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US20200236744A1 - Led light apparatus with adjustable characteristic - Google Patents

Led light apparatus with adjustable characteristic Download PDF

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Publication number
US20200236744A1
US20200236744A1 US16/296,208 US201916296208A US2020236744A1 US 20200236744 A1 US20200236744 A1 US 20200236744A1 US 201916296208 A US201916296208 A US 201916296208A US 2020236744 A1 US2020236744 A1 US 2020236744A1
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US
United States
Prior art keywords
led module
light
led
mode
module
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.)
Abandoned
Application number
US16/296,208
Inventor
Yan Biao Chen
Hong Kui Jiang
Wei Liu
qi yuan Wang
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.)
Xiamen Eco Lighting Co Ltd
Original Assignee
Xiamen Eco Lighting 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 Xiamen Eco Lighting Co Ltd filed Critical Xiamen Eco Lighting Co Ltd
Priority to US16/296,208 priority Critical patent/US20200236744A1/en
Assigned to XIAMEN ECO LIGHTING CO. LTD. reassignment XIAMEN ECO LIGHTING CO. LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, YAN BIAO, JIANG, HONG KUI, LIU, WEI, WANG, QI YUAN
Publication of US20200236744A1 publication Critical patent/US20200236744A1/en
Abandoned legal-status Critical Current

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Classifications

    • H05B33/086—
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • 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
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • H05B33/06—Electrode terminals
    • H05B33/0815—
    • H05B37/0272—
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/19—Controlling the light source by remote control via wireless transmission
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/196—Controlling the light source by remote control characterised by user interface arrangements
    • H05B47/1965—Controlling the light source by remote control characterised by user interface arrangements using handheld communication devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • 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
    • 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
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/50—Light sources with three-dimensionally disposed light-generating elements on planar substrates or supports, but arranged in different planes or with differing orientation, e.g. on plate-shaped supports with steps on which light-generating elements are mounted
    • 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources

Definitions

  • the present invention is related to a light apparatus and more particularly related to a LED light apparatus with adjustable characteristic.
  • a light apparatus includes a white set of LED (Light Emitted Diode) modules and a non-white set of LED modules.
  • the white set of LED modules may include two or more than two LED modules.
  • Each LED module may have one or more than one LED component, e.g. a packaged LED IC covered with fluorescent layer for emitting a light when receiving a driving current.
  • the non-white set of LED modules may include two or more than two LED modules.
  • Each LED module may have one or more than one LED component, e.g. a packaged LED IC covered with fluorescent layer for emitting a light when receiving a driving current.
  • LED components e.g. a packaged LED IC covered with fluorescent layer for emitting a light when receiving a driving current.
  • the white set of LED modules has a first LED module and a second LED module.
  • the first LED module emits a first light with a first color temperature and the second LED module emits a second light with a second color temperature.
  • the first color temperature is different from the second color temperature.
  • the first LED module may emit a light with similar spectrum as sunrise white light
  • the second LED module may emit a light with similar spectrum as noon white light.
  • the non-white set of LED modules includes a third LED module and a fourth LED module.
  • the third LED module emits a third light with a third color and the fourth LED module emits a fourth light with a fourth color.
  • the third color is different from the fourth color.
  • the light apparatus also has a control circuit for indicating an operation mode selected from at least a first mode and a second mode.
  • the control circuit may be a digital circuit or integrated with a mechanic device for storing a status. Users may adjust a manual switch, operate a remote control for setting or adjusting the control circuit for indicating a different operation mode that may be selected from a first mode, a second mode and/or other modes.
  • a driver module is connected to the control circuit for selectively supplying currents to the first LED module, the second LED module, the third LED module, and the fourth LED module according to the operation mode.
  • the driver module may include a current source, a PWM power circuit or other driver circuit types, for converting 110V or 220V AC to corresponding DC currents supplying to drive the white set of LED modules and the non-white set of LED modules.
  • the first LED module and the second LED module are activated and the third LED module and the fourth LED module are deactivated for mixing a first output light using the first LED module and the second LED module.
  • no current is supplied to the non-white set of LED modules in the first mode.
  • the first LED module and the second LED module are supplied with different currents to obtain different first output lights with different color temperatures.
  • the first LED and the second LED module are deactivated and the third LED module and the fourth LED module are activated for mixing a second output light using the third LED module and the fourth LED module.
  • the first LED module and the second LED module are turned off.
  • the third LED module, the fourth LED module and maybe other LED module in the non-white set of LED modules are turned on to mix a desired color.
  • the first output light is adjusted to a different color temperature by adjusting light strengths of the first LED module and the second LED module.
  • the different color temperature of the first output light is obtained by changing a first current ratio of currents supplying to the first LED module and the second LED module.
  • the different color temperature of the first output light is obtained by changing duty ratios of the first LED module and the second LED light module.
  • PWM power supplying there is a duty ratio, the turned-on to turned-off ratio in a quickly repeated cycle, in PWM current supply.
  • the duty ratio By adjusting the duty ratio, the overall output light strength is obtained.
  • a different color temperature By adjusting the relative duty ratio between the first LED module and the second LED module, a different color temperature may be mixed.
  • the first LED module and the second LED module emit lights simulating black body radiation spectrums corresponding to different sun light times.
  • Black body radiation spectrum is used in Physics, for indicating light characteristics similar to sun light features.
  • the non-white set of LED modules also includes a fifth LED module.
  • the third LED module emits a red light
  • the fourth LED module emits a green light
  • the fifth LED module emits a blue light.
  • the second output light is adjusted to have different colors by changing a output ratio of the third LED module, the fourth LED module and the fifth LED module.
  • the wireless circuit may implement Wi-Fi, Bluetooth, or other wireless protocols for receiving and/or transmitting signals to an external device like a mobile phone or a remote control.
  • the wireless circuit also receives an external command for adjusting the first output light and the second output light.
