sheet.
  • the illumination apparatus 10 comprises a radiation source 11, a sheet 12 and a shield 13.
  • the shield 13 is arranged between the radiation source 11 and the sheet 12.
  • the shapes of the radiation source 11, the sheet 12 and the shield 13 in FIG.4 are exemplary. It is to be understood by one of ordinary skill in the art that the radiation source 11, the sheet 12 and the shield 13 are not limited to the shapes in FIG.4.
  • the sheet 12 is a diffusive plate.
  • the shield 13 is made of plastic.
  • the radiation source 11 is a UV light emitting diode or a blue light emitting diode.
  • the sheet 12 is coated with two kinds of phosphor and the two kinds of phosphor are coated on two regions of the sheet 12. It is to be understood by one of ordinary skill in the art that, in practical applications, the sheet 12 can be coated with at least two kinds of phosphor and the at least two kinds of phosphor can be coated on at least two regions of the sheet 12.
  • the two kinds of phosphor can be coated on the sheet 12 in a bisectional, neighboring manner.
  • the two regions coated with phosphor of the sheet 12 are respectively referred to as the first phosphor region and the second phosphor region hereinafter.
  • the shield 13 is arranged between the radiation source 11 and the sheet 12.
  • the shield 13 is configured to prevent the radiation source 11 from irradiating the second phosphor region, and vice versa.
  • the irradiation region, irradiated by the radiation source 11, on the sheet 12 can switch between the first and the second phosphor regions.
  • the radiation source 11 and the sheet 12 are fixed, and by moving the shield 13, the irradiation region, irradiated by the radiation source 11, on the sheet 12 can switch from the first to the second phosphor region or from the second to the first phosphor region.
  • the illumination apparatus 10 in FIG.4 further comprises a driver (not shown in FIG.4).
  • the driver is connected with the shield 13 and configured to drive the shield 13 to move relative to the sheet 12 and the radiation source 11, so that the irradiation region, irradiated by the radiation source 11, on the sheet 12 can switch between the first and the second regions of the sheet 12.
  • the driver is a motor.
  • the driver is not a necessary component of the illumination apparatus 10.
  • the shield 13 manually, the irradiation region, irradiated by the radiation source 11, on the sheet 12 can switch between the first and the second phosphor regions likewise.
  • the illumination apparatus 10 in FIG.4 further comprises a controller (not shown in FIG.4), the controller is configured to send control signals to the driver for controlling the operation of the driver.
  • the driver When the driver is connected with the shield 13, the driver receives the control signals from the controller, and drives the shield 13 to move relative to the sheet 12 and the radiation source 11 so that the irradiation region, irradiated by the radiation source 11, on the sheet 12 can switch from the first to the second phosphor region, or from the second to the first phosphor region.
  • the shield 13 in FIG.4 is not a necessary component.
  • the area of the sheet 12 is large enough and the irradiation region, irradiated by the radiation source 11, on the sheet 12 is smaller than either region coated with phosphor of the sheet 12, then, by merely moving the sheet 12, the irradiation region, irradiated by the radiation source 11, on the sheet 12 can switch between the two regions coated with phosphor.
  • the carrier may be a sheet coated with two kinds of phosphor which are respectively coated on two regions of the sheet.
  • the carrier can be composed of two sheets, each coated with one kind of phosphor.
  • the irradiation region irradiated by the radiation source 11 can switch between the two sheets so that the illumination apparatus 10 can generate light of two color temperatures.
  • the number of sheets comprised in the carrier is not limited to two.
  • the illumination apparatus 10 in FIG.4 can be a desk lamp, a wall lamp, a ceiling lamp, etc.
  • the illumination apparatus 10 is a desk lamp.
  • FIG.5 illustrates an example of the illumination apparatus 10 in FIG.4.
  • the illumination apparatus 10 is a desk lamp.
  • the desk lamp 10 comprises a lamp shade 14, a lamp post 15 and a lamp base 16.
  • One end of the lamp post 15 is connected with the lamp shade 14 and the other end is connected with the lamp base 16.
  • a slit 141 is arranged on the lamp shade 14 to accommodate the sheet 12.
  • the desk lamp 10 further comprises a radiation source 11, a sheet 12 and a shield 13, wherein the radiation source 11 is located inside the lamp shade 14, the sheet 12 can be inserted in the slit 141 of the lamp shade 14, and the shield 13 is arranged between the radiation source 11 and the sheet 12. As described above, the shield 13 is not a necessary component of the desk lamp 10.
  • the sheet 12 is still coated with two kinds of phosphor and the two kinds of phosphor are respectively on the two regions of the sheet 12. It is to be understood by one of ordinary skill in the art that, in practical applications, the sheet 12 can be coated with at least two kinds of phosphor and the at least two kinds of phosphor can be respectively coated on at least two regions of the sheet 12.
  • one kind of phosphor coated on the sheet 12 is configured to generate HCT light and the other is configured to generate LCT light.
  • the irradiation region, irradiated by the radiation source 11, on the sheet 12 can switch between the two regions coated with phosphor of the sheet 12, so that the desk lamp 10 can generate HCT light or LCT light.
  • the reader can move the shield 13 so as to make the radiation source 11 irradiate the phosphor capable of generating HCT light, so that the desk lamp 10 generates HCT light.
  • the reader can move the shield 13 so as to make the radiation source 11 irradiate the phosphor capable of generating LCT light, so that the desk lamp 10 generates LCT light.
  • the desk lamp 10 comprises a driver (not shown in FIG.5).
  • the driver is connected with the shield 13 and configured to drive the shield 13 so as to move relative to the sheet 12 and the radiation source 11, so that the irradiation region, irradiated by the radiation source 11, on the sheet 12 can switch between the two regions coated with phosphor.
  • the driver is a motor.
  • the driver of the desk lamp 10 is not a necessary component.
  • the irradiation region, irradiated by the radiation source 11, on the sheet 12 can switch between the two regions coated with phosphor.
  • the desk lamp 10 comprises a controller (not shown in FIG.5).
  • the controller is configured to send control signals to the driver for controlling the operation of the driver.
  • the controller comprises a button.
  • the reader can trigger the controller to send control signals to the driver for controlling the operation of the driver by pushing the button.
  • the controller comprises a clock. When a certain o'clock has arrived, the controller is triggered to send control signals to the driver for controlling the operation of the driver.
  • desk lamp 10 in FIG.5 is exemplary.
  • the sheet 12 comprised in the desk lamp 10 can be replaced by two sheets, each coated with one kind of phosphor.
  • the shield 13 there is no need to use the shield 13, and by merely changing the sheet inserted in the slit 141 of the lamp shade 14, the irradiation region irradiated by the radiation source 11 can switch between the two sheets, thus enabling the desk lamp 10 to generate light of two color temperatures.
  • the number of sheets comprised in the desk lamp 10 is not limited to two.