  • the external command may indicate a desired color temperature, a desired color, or a overall light strength for a luminance level.
  • a manual switch manually operated by a user for indicating the control circuit to choose the operation mode from the first mode and the second mode.
  • the manual switch may be installed on a wall, on a back side of the light apparatus, on a remote control or on other places for users to operate for setting the light apparatus.
  • the manual switch may be a button, a rotating switch, a touch panel, a jumper switch or other forms.
  • the control circuit may receive the status of the manual switch and translate the status to choose a corresponding operation mode or other parameters.
  • a light bulb as an example may be disposed with a manual switch near its bulb cap. Users may buy the same light bulb but switch the manual switch to set the output light of the light bulb to a desired color temperature or a desired color. This may decrease the storage in the store and users may even change the setting when they want to do so.
  • Such mechanism may also be applied to down light, panel light, spot light or other light devices.
  • the manual switch is concealed from direct user touch after installation of the light apparatus.
  • the driver circuit has a shared current circuit for supplying a driving current to either the white set of LED modules or the non-white set of LED modules.
  • a shared current source supplying a common current source either supplying to the white set of LED modules or the non-white set of LED modules.
  • the shared circuit switches the driving current to either the white set of LED modules or the non-white set of LED modules based on the operation mode.
  • the driver module adjusts the first output light by changing duty ratios of the first LED module and the second LED module via PWM power supplying.
  • the driver module adjusts the second output light by changing current ratios of the third LED module and the fourth LED module.
  • the driver module activates both the white set of LED modules and the non-white set of LED modules in a third mode for generating a third output light.
  • the driver module activates both the white set of LED modules and the non-white set of LED modules in a third mode for generating a third output light.
  • a mixed color of the third output light is changed by adjusting the non-white set of LED modules.
  • a mixed color temperature of the third output light is changed by adjusting the white set of LED modules.
  • the white set of LED modules and the non-white set of LED modules are placed in an alternating mixed manner.
  • the multiple LED modules may be disposed in an alternating mixed manner, e.g. different types of LED modules are placed next to each other while the same types of LED modules are distributed evenly on a light source plate.
  • control circuit switches to the first mode or the second mode when the white set of LED modules or the non-white set of LED modules are damaged.
  • FIG. 1 is a light apparatus embodiment, showing components with a cross-sectional view.
  • FIG. 2 shows another aspect of FIG. 1 .
  • FIG. 3 shows a top view of FIG. 1 .
  • FIG. 4 is a first example of circuit diagram in an embodiment.
  • FIG. 5 is a second example of circuit diagram in an embodiment.
  • LED Light Emitted Diode
  • the non-white set of LED modules may include LED modules with multiple colors that are not white.
  • the LED modules in the non-white LED set may emit red light, blue light or green light.
  • the light apparatus includes a driver circuit for providing a driving current supplying to the white set of LED modules and the non-white set of LED modules.
  • the driver circuit may supply different current to change emitted light strengths of the white set of LED modules and the non-white set of LED modules to blend a mixed overall light of the LED light apparatus.
  • the LED modules of different color temperatures in the white set of LED modules receive different currents to adjust overall color temperature of the white set of LED modules.
  • the first LED module may receive a 0.05 A current and the second LED module may receive a 0.50 A current.
  • the overall color temperature would appear with a 1 to 10 ratio between the color temperatures of the first LED module and second LED module. By changing the current ratio, the overall color temperature may be adjusted to a desired value dynamically.
  • the overall mixed light optical characteristic may also be adjusted by other techniques like adjusting duty ratio of the LED module.
  • the white set of LED modules and the non-white set of LED modules are categorized into two groups operated in separate modes respectively. Specifically, in such embodiment, the white set of LED modules and the non-white set of LED modules are not operated at the same time for mixing a desired optical characteristic.
  • the output white light is generated by one or more white LEDs.
  • the white LEDs (the white set of LED modules) can have different color temperatures so that the user can adjust to a specific color temperature by mixing the different white LEDs. None of the R, G, and B LEDs (the non-white set of LED modules) emit light in the white light mode. In other words, the white output light is generated by only mixing light from different white LEDs, not by using any R or G or B LEDs.
  • Ra8 of the white light mode is always lower than 85.
  • the output color light is generated only by mixing the R, G, and B LEDs. None of the white LEDs emit light in the color light mode. That is, the output color light is generated only by mixing light from the R, G, B LEDs, not by using any of the white LEDs.
  • the whites LEDs and the R, G, B LEDs do not emit light simultaneously.
  • FIG. 1 , FIG. 2 and FIG. 3 illustrate an light bulb example implementing the concept mentioned above.
  • a light bulb as a light apparatus, includes a bulb shell 101 , a bulb body housing 107 . There is a plugging terminal 1071 inserted to a bottom of the bulb body housing 107 . A heat sink component 105 like a metal cup is attached for bringing heat of a light source plate 104 to the bulb body housing 107 .
  • the driver circuit board enclosed by the bulb body housing 107 .
  • the driver circuit is connected to the plugging terminal 1071 and the cap terminal 103 for receiving an external power source.
  • the driver circuit board is mounted with a driver circuit 109 and a wireless circuit 108 .
  • the driver circuit 109 generates one or multiple driving currents by converting the external power source, like 110V or 220V alternating current source.
  • the light source plate 104 mounted with the LED modules has a pluggable socket 106 for receiving a pin of the driver circuit board for supplying electricity to the LED modules on the light source plate 104 .
  • the pluggable socket 106 By using the pluggable socket 106 , welding may be replaced with an easier assembling structure.
  • the wireless circuit 108 may implement one or multiple wireless protocols like Wi-Fi, Bluetooth, Zigbee, Z-wave and an antenna 102 is protruding upwardly for transmitting and/or receiving signal for the wireless circuit 108 . 1
  • the bulb shell has an elastic hook 110 to be connected to the bulb body housing, which may strengthen the structure of the light apparatus.
  • the white set of LED modules include a first white LED module 114 and a second white LED module 115 .
  • the first white LED module 114 and the second white LED module 115 are both white LED modules but have different color temperatures. As mentioned above, in a first mode, the first white LED module 114 and the second white LED module 115 may be adjusted for mixing a desired color temperature.
  • the non-white set of LED modules has a red LED module 111 , a green LED module 112 , a blue LED module 113 .
  • the light apparatus may emit different light colors in the second mode.
  • FIG. 4 an illustrative circuit diagram is provided for explaining how to implement the driver circuit.
  • the driver circuit has a bridge circuit 201 for filtering an AC current.
  • a DC to AC converter 202 is used for generating a stable DC current supplying to a wireless circuit 2062 and a driver chip 203 .
  • the wireless circuit 2062 is connected to an antenna 2061 for receiving an external command.
  • the driver chip 203 receives the DC current may be controlled by a manual switch, a default setting, or the external command received by the wireless circuit 2062 for generating separate driving currents respectively to a white set of LED components 205 and a non-white set of LED components 204 .
  • the white set of LED components 205 may have a first white LED component 2051 and a second white LED component 2052 with different color temperatures.
  • the non-white set of LED components 204 may include a red LED component 2041 , a green LED component 2042 , a blue LED component 2043 .
  • FIG. 5 illustrate another circuit design.
  • the bridge circuit 301 filters an AC current.
  • the wireless circuit 306 receives signals from an antenna 307 .
  • the signals may include an external command for changing the currents of the AC-DC converters 302 , 303 for changing color temperatures or colors as mentioned above in the first mode or the second mode.
  • a light apparatus includes a white set of LED (Light Emitted Diode) modules and a non-white set of LED modules.
  • the white set of LED modules may include two or more than two LED modules.
  • Each LED module may have one or more than one LED component, e.g. a packaged LED IC covered with fluorescent layer for emitting a light when receiving a driving current.
  • the non-white set of LED modules may include two or more than two LED modules.
  • Each LED module may have one or more than one LED component, e.g. a packaged LED IC covered with fluorescent layer for emitting a light when receiving a driving current.
  • LED components e.g. a packaged LED IC covered with fluorescent layer for emitting a light when receiving a driving current.
  • the white set of LED modules has a first LED module and a second LED module.
  • the first LED module emits a first light with a first color temperature and the second LED module emits a second light with a second color temperature.
  • the first color temperature is different from the second color temperature.
  • the first LED module may emit a light with similar spectrum as sunrise white light
  • the second LED module may emit a light with similar spectrum as noon white light.
  • the non-white set of LED modules includes a third LED module and a fourth LED module.
  • the third LED module emits a third light with a third color and the fourth LED module emits a fourth light with a fourth color.
  • the third color is different from the fourth color.
  • the light apparatus also has a control circuit for indicating an operation mode selected from at least a first mode and a second mode.
  • the control circuit may be a digital circuit or integrated with a mechanic device for storing a status. Users may adjust a manual switch, operate a remote control for setting or adjusting the control circuit for indicating a different operation mode that may be selected from a first mode, a second mode and/or other modes.
  • a driver module is connected to the control circuit for selectively supplying currents to the first LED module, the second LED module, the third LED module, and the fourth LED module according to the operation mode.
  • the driver module may include a current source, a PWM power circuit or other driver circuit types, for converting 110V or 220V AC to corresponding DC currents supplying to drive the white set of LED modules and the non-white set of LED modules.
  • the first LED module and the second LED module are activated and the third LED module and the fourth LED module are deactivated for mixing a first output light using the first LED module and the second LED module.
  • no current is supplied to the non-white set of LED modules in the first mode.
  • the first LED module and the second LED module are supplied with different currents to obtain different first output lights with different color temperatures.
  • the first LED and the second LED module are deactivated and the third LED module and the fourth LED module are activated for mixing a second output light using the third LED module and the fourth LED module.
  • the first LED module and the second LED module are turned off.
  • the third LED module, the fourth LED module and maybe other LED module in the non-white set of LED modules are turned on to mix a desired color.
  • the first output light is adjusted to a different color temperature by adjusting light strengths of the first LED module and the second LED module.
  • the different color temperature of the first output light is obtained by changing a first current ratio of currents supplying to the first LED module and the second LED module.
  • the different color temperature of the first output light is obtained by changing duty ratios of the first LED module and the second LED light module.
  • PWM power supplying there is a duty ratio, the turned-on to turned-off ratio in a quickly repeated cycle, in PWM current supply.
  • the duty ratio By adjusting the duty ratio, the overall output light strength is obtained.
  • a different color temperature By adjusting the relative duty ratio between the first LED module and the second LED module, a different color temperature may be mixed.
  • the non-white set of LED modules also includes a fifth LED module.
  • the third LED module emits a red light
  • the fourth LED module emits a green light
  • the fifth LED module emits a blue light.
  • the second output light is adjusted to have different colors by changing a output ratio of the third LED module, the fourth LED module and the fifth LED module.
  • the wireless circuit may implement Wi-Fi, Bluetooth, or other wireless protocols for receiving and/or transmitting signals to an external device like a mobile phone or a remote control.
  • the wireless circuit also receives an external command for adjusting the first output light and the second output light.
  • the external command may indicate a desired color temperature, a desired color, or a overall light strength for a luminance level.
  • a manual switch manually operated by a user for indicating the control circuit to choose the operation mode from the first mode and the second mode.
  • the manual switch may be installed on a wall, on a back side of the light apparatus, on a remote control or on other places for users to operate for setting the light apparatus.
  • the manual switch may be a button, a rotating switch, a touch panel, a jumper switch or other forms.
  • the control circuit may receive the status of the manual switch and translate the status to choose a corresponding operation mode or other parameters.
  • a light bulb as an example may be disposed with a manual switch near its bulb cap. Users may buy the same light bulb but switch the manual switch to set the output light of the light bulb to a desired color temperature or a desired color. This may decrease the storage in the store and users may even change the setting when they want to do so.