Abstract

L'invention concerne un appareil d'éclairage (10), comprenant une source de rayonnement (11) et un support (12) recouvert de deux types ou plus de phosphore disposés sur deux régions ou plus du support, la région de rayonnement sur le support (12) irradiée par la source de rayonnement pouvant commuter entre les deux régions ou plus recouvertes de phosphore du support. Etant donné que la région de rayonnement sur le support irradié par la source de rayonnement (11) peut commuter entre les deux régions recouvertes de phosphore, l'appareil d'éclairage selon l'invention peut générer de la lumière de différentes températures de couleur.
PCT/IB2010/052430 2009-06-02 2010-06-01 Appareil d'éclairage WO2010140112A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910142729 2009-06-02
CN200910142729.1 2009-06-02

Publications (1)

Publication Number Publication Date
WO2010140112A1 true WO2010140112A1 (fr) 2010-12-09

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Application Number Title Priority Date Filing Date
PCT/IB2010/052430 WO2010140112A1 (fr) 2009-06-02 2010-06-01 Appareil d'éclairage

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013030731A3 (fr) * 2011-08-30 2013-04-25 Koninklijke Philips Electronics N.V. Appareil d'éclairage
US9333904B2 (en) 2012-03-08 2016-05-10 Koninklijke Philips N.V. Controllable high luminance illumination with moving light-sources
US9482413B2 (en) 2012-04-05 2016-11-01 Koninklijke Philips N.V. Colour sequential lighting device

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