  • Such mechanism may also be applied to down light, panel light, spot light or other light devices.
  • the manual switch is concealed from direct user touch after installation of the light apparatus.
  • the driver circuit has a shared current circuit for supplying a driving current to either the white set of LED modules or the non-white set of LED modules.
  • a shared current source supplying a common current source either supplying to the white set of LED modules or the non-white set of LED modules.
  • the shared circuit switches the driving current to either the white set of LED modules or the non-white set of LED modules based on the operation mode.
  • the driver module adjusts the first output light by changing duty ratios of the first LED module and the second LED module via PWM power supplying.
  • the driver module adjusts the second output light by changing current ratios of the third LED module and the fourth LED module.
  • the driver module activates both the white set of LED modules and the non-white set of LED modules in a third mode for generating a third output light.
  • the driver module activates both the white set of LED modules and the non-white set of LED modules in a third mode for generating a third output light.
  • a mixed color of the third output light is changed by adjusting the non-white set of LED modules.
  • a mixed color temperature of the third output light is changed by adjusting the white set of LED modules.
  • the white set of LED modules and the non-white set of LED modules are placed in an alternating mixed manner.
  • the multiple LED modules may be disposed in an alternating mixed manner, e.g. different types of LED modules are placed next to each other while the same types of LED modules are distributed evenly on a light source plate.
  • one LED module of the white set of LED modules may be placed adjacent to one LED module of the non-white set of LED modules for achieving better heat dissipation, i.e. heat not accumulated at the same place.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Device Packages (AREA)

Abstract

A light apparatus has a white set of LED modules and non-white set of LED modules. A control circuit is used for indicating an operation mode selected from at least a first mode and a second mode. In the first mode, the white set of LED modules are used for mixing a first output light and the in the second mode, the non-white set of LED modules are used for mixing a second output light. A wireless circuit may be used for receiving an external command to control the light apparatus.

Description

    RELATED APPLICATION
  • This application claims priority of a provisional application No. 62/793,847.
    • FIELD
  • The present invention is related to a light apparatus and more particularly related to a LED light apparatus with adjustable characteristic.
    • BACKGROUND
  • When the LED technology keeps advancing, more types of LED light devices are developed and designed. There is always a strong need to find a convenient, low cost and flexible light apparatus for improving human life.
    • SUMMARY OF INVENTION
  • In some embodiments, a light apparatus includes a white set of LED (Light Emitted Diode) modules and a non-white set of LED modules. The white set of LED modules may include two or more than two LED modules. Each LED module may have one or more than one LED component, e.g. a packaged LED IC covered with fluorescent layer for emitting a light when receiving a driving current. There are more than two types of LED modules that emit different white lights, e.g. with different color temperatures, in the white set of LED modules.
  • The non-white set of LED modules may include two or more than two LED modules. Each LED module may have one or more than one LED component, e.g. a packaged LED IC covered with fluorescent layer for emitting a light when receiving a driving current. There are more than two types of LED modules that emit different lights, e.g. with different colors, in the non-white set of LED modules.
  • For example, the white set of LED modules has a first LED module and a second LED module. The first LED module emits a first light with a first color temperature and the second LED module emits a second light with a second color temperature. The first color temperature is different from the second color temperature. For example, the first LED module may emit a light with similar spectrum as sunrise white light, and the second LED module may emit a light with similar spectrum as noon white light.
  • For example, the non-white set of LED modules includes a third LED module and a fourth LED module. The third LED module emits a third light with a third color and the fourth LED module emits a fourth light with a fourth color. The third color is different from the fourth color. There may be a fifth LED module so that the third LED module, the fourth LED module and the fifth LED module emit red color, blue color and green color, respectively. By adjusting light strengths of non-white set of LED modules, a desired color may be mixed.
  • The light apparatus also has a control circuit for indicating an operation mode selected from at least a first mode and a second mode. The control circuit, for example, may be a digital circuit or integrated with a mechanic device for storing a status. Users may adjust a manual switch, operate a remote control for setting or adjusting the control circuit for indicating a different operation mode that may be selected from a first mode, a second mode and/or other modes.
  • A driver module is connected to the control circuit for selectively supplying currents to the first LED module, the second LED module, the third LED module, and the fourth LED module according to the operation mode. The driver module may include a current source, a PWM power circuit or other driver circuit types, for converting 110V or 220V AC to corresponding DC currents supplying to drive the white set of LED modules and the non-white set of LED modules. There may be multiple sub-modules in the driver module respectively for each LED module or for the white set and the for the non-white set of LED modules, respectively.
  • In the first mode, the first LED module and the second LED module are activated and the third LED module and the fourth LED module are deactivated for mixing a first output light using the first LED module and the second LED module. For example, no current is supplied to the non-white set of LED modules in the first mode. The first LED module and the second LED module are supplied with different currents to obtain different first output lights with different color temperatures.
  • In the second mode, the first LED and the second LED module are deactivated and the third LED module and the fourth LED module are activated for mixing a second output light using the third LED module and the fourth LED module. For example, the first LED module and the second LED module are turned off. The third LED module, the fourth LED module and maybe other LED module in the non-white set of LED modules are turned on to mix a desired color.
  • In some embodiments, the first output light is adjusted to a different color temperature by adjusting light strengths of the first LED module and the second LED module.
  • In some embodiments, the different color temperature of the first output light is obtained by changing a first current ratio of currents supplying to the first LED module and the second LED module.
  • In some embodiments, the different color temperature of the first output light is obtained by changing duty ratios of the first LED module and the second LED light module. In PWM power supplying, there is a duty ratio, the turned-on to turned-off ratio in a quickly repeated cycle, in PWM current supply. By adjusting the duty ratio, the overall output light strength is obtained. By adjusting the relative duty ratio between the first LED module and the second LED module, a different color temperature may be mixed.
  • In some embodiments, the first LED module and the second LED module emit lights simulating black body radiation spectrums corresponding to different sun light times. Black body radiation spectrum is used in Physics, for indicating light characteristics similar to sun light features.
  • In some embodiments, the non-white set of LED modules also includes a fifth LED module. The third LED module emits a red light, the fourth LED module emits a green light and the fifth LED module emits a blue light. The second output light is adjusted to have different colors by changing a output ratio of the third LED module, the fourth LED module and the fifth LED module.
  • In some embodiments, there is a wireless circuit connected to the control circuit for choosing the operation mode from the first mode and the second mode. The wireless circuit may implement Wi-Fi, Bluetooth, or other wireless protocols for receiving and/or transmitting signals to an external device like a mobile phone or a remote control.
  • In some embodiments, the wireless circuit also receives an external command for adjusting the first output light and the second output light. The external command may indicate a desired color temperature, a desired color, or a overall light strength for a luminance level.
  • In some embodiments, there is a manual switch manually operated by a user for indicating the control circuit to choose the operation mode from the first mode and the second mode. For example, the manual switch may be installed on a wall, on a back side of the light apparatus, on a remote control or on other places for users to operate for setting the light apparatus. The manual switch may be a button, a rotating switch, a touch panel, a jumper switch or other forms. The control circuit may receive the status of the manual switch and translate the status to choose a corresponding operation mode or other parameters.
  • For example, a light bulb as an example may be disposed with a manual switch near its bulb cap. Users may buy the same light bulb but switch the manual switch to set the output light of the light bulb to a desired color temperature or a desired color. This may decrease the storage in the store and users may even change the setting when they want to do so. Such mechanism may also be applied to down light, panel light, spot light or other light devices.
  • In some embodiments, the manual switch is concealed from direct user touch after installation of the light apparatus.
  • In some embodiments, the driver circuit has a shared current circuit for supplying a driving current to either the white set of LED modules or the non-white set of LED modules. As mentioned above, since the white set of LED module and the non-white set of LED modules may be set not turning on at the same time, there may be a shared current source supplying a common current source either supplying to the white set of LED modules or the non-white set of LED modules. In other words, in such design, there may be two sets of LED modules, but there may be only one set of driver circuit. Since the cost of LED modules are decreasing, the overall value of such design keeps increasing.
  • In some embodiments, the shared circuit switches the driving current to either the white set of LED modules or the non-white set of LED modules based on the operation mode.
  • In some embodiments, the driver module adjusts the first output light by changing duty ratios of the first LED module and the second LED module via PWM power supplying.
  • In some embodiments, the driver module adjusts the second output light by changing current ratios of the third LED module and the fourth LED module.
  • In some embodiments, the driver module activates both the white set of LED modules and the non-white set of LED modules in a third mode for generating a third output light.
  • In some embodiments, the driver module activates both the white set of LED modules and the non-white set of LED modules in a third mode for generating a third output light.
  • In some embodiments, a mixed color of the third output light is changed by adjusting the non-white set of LED modules.
  • In some embodiments, a mixed color temperature of the third output light is changed by adjusting the white set of LED modules.
  • In some embodiments, the white set of LED modules and the non-white set of LED modules are placed in an alternating mixed manner. Specifically, there may be multiple LED modules in the white set of LED modules and the non-white set of LED modules. To mix a better output light, the multiple LED modules may be disposed in an alternating mixed manner, e.g. different types of LED modules are placed next to each other while the same types of LED modules are distributed evenly on a light source plate.
  • In addition, since the first mode and the second mode determine that the white set of LED modules and the non-white set of LED modules are not turned on at the same time, one LED module of the white set of LED modules may be placed adjacent to one LED module of the non-white set of LED modules for achieving better heat dissipation, i.e. heat not accumulated at the same place.
  • In some embodiments, the control circuit switches to the first mode or the second mode when the white set of LED modules or the non-white set of LED modules are damaged.
    • BRIEF DESCRIPTION OF DRAWINGS
  • FIG. 1 is a light apparatus embodiment, showing components with a cross-sectional view.
  • FIG. 2 shows another aspect of FIG. 1.
  • FIG. 3 shows a top view of FIG. 1.
  • FIG. 4 is a first example of circuit diagram in an embodiment.
  • FIG. 5 is a second example of circuit diagram in an embodiment.
    •  DETAILED DESCRIPTION
  • This invention implements following concept in various light bulbs, downlight light, spot lights, any luminous devices and/or electronic devices with light components. LED (Light Emitted Diode) modules, not limited, are preferred in following embodiments.
  • In an embodiment, a light apparatus includes a white set of LED modules and a non-white set of LED modules. The white set of LED modules include multiple LED modules with more than one type of optical characteristic. For example, the white set of LED modules has a first LED module with a first color temperature that is close to sunrise sunshine. In addition, the white set of LED modules also has a second LED module with a second color temperature that is close to noon time sunshine. Both the first LED module and the second LED module are “white” LED modules although they may have different color temperatures.
  • The non-white set of LED modules may include LED modules with multiple colors that are not white. For example, the LED modules in the non-white LED set may emit red light, blue light or green light.
  • The LED modules in the white set of LED modules or the non-white set of LED modules may contain the same LED chips, e.g. blue light LED chips, covered with different fluorescent layers for converting the original light of the LED chips to desired optical characteristic, e.g. white lights with different color temperatures, red light, green light or blue light.
  • The light apparatus includes a driver circuit for providing a driving current supplying to the white set of LED modules and the non-white set of LED modules. The driver circuit may supply different current to change emitted light strengths of the white set of LED modules and the non-white set of LED modules to blend a mixed overall light of the LED light apparatus. For example, the LED modules of different color temperatures in the white set of LED modules receive different currents to adjust overall color temperature of the white set of LED modules. In the example mentioned above, the first LED module may receive a 0.05 A current and the second LED module may receive a 0.50 A current. The overall color temperature would appear with a 1 to 10 ratio between the color temperatures of the first LED module and second LED module. By changing the current ratio, the overall color temperature may be adjusted to a desired value dynamically. In addition to change the current, the overall mixed light optical characteristic may also be adjusted by other techniques like adjusting duty ratio of the LED module.
  • In an embodiment, the white set of LED modules and the non-white set of LED modules are categorized into two groups operated in separate modes respectively. Specifically, in such embodiment, the white set of LED modules and the non-white set of LED modules are not operated at the same time for mixing a desired optical characteristic.
  • For example, the light apparatus may have a first mode and a second mode. In the first mode, the white set of LED modules are turned on while the non-white LED modules are turned off. In the first mode, the LED modules with different color temperatures or other optical characteristic may be adjusted respectively to mix a desired color temperature or other optical characteristic as mentioned above. In the second mode, the non-white set of LED modules are turned on, and the LED modules in the non-white set of LED modules are adjusted separately for mixing a desired color or other optical characteristic. In other words, in such embodiments, the white set of LED modules are not used together with the non-white set of LED modules for mixing a desired optical characteristic. The light apparatus has the white set of LED modules and the non-white set of LED modules at the same time, but the two sets of LED modules are not combined for mixing a desired optical characteristic.
  • In a white light mode (the first mode mentioned above), the output white light is generated by one or more white LEDs. The white LEDs (the white set of LED modules) can have different color temperatures so that the user can adjust to a specific color temperature by mixing the different white LEDs. None of the R, G, and B LEDs (the non-white set of LED modules) emit light in the white light mode. In other words, the white output light is generated by only mixing light from different white LEDs, not by using any R or G or B LEDs. In one embodiment, Ra8 of the white light mode is always lower than 85.
  • In a color light mode (the second mode mentioned above), the output color light is generated only by mixing the R, G, and B LEDs. None of the white LEDs emit light in the color light mode. That is, the output color light is generated only by mixing light from the R, G, B LEDs, not by using any of the white LEDs.
  • Thus, in this case, the whites LEDs and the R, G, B LEDs do not emit light simultaneously.
  • Please refer to FIG. 1, FIG. 2 and FIG. 3, which illustrate an light bulb example implementing the concept mentioned above.
  • In FIG. 1, a light bulb, as a light apparatus, includes a bulb shell 101, a bulb body housing 107. There is a plugging terminal 1071 inserted to a bottom of the bulb body housing 107. A heat sink component 105 like a metal cup is attached for bringing heat of a light source plate 104 to the bulb body housing 107.
  • There is a driver circuit board enclosed by the bulb body housing 107. The driver circuit is connected to the plugging terminal 1071 and the cap terminal 103 for receiving an external power source. The driver circuit board is mounted with a driver circuit 109 and a wireless circuit 108. The driver circuit 109 generates one or multiple driving currents by converting the external power source, like 110V or 220V alternating current source.
  • The wireless circuit 108 is used for receiving and/or sending a status to an external device like a mobile phone or a remote control. The commands from the external device may indicate the driver circuit 109 to change current or duty ratio to a white set of LED components and a non-white set of LED components.
  • The light source plate 104 mounted with the LED modules has a pluggable socket 106 for receiving a pin of the driver circuit board for supplying electricity to the LED modules on the light source plate 104. By using the pluggable socket 106, welding may be replaced with an easier assembling structure. The wireless circuit 108 may implement one or multiple wireless protocols like Wi-Fi, Bluetooth, Zigbee, Z-wave and an antenna 102 is protruding upwardly for transmitting and/or receiving signal for the wireless circuit 108. 1
  • In FIG. 2, the bulb shell has an elastic hook 110 to be connected to the bulb body housing, which may strengthen the structure of the light apparatus.
  • In FIG. 3, there is a white set of LED modules and a non-white set of LED modules. The white set of LED modules include a first white LED module 114 and a second white LED module 115. The first white LED module 114 and the second white LED module 115 are both white LED modules but have different color temperatures. As mentioned above, in a first mode, the first white LED module 114 and the second white LED module 115 may be adjusted for mixing a desired color temperature.
  • The non-white set of LED modules has a red LED module 111, a green LED module 112, a blue LED module 113. By adjusting current or duty ratio of the red LED module 111, the green LED module 112 and the blue LED module 113, the light apparatus may emit different light colors in the second mode.
  • In FIG. 4, an illustrative circuit diagram is provided for explaining how to implement the driver circuit.
  • In FIG. 4, the driver circuit has a bridge circuit 201 for filtering an AC current. A DC to AC converter 202 is used for generating a stable DC current supplying to a wireless circuit 2062 and a driver chip 203. The wireless circuit 2062 is connected to an antenna 2061 for receiving an external command. The driver chip 203 receives the DC current may be controlled by a manual switch, a default setting, or the external command received by the wireless circuit 2062 for generating separate driving currents respectively to a white set of LED components 205 and a non-white set of LED components 204. The white set of LED components 205 may have a first white LED component 2051 and a second white LED component 2052 with different color temperatures. The non-white set of LED components 204 may include a red LED component 2041, a green LED component 2042, a blue LED component 2043.
  • There are multiple ways to implement the circuit. For example, FIG. 5 illustrate another circuit design.
  • In FIG. 5, the bridge circuit 301 filters an AC current. There are two AC- DC converters 302, 303 respectively supplying power to a white set of LED components 304 and a non-white set of LED components 305. The wireless circuit 306 receives signals from an antenna 307. The signals may include an external command for changing the currents of the AC- DC converters 302, 303 for changing color temperatures or colors as mentioned above in the first mode or the second mode.
  • In some embodiments, a light apparatus includes a white set of LED (Light Emitted Diode) modules and a non-white set of LED modules. The white set of LED modules may include two or more than two LED modules. Each LED module may have one or more than one LED component, e.g. a packaged LED IC covered with fluorescent layer for emitting a light when receiving a driving current. There are more than two types of LED modules that emit different white lights, e.g. with different color temperatures, in the white set of LED modules.
  • The non-white set of LED modules may include two or more than two LED modules. Each LED module may have one or more than one LED component, e.g. a packaged LED IC covered with fluorescent layer for emitting a light when receiving a driving current. There are more than two types of LED modules that emit different lights, e.g. with different colors, in the non-white set of LED modules.
  • For example, the white set of LED modules has a first LED module and a second LED module. The first LED module emits a first light with a first color temperature and the second LED module emits a second light with a second color temperature. The first color temperature is different from the second color temperature. For example, the first LED module may emit a light with similar spectrum as sunrise white light, and the second LED module may emit a light with similar spectrum as noon white light.
  • For example, the non-white set of LED modules includes a third LED module and a fourth LED module. The third LED module emits a third light with a third color and the fourth LED module emits a fourth light with a fourth color. The third color is different from the fourth color. There may be a fifth LED module so that the third LED module, the fourth LED module and the fifth LED module emit red color, blue color and green color, respectively. By adjusting light strengths of non-white set of LED modules, a desired color may be mixed.
  • The light apparatus also has a control circuit for indicating an operation mode selected from at least a first mode and a second mode. The control circuit, for example, may be a digital circuit or integrated with a mechanic device for storing a status. Users may adjust a manual switch, operate a remote control for setting or adjusting the control circuit for indicating a different operation mode that may be selected from a first mode, a second mode and/or other modes.
  • A driver module is connected to the control circuit for selectively supplying currents to the first LED module, the second LED module, the third LED module, and the fourth LED module according to the operation mode. The driver module may include a current source, a PWM power circuit or other driver circuit types, for converting 110V or 220V AC to corresponding DC currents supplying to drive the white set of LED modules and the non-white set of LED modules. There may be multiple sub-modules in the driver module respectively for each LED module or for the white set and the for the non-white set of LED modules, respectively.
  • In the first mode, the first LED module and the second LED module are activated and the third LED module and the fourth LED module are deactivated for mixing a first output light using the first LED module and the second LED module. For example, no current is supplied to the non-white set of LED modules in the first mode. The first LED module and the second LED module are supplied with different currents to obtain different first output lights with different color temperatures.
  • In the second mode, the first LED and the second LED module are deactivated and the third LED module and the fourth LED module are activated for mixing a second output light using the third LED module and the fourth LED module. For example, the first LED module and the second LED module are turned off. The third LED module, the fourth LED module and maybe other LED module in the non-white set of LED modules are turned on to mix a desired color.
  • In some embodiments, the first output light is adjusted to a different color temperature by adjusting light strengths of the first LED module and the second LED module.
  • In some embodiments, the different color temperature of the first output light is obtained by changing a first current ratio of currents supplying to the first LED module and the second LED module.
  • In some embodiments, the different color temperature of the first output light is obtained by changing duty ratios of the first LED module and the second LED light module. In PWM power supplying, there is a duty ratio, the turned-on to turned-off ratio in a quickly repeated cycle, in PWM current supply. By adjusting the duty ratio, the overall output light strength is obtained. By adjusting the relative duty ratio between the first LED module and the second LED module, a different color temperature may be mixed.
  • In some embodiments, the first LED module and the second LED module emit lights simulating black body radiation spectrums corresponding to different sun light times. Black body radiation spectrum is used in Physics, for indicating light characteristics similar to sun light features.
  • In some embodiments, the non-white set of LED modules also includes a fifth LED module. The third LED module emits a red light, the fourth LED module emits a green light and the fifth LED module emits a blue light. The second output light is adjusted to have different colors by changing a output ratio of the third LED module, the fourth LED module and the fifth LED module.
  • In some embodiments, there is a wireless circuit connected to the control circuit for choosing the operation mode from the first mode and the second mode. The wireless circuit may implement Wi-Fi, Bluetooth, or other wireless protocols for receiving and/or transmitting signals to an external device like a mobile phone or a remote control.
  • In some embodiments, the wireless circuit also receives an external command for adjusting the first output light and the second output light. The external command may indicate a desired color temperature, a desired color, or a overall light strength for a luminance level.
  • In some embodiments, there is a manual switch manually operated by a user for indicating the control circuit to choose the operation mode from the first mode and the second mode. For example, the manual switch may be installed on a wall, on a back side of the light apparatus, on a remote control or on other places for users to operate for setting the light apparatus. The manual switch may be a button, a rotating switch, a touch panel, a jumper switch or other forms. The control circuit may receive the status of the manual switch and translate the status to choose a corresponding operation mode or other parameters.
  • For example, a light bulb as an example may be disposed with a manual switch near its bulb cap. Users may buy the same light bulb but switch the manual switch to set the output light of the light bulb to a desired color temperature or a desired color. This may decrease the storage in the store and users may even change the setting when they want to do so. Such mechanism may also be applied to down light, panel light, spot light or other light devices.
  • In some embodiments, the manual switch is concealed from direct user touch after installation of the light apparatus.
  • In some embodiments, the driver circuit has a shared current circuit for supplying a driving current to either the white set of LED modules or the non-white set of LED modules. As mentioned above, since the white set of LED module and the non-white set of LED modules may be set not turning on at the same time, there may be a shared current source supplying a common current source either supplying to the white set of LED modules or the non-white set of LED modules. In other words, in such design, there may be two sets of LED modules, but there may be only one set of driver circuit. Since the cost of LED modules are decreasing, the overall value of such design keeps increasing.
  • In some embodiments, the shared circuit switches the driving current to either the white set of LED modules or the non-white set of LED modules based on the operation mode.
  • In some embodiments, the driver module adjusts the first output light by changing duty ratios of the first LED module and the second LED module via PWM power supplying.
  • In some embodiments, the driver module adjusts the second output light by changing current ratios of the third LED module and the fourth LED module.
  • In some embodiments, the driver module activates both the white set of LED modules and the non-white set of LED modules in a third mode for generating a third output light.
  • In some embodiments, the driver module activates both the white set of LED modules and the non-white set of LED modules in a third mode for generating a third output light.
  • In some embodiments, a mixed color of the third output light is changed by adjusting the non-white set of LED modules.
  • In some embodiments, a mixed color temperature of the third output light is changed by adjusting the white set of LED modules.
  • In some embodiments, the white set of LED modules and the non-white set of LED modules are placed in an alternating mixed manner. Specifically, there may be multiple LED modules in the white set of LED modules and the non-white set of LED modules. To mix a better output light, the multiple LED modules may be disposed in an alternating mixed manner, e.g. different types of LED modules are placed next to each other while the same types of LED modules are distributed evenly on a light source plate.
  • In addition, since the first mode and the second mode determine that the white set of LED modules and the non-white set of LED modules are not turned on at the same time, one LED module of the white set of LED modules may be placed adjacent to one LED module of the non-white set of LED modules for achieving better heat dissipation, i.e. heat not accumulated at the same place.
  • In some embodiments, the control circuit switches to the first mode or the second mode when the white set of LED modules or the non-white set of LED modules are damaged.
  • The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings. The embodiments were chosen and described in order to best explain the principles of the techniques and their practical applications. Others skilled in the art are thereby enabled to best utilize the techniques and various embodiments with various modifications as are suited to the particular use contemplated.
  • Although the disclosure and examples have been fully described with reference to the accompanying drawings, it is to be noted that various changes and modifications will become apparent to those skilled in the art. Such changes and modifications are to be understood as being included within the scope of the disclosure and examples as defined by the claims.

Claims (20)

1. A light apparatus, comprising:
a white set of LED modules comprising a first LED module and a second LED module, wherein the first LED module emits a first light with a first color temperature and the second LED module emits a second light with a second color temperature, the first color temperature is different from the second color temperature;
a non-white set of LED modules comprising a third LED module and a fourth LED module, wherein the third LED module emits a third light with a third color and the fourth LED module emits a fourth light with a fourth color, the third color is different from the fourth color;
a control circuit for indicating an operation mode selected from at least a first mode and a second mode, the operation modes of the first mode and the second mode being chosen from a remote control; and
a driver module connected to the control circuit for selectively supplying currents to the first LED module, the second LED module, the third LED module, and the fourth LED module according to the operation mode, wherein the first LED module and the second LED module are activated and the third LED module and the fourth LED module are deactivated in the first mode for mixing a first output white light with a desired color temperature by adjusting a relative ratio between the first LED module and the second LED module,
and the first LED and the second LED module are deactivated and the third LED module and the fourth LED module are activated in the second mode for mixing a second output light of a desired color by mixing the third color and the fourth color using the third LED module and the fourth LED module.
2. The light apparatus of claim 1, wherein the first output light is adjusted to a different color temperature by adjusting light strengths of the first LED module and the second LED module.
3. The light apparatus of claim 2, wherein the different color temperature of the first output light is obtained by changing a first current ratio of currents supplying to the first LED module and the second LED module.
4. The light apparatus of claim 2, wherein the different color temperature of the first output light is obtained by changing duty ratios of the first LED module and the second LED light module.
5. The light apparatus of claim 1, wherein the first LED module and the second LED module emit lights simulating black body radiation spectrums corresponding to different sun light times.
6. The light apparatus of claim 1, wherein the non-white set of LED modules also comprises a fifth LED module, the third LED module emits a red light, the fourth LED module emits a green light and the fifth LED module emits a blue light, the second output light is adjusted to have different colors by changing a output ratio of the third LED module, the fourth LED module and the fifth LED module.
7. The light apparatus of claim 1, further comprising a wireless circuit connected to the control circuit for choosing the operation mode from the first mode and the second mode.
8. The light apparatus of claim 7, wherein the wireless circuit also receives an external command for adjusting the first output light and the second output light.
9. The light apparatus of claim 1, further comprising a manual switch manually operated by a user for indicating the control circuit to choose the operation mode from the first mode and the second mode.
10. The light apparatus of claim 9, wherein the manual switch is concealed from direct user touch after installation of the light apparatus.
11. The light apparatus of claim 1, wherein the driver circuit has a shared current circuit for supplying a driving current to either the white set of LED modules or the non-white set of LED modules.
12. The light apparatus of claim 11, wherein the shared circuit switches the driving current to either the white set of LED modules or the non-white set of LED modules based on the operation mode.
13. The light apparatus of claim 1, wherein the driver module adjusts the first output light by changing duty ratios of the first LED module and the second LED module via PWM power supplying.
14. The light apparatus of claim 1, wherein the driver module adjusts the second output light by changing current ratios of the third LED module and the fourth LED module.
15. The light apparatus of claim 1, wherein the driver module activates both the white set of LED modules and the non-white set of LED modules in a third mode for generating a third output light.
16. The light apparatus of claim 15, wherein the driver module activates both the white set of LED modules and the non-white set of LED modules in a third mode for generating a third output light.
17. The light apparatus of claim 16, wherein a mixed color of the third output light is changed by adjusting the non-white set of LED modules.
18. The light apparatus of claim 16, wherein a mixed color temperature of the third output light is changed by adjusting the white set of LED modules.
19. The light apparatus of claim 1, wherein the white set of LED modules and the non-white set of LED modules are placed in an alternating mixed manner.
20. The light apparatus of claim 1, wherein the control circuit switches to the first mode or the second mode when the white set of LED modules or the non-white set of LED modules are damaged.
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US20200236747A1 (en) 2020-07-23
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US20200236750A1 (en) 2020-07-23
EP3684144A1 (en) 2020-07-22
EP3684143A1 (en) 2020-07-22
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US11259378B2 (en) 2022-02-22
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US11246196B2 (en) 2022-02-08
EP3684143B1 (en) 2024-04-03

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